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4100 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
David Hildenbrand (Red Hat)
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cd8e95d80b |
mm: rename CONFIG_BALLOON_COMPACTION to CONFIG_BALLOON_MIGRATION
While compaction depends on migration, the other direction is not the case. So let's make it clearer that this is all about migration of balloon pages. Adjust all comments/docs in the core to talk about "migration" instead of "compaction". While at it add some "/* CONFIG_BALLOON_MIGRATION */". Link: https://lkml.kernel.org/r/20260119230133.3551867-23-david@kernel.org Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Eugenio Pérez <eperezma@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Jerrin Shaji George <jerrin.shaji-george@broadcom.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: SeongJae Park <sj@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Christoph Hellwig
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2d263debd7 |
xfs: allow setting errortags at mount time
Add an errortag mount option that enables an errortag with the default injection frequency. This allows injecting errors into the mount process instead of just on live file systems, and thus test mount error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Signed-off-by: Carlos Maiolino <cem@kernel.org> |
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Nayna Jain
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1d72a02d65 |
docs: trusted-encryped: add PKWM as a new trust source
Update Documentation/security/keys/trusted-encrypted.rst and Documentation/ admin-guide/kernel-parameters.txt with PowerVM Key Wrapping Module (PKWM) as a new trust source Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com> Tested-by: Nayna Jain <nayna@linux.ibm.com> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20260127145228.48320-7-ssrish@linux.ibm.com |
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Jakub Kicinski
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a010fe8d86 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc8). No adjacent changes, conflicts: drivers/net/ethernet/spacemit/k1_emac.c |
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Deepak Gupta
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c9b859c4d8 |
riscv: add kernel command line option to opt out of user CFI
Add a kernel command line option to disable part or all of user CFI. User backward CFI and forward CFI can be controlled independently. The kernel command line parameter "riscv_nousercfi" can take the following values: - "all" : Disable forward and backward cfi both - "bcfi" : Disable backward cfi - "fcfi" : Disable forward cfi Signed-off-by: Deepak Gupta <debug@rivosinc.com> Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6 Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com> Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-21-b55691eacf4f@rivosinc.com [pjw@kernel.org: fixed warnings from checkpatch; cleaned up patch description, doc, printk text] Signed-off-by: Paul Walmsley <pjw@kernel.org> |
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SeongJae Park
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ed581147a4 |
Docs/admin-guide/mm/damon/lru_sort: document intervals autotuning
Document a newly added DAMON_LRU_SORT module parameter for using monitoring intervals auto-tuning feature of DAMON. Link: https://lkml.kernel.org/r/20260113152717.70459-12-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Acked-by: wang lian <lianux.mm@gmail.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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cdfca22d15 |
Docs/admin-guide/mm/damon/lru_sort: document active_mem_bp parameter
Document a newly added DAMON_LRU_SORT parameter for doing auto-tuning aiming an active to inactive memory size ratio. Link: https://lkml.kernel.org/r/20260113152717.70459-10-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Acked-by: wang lian <lianux.mm@gmail.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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b36aefb866 |
Docs/admin-guide/mm/damon/lru_sort: document filter_young_pages
Document the new DAMON_LRU_SORT parameter, filter_young_pages. It can be used to use page level access re-check for the LRU sorting. Link: https://lkml.kernel.org/r/20260113152717.70459-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Acked-by: wang lian <lianux.mm@gmail.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Greg Thelen
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0bec75167d |
memcg-v1: remove folio_memcg_lock() doc reference
Commit |
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Linus Torvalds
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fcb70a56f4 |
vfs-6.19-rc8.fixes
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaXc4IwAKCRCRxhvAZXjc oo0jAQDOV580l4wHiY6eT1QGY2QYa7u8fYDOi6mqfgHa+EH5twD9ETnQ0xQHIKYP oruFJXLf3ihBBsum+pTpAO2XFVjM7Qs= =pM8o -----END PGP SIGNATURE----- Merge tag 'vfs-6.19-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs fixes from Christian Brauner: - Fix the the buggy conversion of fuse_reverse_inval_entry() introduced during the creation rework - Disallow nfs delegation requests for directories by setting simple_nosetlease() - Require an opt-in for getting readdir flag bits outside of S_DT_MASK set in d_type - Fix scheduling delayed writeback work by only scheduling when the dirty time expiry interval is non-zero and cancel the delayed work if the interval is set to zero - Use rounded_jiffies_interval for dirty time work - Check the return value of sb_set_blocksize() for romfs - Wait for batched folios to be stable in __iomap_get_folio() - Use private naming for fuse hash size - Fix the stale dentry cleanup to prevent a race that causes a UAF * tag 'vfs-6.19-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: vfs: document d_dispose_if_unused() fuse: shrink once after all buckets have been scanned fuse: clean up fuse_dentry_tree_work() fuse: add need_resched() before unlocking bucket fuse: make sure dentry is evicted if stale fuse: fix race when disposing stale dentries fuse: use private naming for fuse hash size writeback: use round_jiffies_relative for dirtytime_work iomap: wait for batched folios to be stable in __iomap_get_folio romfs: check sb_set_blocksize() return value docs: clarify that dirtytime_expire_seconds=0 disables writeback writeback: fix 100% CPU usage when dirtytime_expire_interval is 0 readdir: require opt-in for d_type flags vboxsf: don't allow delegations to be set on directories ceph: don't allow delegations to be set on directories gfs2: don't allow delegations to be set on directories 9p: don't allow delegations to be set on directories smb/client: properly disallow delegations on directories nfs: properly disallow delegation requests on directories fuse: fix conversion of fuse_reverse_inval_entry() to start_removing() |
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Ilpo Järvinen
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6343e06788
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Merge branch 'fixes' of into for-next | ||
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Greg Kroah-Hartman
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dbd91d4f55 |
Merge 6.19-rc7 into char-misc-next
We need the char/misc/iio fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Eric Dumazet
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37b0ea8fef |
net: expand NETDEV_RSS_KEY_LEN to 256 bytes
NETDEV_RSS_KEY_LEN has been set to 52 bytes in 2014, until now.
Jakub suggested we bump the size to 128 bytes or more.
Some drivers (like idpf) were already working around the core limit.
Since this change might cause some issues in admin scripts,
bump it directly to 256 in one go.
tjbp26:~# cat /proc/sys/net/core/netdev_rss_key | wc -c
768
tjbp26:~# ethtool -x eth1
RX flow hash indirection table for eth1 with 32 RX ring(s):
...
RSS hash key:
fe:16:5b:2f:93:85:c2:c9:c1:ef:bd:60:c6:e0:2b:99:4d:bf:b7:14:c8:1e:8d:cb:31:17:51:da:55:eb:91:d9:9e:f9:89:9b:44:a1:dc:08:72:3a:b3:d6:31:86:9a:fe:02:3a:0d:eb:a1:7c:f5:a3:51:3b:08:56:c9:3f:71:69:01:ba:70:38
RSS hash function:
toeplitz: on
xor: off
crc32: off
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/netdev/20260122075206.504ec591@kernel.org/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260122190349.2771064-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Linus Torvalds
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2a4d91142e |
platform-drivers-x86 for v6.19-3
Fixes and New HW Support
- acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
- amd/wbrf: Fix memory leak in wbrf_record()
- asus-armoury:
- Fix GA403U* matching
- Fix FA608UM TDP data
- Add many models
- asus-wmi: Move OOBE presence check outside deprecation ifdef
- docs:
- alienware-wmi: Typo fix
- amd_hsmp: Fix document link
- hp-bioscfg:
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
- Correct GUID to uppercase (lowercase letter prevented autoloading
the module)
- mellanox: Fix SN5640/SN5610 LED platform data
The following is an automated shortlog grouped by driver:
acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
amd:
- Fix memory leak in wbrf_record()
asus-armoury:
- Add power limits for Asus G513QY
- add support for FA401UV
- add support for FA617XT
- add support for G835L
- add support for GA403UV
- add support for GA403WM
- add support for GA403WW
- add support for GV302XV
- fix ppt data for FA608UM
- fix ppt data for GA403U* renaming to GA403UI
- keep the list ordered alphabetically
asus-wmi:
- fix sending OOBE at probe
docs: alienware-wmi:
- fix typo
docs:
- fix PPR for AMD EPYC broken link
hp-bioscfg:
- Fix automatic module loading
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
mellanox:
- Fix SN5640/SN5610 LED platform data
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Merge tag 'platform-drivers-x86-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Ilpo Järvinen:
- acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
- amd/wbrf: Fix memory leak in wbrf_record()
- asus-armoury:
- Fix GA403U* matching
- Fix FA608UM TDP data
- Add many models
- asus-wmi: Move OOBE presence check outside deprecation ifdef
- hp-bioscfg:
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
- Correct GUID to uppercase (lowercase letter prevented autoloading
the module)
- mellanox: Fix SN5640/SN5610 LED platform data
- docs:
- alienware-wmi: Typo fix
- amd_hsmp: Fix document link
* tag 'platform-drivers-x86-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (21 commits)
platform/x86: acer-wmi: Fix missing capability check
platform/x86: acer-wmi: Extend support for Acer Nitro AN515-58
platform/x86: asus-armoury: add support for GA403WW
platform/x86: asus-armoury: keep the list ordered alphabetically
platform/x86: asus-armoury: add support for G835L
platform/x86: asus-armoury: fix ppt data for FA608UM
platform/x86: hp-bioscfg: Fix automatic module loading
platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro
platform/x86: hp-bioscfg: Fix kobject warnings for empty attribute names
platform/x86: asus-wmi: fix sending OOBE at probe
platform/x86: asus-armoury: add support for FA617XT
platform/x86: asus-armoury: add support for FA401UV
platform/x86: asus-armoury: add support for GV302XV
platform/x86: asus-armoury: Add power limits for Asus G513QY
platform/x86/amd: Fix memory leak in wbrf_record()
platform/mellanox: Fix SN5640/SN5610 LED platform data
docs: fix PPR for AMD EPYC broken link
docs: alienware-wmi: fix typo
platform/x86: asus-armoury: add support for GA403UV
asus-armoury: fix ppt data for GA403U* renaming to GA403UI
...
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Jani Nikula
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a592a36e49 |
Documentation: use a source-read extension for the index link boilerplate
The root document usually has a special :ref:`genindex` link to the generated index. This is also the case for Documentation/index.rst. The other index.rst files deeper in the directory hierarchy usually don't. For SPHINXDIRS builds, the root document isn't Documentation/index.rst, but some other index.rst in the hierarchy. Currently they have a ".. only::" block to add the index link when doing SPHINXDIRS html builds. This is obviously very tedious and repetitive. The link is also added to all index.rst files in the hierarchy for SPHINXDIRS builds, not just the root document. Put the boilerplate in a sphinx-includes/subproject-index.rst file, and include it at the end of the root document for subproject builds in an ad-hoc source-read extension defined in conf.py. For now, keep having the boilerplate in translations, because this approach currently doesn't cover translated index link headers. Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Tested-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> [jc: did s/doctree/kern_doc_dir/ ] Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20260123143149.2024303-1-jani.nikula@intel.com> |
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Peter Zijlstra
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e1d7f54900 |
rseq: Move slice_ext_nsec to debugfs
Move changing the slice ext duration to debugfs, a sliglty less permanent interface. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260121143207.923520192@infradead.org |
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Thomas Gleixner
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0ac3b5c3dc |
rseq: Implement time slice extension enforcement timer
If a time slice extension is granted and the reschedule delayed, the kernel
has to ensure that user space cannot abuse the extension and exceed the
maximum granted time.
It was suggested to implement this via the existing hrtick() timer in the
scheduler, but that turned out to be problematic for several reasons:
1) It creates a dependency on CONFIG_SCHED_HRTICK, which can be disabled
independently of CONFIG_HIGHRES_TIMERS
2) HRTICK usage in the scheduler can be runtime disabled or is only used
for certain aspects of scheduling.
3) The function is calling into the scheduler code and that might have
unexpected consequences when this is invoked due to a time slice
enforcement expiry. Especially when the task managed to clear the
grant via sched_yield(0).
It would be possible to address #2 and #3 by storing state in the
scheduler, but that is extra complexity and fragility for no value.
Implement a dedicated per CPU hrtimer instead, which is solely used for the
purpose of time slice enforcement.
The timer is armed when an extension was granted right before actually
returning to user mode in rseq_exit_to_user_mode_restart().
It is disarmed, when the task relinquishes the CPU. This is expensive as
the timer is probably the first expiring timer on the CPU, which means it
has to reprogram the hardware. But that's less expensive than going through
a full hrtimer interrupt cycle for nothing.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251215155709.068329497@linutronix.de
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Thomas Gleixner
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f8380f9768 |
rseq: Provide static branch for time slice extensions
Guard the time slice extension functionality with a static key, which can be disabled on the kernel command line. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20251215155708.733429292@linutronix.de |
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Tejun Heo
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0ff6402de7 |
cgroup: Remove stale cpu.rt.max reference from documentation
cpu.rt.max was a proposed interface that never landed in mainline. Remove the reference from cgroup-v2 documentation. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Orestis Floros <orestisflo@gmail.com> |
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Li RongQing
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e700f5d156 |
watchdog: softlockup: panic when lockup duration exceeds N thresholds
The softlockup_panic sysctl is currently a binary option: panic immediately or never panic on soft lockups. Panicking on any soft lockup, regardless of duration, can be overly aggressive for brief stalls that may be caused by legitimate operations. Conversely, never panicking may allow severe system hangs to persist undetected. Extend softlockup_panic to accept an integer threshold, allowing the kernel to panic only when the normalized lockup duration exceeds N watchdog threshold periods. This provides finer-grained control to distinguish between transient delays and persistent system failures. The accepted values are: - 0: Don't panic (unchanged) - 1: Panic when duration >= 1 * threshold (20s default, original behavior) - N > 1: Panic when duration >= N * threshold (e.g., 2 = 40s, 3 = 60s.) The original behavior is preserved for values 0 and 1, maintaining full backward compatibility while allowing systems to tolerate brief lockups while still catching severe, persistent hangs. [lirongqing@baidu.com: v2] Link: https://lkml.kernel.org/r/20251218074300.4080-1-lirongqing@baidu.com Link: https://lkml.kernel.org/r/20251216074521.2796-1-lirongqing@baidu.com Signed-off-by: Li RongQing <lirongqing@baidu.com> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Lance Yang <lance.yang@linux.dev> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Song Liu <song@kernel.org> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Gregory Price
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9e80e66dda |
mm, hugetlb: implement movable_gigantic_pages sysctl
This reintroduces a concept removed by: commit
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Johannes Weiner
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64dd89ae01 |
mm/block/fs: remove laptop_mode
Laptop mode was introduced to save battery, by delaying and consolidating writes and thereby maximize the time rotating hard drives wouldn't have to spin. Luckily, rotating hard drives, with their high spin-up times and power draw, are a thing of the past for battery-powered devices. Reclaim has also since changed to not write single filesystem pages anymore, and regular filesystem writeback is lumpy by design. The juice doesn't appear worth the squeeze anymore. The footprint of the feature is small, but nevertheless it's a complicating factor in mm, block, filesystems. Developers don't think about it, and it likely hasn't been tested with new reclaim and writeback changes in years. Let's sunset it. Keep the sysctl with a deprecation warning around for a few more cycles, but remove all functionality behind it. [akpm@linux-foundation.org: fix Documentation/admin-guide/laptops/index.rst] Link: https://lkml.kernel.org/r/20251216185201.GH905277@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Deepanshu Kartikey <kartikey406@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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2584dd7496 |
Docs/admin-guide/mm/damon/usage: update for max_nr_snapshots
Update DAMON usage document for the newly added DAMON sysfs interface file, max_nr_snapshots. Link: https://lkml.kernel.org/r/20251216080128.42991-11-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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0b43f89e2d |
Docs/admin-guide/mm/damon/usage: update for nr_snapshots damos stat
Update DAMON usage document for the newly added damos stat, nr_snapshots. Link: https://lkml.kernel.org/r/20251216080128.42991-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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2502673aed |
zram: document writeback_batch_size
Add missing writeback_batch_size documentation. Link: https://lkml.kernel.org/r/20251201094754.4149975-4-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Brian Geffon <bgeffon@google.com> Cc: David Stevens <stevensd@google.com> Cc: Minchan Kim <minchan@google.com> Cc: Richard Chang <richardycc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Richard Chang
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4c1d61389e |
zram: introduce writeback_compressed device attribute
Introduce witeback_compressed device attribute to toggle compressed writeback (decompression on demand) feature. [senozhatsky@chromium.org: rewrote original patch, added documentation] Link: https://lkml.kernel.org/r/20251201094754.4149975-3-senozhatsky@chromium.org Signed-off-by: Richard Chang <richardycc@google.com> Co-developed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Brian Geffon <bgeffon@google.com> Cc: David Stevens <stevensd@google.com> Cc: Minchan Kim <minchan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Suren Baghdasaryan
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cb7d761bf5 |
Docs/mm/allocation-profiling: describe sysctrl limitations in debug mode
When CONFIG_MEM_ALLOC_PROFILING_DEBUG=y, /proc/sys/vm/mem_profiling is
read-only to avoid debug warnings in a scenario when an allocation is
made while profiling is disabled (allocation does not get an allocation
tag), then profiling gets enabled and allocation gets freed (warning due
to the allocation missing allocation tag).
Link: https://lkml.kernel.org/r/20260116184423.2708363-1-surenb@google.com
Fixes:
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Christian Brauner
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033724b1c6 |
dm-verity: add dm-verity keyring
Add a dedicated ".dm-verity" keyring for root hash signature verification, similar to the ".fs-verity" keyring used by fs-verity. By default the keyring is unused retaining the exact same old behavior. For systems that provision additional keys only intended for dm-verity images during boot, the dm_verity.keyring_unsealed=1 kernel parameter leaves the keyring open. We want to use this in systemd as a way add keys during boot that are only used for creating dm-verity devices for later mounting and nothing else. The discoverable disk image (DDI) spec at [1] heavily relies on dm-verity and we would like to expand this even more. This will allow us to do that in a fully backward compatible way. Once provisioning is complete, userspace restricts and activates it for dm-verity verification. If userspace fully seals the keyring then it gains the guarantee that no new keys can be added. Link: https://uapi-group.org/specifications/specs/discoverable_partitions_specification [1] Co-developed-by: Aleksa Sarai <cyphar@cyphar.com> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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Shenghao Yang
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2a11e1479e |
x86/acpi: Add acpi=spcr to use SPCR-provided default console
The SPCR provided console on x86 is only available as a boot console when
earlycon is provided on the kernel command line, and will not be present in
/proc/consoles.
While it's possible to retain the boot console with the keep_bootcon
parameter, that leaves the console using the less efficient 8250_early driver.
Users wanting to use the firmware suggested console (to avoid maintaining
unique serial console parameters for different server models in large fleets)
with the conventional driver have to parse the kernel log for the console
parameters and reinsert them.
[ 0.005091] ACPI: SPCR 0x000000007FFB5000 000059 (v04 ALASKA A M I 01072009 INTL 20250404)
[ 0.073387] ACPI: SPCR: console: uart,io,0x3f8,115200
In commit
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Martin Tůma
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eb4ee87074 |
Documentation: admin-guide: media: mgb4: Add GMSL1 & GMSL3-coax modules info
Add the mgb4 GMSL1 and GMSL3-coax modules info. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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Marc Herbert
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d9d25684e9 |
docs: make kptr_restrict and hash_pointers reference each other
vsprintf.c uses a mix of the `kernel.kptr_restrict` sysctl and the `hash_pointers` boot param to control pointer hashing. But that wasn't possible to tell without looking at the source code. They have a different focus and purpose. To avoid wasting the time of users trying to use one instead of the other, simply have them reference each other in the Documentation. Signed-off-by: Marc Herbert <marc.herbert@linux.intel.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20260107-doc-hash-ptr-v2-1-cb4c161218d7@linux.intel.com> |
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Nauman Sabir
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8913632998 |
Documentation: Fix typos and grammatical errors
Fix various typos and grammatical errors across documentation files: - Fix missing preposition 'in' in process/changes.rst - Correct 'result by' to 'result from' in admin-guide/README.rst - Fix 'before hand' to 'beforehand' in cgroup-v1/hugetlb.rst - Correct 'allows to limit' to 'allows limiting' in hugetlb.rst, cgroup-v2.rst, and kconfig-language.rst - Fix 'needs precisely know' to 'needs to precisely know' - Correct 'overcommited' to 'overcommitted' in hugetlb.rst - Fix subject-verb agreement: 'never causes' to 'never cause' - Fix 'there is enough' to 'there are enough' in hugetlb.rst - Fix 'metadatas' to 'metadata' in filesystems/erofs.rst - Fix 'hardwares' to 'hardware' in scsi/ChangeLog.sym53c8xx Signed-off-by: Nauman Sabir <officialnaumansabir@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Message-ID: <20260115230110.7734-1-officialnaumansabir@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Linus Torvalds
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13b2d15d99 |
32 hotfixes. 16 are cc:stable, 24 are for MM.
- four kerneldoc fixes from Bagas Sanjaya - four DAMON fixes from SeongJae - four mremap VMA-related fixes from Lorenzo - various singletons - please see the changelogs for details -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaWkP3gAKCRDdBJ7gKXxA jnmTAQCBiCyw7Pvvak5OM8Of0qQ8m/jQmNMBPRrd5M3tAAEOlwD9F7E6RjcmyItU k+sboDgNKTvgdRHTmRzj1t96aXJrSQQ= =OxTh -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2026-01-15-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: - kerneldoc fixes from Bagas Sanjaya - DAMON fixes from SeongJae - mremap VMA-related fixes from Lorenzo - various singletons - please see the changelogs for details * tag 'mm-hotfixes-stable-2026-01-15-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (30 commits) drivers/dax: add some missing kerneldoc comment fields for struct dev_dax mm: numa,memblock: include <asm/numa.h> for 'numa_nodes_parsed' mailmap: add entry for Daniel Thompson tools/testing/selftests: fix gup_longterm for unknown fs mm/page_alloc: prevent pcp corruption with SMP=n iommu/sva: include mmu_notifier.h header mm: kmsan: fix poisoning of high-order non-compound pages tools/testing/selftests: add forked (un)/faulted VMA merge tests mm/vma: enforce VMA fork limit on unfaulted,faulted mremap merge too tools/testing/selftests: add tests for !tgt, src mremap() merges mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge mm/zswap: fix error pointer free in zswap_cpu_comp_prepare() mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure mm/damon/sysfs-scheme: cleanup quotas subdirs on scheme dir setup failure mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure mm/damon/sysfs: cleanup intervals subdirs on attrs dir setup failure mm/damon/core: remove call_control in inactive contexts powerpc/watchdog: add support for hardlockup_sys_info sysctl mips: fix HIGHMEM initialization mm/hugetlb: ignore hugepage kernel args if hugepages are unsupported ... |
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Nitin Joshi
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a85503d541
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platform/x86: thinkpad_acpi: Add sysfs to display details of damaged device.
Add new sysfs interface to identify the impacted component with location of device. Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Signed-off-by: Nitin Joshi <nitjoshi@gmail.com> Link: https://patch.msgid.link/20260106174519.6402-2-nitjoshi@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Nitin Joshi
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28c43bddd0
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platform/x86: thinkpad_acpi: Add support to detect hardware damage detection capability.
Thinkpads are adding the ability to detect and report hardware damage status. Add new sysfs interface to identify whether hardware damage is detected or not. Initial support is available for the USB-C replaceable connector. Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Signed-off-by: Nitin Joshi <nitjoshi@gmail.com> Link: https://patch.msgid.link/20260106174519.6402-1-nitjoshi@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Marco Elver
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6ac166a0c8 |
docs: kernel-parameters: add kfence parameters
Add a brief summary for KFENCE's kernel command-line parameters in admin-guide/kernel-parameters. Link: https://lkml.kernel.org/r/20251222150018.1349672-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Stefano Stabellini
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763baca7bf |
xen: introduce xen_console_io option
Xen can support console_io hypercalls for any domains, not just dom0, depending on DEBUG and XSM policies. These hypercalls can be very useful for development and debugging. Introduce a kernel command line option xen_console_io to enable the usage of console_io hypercalls for any domain upon request. When xen_console_io is not specified, the current behavior is retained. Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> Message-ID: <alpine.DEB.2.22.394.2601131522540.992863@ubuntu-linux-20-04-desktop> |
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Eric Dumazet
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ffe4ccd359 |
net: add net.core.qdisc_max_burst
In blamed commit, I added a check against the temporary queue
built in __dev_xmit_skb(). Idea was to drop packets early,
before any spinlock was acquired.
if (unlikely(defer_count > READ_ONCE(q->limit))) {
kfree_skb_reason(skb, SKB_DROP_REASON_QDISC_DROP);
return NET_XMIT_DROP;
}
It turned out that HTB Qdisc has a zero q->limit.
HTB limits packets on a per-class basis.
Some of our tests became flaky.
Add a new sysctl : net.core.qdisc_max_burst to control
how many packets can be stored in the temporary lockless queue.
Also add a new QDISC_BURST_DROP drop reason to better diagnose
future issues.
Thanks Neal !
Fixes:
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Waiman Long
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2a3602030d |
cgroup/cpuset: Don't invalidate sibling partitions on cpuset.cpus conflict
Currently, when setting a cpuset's cpuset.cpus to a value that conflicts with the cpuset.cpus/cpuset.cpus.exclusive of a sibling partition, the sibling's partition state becomes invalid. This is overly harsh and is probably not necessary. The cpuset.cpus.exclusive control file, if set, will override the cpuset.cpus of the same cpuset when creating a cpuset partition. So cpuset.cpus has less priority than cpuset.cpus.exclusive in setting up a partition. However, it cannot override a conflicting cpuset.cpus file in a sibling cpuset and the partition creation process will fail. This is inconsistent. That will also make using cpuset.cpus.exclusive less valuable as a tool to set up cpuset partitions as the users have to check if such a cpuset.cpus conflict exists or not. Fix these problems by making sure that once a cpuset.cpus.exclusive is set without failure, it will always be allowed to form a valid partition as long as at least one CPU can be granted from its parent irrespective of the state of the siblings' cpuset.cpus values. Of course, setting cpuset.cpus.exclusive will fail if it conflicts with the cpuset.cpus.exclusive or the cpuset.cpus.exclusive.effective value of a sibling. Partition can still be created by setting only cpuset.cpus without setting cpuset.cpus.exclusive. However, any conflicting CPUs in sibling's cpuset.cpus.exclusive.effective and cpuset.cpus.exclusive values will be removed from its cpuset.cpus.exclusive.effective as long as there is still one or more CPUs left and can be granted from its parent. This CPU stripping is currently done in rm_siblings_excl_cpus(). The new code will now try its best to enable the creation of new partitions with only cpuset.cpus set without invalidating existing ones. However it is not guaranteed that all the CPUs requested in cpuset.cpus will be used in the new partition even when all these CPUs can be granted from the parent. This is similar to the fact that cpuset.cpus.effective may not be able to include all the CPUs requested in cpuset.cpus. In this case, the parent may not able to grant all the exclusive CPUs requested in cpuset.cpus to cpuset.cpus.exclusive.effective if some of them have already been granted to other partitions earlier. With the creation of multiple sibling partitions by setting only cpuset.cpus, this does have the side effect that their exact cpuset.cpus.exclusive.effective settings will depend on the order of partition creation if there are conflicts. Due to the exclusive nature of the CPUs in a partition, it is not easy to make it fair other than the old behavior of invalidating all the conflicting partitions. For example, # echo "0-2" > A1/cpuset.cpus # echo "root" > A1/cpuset.cpus.partition # cat A1/cpuset.cpus.partition root # cat A1/cpuset.cpus.exclusive.effective 0-2 # echo "2-4" > B1/cpuset.cpus # echo "root" > B1/cpuset.cpus.partition # cat B1/cpuset.cpus.partition root # cat B1/cpuset.cpus.exclusive.effective 3-4 # cat B1/cpuset.cpus.effective 3-4 For users who want to be sure that they can get most of the CPUs they want, cpuset.cpus.exclusive should be used instead if they can set it successfully without failure. Setting cpuset.cpus.exclusive will guarantee that sibling conflicts from then onward is no longer possible. To make this change, we have to separate out the is_cpu_exclusive() check in cpus_excl_conflict() into a cgroup v1 only cpuset1_cpus_excl_conflict() helper. The cpus_allowed_validate_change() helper is now no longer needed and can be removed. Some existing tests in test_cpuset_prs.sh are updated and new ones are added to reflect the new behavior. The cgroup-v2.rst doc file is also updated the clarify what exclusive CPUs will be used when a partition is created. Reported-by: Sun Shaojie <sunshaojie@kylinos.cn> Closes: https://lore.kernel.org/lkml/20251117015708.977585-1-sunshaojie@kylinos.cn/ Signed-off-by: Waiman Long <longman@redhat.com> Reviewed-by: Chen Ridong <chenridong@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Waiman Long
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6e6f13f6d5 |
cgroup/cpuset: Don't fail cpuset.cpus change in v2
Commit
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Petr Vorel
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829656c3e2 |
Documentation: bug-hunting.rst: Remove wrong 'file:' syntax
Link to another document does not require 'file:', therefore it was shown in generated html. Preformatted text requires just ``...``. Signed-off-by: Petr Vorel <pvorel@suse.cz> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20260111223643.174812-1-pvorel@suse.cz> |
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Askar Safin
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e6ce36ccc8
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init: remove /proc/sys/kernel/real-root-dev
It is not used anymore. Signed-off-by: Askar Safin <safinaskar@gmail.com> Link: https://patch.msgid.link/20251119222407.3333257-4-safinaskar@gmail.com Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Askar Safin
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c350a65b56
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initrd: remove deprecated code path (linuxrc)
Remove linuxrc initrd code path, which was deprecated in 2020. Initramfs and (non-initial) RAM disks (i. e. brd) still work. Both built-in and bootloader-supplied initramfs still work. Non-linuxrc initrd code path (i. e. using /dev/ram as final root filesystem) still works, but I put deprecation message into it. Also I deprecate command line parameters "noinitrd" and "ramdisk_start=". Signed-off-by: Askar Safin <safinaskar@gmail.com> Link: https://patch.msgid.link/20251119222407.3333257-3-safinaskar@gmail.com Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Laveesh Bansal
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30ef9a20f1
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docs: clarify that dirtytime_expire_seconds=0 disables writeback
Document that setting vm.dirtytime_expire_seconds to zero disables periodic dirtytime writeback, matching the behavior of the related dirty_writeback_centisecs sysctl which already documents this. Signed-off-by: Laveesh Bansal <laveeshb@laveeshbansal.com> Link: https://patch.msgid.link/20260106145059.543282-3-laveeshb@laveeshbansal.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Mostafa Saleh
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466ae6978a |
iommu: Add page_ext for IOMMU_DEBUG_PAGEALLOC
Add a new config IOMMU_DEBUG_PAGEALLOC, which registers new data to page_ext. This config will be used by the IOMMU API to track pages mapped in the IOMMU to catch drivers trying to free kernel memory that they still map in their domains, causing all types of memory corruption. This behaviour is disabled by default and can be enabled using kernel cmdline iommu.debug_pagealloc. Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Pranjal Shrivastava <praan@google.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mostafa Saleh <smostafa@google.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> |
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Tony Luck
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842e7f97d7 |
x86/resctrl: Add energy/perf choices to rdt boot option
Legacy resctrl features are enumerated by X86_FEATURE_* flags. These may be overridden by quirks to disable features in the case of errata. Users can use kernel command line options to either disable a feature, or to force enable a feature that was disabled by a quirk. A different approach is needed for hardware features that do not have an X86_FEATURE_* flag. Update parsing of the "rdt=" boot parameter to call the telemetry driver directly to handle new "perf" and "energy" options that controls activation of telemetry monitoring of the named type. By itself a "perf" or "energy" option controls the forced enabling or disabling (with ! prefix) of all event groups of the named type. A ":guid" suffix allows for fine grained control per event group. [ bp: s/intel_aet_option/intel_handle_aet_option/g ] Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com |
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Dapeng Mi
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860bcb1021 |
KVM: x86/pmu: Expose enable_mediated_pmu parameter to user space
Expose enable_mediated_pmu parameter to user space, i.e. allow userspace to enable/disable mediated vPMU support. Document the mediated versus perf-based behavior as part of the kernel-parameters.txt entry, and opportunistically add an entry for the core enable_pmu param as well. Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Signed-off-by: Mingwei Zhang <mizhang@google.com> Tested-by: Xudong Hao <xudong.hao@intel.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Tested-by: Manali Shukla <manali.shukla@amd.com> Link: https://patch.msgid.link/20251206001720.468579-34-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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Yu Liao
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be5c6ec660 |
Documentation/kernel-parameters: Add tsa under mitigations=off
On X86 AMD systems, mitigations=off also disables the Transient Scheduler Attacks (TSA) mitigation. Add it to the list. Signed-off-by: Yu Liao <liaoyu.ly@bytedance.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20251225121438.38427-1-liaoyu.ly@bytedance.com> |
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Max Nikulin
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3a8501b3a4 |
docs: admin: devices: remove /dev/cdwriter
Remove /dev/cdwriter from the local symlinks table and from the related note. Creation of the symlink was removed from udev in commit [1] that became a part of release 115 in 2007 [2]. The altered text was added in 1995 [3]. [1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=b1a2b83f2d 2007-08-11 14:06:03 +0200 Kay Sievers. rules: update Fedora rules [2] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?h=7e599863919 2007-08-24 01:29:54 +0200 Kay Sievers. release 115 [3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.5.45&id=6e995ea941a 1995-11-21 Linus Torvalds. Import 1.3.43 Signed-off-by: Max Nikulin <manikulin@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <f5c3f6e9-cd92-47e3-89c3-06dbcfc98c17@gmail.com> |
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Akiyoshi Kurita
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efbc288d15
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docs: alienware-wmi: fix typo
Fix a typo in the manual fan control description ("aproximate" ->
"approximate").
Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Kurt Borja <kuurtb@gmail.com>
Link: https://patch.msgid.link/20251230213431.656106-1-weibu@redadmin.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Akiyoshi Kurita
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b735960c02 |
dm-raid: fix typo in documentation
Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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Paul E. McKenney
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a73fc3dcc6 |
rcu: Clean up after the SRCU-fastification of RCU Tasks Trace
Now that RCU Tasks Trace has been re-implemented in terms of SRCU-fast, the ->trc_ipi_to_cpu, ->trc_blkd_cpu, ->trc_blkd_node, ->trc_holdout_list, and ->trc_reader_special task_struct fields are no longer used. In addition, the rcu_tasks_trace_qs(), rcu_tasks_trace_qs_blkd(), exit_tasks_rcu_finish_trace(), and rcu_spawn_tasks_trace_kthread(), show_rcu_tasks_trace_gp_kthread(), rcu_tasks_trace_get_gp_data(), rcu_tasks_trace_torture_stats_print(), and get_rcu_tasks_trace_gp_kthread() functions and all the other functions that they invoke are no longer used. Also, the TRC_NEED_QS and TRC_NEED_QS_CHECKED CPP macros are no longer used. Neither are the rcu_tasks_trace_lazy_ms and rcu_task_ipi_delay rcupdate module parameters and the TASKS_TRACE_RCU_READ_MB Kconfig option. This commit therefore removes all of them. [ paulmck: Apply Alexei Starovoitov feedback. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: bpf@vger.kernel.org Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> |
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Jaime Saguillo Revilla
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0c90fd379b |
docs: admin-guide: thunderbolt: Replace ifconfig with ip
ifconfig is a legacy tool and no longer installed by default on many modern distributions. Update the documentation to reference ip from iproute2 instead. No functional change. Signed-off-by: Jaime Saguillo Revilla <jaime.saguillo@gmail.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> |
||
|
Jiri Slaby (SUSE)
|
c0fef45dba |
char/mwave: drop it
When I tried to clean up the driver a bit, Arnd noted: > According to thinkwiki.de, the 3780i modem was only used in a > couple of Thinkpad models that are now over 25 years old, using > Pentium II processors, and they all have a physical RS232 port > that can be used to connect an external modem instead. > > Maybe we can just retire this driver? So instead of the clean up, drop the driver altogether. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Suggested-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/all/b8834e5d-fdde-4b1a-8757-288dddc507a9@app.fastmail.com/ Link: https://patch.msgid.link/20251124103952.995229-1-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Max Nikulin
|
5188f6bd40 |
docs: admin: devices: /dev/sr<N> for SCSI CD-ROM
Don't claim that /dev/sr<N> device names for SCSI CD-ROM drives are deprecated and don't recommend /dev/scd<N> alternate names for them. /dev/scd<N> device names for SCSI CD-ROM drives are not in use for more than a decade, see commit [1] that was a part of udev release 174. Earlier, related rules were volatile, sometimes /dev/scd<N> were syminks to /dev/sr<N>, sometimes vice versa. Recognizing of root=/dev/scd<N> kernel command line argument was removed in kernel 2.5.45 [2]. In the docs /dev/scd<N> became recommended names in 2.6.9 [3]. Mention of these names appeared much earlier in 1.3.22 [4]. [1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=d132be4d58 2011-08-12 14:05:19 +0200 Kay Sievers. rules: remove legacy rules for cdrom and usb printer [2] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/init?h=v2.5.45&id=51924607bd 2002-10-29 00:47:58 -0800 Alexander Viro. [PATCH] removal of root_dev_names[] [3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.6.9-rc4&id=a74e11ffeda 2004-03-16 15:09:38 -0800 Andrew Morton: [PATCH] devices.txt: typos and removal of dead devices [4] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/tree/Documentation/devices.txt?h=v2.6.9-rc4&id=8f0ec1f9369 1995-09-01 Linus Torvalds: Import 1.3.22 Signed-off-by: Max Nikulin <manikulin@gmail.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <f0a3e0aa-e4f9-41d3-8931-57837831d136@gmail.com> |
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|
Linus Torvalds
|
d8ba32c5a4 |
block-6.19-20251218
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||
|
Yongpeng Yang
|
67d85b062d |
Documentation: admin-guide: blockdev: replace zone_capacity with zone_capacity_mb when creating devices
The "zone_capacity=%umb" option is no longer used. The effective option is now "zone_capacity_mb=%u", so update the documentation accordingly. Signed-off-by: Yongpeng Yang <yangyongpeng@xiaomi.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Askar Safin
|
7f3b336685
|
init: remove deprecated "load_ramdisk" and "prompt_ramdisk" command line parameters
...which do nothing. They were deprecated (in documentation) in |
||
|
Niklas Cassel
|
ad50d922f4 |
ata: libata: Add libata.force parameter max_sec
Add a new libata.force parameter called max_sec. The parameter can take an arbitrary value using the format: libata.force=max_sec=<number of 512B sectors> e.g. libata.force=max_sec=8191 or libata.force=max_sec=2048 This will allow the user to set an arbitrary maximum command size (dev->max_sectors) using libata.force. We cannot remove the existing libata.force parameters "max_sec_128" and "max_sec_1024", as these are a part of the exising user facing API. Signed-off-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Damien Le Moal <dlemoal@kernel.org> |
||
|
Linus Torvalds
|
d358e52546 |
small dm code refactoring
fix deadlock when reloading a multipath table
don't warn if IMA_DISABLE_HTABLE is not enabled
test for REQ_ATOMIC in dm_accept_partial_bio()
ignore discard return value
MAINTAINERS: add Benjamin Marzinski as a device mapper maintainer
dm-bufio: align write boundary on physical block size
dm-crypt: use the MD5 library directly
dm-crypt: use folio_nr_pages() instead of shift operation
dm-crypt: enable DM_TARGET_ATOMIC_WRITES
dm-verity: remove log message with shash driver name
dm-verity: use the SHA-256 library directly
dm-verity: use 2-way interleaved SHA-256 hashing when supported
dm-verity: expose corrected block count via status
dm-verity: disable recursive forward error correction
dm-verity: remove useless mempool
dm-mpath: enable DM_TARGET_ATOMIC_WRITES
dm-mpath: simplify the setup_scsi_dh code
dm-ebs: mark full buffer dirty even on partial write
dm-vdo: fix kerneldoc warnings
dm-snapshot: fix 'scheduling while atomic' on real-time kernels
dm-raid: fix possible NULL dereference with undefined raid type
dm raid: add documentation for takeover/reshape raid1 -> raid5 table line examples
dm-log-writes: add missing set_freezable() for freezable kthread
dm-pcache: fixes in indexing code
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Merge tag 'for-6.19/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mikulas Patocka:
- convert crypto_shash users to direct crypto library use with simpler
and faster code and reduced stack usage (Eric Biggers):
- the dm-verity SHA-256 conversion also teaches it to do two-way
interleaved hashing for added performance
- dm-crypt MD5 conversion (used for Loop-AES compatibility)
- added document for for takeover/reshape raid1 -> raid5 examples (Heinz Mauelshagen)
- fix dm-vdo kerneldoc warnings (Matthew Sakai)
- various random fixes and cleanups
* tag 'for-6.19/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (29 commits)
dm pcache: fix segment info indexing
dm pcache: fix cache info indexing
dm-pcache: advance slot index before writing slot
dm raid: add documentation for takeover/reshape raid1 -> raid5 table line examples
dm log-writes: Add missing set_freezable() for freezable kthread
dm-raid: fix possible NULL dereference with undefined raid type
dm-snapshot: fix 'scheduling while atomic' on real-time kernels
dm: ignore discard return value
MAINTAINERS: add Benjamin Marzinski as a device mapper maintainer
dm-mpath: Simplify the setup_scsi_dh code
dm vdo: fix kerneldoc warnings
dm-bufio: align write boundary on physical block size
dm-crypt: enable DM_TARGET_ATOMIC_WRITES
dm: test for REQ_ATOMIC in dm_accept_partial_bio()
dm-verity: remove useless mempool
dm-verity: disable recursive forward error correction
dm-ebs: Mark full buffer dirty even on partial write
dm mpath: enable DM_TARGET_ATOMIC_WRITES
dm verity fec: Expose corrected block count via status
dm: Don't warn if IMA_DISABLE_HTABLE is not enabled
...
|
||
|
Heinz Mauelshagen
|
7799eaecfe |
dm raid: add documentation for takeover/reshape raid1 -> raid5 table line examples
Also enhance possible takeover/reshape information and do some reformatting. Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
Linus Torvalds
|
9d588a1140 |
platform-drivers-x86 for v6.19-1
Highlights:
- acer-wmi: Add PH16-72, PHN16-72, and PT14-51 fan control support
- acpi: platform_profile: Add max-power profile option (power draw limited
by the cooling hardware, may exceed battery power
draw limit when on AC power)
- amd/hsmp: Allow >1 data-fabric per socket
- asus-armoury: Add WMI attributes driver to expose miscellaneous
WMI functions through fw_attributes (deprecates
the custom BIOS features interface through asus-wmi)
- asus-wmi: Use brightness_set_blocking() for kbd led
- ayaneo-ec: Add Ayaneo Embedded Controller driver
- fs/nls:
- Fix utf16 -> utf8 string conversion in output size restricted cases
- Improve error code consistency for utf8 -> utf32 conversions
- ideapad-laptop: Fast (Rapid Charge) charge type support
- intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
- intel/pmc:
- Arrow Lake telemetry GUID improvements
- Add support for Wildcat Lake PMC information
- intel_pmc_ipc: Fix ACPI buffer memleak
- intel/punit_ipc: Fix memory corruption
- intel/vsec: Wildcat Lake PMT telemetry support
- lenovo-wmi-gamezone: Map "Extreme" performance mode to max-power
- lg-laptop: Add support for the HDAP opregion field
- serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing projects
- thinkpad-t14s-ec: Improve suspend/resume support (lid LEDs, keyboard
backlight)
- uniwill: Add Uniwill laptop driver
- wmi: Move under drivers/platform/wmi as non-x86 WMI support is around
the corner and other WMI features will require adding more C
files as well
- tools/power/x86/intel-speed-select: v1.24
- Check feature status to check if the feature enablement was successful
- Reset SST-TF bucket structure to display valid bucket info
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
acer-wmi:
- Add fan control support
- Add support for PHN16-72
- Enable fan control for PH16-72 and PT14-51
- Fix setting of fan behavior
acpi:
- platform_profile - Add max-power profile option
Add Uniwill laptop driver:
- Add Uniwill laptop driver
alienware-wmi-wmax:
- Simplify FW profile to pprof matching
amd: hfi:
- Remove redundant assignment to .owner
- Remove unused cpumask from cpuinfo struct
amd/hsmp:
- Replace amd_num_nodes() with topology_max_packages()
amd/pmf:
- Add BIOS_INPUTS_MAX macro to replace hardcoded array size
- Refactor repetitive BIOS output handling
- Rename IPU metrics fields to NPU for consistency
- Replace magic table id with METRICS_TABLE_ID
- Use devm_mutex_init() for mutex initialization
- Use explicit SET_CMD/GET_CMD flags in amd_pmf_send_cmd()
arm64: thinkpad-t14s-ec:
- add suspend handler for keyboard backlight
- add system PM hooks
asus-armoury:
- add apu-mem control support
- add panel_hd_mode attribute
- add ppt_* and nv_* tuning knobs
- add screen auto-brightness toggle
- add support for FA507UV
- add support for GA503QR
- Fix error code in mini_led_mode_current_value_store()
- fix mini-led mode show
- fix only DC tunables being available
- move existing tunings to asus-armoury module
asus-wmi:
- deprecate bios features
- export symbols used for read/write WMI
- rename ASUS_WMI_DEVID_PPT_FPPT
- use brightness_set_blocking() for kbd led
ayaneo-ec:
- Add Ayaneo Embedded Controller platform driver
- Add charge control support
- Add controller power and modules attributes
- Add hwmon support
- Add suspend hook
- Move Ayaneo devices from oxpec to ayaneo-ec
Documentation: laptops:
- Add documentation for uniwill laptops
fs/nls:
- Fix inconsistency between utf8_to_utf32() and utf32_to_utf8()
- Fix utf16 to utf8 conversion
hp-wmi:
- Order DMI board name arrays
ideapad-laptop: Add charge_types:
- Fast (Rapid Charge)
ideapad-laptop:
- Protect GBMD/SBMC calls with mutex
- Support multiple power_supply_ext definitions
- Use str_on_off() helper
intel/hid:
- Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
intel/pmc:
- Add DMU GUID to Arrow Lake U/H
- Add support for multiple DMU GUIDs
- Enable SSRAM support for Wildcat Lake
intel_pmc_ipc:
- fix ACPI buffer memory leak
intel/pmc:
- Relocate lpm_req_guid to pmc_reg_map
- Remove redundant has_die_c6 variable
- Rename PMC index variable to pmc_idx
- Update Arrow Lake telemetry GUID
intel/vsec:
- Add support for Wildcat Lake
lenovo-wmi-gamezone Use max-power rather than balanced-performance:
- lenovo-wmi-gamezone Use max-power rather than balanced-performance
lg-laptop:
- Add support for the HDAP opregion field
serial-multi-instantiate:
- Add IRQ_RESOURCE_OPT for IRQ missing projects
surface: acpi-notify:
- add WQ_PERCPU to alloc_workqueue users
surface: aggregator:
- Omit a variable reassignment in ssam_serial_hub_probe()
surface:
- replace use of system_wq with system_percpu_wq
tools/power/x86/intel-speed-select:
- Check feature status
- Reset isst_turbo_freq_info for invalid buckets
- v1.24 release
uniwill:
- Add TUXEDO devices
- Handle more WMI events required for TUXEDO devices
wmi-gamezone:
- Add Legion Go 2 Quirks
wmi:
- Move WMI core code into a separate directory
- Remove extern keyword from prototypes
- Use correct type when populating ACPI objects
x86-android-tablets:
- Omit a variable reassignment in lenovo_yoga_tab2_830_1050_init_codec()
x86:
- replace use of system_wq with system_percpu_wq
Merges:
- Merge branch 'fixes' of into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
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Merge tag 'platform-drivers-x86-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- acer-wmi: Add PH16-72, PHN16-72, and PT14-51 fan control support
- acpi: platform_profile: Add max-power profile option (power draw
limited by the cooling hardware, may exceed battery power draw limit
when on AC power)
- amd/hsmp: Allow more than one data-fabric per socket
- asus-armoury: Add WMI attributes driver to expose miscellaneous WMI
functions through fw_attributes (deprecates the custom BIOS features
interface through asus-wmi)
- asus-wmi: Use brightness_set_blocking() for kbd led
- ayaneo-ec: Add Ayaneo Embedded Controller driver
- fs/nls:
- Fix utf16 to utf8 string conversion when output size restricted
- Improve error code consistency for utf8 to utf32 conversions
- ideapad-laptop: Fast (Rapid Charge) charge type support
- intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
- intel/pmc:
- Arrow Lake telemetry GUID improvements
- Add support for Wildcat Lake PMC information
- intel_pmc_ipc: Fix ACPI buffer memleak
- intel/punit_ipc: Fix memory corruption
- intel/vsec: Wildcat Lake PMT telemetry support
- lenovo-wmi-gamezone: Map "Extreme" performance mode to max-power
- lg-laptop: Add support for the HDAP opregion field
- serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing
projects
- thinkpad-t14s-ec: Improve suspend/resume support (lid LEDs, keyboard
backlight)
- uniwill: Add Uniwill laptop driver
- wmi: Move under drivers/platform/wmi as non-x86 WMI support is around
the corner and other WMI features will require adding more C files as
well
- tools/power/x86/intel-speed-select: v1.24
- Check feature status to check if the feature enablement was
successful
- Reset SST-TF bucket structure to display valid bucket info
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (73 commits)
tools/power/x86/intel-speed-select: v1.24 release
tools/power/x86/intel-speed-select: Reset isst_turbo_freq_info for invalid buckets
tools/power/x86/intel-speed-select: Check feature status
platform/x86: asus-wmi: use brightness_set_blocking() for kbd led
fs/nls: Fix inconsistency between utf8_to_utf32() and utf32_to_utf8()
platform/x86: asus-armoury: add support for GA503QR
platform/x86: intel_pmc_ipc: fix ACPI buffer memory leak
platform/x86: hp-wmi: Order DMI board name arrays
platform/x86/intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
platform: surface: replace use of system_wq with system_percpu_wq
platform: x86: replace use of system_wq with system_percpu_wq
platform/surface: acpi-notify: add WQ_PERCPU to alloc_workqueue users
platform/x86: wmi-gamezone: Add Legion Go 2 Quirks
platform/x86: lenovo-wmi-gamezone Use max-power rather than balanced-performance
acpi: platform_profile - Add max-power profile option
platform/x86/amd/pmf: Use devm_mutex_init() for mutex initialization
platform/x86/amd/pmf: Add BIOS_INPUTS_MAX macro to replace hardcoded array size
platform/x86: serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing projects
platform/x86/amd/pmf: Refactor repetitive BIOS output handling
platform/x86/uniwill: Add TUXEDO devices
...
|
||
|
Linus Torvalds
|
67a454e6b1 |
memblock: introduce check_pages boot parameter
... to decouple simple checks for page state on allocation and free from
CONFIG_DEBUG_VM.
check_pages parameter allows enabling page checking without building kernel
with CONFIG_DEBUG_VM or forcing init_on_{alloc, free} or other heavier
mechanisms.
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Merge tag 'memblock-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock update from Mike Rapoport:
"Introduce a 'check_pages' boot parameter to decouple simple checks for
page state on allocation and free from CONFIG_DEBUG_VM.
This allows enabling page checking without building kernel with
CONFIG_DEBUG_VM or forcing init_on_{alloc, free} or other heavier
mechanisms"
* tag 'memblock-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
mm/mm_init: Introduce a boot parameter for check_pages
|
||
|
Linus Torvalds
|
f5e9d31e79 |
USB/Thunderbolt changes for 6.19-rc1
Here is the big set of USB and Thunderbolt driver updates for 6.19-rc1. Nothing major here, just lots of tiny updates for most of the common USB drivers. Included in here are: - more xhci driver updates and fixes - Thunderbolt driver cleanups - usb serial driver updates - typec driver updates - USB tracepoint additions - dwc3 driver updates, including support for Apple hardware - lots of other smaller driver updates and cleanups All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaTTLNQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yn29wCcD23xCSWuRIKHfSWlefCwptHKT0AAoM0NJdeO C4/4pui5ifTu1g5Vud1r =Sm/3 -----END PGP SIGNATURE----- Merge tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt driver updates for 6.19-rc1. Nothing major here, just lots of tiny updates for most of the common USB drivers. Included in here are: - more xhci driver updates and fixes - Thunderbolt driver cleanups - usb serial driver updates - typec driver updates - USB tracepoint additions - dwc3 driver updates, including support for Apple hardware - lots of other smaller driver updates and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits) usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt USB: serial: option: move Telit 0x10c7 composition in the right place USB: serial: option: add Telit Cinterion FE910C04 new compositions usb: typec: ucsi: fix use-after-free caused by uec->work usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe() usb: dwc3: core: Remove redundant comment in core init usb: phy: Initialize struct usb_phy list_head USB: serial: option: add Foxconn T99W760 usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive. usb: typec: hd3ss3220: Enable VBUS based on ID pin state dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users USB: add WQ_PERCPU to alloc_workqueue users dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform drivers/usb/storage: use min() instead of min_t() usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE usb: ohci-da8xx: remove unused platform data usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper usb: uas: reduce time under spinlock usb: dwc3: eic7700: Add EIC7700 USB driver ... |
||
|
Linus Torvalds
|
509d3f4584 |
Significant patch series in this pull request:
- The 6 patch series "panic: sys_info: Refactor and fix a potential
issue" from Andy Shevchenko fixes a build issue and does some cleanup in
ib/sys_info.c.
- The 9 patch series "Implement mul_u64_u64_div_u64_roundup()" from
David Laight enhances the 64-bit math code on behalf of a PWM driver and
beefs up the test module for these library functions.
- The 2 patch series "scripts/gdb/symbols: make BPF debug info available
to GDB" from Ilya Leoshkevich makes BPF symbol names, sizes, and line
numbers available to the GDB debugger.
- The 4 patch series "Enable hung_task and lockup cases to dump system
info on demand" from Feng Tang adds a sysctl which can be used to cause
additional info dumping when the hung-task and lockup detectors fire.
- The 6 patch series "lib/base64: add generic encoder/decoder, migrate
users" from Kuan-Wei Chiu adds a general base64 encoder/decoder to lib/
and migrates several users away from their private implementations.
- The 2 patch series "rbree: inline rb_first() and rb_last()" from Eric
Dumazet makes TCP a little faster.
- The 9 patch series "liveupdate: Rework KHO for in-kernel users" from
Pasha Tatashin reworks the KEXEC Handover interfaces in preparation for
Live Update Orchestrator (LUO), and possibly for other future clients.
- The 13 patch series "kho: simplify state machine and enable dynamic
updates" from Pasha Tatashin increases the flexibility of KEXEC
Handover. Also preparation for LUO.
- The 18 patch series "Live Update Orchestrator" from Pasha Tatashin is
a major new feature targeted at cloud environments. Quoting the [0/N]:
This series introduces the Live Update Orchestrator, a kernel subsystem
designed to facilitate live kernel updates using a kexec-based reboot.
This capability is critical for cloud environments, allowing hypervisors
to be updated with minimal downtime for running virtual machines. LUO
achieves this by preserving the state of selected resources, such as
memory, devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving memfd file
descriptors, which allows critical in-memory data, such as guest RAM or
any other large memory region, to be maintained in RAM across the kexec
reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- The 3 patch series "kexec: reorganize kexec and kdump sysfs" from
Sourabh Jain moves the kexec and kdump sysfs entries from /sys/kernel/
to /sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day.
- The 2 patch series "kho: fixes for vmalloc restoration" from Mike
Rapoport fixes a BUG which was being hit during KHO restoration of
vmalloc() regions.
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Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
fixes a build issue and does some cleanup in ib/sys_info.c
- "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
enhances the 64-bit math code on behalf of a PWM driver and beefs up
the test module for these library functions
- "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
makes BPF symbol names, sizes, and line numbers available to the GDB
debugger
- "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
adds a sysctl which can be used to cause additional info dumping when
the hung-task and lockup detectors fire
- "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
adds a general base64 encoder/decoder to lib/ and migrates several
users away from their private implementations
- "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
makes TCP a little faster
- "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
reworks the KEXEC Handover interfaces in preparation for Live Update
Orchestrator (LUO), and possibly for other future clients
- "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
increases the flexibility of KEXEC Handover. Also preparation for LUO
- "Live Update Orchestrator" (Pasha Tatashin)
is a major new feature targeted at cloud environments. Quoting the
cover letter:
This series introduces the Live Update Orchestrator, a kernel
subsystem designed to facilitate live kernel updates using a
kexec-based reboot. This capability is critical for cloud
environments, allowing hypervisors to be updated with minimal
downtime for running virtual machines. LUO achieves this by
preserving the state of selected resources, such as memory,
devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving
memfd file descriptors, which allows critical in-memory data, such
as guest RAM or any other large memory region, to be maintained in
RAM across the kexec reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
moves the kexec and kdump sysfs entries from /sys/kernel/ to
/sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day
- "kho: fixes for vmalloc restoration" (Mike Rapoport)
fixes a BUG which was being hit during KHO restoration of vmalloc()
regions
* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
calibrate: update header inclusion
Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
vmcoreinfo: track and log recoverable hardware errors
kho: fix restoring of contiguous ranges of order-0 pages
kho: kho_restore_vmalloc: fix initialization of pages array
MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
init: replace simple_strtoul with kstrtoul to improve lpj_setup
KHO: fix boot failure due to kmemleak access to non-PRESENT pages
Documentation/ABI: new kexec and kdump sysfs interface
Documentation/ABI: mark old kexec sysfs deprecated
kexec: move sysfs entries to /sys/kernel/kexec
test_kho: always print restore status
kho: free chunks using free_page() instead of kfree()
selftests/liveupdate: add kexec test for multiple and empty sessions
selftests/liveupdate: add simple kexec-based selftest for LUO
selftests/liveupdate: add userspace API selftests
docs: add documentation for memfd preservation via LUO
mm: memfd_luo: allow preserving memfd
liveupdate: luo_file: add private argument to store runtime state
mm: shmem: export some functions to internal.h
...
|
||
|
Linus Torvalds
|
416f99c3b1 |
Driver core changes for 6.19-rc1
- Arch Topology:
- Move parse_acpi_topology() from arm64 to common code for reuse in RISC-V
- CPU:
- Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
- Print a newline (or 0x0A) instead of '(null)' reading
/sys/devices/system/cpu/nohz_full when nohz_full= is not set
- debugfs
- Remove (broken) 'no-mount' mode
- Remove redundant access mode checks in debugfs_get_tree() and
debugfs_create_*() functions
- Devres:
- Remove unused devm_free_percpu() helper
- Move devm_alloc_percpu() from device.h to devres.h
- Firmware Loader:
- Replace simple_strtol() with kstrtoint()
- Do not call cancel_store() when no upload is in progress
- kernfs:
- Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
- Fix a missing unwind path in __kernfs_new_node()
- Misc:
- Increase the name size in struct auxiliary_device_id to 40 characters
- Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
alloc_workqueue()
- Platform:
- Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap functions
- Rust:
- Auxiliary:
- Unregister auxiliary device on parent device unbind
- Move parent() to impl Device; implement device context aware parent() for
Device<Bound>
- Illustrate how to safely obtain a driver's device private data when
calling from an auxiliary driver into the parant device driver
- DebugFs:
- Implement support for binary large objects
- Device:
- Let probe() return the driver's device private data as pinned initializer,
i.e. impl PinInit<Self, Error>
- Implement safe accessor for a driver's device private data for
Device<Bound> (returned reference can't out-live driver binding and
guarantees the correct private data type)
- Implement AsBusDevice trait, to be used by class device abstractions to
derive the bus device type of the parent device
- DMA:
- Store raw pointer of allocation as NonNull
- Use start_ptr() and start_ptr_mut() to inherit correct mutability of self
- FS:
- Add file::Offset type alias
- I2C:
- Add abstractions for I2C device / driver infrastructure
- Implement abstractions for manual I2C device registrations
- I/O:
- Use "kernel vertical" style for imports
- Define ResourceSize as resource_size_t
- Move ResourceSize to top-level I/O module
- Add type alias for phys_addr_t
- Implement Rust version of read_poll_timeout_atomic()
- PCI:
- Use "kernel vertical" style for imports
- Move I/O and IRQ infrastructure to separate files
- Add support for PCI interrupt vectors
- Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert an
IrqVector bound to specific pci::Device into an IrqRequest bound to the
same pci::Device's parent Device
- Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
- PinInit:
- Add {pin_}init_scope() to execute code before creating an initializer
- Platform:
- Leverage pin_init_scope() to get rid of redundant Result in IRQ methods
- Timekeeping:
- Implement abstraction of udelay()
- Uaccess:
- Implement read_slice_partial() and read_slice_file() for UserSliceReader
- Implement write_slice_partial() and write_slice_file() for UserSliceWriter
- sysfs
- Prepare the constification of struct attribute
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Merge tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Arch Topology:
- Move parse_acpi_topology() from arm64 to common code for reuse in
RISC-V
CPU:
- Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
- Print a newline (or 0x0A) instead of '(null)' reading
/sys/devices/system/cpu/nohz_full when nohz_full= is not set
debugfs
- Remove (broken) 'no-mount' mode
- Remove redundant access mode checks in debugfs_get_tree() and
debugfs_create_*() functions
Devres:
- Remove unused devm_free_percpu() helper
- Move devm_alloc_percpu() from device.h to devres.h
Firmware Loader:
- Replace simple_strtol() with kstrtoint()
- Do not call cancel_store() when no upload is in progress
kernfs:
- Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
- Fix a missing unwind path in __kernfs_new_node()
Misc:
- Increase the name size in struct auxiliary_device_id to 40
characters
- Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
alloc_workqueue()
Platform:
- Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap
functions
Rust:
- Auxiliary:
- Unregister auxiliary device on parent device unbind
- Move parent() to impl Device; implement device context aware
parent() for Device<Bound>
- Illustrate how to safely obtain a driver's device private data
when calling from an auxiliary driver into the parant device
driver
- DebugFs:
- Implement support for binary large objects
- Device:
- Let probe() return the driver's device private data as pinned
initializer, i.e. impl PinInit<Self, Error>
- Implement safe accessor for a driver's device private data for
Device<Bound> (returned reference can't out-live driver binding
and guarantees the correct private data type)
- Implement AsBusDevice trait, to be used by class device
abstractions to derive the bus device type of the parent device
- DMA:
- Store raw pointer of allocation as NonNull
- Use start_ptr() and start_ptr_mut() to inherit correct
mutability of self
- FS:
- Add file::Offset type alias
- I2C:
- Add abstractions for I2C device / driver infrastructure
- Implement abstractions for manual I2C device registrations
- I/O:
- Use "kernel vertical" style for imports
- Define ResourceSize as resource_size_t
- Move ResourceSize to top-level I/O module
- Add type alias for phys_addr_t
- Implement Rust version of read_poll_timeout_atomic()
- PCI:
- Use "kernel vertical" style for imports
- Move I/O and IRQ infrastructure to separate files
- Add support for PCI interrupt vectors
- Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert
an IrqVector bound to specific pci::Device into an IrqRequest
bound to the same pci::Device's parent Device
- Leverage pin_init_scope() to get rid of redundant Result in IRQ
methods
- PinInit:
- Add {pin_}init_scope() to execute code before creating an
initializer
- Platform:
- Leverage pin_init_scope() to get rid of redundant Result in IRQ
methods
- Timekeeping:
- Implement abstraction of udelay()
- Uaccess:
- Implement read_slice_partial() and read_slice_file() for
UserSliceReader
- Implement write_slice_partial() and write_slice_file() for
UserSliceWriter
sysfs:
- Prepare the constification of struct attribute"
* tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits)
rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
debugfs: Fix default access mode config check
debugfs: Remove broken no-mount mode
debugfs: Remove redundant access mode checks
driver core: Check drivers_autoprobe for all added devices
driver core: WQ_PERCPU added to alloc_workqueue users
driver core: replace use of system_unbound_wq with system_dfl_wq
tick/nohz: Expose housekeeping CPUs in sysfs
tick/nohz: avoid showing '(null)' if nohz_full= not set
sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute
kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node
fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE
mod_devicetable: Bump auxiliary_device_id name size
sysfs: simplify attribute definition macros
samples/kobject: constify 'struct foo_attribute'
samples/kobject: add is_visible() callback to attribute group
sysfs: attribute_group: enable const variants of is_visible()
sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE()
sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS()
sysfs: attribute_group: allow registration of const attribute
...
|
||
|
Linus Torvalds
|
ad952db4a8 |
powerpc updates for 6.19
- Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit. - Fix unpaired stwcx on interrupt exit on 32-bit. - Fix race condition leading to double list-add in mac_hid_toggle_emumouse(). - Fix mprotect on book3s 32-bit. - Fix SLB multihit issue during SLB preload with 64-bit hash MMU. - Add support for crashkernel CMA reservation. - Add die_id and die_cpumask for Power10 & later to expose chip hemispheres. - A series of minor fixes and improvements to the hash SLB code. Thanks to: Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury, Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom, J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor, Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote, Vishal Chourasia. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRjvi15rv0TSTaE+SIF0oADX8seIQUCaTFrpQAKCRAF0oADX8se IaVSAPwJazU+gxYwIe9mB7Mt9w1N04voW7LmX4tcj83i/Xd5QgEAsXfdpYeo3Tvb VPIOXVGVxOxAccyQ7Yw5QF4BPv+8FAc= =h6Ed -----END PGP SIGNATURE----- Merge tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit - Fix unpaired stwcx on interrupt exit on 32-bit - Fix race condition leading to double list-add in mac_hid_toggle_emumouse() - Fix mprotect on book3s 32-bit - Fix SLB multihit issue during SLB preload with 64-bit hash MMU - Add support for crashkernel CMA reservation - Add die_id and die_cpumask for Power10 & later to expose chip hemispheres - A series of minor fixes and improvements to the hash SLB code Thanks to Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury, Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom, J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor, Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote, and Vishal Chourasia. * tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (32 commits) macintosh/via-pmu-backlight: Include <linux/fb.h> and <linux/of.h> powerpc/powermac: backlight: Include <linux/of.h> powerpc/64s/slb: Add no_slb_preload early cmdline param powerpc/64s/slb: Make preload_add return type as void powerpc/ptdump: Dump PXX level info for kernel_page_tables powerpc/64s/pgtable: Enable directMap counters in meminfo for Hash powerpc/64s/hash: Update directMap page counters for Hash powerpc/64s/hash: Hash hpt_order should be only available with Hash MMU powerpc/64s/hash: Improve hash mmu printk messages powerpc/64s/hash: Fix phys_addr_t printf format in htab_initialize() powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format powerpc/64s/hash: Restrict stress_hpt_struct memblock region to within RMA limit powerpc/64s/slb: Fix SLB multihit issue during SLB preload powerpc, mm: Fix mprotect on book3s 32-bit powerpc/smp: Expose die_id and die_cpumask powerpc/83xx: Add a null pointer check to mcu_gpiochip_add arch:powerpc:tools This file was missing shebang line, so added it kexec: Include kernel-end even without crashkernel powerpc: p2020: Rename wdt@ nodes to watchdog@ powerpc: 86xx: Rename wdt@ nodes to watchdog@ ... |
||
|
Linus Torvalds
|
7203ca412f |
Significant patch series in this merge are as follows:
- The 10 patch series "__vmalloc()/kvmalloc() and no-block support" from
Uladzislau Rezki reworks the vmalloc() code to support non-blocking
allocations (GFP_ATOIC, GFP_NOWAIT).
- The 2 patch series "ksm: fix exec/fork inheritance" from xu xin fixes
a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited
across fork/exec.
- The 4 patch series "mm/zswap: misc cleanup of code and documentations"
from SeongJae Park does some light maintenance work on the zswap code.
- The 5 patch series "mm/page_owner: add debugfs files 'show_handles'
and 'show_stacks_handles'" from Mauricio Faria de Oliveira enhances the
/sys/kernel/debug/page_owner debug feature. It adds unique identifiers
to differentiate the various stack traces so that userspace monitoring
tools can better match stack traces over time.
- The 2 patch series "mm/page_alloc: pcp->batch cleanups" from Joshua
Hahn makes some minor alterations to the page allocator's per-cpu-pages
feature.
- The 2 patch series "Improve UFFDIO_MOVE scalability by removing
anon_vma lock" from Lokesh Gidra addresses a scalability issue in
userfaultfd's UFFDIO_MOVE operation.
- The 2 patch series "kasan: cleanups for kasan_enabled() checks" from
Sabyrzhan Tasbolatov performs some cleanup in the KASAN code.
- The 2 patch series "drivers/base/node: fold node register and
unregister functions" from Donet Tom cleans up the NUMA node handling
code a little.
- The 4 patch series "mm: some optimizations for prot numa" from Kefeng
Wang provides some cleanups and small optimizations to the NUMA
allocation hinting code.
- The 5 patch series "mm/page_alloc: Batch callers of
free_pcppages_bulk" from Joshua Hahn addresses long lock hold times at
boot on large machines. These were causing (harmless) softlockup
warnings.
- The 2 patch series "optimize the logic for handling dirty file folios
during reclaim" from Baolin Wang removes some now-unnecessary work from
page reclaim.
- The 10 patch series "mm/damon: allow DAMOS auto-tuned for per-memcg
per-node memory usage" from SeongJae Park enhances the DAMOS auto-tuning
feature.
- The 2 patch series "mm/damon: fixes for address alignment issues in
DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan fixes DAMON_LRU_SORT
and DAMON_RECLAIM with certain userspace configuration.
- The 15 patch series "expand mmap_prepare functionality, port more
users" from Lorenzo Stoakes enhances the new(ish)
file_operations.mmap_prepare() method and ports additional callsites
from the old ->mmap() over to ->mmap_prepare().
- The 8 patch series "Fix stale IOTLB entries for kernel address space"
from Lu Baolu fixes a bug (and possible security issue on non-x86) in
the IOMMU code. In some situations the IOMMU could be left hanging onto
a stale kernel pagetable entry.
- The 4 patch series "mm/huge_memory: cleanup __split_unmapped_folio()"
from Wei Yang cleans up and optimizes the folio splitting code.
- The 5 patch series "mm, swap: misc cleanup and bugfix" from Kairui
Song implements some cleanups and a minor fix in the swap discard code.
- The 8 patch series "mm/damon: misc documentation fixups" from SeongJae
Park does as advertised.
- The 9 patch series "mm/damon: support pin-point targets removal" from
SeongJae Park permits userspace to remove a specific monitoring target
in the middle of the current targets list.
- The 2 patch series "mm: MISC follow-up patches for linux/pgalloc.h"
from Harry Yoo implements a couple of cleanups related to mm header file
inclusion.
- The 2 patch series "mm/swapfile.c: select swap devices of default
priority round robin" from Baoquan He improves the selection of swap
devices for NUMA machines.
- The 3 patch series "mm: Convert memory block states (MEM_*) macros to
enums" from Israel Batista changes the memory block labels from macros
to enums so they will appear in kernel debug info.
- The 3 patch series "ksm: perform a range-walk to jump over holes in
break_ksm" from Pedro Demarchi Gomes addresses an inefficiency when KSM
unmerges an address range.
- The 22 patch series "mm/damon/tests: fix memory bugs in kunit tests"
from SeongJae Park fixes leaks and unhandled malloc() failures in DAMON
userspace unit tests.
- The 2 patch series "some cleanups for pageout()" from Baolin Wang
cleans up a couple of minor things in the page scanner's
writeback-for-eviction code.
- The 2 patch series "mm/hugetlb: refactor sysfs/sysctl interfaces" from
Hui Zhu moves hugetlb's sysfs/sysctl handling code into a new file.
- The 9 patch series "introduce VM_MAYBE_GUARD and make it sticky" from
Lorenzo Stoakes makes the VMA guard regions available in /proc/pid/smaps
and improves the mergeability of guarded VMAs.
- The 2 patch series "mm: perform guard region install/remove under VMA
lock" from Lorenzo Stoakes reduces mmap lock contention for callers
performing VMA guard region operations.
- The 2 patch series "vma_start_write_killable" from Matthew Wilcox
starts work in permitting applications to be killed when they are
waiting on a read_lock on the VMA lock.
- The 11 patch series "mm/damon/tests: add more tests for online
parameters commit" from SeongJae Park adds additional userspace testing
of DAMON's "commit" feature.
- The 9 patch series "mm/damon: misc cleanups" from SeongJae Park does
that.
- The 2 patch series "make VM_SOFTDIRTY a sticky VMA flag" from Lorenzo
Stoakes addresses the possible loss of a VMA's VM_SOFTDIRTY flag when
that VMA is merged with another.
- The 16 patch series "mm: support device-private THP" from Balbir Singh
introduces support for Transparent Huge Page (THP) migration in zone
device-private memory.
- The 3 patch series "Optimize folio split in memory failure" from Zi
Yan optimizes folio split operations in the memory failure code.
- The 2 patch series "mm/huge_memory: Define split_type and consolidate
split support checks" from Wei Yang provides some more cleanups in the
folio splitting code.
- The 16 patch series "mm: remove is_swap_[pte, pmd]() + non-swap
entries, introduce leaf entries" from Lorenzo Stoakes cleans up our
handling of pagetable leaf entries by introducing the concept of
'software leaf entries', of type softleaf_t.
- The 4 patch series "reparent the THP split queue" from Muchun Song
reparents the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory resources.
- The 3 patch series "unify PMD scan results and remove redundant
cleanup" from Wei Yang does a little cleanup in the hugepage collapse
code.
- The 6 patch series "zram: introduce writeback bio batching" from
Sergey Senozhatsky improves zram writeback efficiency by introducing
batched bio writeback support.
- The 4 patch series "memcg: cleanup the memcg stats interfaces" from
Shakeel Butt cleans up our handling of the interrupt safety of some
memcg stats.
- The 4 patch series "make vmalloc gfp flags usage more apparent" from
Vishal Moola cleans up vmalloc's handling of incoming GFP flags.
- The 6 patch series "mm: Add soft-dirty and uffd-wp support for RISC-V"
from Chunyan Zhang teches soft dirty and userfaultfd write protect
tracking to use RISC-V's Svrsw60t59b extension.
- The 5 patch series "mm: swap: small fixes and comment cleanups" from
Youngjun Park fixes a small bug and cleans up some of the swap code.
- The 4 patch series "initial work on making VMA flags a bitmap" from
Lorenzo Stoakes starts work on converting the vma struct's flags to a
bitmap, so we stop running out of them, especially on 32-bit.
- The 2 patch series "mm/swapfile: fix and cleanup swap list iterations"
from Youngjun Park addresses a possible bug in the swap discard code and
cleans things up a little.
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Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"__vmalloc()/kvmalloc() and no-block support" (Uladzislau Rezki)
Rework the vmalloc() code to support non-blocking allocations
(GFP_ATOIC, GFP_NOWAIT)
"ksm: fix exec/fork inheritance" (xu xin)
Fix a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not
inherited across fork/exec
"mm/zswap: misc cleanup of code and documentations" (SeongJae Park)
Some light maintenance work on the zswap code
"mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" (Mauricio Faria de Oliveira)
Enhance the /sys/kernel/debug/page_owner debug feature by adding
unique identifiers to differentiate the various stack traces so
that userspace monitoring tools can better match stack traces over
time
"mm/page_alloc: pcp->batch cleanups" (Joshua Hahn)
Minor alterations to the page allocator's per-cpu-pages feature
"Improve UFFDIO_MOVE scalability by removing anon_vma lock" (Lokesh Gidra)
Address a scalability issue in userfaultfd's UFFDIO_MOVE operation
"kasan: cleanups for kasan_enabled() checks" (Sabyrzhan Tasbolatov)
"drivers/base/node: fold node register and unregister functions" (Donet Tom)
Clean up the NUMA node handling code a little
"mm: some optimizations for prot numa" (Kefeng Wang)
Cleanups and small optimizations to the NUMA allocation hinting
code
"mm/page_alloc: Batch callers of free_pcppages_bulk" (Joshua Hahn)
Address long lock hold times at boot on large machines. These were
causing (harmless) softlockup warnings
"optimize the logic for handling dirty file folios during reclaim" (Baolin Wang)
Remove some now-unnecessary work from page reclaim
"mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" (SeongJae Park)
Enhance the DAMOS auto-tuning feature
"mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" (Quanmin Yan)
Fix DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace
configuration
"expand mmap_prepare functionality, port more users" (Lorenzo Stoakes)
Enhance the new(ish) file_operations.mmap_prepare() method and port
additional callsites from the old ->mmap() over to ->mmap_prepare()
"Fix stale IOTLB entries for kernel address space" (Lu Baolu)
Fix a bug (and possible security issue on non-x86) in the IOMMU
code. In some situations the IOMMU could be left hanging onto a
stale kernel pagetable entry
"mm/huge_memory: cleanup __split_unmapped_folio()" (Wei Yang)
Clean up and optimize the folio splitting code
"mm, swap: misc cleanup and bugfix" (Kairui Song)
Some cleanups and a minor fix in the swap discard code
"mm/damon: misc documentation fixups" (SeongJae Park)
"mm/damon: support pin-point targets removal" (SeongJae Park)
Permit userspace to remove a specific monitoring target in the
middle of the current targets list
"mm: MISC follow-up patches for linux/pgalloc.h" (Harry Yoo)
A couple of cleanups related to mm header file inclusion
"mm/swapfile.c: select swap devices of default priority round robin" (Baoquan He)
improve the selection of swap devices for NUMA machines
"mm: Convert memory block states (MEM_*) macros to enums" (Israel Batista)
Change the memory block labels from macros to enums so they will
appear in kernel debug info
"ksm: perform a range-walk to jump over holes in break_ksm" (Pedro Demarchi Gomes)
Address an inefficiency when KSM unmerges an address range
"mm/damon/tests: fix memory bugs in kunit tests" (SeongJae Park)
Fix leaks and unhandled malloc() failures in DAMON userspace unit
tests
"some cleanups for pageout()" (Baolin Wang)
Clean up a couple of minor things in the page scanner's
writeback-for-eviction code
"mm/hugetlb: refactor sysfs/sysctl interfaces" (Hui Zhu)
Move hugetlb's sysfs/sysctl handling code into a new file
"introduce VM_MAYBE_GUARD and make it sticky" (Lorenzo Stoakes)
Make the VMA guard regions available in /proc/pid/smaps and
improves the mergeability of guarded VMAs
"mm: perform guard region install/remove under VMA lock" (Lorenzo Stoakes)
Reduce mmap lock contention for callers performing VMA guard region
operations
"vma_start_write_killable" (Matthew Wilcox)
Start work on permitting applications to be killed when they are
waiting on a read_lock on the VMA lock
"mm/damon/tests: add more tests for online parameters commit" (SeongJae Park)
Add additional userspace testing of DAMON's "commit" feature
"mm/damon: misc cleanups" (SeongJae Park)
"make VM_SOFTDIRTY a sticky VMA flag" (Lorenzo Stoakes)
Address the possible loss of a VMA's VM_SOFTDIRTY flag when that
VMA is merged with another
"mm: support device-private THP" (Balbir Singh)
Introduce support for Transparent Huge Page (THP) migration in zone
device-private memory
"Optimize folio split in memory failure" (Zi Yan)
"mm/huge_memory: Define split_type and consolidate split support checks" (Wei Yang)
Some more cleanups in the folio splitting code
"mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" (Lorenzo Stoakes)
Clean up our handling of pagetable leaf entries by introducing the
concept of 'software leaf entries', of type softleaf_t
"reparent the THP split queue" (Muchun Song)
Reparent the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory
resources
"unify PMD scan results and remove redundant cleanup" (Wei Yang)
A little cleanup in the hugepage collapse code
"zram: introduce writeback bio batching" (Sergey Senozhatsky)
Improve zram writeback efficiency by introducing batched bio
writeback support
"memcg: cleanup the memcg stats interfaces" (Shakeel Butt)
Clean up our handling of the interrupt safety of some memcg stats
"make vmalloc gfp flags usage more apparent" (Vishal Moola)
Clean up vmalloc's handling of incoming GFP flags
"mm: Add soft-dirty and uffd-wp support for RISC-V" (Chunyan Zhang)
Teach soft dirty and userfaultfd write protect tracking to use
RISC-V's Svrsw60t59b extension
"mm: swap: small fixes and comment cleanups" (Youngjun Park)
Fix a small bug and clean up some of the swap code
"initial work on making VMA flags a bitmap" (Lorenzo Stoakes)
Start work on converting the vma struct's flags to a bitmap, so we
stop running out of them, especially on 32-bit
"mm/swapfile: fix and cleanup swap list iterations" (Youngjun Park)
Address a possible bug in the swap discard code and clean things
up a little
[ This merge also reverts commit
|
||
|
Linus Torvalds
|
980190a947 |
MFD for v6.19
* Add Core, Regulator, Onkey and Battery Charger support for the NXP PF1550
Power Management IC (PMIC).
* Introduce __SMC_KEY macro to fix GCC 15.2.1 errors in macsmc.
* Add board definitions for TQMxCU1-HPCM and TQMxCU2-HPCM to the tqmx86 driver.
* Add support for Broadcom BCM2712 SoC to the bcm2835-pm driver.
* Hook up the qnap-mcu-eeprom sub-device to qnap-mcu.
* Enable compile testing for the Altera SOCFPGA System Manager driver.
* Fix device reference leak in altr_sysmgr_regmap_lookup_by_phandle().
* Reserve the unused second I2C address for DA9063 to prevent userspace
interference.
* Fix resource leak in da9055_device_init() by calling regmap_del_irq_chip()
in the error path.
* Fix potential IRQ chip conflict when probing multiple MAX77620 devices by
using devm_kmemdup for regmap_irq_chip.
* Return -EPROBE_DEFER when a syscon devuice is not found to allow deferred
probing.
* Update email address for the PF1550 PMIC driver in MAINTAINERS.
* Correct file entry for PF1550 MFD driver in MAINTAINERS from pfd1550.h to
pf1550.h.
* Calculate checksum on the actual number of received bytes in qnap-mcu for
error messages.
* Use -EPROTO instead of -EIO for checksum errors in qnap-mcu.
* Add proper error handling for command errors (e.g., "@8", "@9") in qnap-mcu.
* Fix missing irq_domain_remove() in error path of mt63{58,97}_irq_init().
* Mark SMC write buffer arguments as const in apple_smc_write(), apple_smc_rw(),
and apple_smc_write_atomic().
* Simplify the error handling path in da9055_device_init() by removing a
redundant mfd_remove_devices() call.
* Use regmap_reg_range() and a real one-element array for pmic_status_range in
rohm-bd718x7 for cleaner initialization.
* Remove select I2C_K1 from MFD_SPACEMIT_P1 to avoid build failures when
I2C_K1's dependencies are disabled.
* Remove unneeded semicolon from ls2k_bmc_recover_pci_data().
* Drop OF dependency for MFD_MAX5970 in Kconfig to allow wider compile testing
and non-OF systems.
* Make OF ID table style consistent in simple-mfd-i2c driver.
* Update header inclusions in simple-mfd-i2c to follow IWYU (Include What You
Use) principle.
* Move checksum verification logic to a separate function in qnap-mcu.
* Use chained IRQs for S2MPG10 in the Samsung SEC driver to simplify interrupt
handling.
* Drop a stray semicolon from sec-irq.c.
* Remove the unused TI WL1273 FM radio core driver.
* Remove the unused wl1273-core.h header and tidy up its reference in
documentation.
* Add Device Tree binding for the NXP PF1550 PMIC.
* Add missing GPIO pins and supply properties to the Silergy SY7636A PMIC
binding.
* Add interrupt-controller property to the Maxim MAX77705 binding for
sub-device interrupt source determination.
* Add Device Tree binding for the Renesas R2A11302FT PMIC.
* Allow the wakeup-source property in the Dialog DA9063 binding.
* Make interrupt-related properties optional in the TI TPS65910 PMIC binding.
* Document the Qualcomm PMIV0104 PMIC compatible string.
* Document the Qualcomm PM7550 PMIC compatible string.
* Enable power button subnode for TWL603x in the TI TWL binding.
* Convert the Dialog DA9052/53 I2C binding from .txt to .yaml format,
including compatible string fallback and interrupt properties.
* Document control-scb and sysreg-scb syscons on pic64gx with fallback
compatibles.
* Document sama7g5-sfrbu and sama7d65-sfrbu syscons with fallback to
atmel,sama5d2-sfrbu.
* Fix LEDs node schema in fsl,mc13xxx binding by adding led@ child nodes and
missing properties.
* Add mt7981-topmisc compatible string to the syscon binding.
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Merge tag 'mfd-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Updates:
- Add Core, Regulator, Onkey and Battery Charger support for the NXP
PF1550 Power Management IC (PMIC)
- Introduce __SMC_KEY macro to fix GCC 15.2.1 errors in macsmc
- Add board definitions for TQMxCU1-HPCM and TQMxCU2-HPCM to the
tqmx86 driver
- Add support for Broadcom BCM2712 SoC to the bcm2835-pm driver
- Hook up the qnap-mcu-eeprom sub-device to qnap-mcu
Fixes:
- Enable compile testing for the Altera SOCFPGA System Manager driver
- Fix device reference leak in altr_sysmgr_regmap_lookup_by_phandle()
- Reserve the unused second I2C address for DA9063 to prevent
userspace interference
- Fix resource leak in da9055_device_init() by calling
regmap_del_irq_chip() in the error path
- Fix potential IRQ chip conflict when probing multiple MAX77620
devices by using devm_kmemdup for regmap_irq_chip
- Return -EPROBE_DEFER when a syscon devuice is not found to allow
deferred probing
- Update email address for the PF1550 PMIC driver in MAINTAINERS
- Correct file entry for PF1550 MFD driver in MAINTAINERS from
pfd1550.h to pf1550.h
- Calculate checksum on the actual number of received bytes in
qnap-mcu for error messages
- Use -EPROTO instead of -EIO for checksum errors in qnap-mcu
- Add proper error handling for command errors (e.g., "@8", "@9") in
qnap-mcu
- Fix missing irq_domain_remove() in error path of
mt63{58,97}_irq_init()
Cleanups:
- Mark SMC write buffer arguments as const in apple_smc_write(),
apple_smc_rw(), and apple_smc_write_atomic()
- Simplify the error handling path in da9055_device_init() by
removing a redundant mfd_remove_devices() call
- Use regmap_reg_range() and a real one-element array for
pmic_status_range in rohm-bd718x7 for cleaner initialization
- Remove select I2C_K1 from MFD_SPACEMIT_P1 to avoid build failures
when I2C_K1's dependencies are disabled
- Remove unneeded semicolon from ls2k_bmc_recover_pci_data()
- Drop OF dependency for MFD_MAX5970 in Kconfig to allow wider
compile testing and non-OF systems
- Make OF ID table style consistent in simple-mfd-i2c driver
- Update header inclusions in simple-mfd-i2c to follow IWYU (Include
What You Use) principle
- Move checksum verification logic to a separate function in qnap-mcu
- Use chained IRQs for S2MPG10 in the Samsung SEC driver to simplify
interrupt handling
- Drop a stray semicolon from sec-irq.c
Removals:
- Remove the unused TI WL1273 FM radio core driver
- Remove the unused wl1273-core.h header and tidy up its reference in
documentation
Device tree bindings:
- Add Device Tree binding for the NXP PF1550 PMIC
- Add missing GPIO pins and supply properties to the Silergy SY7636A
PMIC binding
- Add interrupt-controller property to the Maxim MAX77705 binding for
sub-device interrupt source determination
- Add Device Tree binding for the Renesas R2A11302FT PMIC
- Allow the wakeup-source property in the Dialog DA9063 binding
- Make interrupt-related properties optional in the TI TPS65910 PMIC
binding
- Document the Qualcomm PMIV0104 PMIC compatible string
- Document the Qualcomm PM7550 PMIC compatible string
- Enable power button subnode for TWL603x in the TI TWL binding
- Convert the Dialog DA9052/53 I2C binding from .txt to .yaml format,
including compatible string fallback and interrupt properties
- Document control-scb and sysreg-scb syscons on pic64gx with
fallback compatibles
- Document sama7g5-sfrbu and sama7d65-sfrbu syscons with fallback to
atmel,sama5d2-sfrbu
- Fix LEDs node schema in fsl,mc13xxx binding by adding led@ child
nodes and missing properties
- Add mt7981-topmisc compatible string to the syscon binding"
* tag 'mfd-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (42 commits)
mfd: sec: Drop a stray semicolon
mfd: qnap-mcu: Hook up the EEPROM sub-device
dt-bindings: mfd: syscon: Add mt7981-topmisc
dt-bindings: mfd: fsl,mc13xxx: Fix LEDs node schema
mfd: mt6358-irq: Fix missing irq_domain_remove() in error path
mfd: mt6397-irq: Fix missing irq_domain_remove() in error path
dt-bindings: mfd: Document syscons falling back to atmel,sama5d2-sfrbu
dt-bindings: mfd: Document control-scb and sysreg-scb on pic64gx
dt-bindings: mfd: Convert dlg,da9052-i2c.txt to yaml format
mfd: sec: Use chained IRQs for s2mpg10
mfd: qnap-mcu: Add proper error handling for command errors
mfd: qnap-mcu: Move checksum verification to its own function
mfd: qnap-mcu: Use EPROTO in stead of EIO on checksum errors
mfd: qnap-mcu: Calculate the checksum on the actual number of bytes received
mfd: simple-mfd-i2c: Don't use "proxy" headers
mfd: simple-mfd-i2c: Make ID table style consistent
mfd: Kconfig: Drop OF dependency on MFD_MAX5970
mfd: ls2kbmc: Remove unneeded semicolon from ls2k_bmc_recover_pci_data()
dt-bindings: mfd: twl: Enable power button also for TWL603X
MAINTAINERS: Adjust file entry in NXP PF1550 PMIC MFD DRIVER
...
|
||
|
Joshua Hahn
|
83c8f7b5e1 |
mm/mm_init: Introduce a boot parameter for check_pages
Use-after-free and double-free bugs can be very difficult to track down.
The kernel is good at tracking these and preventing bad pages from being
used/created through simple checks gated behind "check_pages_enabled".
Currently, the only ways to enable this flag is by building with
CONFIG_DEBUG_VM, or as a side effect of other checks such as
init_on_{alloc, free}, page_poisoning, or debug_pagealloc among others.
These solutions are powerful, but may often be too coarse in balancing
the performance vs. safety that a user may want, particularly in
latency-sensitive production environments.
Introduce a new boot parameter "check_pages", which enables page checking
with no other side effects. It takes kstrbool-able inputs as an argument
(i.e. 0/1, true/false, on/off, ...). This patch is backwards-compatible;
setting CONFIG_DEBUG_VM still enables page checking.
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Link: https://patch.msgid.link/20251201180739.2330474-1-joshua.hahnjy@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
|
||
|
Linus Torvalds
|
d7aa60d966 |
[GIT PULL for v6.19] media updates
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Merge tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New drivers:
- Mali-C55 ISP
- Rockchip VICAP (RKCIF)
- RKVDEC HEVC Decoder
- Renesas RZV2H IVC
- Sony IMX111 CMOS sensor driver
- Removed STi C8SECTPFE Driver
- Added a V4L2 ISP generic framework
- Usual set of cleanup, fixes and driver improvements
* tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (249 commits)
media: rockchip: rkcif: add support for rk3568 vicap mipi capture
media: rockchip: rkcif: add support for rk3568 vicap dvp capture
media: rockchip: rkcif: add support for px30 vip dvp capture
media: rockchip: rkcif: add abstraction for dma blocks
media: rockchip: rkcif: add abstraction for interface and crop blocks
media: rockchip: add driver for the rockchip camera interface
media: dt-bindings: add rockchip rk3568 vicap
media: dt-bindings: add rockchip px30 vip
media: dt-bindings: video-interfaces: add defines for sampling modes
Documentation: admin-guide: media: add rockchip camera interface
media: mali-c55: Mark pm handlers as __maybe_unused
media: mali-c55: Assert ISP blocks size correctness
media: v4l2-isp: Rename block_info to block_type_info
MAINTAINERS: Add entry for rzv2h-ivc driver
media: platform: Add Renesas Input Video Control block driver
dt-bindings: media: Add bindings for the RZ/V2H(P) IVC block
Documentation: media: mali-c55: Document the mali-c55 parameter setting
media: platform: Add mali-c55 parameters video node
media: uapi: Add parameters structs to mali-c55-config.h
media: mali-c55: Add image formats for Mali-C55 parameters buffer
...
|
||
|
Linus Torvalds
|
cc25df3e2e |
for-6.19/block-20251201
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Merge tag 'for-6.19/block-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- Fix head insertion for mq-deadline, a regression from when priority
support was added
- Series simplifying and improving the ublk user copy code
- Various ublk related cleanups
- Fixup REQ_NOWAIT handling in loop/zloop, clearing NOWAIT when the
request is punted to a thread for handling
- Merge and then later revert loop dio nowait support, as it ended up
causing excessive stack usage for when the inline issue code needs to
dip back into the full file system code
- Improve auto integrity code, making it less deadlock prone
- Speedup polled IO handling, but manually managing the hctx lookups
- Fixes for blk-throttle for SSD devices
- Small series with fixes for the S390 dasd driver
- Add support for caching zones, avoiding unnecessary report zone
queries
- MD pull requests via Yu:
- fix null-ptr-dereference regression for dm-raid0
- fix IO hang for raid5 when array is broken with IO inflight
- remove legacy 1s delay to speed up system shutdown
- change maintainer's email address
- data can be lost if array is created with different lbs devices,
fix this problem and record lbs of the array in metadata
- fix rcu protection for md_thread
- fix mddev kobject lifetime regression
- enable atomic writes for md-linear
- some cleanups
- bcache updates via Coly
- remove useless discard and cache device code
- improve usage of per-cpu workqueues
- Reorganize the IO scheduler switching code, fixing some lockdep
reports as well
- Improve the block layer P2P DMA support
- Add support to the block tracing code for zoned devices
- Segment calculation improves, and memory alignment flexibility
improvements
- Set of prep and cleanups patches for ublk batching support. The
actual batching hasn't been added yet, but helps shrink down the
workload of getting that patchset ready for 6.20
- Fix for how the ps3 block driver handles segments offsets
- Improve how block plugging handles batch tag allocations
- nbd fixes for use-after-free of the configuration on device clear/put
- Set of improvements and fixes for zloop
- Add Damien as maintainer of the block zoned device code handling
- Various other fixes and cleanups
* tag 'for-6.19/block-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (162 commits)
block/rnbd: correct all kernel-doc complaints
blk-mq: use queue_hctx in blk_mq_map_queue_type
md: remove legacy 1s delay in md_notify_reboot
md/raid5: fix IO hang when array is broken with IO inflight
md: warn about updating super block failure
md/raid0: fix NULL pointer dereference in create_strip_zones() for dm-raid
sbitmap: fix all kernel-doc warnings
ublk: add helper of __ublk_fetch()
ublk: pass const pointer to ublk_queue_is_zoned()
ublk: refactor auto buffer register in ublk_dispatch_req()
ublk: add `union ublk_io_buf` with improved naming
ublk: add parameter `struct io_uring_cmd *` to ublk_prep_auto_buf_reg()
kfifo: add kfifo_alloc_node() helper for NUMA awareness
blk-mq: fix potential uaf for 'queue_hw_ctx'
blk-mq: use array manage hctx map instead of xarray
ublk: prevent invalid access with DEBUG
s390/dasd: Use scnprintf() instead of sprintf()
s390/dasd: Move device name formatting into separate function
s390/dasd: Remove unnecessary debugfs_create() return checks
s390/dasd: Fix gendisk parent after copy pair swap
...
|
||
|
Linus Torvalds
|
8f7aa3d3c7 |
Networking changes for 6.19.
Core & protocols
----------------
- Replace busylock at the Tx queuing layer with a lockless list. Resulting
in a 300% (4x) improvement on heavy TX workloads, sending twice the
number of packets per second, for half the cpu cycles.
- Allow constantly busy flows to migrate to a more suitable CPU/NIC
queue. Normally we perform queue re-selection when flow comes out
of idle, but under extreme circumstances the flows may be constantly
busy. Add sysctl to allow periodic rehashing even if it'd risk packet
reordering.
- Optimize the NAPI skb cache, make it larger, use it in more paths.
- Attempt returning Tx skbs to the originating CPU (like we already did
for Rx skbs).
- Various data structure layout and prefetch optimizations from Eric.
- Remove ktime_get() from the recvmsg() fast path, ktime_get() is sadly
quite expensive on recent AMD machines.
- Extend threaded NAPI polling to allow the kthread busy poll for packets.
- Make MPTCP use Rx backlog processing. This lowers the lock pressure,
improving the Rx performance.
- Support memcg accounting of MPTCP socket memory.
- Allow admin to opt sockets out of global protocol memory accounting
(using a sysctl or BPF-based policy). The global limits are a poor fit
for modern container workloads, where limits are imposed using cgroups.
- Improve heuristics for when to kick off AF_UNIX garbage collection.
- Allow users to control TCP SACK compression, and default to 33% of RTT.
- Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid unnecessarily
aggressive rcvbuf growth and overshot when the connection RTT is low.
- Preserve skb metadata space across skb_push / skb_pull operations.
- Support for IPIP encapsulation in the nftables flowtable offload.
- Support appending IP interface information to ICMP messages (RFC 5837).
- Support setting max record size in TLS (RFC 8449).
- Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.
- Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.
- Let users configure the number of write buffers in SMC.
- Add new struct sockaddr_unsized for sockaddr of unknown length,
from Kees.
- Some conversions away from the crypto_ahash API, from Eric Biggers.
- Some preparations for slimming down struct page.
- YAML Netlink protocol spec for WireGuard.
- Add a tool on top of YAML Netlink specs/lib for reporting commonly
computed derived statistics and summarized system state.
Driver API
----------
- Add CAN XL support to the CAN Netlink interface.
- Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics,
as defined by the OPEN Alliance's "Advanced diagnostic features
for 100BASE-T1 automotive Ethernet PHYs" specification.
- Add DPLL phase-adjust-gran pin attribute (and implement it in zl3073x).
- Refactor xfrm_input lock to reduce contention when NIC offloads IPsec
and performs RSS.
- Add info to devlink params whether the current setting is the default
or a user override. Allow resetting back to default.
- Add standard device stats for PSP crypto offload.
- Leverage DSA frame broadcast to implement simple HSR frame duplication
for a lot of switches without dedicated HSR offload.
- Add uAPI defines for 1.6Tbps link modes.
Device drivers
--------------
- Add Motorcomm YT921x gigabit Ethernet switch support.
- Add MUCSE driver for N500/N210 1GbE NIC series.
- Convert drivers to support dedicated ops for timestamping control,
and away from the direct IOCTL handling. While at it support GET
operations for PHY timestamping.
- Add (and convert most drivers to) a dedicated ethtool callback
for reading the Rx ring count.
- Significant refactoring efforts in the STMMAC driver, which supports
Synopsys turn-key MAC IP integrated into a ton of SoCs.
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support PPS in/out on all pins
- Intel (100G, ice, idpf):
- ice: implement standard ethtool and timestamping stats
- i40e: support setting the max number of MAC addresses per VF
- iavf: support RSS of GTP tunnels for 5G and LTE deployments
- nVidia/Mellanox (mlx5):
- reduce downtime on interface reconfiguration
- disable being an XDP redirect target by default (same as other
drivers) to avoid wasting resources if feature is unused
- Meta (fbnic):
- add support for Linux-managed PCS on 25G, 50G, and 100G links
- Wangxun:
- support Rx descriptor merge, and Tx head writeback
- support Rx coalescing offload
- support 25G SPF and 40G QSFP modules
- Ethernet virtual:
- Google (gve):
- allow ethtool to configure rx_buf_len
- implement XDP HW RX Timestamping support for DQ descriptor format
- Microsoft vNIC (mana):
- support HW link state events
- handle hardware recovery events when probing the device
- Ethernet NICs consumer, and embedded:
- usbnet: add support for Byte Queue Limits (BQL)
- AMD (amd-xgbe):
- add device selftests
- NXP (enetc):
- add i.MX94 support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- bcmasp: add support for PHY-based Wake-on-LAN
- Broadcom switches (b53):
- support port isolation
- support BCM5389/97/98 and BCM63XX ARL formats
- Lantiq/MaxLinear switches:
- support bridge FDB entries on the CPU port
- use regmap for register access
- allow user to enable/disable learning
- support Energy Efficient Ethernet
- support configuring RMII clock delays
- add tagging driver for MaxLinear GSW1xx switches
- Synopsys (stmmac):
- support using the HW clock in free running mode
- add Eswin EIC7700 support
- add Rockchip RK3506 support
- add Altera Agilex5 support
- Cadence (macb):
- cleanup and consolidate descriptor and DMA address handling
- add EyeQ5 support
- TI:
- icssg-prueth: support AF_XDP
- Airoha access points:
- add missing Ethernet stats and link state callback
- add AN7583 support
- support out-of-order Tx completion processing
- Power over Ethernet:
- pd692x0: preserve PSE configuration across reboots
- add support for TPS23881B devices
- Ethernet PHYs:
- Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
- Support 50G SerDes and 100G interfaces in Linux-managed PHYs
- micrel:
- support for non PTP SKUs of lan8814
- enable in-band auto-negotiation on lan8814
- realtek:
- cable testing support on RTL8224
- interrupt support on RTL8221B
- motorcomm: support for PHY LEDs on YT853
- microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
- mscc: support for PHY LED control
- CAN drivers:
- m_can: add support for optional reset and system wake up
- remove can_change_mtu() obsoleted by core handling
- mcp251xfd: support GPIO controller functionality
- Bluetooth:
- add initial support for PASTa
- WiFi:
- split ieee80211.h file, it's way too big
- improvements in VHT radiotap reporting, S1G, Channel Switch
Announcement handling, rate tracking in mesh networks
- improve multi-radio monitor mode support, and add a cfg80211 debugfs
interface for it
- HT action frame handling on 6 GHz
- initial chanctx work towards NAN
- MU-MIMO sniffer improvements
- WiFi drivers:
- RealTek (rtw89):
- support USB devices RTL8852AU and RTL8852CU
- initial work for RTL8922DE
- improved injection support
- Intel:
- iwlwifi: new sniffer API support
- MediaTek (mt76):
- WED support for >32-bit DMA
- airoha NPU support
- regdomain improvements
- continued WiFi7/MLO work
- Qualcomm/Atheros:
- ath10k: factory test support
- ath11k: TX power insertion support
- ath12k: BSS color change support
- ath12k: statistics improvements
- brcmfmac: Acer A1 840 tablet quirk
- rtl8xxxu: 40 MHz connection fixes/support
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Replace busylock at the Tx queuing layer with a lockless list.
Resulting in a 300% (4x) improvement on heavy TX workloads, sending
twice the number of packets per second, for half the cpu cycles.
- Allow constantly busy flows to migrate to a more suitable CPU/NIC
queue.
Normally we perform queue re-selection when flow comes out of idle,
but under extreme circumstances the flows may be constantly busy.
Add sysctl to allow periodic rehashing even if it'd risk packet
reordering.
- Optimize the NAPI skb cache, make it larger, use it in more paths.
- Attempt returning Tx skbs to the originating CPU (like we already
did for Rx skbs).
- Various data structure layout and prefetch optimizations from Eric.
- Remove ktime_get() from the recvmsg() fast path, ktime_get() is
sadly quite expensive on recent AMD machines.
- Extend threaded NAPI polling to allow the kthread busy poll for
packets.
- Make MPTCP use Rx backlog processing. This lowers the lock
pressure, improving the Rx performance.
- Support memcg accounting of MPTCP socket memory.
- Allow admin to opt sockets out of global protocol memory accounting
(using a sysctl or BPF-based policy). The global limits are a poor
fit for modern container workloads, where limits are imposed using
cgroups.
- Improve heuristics for when to kick off AF_UNIX garbage collection.
- Allow users to control TCP SACK compression, and default to 33% of
RTT.
- Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid
unnecessarily aggressive rcvbuf growth and overshot when the
connection RTT is low.
- Preserve skb metadata space across skb_push / skb_pull operations.
- Support for IPIP encapsulation in the nftables flowtable offload.
- Support appending IP interface information to ICMP messages (RFC
5837).
- Support setting max record size in TLS (RFC 8449).
- Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.
- Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.
- Let users configure the number of write buffers in SMC.
- Add new struct sockaddr_unsized for sockaddr of unknown length,
from Kees.
- Some conversions away from the crypto_ahash API, from Eric Biggers.
- Some preparations for slimming down struct page.
- YAML Netlink protocol spec for WireGuard.
- Add a tool on top of YAML Netlink specs/lib for reporting commonly
computed derived statistics and summarized system state.
Driver API:
- Add CAN XL support to the CAN Netlink interface.
- Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as
defined by the OPEN Alliance's "Advanced diagnostic features for
100BASE-T1 automotive Ethernet PHYs" specification.
- Add DPLL phase-adjust-gran pin attribute (and implement it in
zl3073x).
- Refactor xfrm_input lock to reduce contention when NIC offloads
IPsec and performs RSS.
- Add info to devlink params whether the current setting is the
default or a user override. Allow resetting back to default.
- Add standard device stats for PSP crypto offload.
- Leverage DSA frame broadcast to implement simple HSR frame
duplication for a lot of switches without dedicated HSR offload.
- Add uAPI defines for 1.6Tbps link modes.
Device drivers:
- Add Motorcomm YT921x gigabit Ethernet switch support.
- Add MUCSE driver for N500/N210 1GbE NIC series.
- Convert drivers to support dedicated ops for timestamping control,
and away from the direct IOCTL handling. While at it support GET
operations for PHY timestamping.
- Add (and convert most drivers to) a dedicated ethtool callback for
reading the Rx ring count.
- Significant refactoring efforts in the STMMAC driver, which
supports Synopsys turn-key MAC IP integrated into a ton of SoCs.
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support PPS in/out on all pins
- Intel (100G, ice, idpf):
- ice: implement standard ethtool and timestamping stats
- i40e: support setting the max number of MAC addresses per VF
- iavf: support RSS of GTP tunnels for 5G and LTE deployments
- nVidia/Mellanox (mlx5):
- reduce downtime on interface reconfiguration
- disable being an XDP redirect target by default (same as
other drivers) to avoid wasting resources if feature is
unused
- Meta (fbnic):
- add support for Linux-managed PCS on 25G, 50G, and 100G links
- Wangxun:
- support Rx descriptor merge, and Tx head writeback
- support Rx coalescing offload
- support 25G SPF and 40G QSFP modules
- Ethernet virtual:
- Google (gve):
- allow ethtool to configure rx_buf_len
- implement XDP HW RX Timestamping support for DQ descriptor
format
- Microsoft vNIC (mana):
- support HW link state events
- handle hardware recovery events when probing the device
- Ethernet NICs consumer, and embedded:
- usbnet: add support for Byte Queue Limits (BQL)
- AMD (amd-xgbe):
- add device selftests
- NXP (enetc):
- add i.MX94 support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- bcmasp: add support for PHY-based Wake-on-LAN
- Broadcom switches (b53):
- support port isolation
- support BCM5389/97/98 and BCM63XX ARL formats
- Lantiq/MaxLinear switches:
- support bridge FDB entries on the CPU port
- use regmap for register access
- allow user to enable/disable learning
- support Energy Efficient Ethernet
- support configuring RMII clock delays
- add tagging driver for MaxLinear GSW1xx switches
- Synopsys (stmmac):
- support using the HW clock in free running mode
- add Eswin EIC7700 support
- add Rockchip RK3506 support
- add Altera Agilex5 support
- Cadence (macb):
- cleanup and consolidate descriptor and DMA address handling
- add EyeQ5 support
- TI:
- icssg-prueth: support AF_XDP
- Airoha access points:
- add missing Ethernet stats and link state callback
- add AN7583 support
- support out-of-order Tx completion processing
- Power over Ethernet:
- pd692x0: preserve PSE configuration across reboots
- add support for TPS23881B devices
- Ethernet PHYs:
- Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
- Support 50G SerDes and 100G interfaces in Linux-managed PHYs
- micrel:
- support for non PTP SKUs of lan8814
- enable in-band auto-negotiation on lan8814
- realtek:
- cable testing support on RTL8224
- interrupt support on RTL8221B
- motorcomm: support for PHY LEDs on YT853
- microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
- mscc: support for PHY LED control
- CAN drivers:
- m_can: add support for optional reset and system wake up
- remove can_change_mtu() obsoleted by core handling
- mcp251xfd: support GPIO controller functionality
- Bluetooth:
- add initial support for PASTa
- WiFi:
- split ieee80211.h file, it's way too big
- improvements in VHT radiotap reporting, S1G, Channel Switch
Announcement handling, rate tracking in mesh networks
- improve multi-radio monitor mode support, and add a cfg80211
debugfs interface for it
- HT action frame handling on 6 GHz
- initial chanctx work towards NAN
- MU-MIMO sniffer improvements
- WiFi drivers:
- RealTek (rtw89):
- support USB devices RTL8852AU and RTL8852CU
- initial work for RTL8922DE
- improved injection support
- Intel:
- iwlwifi: new sniffer API support
- MediaTek (mt76):
- WED support for >32-bit DMA
- airoha NPU support
- regdomain improvements
- continued WiFi7/MLO work
- Qualcomm/Atheros:
- ath10k: factory test support
- ath11k: TX power insertion support
- ath12k: BSS color change support
- ath12k: statistics improvements
- brcmfmac: Acer A1 840 tablet quirk
- rtl8xxxu: 40 MHz connection fixes/support"
* tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1381 commits)
net: page_pool: sanitise allocation order
net: page pool: xa init with destroy on pp init
net/mlx5e: Support XDP target xmit with dummy program
net/mlx5e: Update XDP features in switch channels
selftests/tc-testing: Test CAKE scheduler when enqueue drops packets
net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop
wireguard: netlink: generate netlink code
wireguard: uapi: generate header with ynl-gen
wireguard: uapi: move flag enums
wireguard: uapi: move enum wg_cmd
wireguard: netlink: add YNL specification
selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py
selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py
selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py
selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py
selftests: drv-net: introduce Iperf3Runner for measurement use cases
selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS
net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive()
Documentation: net: dsa: mention simple HSR offload helpers
Documentation: net: dsa: mention availability of RedBox
...
|
||
|
Linus Torvalds
|
8449d3252c |
cgroup: Changes for v6.19
- Defer task cgroup unlink until after the dying task's final context switch so that controllers see the cgroup properly populated until the task is truly gone. - cpuset cleanups and simplifications. Enforce that domain isolated CPUs stay in root or isolated partitions and fail if isolated+nohz_full would leave no housekeeping CPU. Fix sched/deadline root domain handling during CPU hot-unplug and race for tasks in attaching cpusets. - Misc fixes including memory reclaim protection documentation and selftest KTAP conformance. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaS3pEQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGYbrAP9H0kVyWH5tK9VhjSZyqidic8NuvtmNOyhIRrg0 8S8K0wD/YG9xlh2JUyRmS4B23ggc59+9y5xM2/sctrho51Pvsgg= =0MB+ -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Defer task cgroup unlink until after the dying task's final context switch so that controllers see the cgroup properly populated until the task is truly gone - cpuset cleanups and simplifications. Enforce that domain isolated CPUs stay in root or isolated partitions and fail if isolated+nohz_full would leave no housekeeping CPU. Fix sched/deadline root domain handling during CPU hot-unplug and race for tasks in attaching cpusets - Misc fixes including memory reclaim protection documentation and selftest KTAP conformance * tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits) cpuset: Treat cpusets in attaching as populated sched/deadline: Walk up cpuset hierarchy to decide root domain when hot-unplug cgroup/cpuset: Introduce cpuset_cpus_allowed_locked() docs: cgroup: No special handling of unpopulated memcgs docs: cgroup: Note about sibling relative reclaim protection docs: cgroup: Explain reclaim protection target selftests/cgroup: conform test to KTAP format output cpuset: remove need_rebuild_sched_domains cpuset: remove global remote_children list cpuset: simplify node setting on error cgroup: include missing header for struct irq_work cgroup: Fix sleeping from invalid context warning on PREEMPT_RT cgroup/cpuset: Globally track isolated_cpus update cgroup/cpuset: Ensure domain isolated CPUs stay in root or isolated partition cgroup/cpuset: Move up prstate_housekeeping_conflict() helper cgroup/cpuset: Fail if isolated and nohz_full don't leave any housekeeping cgroup/cpuset: Rename update_unbound_workqueue_cpumask() to update_isolation_cpumasks() cgroup: Defer task cgroup unlink until after the task is done switching out cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free() cgroup: Rename cgroup lifecycle hooks to cgroup_task_*() ... |
||
|
Linus Torvalds
|
f96163865a |
This has been another busy cycle for documentation, with a lot of
build-system thrashing. That work should slow down from here on out.
- The various scripts and tools for documentation were spread out in
several directories; now they are (almost) all coalesced under
tools/docs/. The holdout is the kernel-doc script, which cannot be
easily moved without some further thought.
- As the amount of Python code increases, we are accumulating modules that
are imported by multiple programs. These modules have been pulled
together under tools/lib/python/ -- at least, for documentation-related
programs. There is other Python code in the tree that might eventually
want to move toward this organization.
- The Perl kernel-doc.pl script has been removed. It is no longer used by
default, and nobody has missed it, least of all anybody who actually had
to look at it.
- The docs build was controlled by a complex mess of makefilese that few
dared to touch. Mauro has moved that logic into a new program
(tools/docs/sphinx-build-wrapper) that, with any luck at all, will be far
easier to understand and maintain.
- The get_feat.pl program, used to access information under
Documentation/features/, has been rewritten in Python, bringing an end to
the use of Perl in the docs subsystem.
- The top-level README file has been reorganized into a more
reader-friendly presentation.
- A lot of Chinese translation additions
- Typo fixes and documentation updates as usual
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Merge tag 'docs-6.19' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"This has been another busy cycle for documentation, with a lot of
build-system thrashing. That work should slow down from here on out.
- The various scripts and tools for documentation were spread out in
several directories; now they are (almost) all coalesced under
tools/docs/. The holdout is the kernel-doc script, which cannot be
easily moved without some further thought.
- As the amount of Python code increases, we are accumulating modules
that are imported by multiple programs. These modules have been
pulled together under tools/lib/python/ -- at least, for
documentation-related programs. There is other Python code in the
tree that might eventually want to move toward this organization.
- The Perl kernel-doc.pl script has been removed. It is no longer
used by default, and nobody has missed it, least of all anybody who
actually had to look at it.
- The docs build was controlled by a complex mess of makefilese that
few dared to touch. Mauro has moved that logic into a new program
(tools/docs/sphinx-build-wrapper) that, with any luck at all, will
be far easier to understand and maintain.
- The get_feat.pl program, used to access information under
Documentation/features/, has been rewritten in Python, bringing an
end to the use of Perl in the docs subsystem.
- The top-level README file has been reorganized into a more
reader-friendly presentation.
- A lot of Chinese translation additions
- Typo fixes and documentation updates as usual"
* tag 'docs-6.19' of git://git.lwn.net/linux: (164 commits)
docs: makefile: move rustdoc check to the build wrapper
README: restructure with role-based documentation and guidelines
docs: kdoc: various fixes for grammar, spelling, punctuation
docs: kdoc_parser: use '@' for Excess enum value
docs: submitting-patches: Clarify that removal of Acks needs explanation too
docs: kdoc_parser: add data/function attributes to ignore
docs: MAINTAINERS: update Mauro's files/paths
docs/zh_CN: Add wd719x.rst translation
docs/zh_CN: Add libsas.rst translation
get_feat.pl: remove it, as it got replaced by get_feat.py
Documentation/sphinx/kernel_feat.py: use class directly
tools/docs/get_feat.py: convert get_feat.pl to Python
Documentation/admin-guide: fix typo and comment in cscope example
docs/zh_CN: Add data-integrity.rst translation
docs/zh_CN: Add blk-mq.rst translation
docs/zh_CN: Add block/index.rst translation
docs/zh_CN: Update the Chinese translation of kbuild.rst
docs: bring some order to our Python module hierarchy
docs: Move the python libraries to tools/lib/python
Documentation/kernel-parameters: Move the kernel build options
...
|
||
|
Linus Torvalds
|
c832183148 |
ipe/stable-6.19 PR 20251202
-----BEGIN PGP SIGNATURE----- iIcEABYIAC8WIQQzmBmZPBN6m/hUJmnyomI6a/yO7QUCaS+zQhEcd3VmYW5Aa2Vy bmVsLm9yZwAKCRDyomI6a/yO7TfdAP4ngYyNKMwefqmrwG7akL9sRCWEH4Y/ZM/Z ZwFw0waDkAEA5gV5LH6DJme9rBsXjC8wkOiiUOerqopIVKPMeYKCmAc= =sOI5 -----END PGP SIGNATURE----- Merge tag 'ipe-pr-20251202' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe Pull IPE udates from Fan Wu: "The primary change is the addition of support for the AT_EXECVE_CHECK flag. This allows interpreters to signal the kernel to perform IPE security checks on script files before execution, extending IPE enforcement to indirectly executed scripts. Update documentation for it, and also fix a comment" * tag 'ipe-pr-20251202' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe: ipe: Update documentation for script enforcement ipe: Add AT_EXECVE_CHECK support for script enforcement ipe: Drop a duplicated CONFIG_ prefix in the ifdeffery |
||
|
Linus Torvalds
|
204a920f28 |
Patches for 6.19
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||
|
Yanzhu Huang
|
d7ba853c0e |
ipe: Update documentation for script enforcement
This patch adds explanation of script enforcement mechanism in admin guide documentation. Describes how IPE supports integrity enforcement for indirectly executed scripts through the AT_EXECVE_CHECK flag, and how this differs from kernel enforcement for compiled executables. Signed-off-by: Yanzhu Huang <yanzhuhuang@linux.microsoft.com> Signed-off-by: Fan Wu <wufan@kernel.org> |
||
|
Linus Torvalds
|
619f4edc8d |
Thermal control updates for 6.19-rc1
- Add Nova Lake processor thermal device to the int340x
processor_thermal driver, add DLVR support for Nova Lake to it,
add Nova Lake support to the ACPI DPTF code, document thermal
throttling on Intel platforms, and update workload type hint
interface documentation (Srinivas Pandruvada)
- Remove int340x thermal scan handler from the ACPI DPTF code
because it turned out to be unnecessary (Slawomir Rosek)
- Clean up the Intel int340x thermal driver (Kaushlendra Kumar)
- Document the RZ/V2H TSU DT bindings (Ovidiu Panait)
- Document the Kaanapali Temperature Sensor (Manaf Meethalavalappu
Pallikunhi)
- Document R-Car Gen4 and RZ/G2 support in driver comment (Marek Vasut)
- Convert to DEFINE_SIMPLE_DEV_PM_OPS() in R-Car [Gen3] (Geert
Uytterhoeven)
- Fix format string bug in thermal-engine (Malaya Kumar Rout)
- Make ipq5018 tsens standalone compatible (George Moussalem)
- Add the QCS8300 compatible for QCom Tsens (Gaurav Kohli)
- Add support for the NXP i.MX91 thermal module, including the DT
bindings (Pengfei Li)
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Merge tag 'thermal-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These add Nova Lake processor support to the Intel thermal drivers and
DPTF code, update thermal control documentation, simplify the ACPI
DPTF code related to thermal control, add QCS8300 compatible to the
tsens thermal DT bindings, add DT bindings for NXP i.MX91 thermal
module and add support for it to the imx91 thermal driver, update a
few other thermal drivers and fix a format string issue in a thermal
utility:
- Add Nova Lake processor thermal device to the int340x
processor_thermal driver, add DLVR support for Nova Lake to it, add
Nova Lake support to the ACPI DPTF code, document thermal
throttling on Intel platforms, and update workload type hint
interface documentation (Srinivas Pandruvada)
- Remove int340x thermal scan handler from the ACPI DPTF code because
it turned out to be unnecessary (Slawomir Rosek)
- Clean up the Intel int340x thermal driver (Kaushlendra Kumar)
- Document the RZ/V2H TSU DT bindings (Ovidiu Panait)
- Document the Kaanapali Temperature Sensor (Manaf Meethalavalappu
Pallikunhi)
- Document R-Car Gen4 and RZ/G2 support in driver comment (Marek
Vasut)
- Convert to DEFINE_SIMPLE_DEV_PM_OPS() in R-Car [Gen3] (Geert
Uytterhoeven)
- Fix format string bug in thermal-engine (Malaya Kumar Rout)
- Make ipq5018 tsens standalone compatible (George Moussalem)
- Add the QCS8300 compatible for QCom Tsens (Gaurav Kohli)
- Add support for the NXP i.MX91 thermal module, including the DT
bindings (Pengfei Li)"
* tag 'thermal-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal/drivers/imx91: Add support for i.MX91 thermal monitoring unit
dt-bindings: thermal: fsl,imx91-tmu: add bindings for NXP i.MX91 thermal module
dt-bindings: thermal: tsens: Add QCS8300 compatible
dt-bindings: thermal: qcom-tsens: make ipq5018 tsens standalone compatible
tools/thermal/thermal-engine: Fix format string bug in thermal-engine
docs: driver-api/thermal/intel_dptf: Add new workload type hint
thermal/drivers/rcar_gen3: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
thermal/drivers/rcar: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
Documentation: thermal: Document thermal throttling on Intel platforms
ACPI: DPTF: Support Nova Lake
thermal: intel: int340x: Add DLVR support for Nova Lake
thermal: int340x: processor_thermal: Add Nova Lake processor thermal device
thermal: intel: int340x: Replace sprintf() with sysfs_emit()
thermal: intel: int340x: Use symbolic constant for UUID comparison
thermal/drivers/rcar_gen3: Document R-Car Gen4 and RZ/G2 support in driver comment
dt-bindings: thermal: qcom-tsens: document the Kaanapali Temperature Sensor
dt-bindings: thermal: r9a09g047-tsu: Document RZ/V2H TSU
ACPI: DPTF: Remove int340x thermal scan handler
thermal: intel: Select INT340X_THERMAL from INTEL_SOC_DTS_THERMAL
|
||
|
Linus Torvalds
|
d348c22394 |
Power management updates for 6.19-rc1
- Introduce and document a QoS limit on CPU exit latency during wakeup
from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on energy
model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the cpufreq
core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat Lake
processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate cpufreq
driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking in
it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi, Hal
Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in
generic PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power management
watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source from
the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out
of drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)
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Merge tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"There are quite a few interesting things here, including new hardware
support, new features, some bug fixes and documentation updates. In
addition, there are a usual bunch of minor fixes and cleanups all
over.
In the new hardware support category, there are intel_pstate and
intel_rapl driver updates to support new processors, Panther Lake,
Wildcat Lake, Noval Lake, and Diamond Rapids in the OOB mode, OPP and
bandwidth allocation support in the tegra186 cpufreq driver, and
JH7110S SOC support in dt-platdev cpufreq.
The new features are the PM QoS CPU latency limit for suspend-to-idle,
the netlink support for the energy model management, support for
terminating system suspend via a wakeup event during the sync of file
systems, configurable number of hibernation compression threads, the
runtime PM auto-cleanup macros, and the "poweroff" PM event that is
expected to be used during system shutdown.
Bugs are mostly fixed in cpuidle governors, but there are also fixes
elsewhere, like in the amd-pstate cpufreq driver.
Documentation updates include, but are not limited to, a new doc on
debugging shutdown hangs, cross-referencing fixes and cleanups in the
intel_pstate documentation, and updates of comments in the core
hibernation code.
Specifics:
- Introduce and document a QoS limit on CPU exit latency during
wakeup from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on
energy model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the
cpufreq core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat
Lake processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate
cpufreq driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking
in it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi,
Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in generic
PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power
management watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source
from the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael
Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out of
drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)"
* tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (96 commits)
PM / devfreq: Fix typo in DFSO_DOWNDIFFERENTIAL macro name
cpuidle: Warn instead of bailing out if target residency check fails
cpuidle: Update header inclusion
Documentation: power/cpuidle: Document the CPU system wakeup latency QoS
cpuidle: Respect the CPU system wakeup QoS limit for cpuidle
sched: idle: Respect the CPU system wakeup QoS limit for s2idle
pmdomain: Respect the CPU system wakeup QoS limit for cpuidle
pmdomain: Respect the CPU system wakeup QoS limit for s2idle
PM: QoS: Introduce a CPU system wakeup QoS limit
cpuidle: governors: teo: Add missing space to the description
PM: hibernate: Extra cleanup of comments in swap handling code
PM / devfreq: tegra30: use min to simplify actmon_cpu_to_emc_rate
PM / devfreq: hisi: Fix potential UAF in OPP handling
PM / devfreq: Move governor.h to a public header location
powercap: intel_rapl: Enable MSR-based RAPL PMU support
powercap: intel_rapl: Prepare read_raw() interface for atomic-context callers
cpufreq: qcom-nvmem: fix compilation warning for qcom_cpufreq_ipq806x_match_list
PM: sleep: Call pm_sleep_fs_sync() instead of ksys_sync_helper()
PM: sleep: Add support for wakeup during filesystem sync
cpufreq: ACPI: Replace udelay() with usleep_range()
...
|
||
|
Linus Torvalds
|
2ae20d6510 |
- Add support for AMD's Smart Data Cache Injection feature which allows
for direct insertion of data from I/O devices into the L3 cache, thus bypassing DRAM and saving its bandwidth; the resctrl side of the feature allows the size of the L3 used for data injection to be controlled - Add Intel Clearwater Forest to the list of CPUs which support Sub-NUMA clustering - Other fixes and cleanups -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmktpFQACgkQEsHwGGHe VUop4g/9GTb/5rcFMQzeGlG3USnJOqJ+SmiAalA9lm1c933en9tqUgL/K0C0xC6h yraB3ICuob1YayiZkBwKIOQiei9gmfhH/CGf5vLcZMM+D6fqvlk1D+C40SuFoDFV DOH3H2nYoJ3vbZRtRZsD3bv/djST/OVk28g7eY8OwpZIwN5VSFULJwjK1ePPy+nL l65s/yrgLY0oLDBCGxtJ9gVxjCBqAoqfbbwVbcJm5hXv+2sYk8BH6de/CU+0v/vo K6Qu4GbmWqDKYH9thjC4ZC/DPXjtoCxGkg/l1Af5T1PiZF0ZtgEZI6i9JTR33jYJ 7j6BpkCwPzY07MKj/Ub1RemlMfY4XMN/qssEfFmnwG+aMBtbojNAjdb00Pu9Ffn+ TKFKiZ6WBTcYhqPQsFVruwHh8wDbJp2/x/yBfjD4qovo1HuyCln4iGDmoFcU2wTD UlOXW89bxOT56A3FL77ElnOg9nRltvdKduOluGtkpSkmBbzmDfoXrhG2z9zuuAui FB6GT2c5MRVXEC4BY30xwQBG5MArVRMyz9uYDyXf9+KHhWVdmq9K0ZAkIaUmPCvy BvBXpRhfxm/dKJPhtSuUPhh5A+a87gqoiu1McaFoVGyjVJIJ5gflge8+/mLj1lQz kG56SnLOzdtcwKcmQ5ncv5EkrTBD1Ph12u1kcd+4IZwkpgGZteE= =o7Dg -----END PGP SIGNATURE----- Merge tag 'x86_cache_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 resource control updates from Borislav Petkov: - Add support for AMD's Smart Data Cache Injection feature which allows for direct insertion of data from I/O devices into the L3 cache, thus bypassing DRAM and saving its bandwidth; the resctrl side of the feature allows the size of the L3 used for data injection to be controlled - Add Intel Clearwater Forest to the list of CPUs which support Sub-NUMA clustering - Other fixes and cleanups * tag 'x86_cache_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: fs/resctrl: Update bit_usage to reflect io_alloc fs/resctrl: Introduce interface to modify io_alloc capacity bitmasks fs/resctrl: Modify struct rdt_parse_data to pass mode and CLOSID fs/resctrl: Introduce interface to display io_alloc CBMs fs/resctrl: Add user interface to enable/disable io_alloc feature fs/resctrl: Introduce interface to display "io_alloc" support x86,fs/resctrl: Implement "io_alloc" enable/disable handlers x86,fs/resctrl: Detect io_alloc feature x86/resctrl: Add SDCIAE feature in the command line options x86/cpufeatures: Add support for L3 Smart Data Cache Injection Allocation Enforcement fs/resctrl: Consider sparse masks when initializing new group's allocation x86/resctrl: Support Sub-NUMA Cluster (SNC) mode on Clearwater Forest |
||
|
Linus Torvalds
|
49219bba01 |
- imh_edac: Add a new EDAC driver for Intel Diamond Rapids and
future incarnations of this memory controllers architecture
- amd64_edac: Remove the legacy csrow sysfs interface which has been
deprecated and unused (we assume) for at least a decade
- Add the capability to fallback to BIOS-provided address translation
functionality (ACPI PRM) which can be used on systems unsupported by
the current AMD address translation library
- The usual fixes, fixlets, cleanups and improvements all over the place
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Merge tag 'edac_updates_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- imh_edac: Add a new EDAC driver for Intel Diamond Rapids and future
incarnations of this memory controllers architecture
- amd64_edac: Remove the legacy csrow sysfs interface which has been
deprecated and unused (we assume) for at least a decade
- Add the capability to fallback to BIOS-provided address translation
functionality (ACPI PRM) which can be used on systems unsupported by
the current AMD address translation library
- The usual fixes, fixlets, cleanups and improvements all over the
place
* tag 'edac_updates_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
RAS/AMD/ATL: Replace bitwise_xor_bits() with hweight16()
EDAC/igen6: Fix error handling in igen6_edac driver
EDAC/imh: Setup 'imh_test' debugfs testing node
EDAC/{skx_comm,imh}: Detect 2-level memory configuration
EDAC/skx_common: Extend the maximum number of DRAM chip row bits
EDAC/{skx_common,imh}: Add EDAC driver for Intel Diamond Rapids servers
EDAC/skx_common: Prepare for skx_set_hi_lo()
EDAC/skx_common: Prepare for skx_get_edac_list()
EDAC/{skx_common,skx,i10nm}: Make skx_register_mci() independent of pci_dev
EDAC/ghes: Replace deprecated strcpy() in ghes_edac_report_mem_error()
EDAC/ie31200: Fix error handling in ie31200_register_mci
RAS/CEC: Replace use of system_wq with system_percpu_wq
EDAC: Remove the legacy EDAC sysfs interface
EDAC/amd64: Remove NUM_CONTROLLERS macro
EDAC/amd64: Generate ctl_name string at runtime
RAS/AMD/ATL: Require PRM support for future systems
ACPI: PRM: Add acpi_prm_handler_available()
RAS/AMD/ATL: Return error codes from helper functions
|
||
|
Rafael J. Wysocki
|
7cede21e9f |
Merge branches 'pm-qos' and 'pm-tools'
Merge PM QoS updates and a cpupower utility update for 6.19-rc1: - Introduce and document a QoS limit on CPU exit latency during wakeup from suspend-to-idle (Ulf Hansson) - Add support for building libcpupower statically (Zuo An) * pm-qos: Documentation: power/cpuidle: Document the CPU system wakeup latency QoS cpuidle: Respect the CPU system wakeup QoS limit for cpuidle sched: idle: Respect the CPU system wakeup QoS limit for s2idle pmdomain: Respect the CPU system wakeup QoS limit for cpuidle pmdomain: Respect the CPU system wakeup QoS limit for s2idle PM: QoS: Introduce a CPU system wakeup QoS limit * pm-tools: tools/power/cpupower: Support building libcpupower statically |
||
|
Rafael J. Wysocki
|
1fe2523713 |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.19-rc1: - Add OPP and bandwidth support for Tegra186 (Aaron Kling) - Optimizations for parameter array handling in the amd-pstate cpufreq driver (Mario Limonciello) - Fix for mode changes with offline CPUs in the amd-pstate cpufreq driver (Gautham Shenoy) - Preserve freq_table_sorted across suspend/hibernate in the cpufreq core (Zihuan Zhang) - Adjust energy model rules for Intel hybrid platforms in the intel_pstate cpufreq driver and improve printing of debug messages in it (Rafael Wysocki) - Replace deprecated strcpy() in cpufreq_unregister_governor() (Thorsten Blum) - Fix duplicate hyperlink target errors in the intel_pstate cpufreq driver documentation and use :ref: directive for internal linking in it (Swaraj Gaikwad, Bagas Sanjaya) - Add Diamond Rapids OOB mode support to the intel_pstate cpufreq driver (Kuppuswamy Sathyanarayanan) - Use mutex guard for driver locking in the intel_pstate driver and eliminate some code duplication from it (Rafael Wysocki) - Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra Kumar) - Minor improvements to various cpufreq drivers (Christian Marangi, Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu) * pm-cpufreq: (27 commits) cpufreq: qcom-nvmem: fix compilation warning for qcom_cpufreq_ipq806x_match_list cpufreq: ACPI: Replace udelay() with usleep_range() cpufreq: intel_pstate: Eliminate some code duplication cpufreq: intel_pstate: Use mutex guard for driver locking cpufreq/amd-pstate: Call cppc_set_auto_sel() only for online CPUs cpufreq/amd-pstate: Add static asserts for EPP indices cpufreq/amd-pstate: Fix some whitespace issues cpufreq/amd-pstate: Adjust return values in amd_pstate_update_status() cpufreq/amd-pstate: Make amd_pstate_get_mode_string() never return NULL cpufreq/amd-pstate: Drop NULL value from amd_pstate_mode_string cpufreq/amd-pstate: Use sysfs_match_string() for epp cpufreq: tegra194: add WQ_PERCPU to alloc_workqueue users cpufreq: qcom-nvmem: add compatible fallback for ipq806x for no SMEM Documentation: intel-pstate: Use :ref: directive for internal linking cpufreq: intel_pstate: Add Diamond Rapids OOB mode support Documentation: intel_pstate: fix duplicate hyperlink target errors cpufreq: CPPC: Don't warn if FIE init fails to read counters cpufreq: nforce2: fix reference count leak in nforce2 cpufreq: tegra186: add OPP support and set bandwidth cpufreq: dt-platdev: Add JH7110S SOC to the allowlist ... |
||
|
Aaron Thompson
|
f278809475 |
debugfs: Remove broken no-mount mode
debugfs access modes were added in Linux 5.10 (Dec 2020) [1], but the no-mount mode has behaved effectively the same as the off mode since Linux 5.12 (Apr 2021) [2]. The only difference is the specific error code returned by the debugfs_create_* functions, which is -ENOENT in no-mount mode and -EPERM in off mode. Given that no-mount hasn't worked for several years with no complaints, just remove it. [1] |
||
|
Ulf Hansson
|
c19dfb267c |
Documentation: power/cpuidle: Document the CPU system wakeup latency QoS
Let's document how the new CPU system wakeup latency QoS limit can be used from user space, along with how the constraint is taken into account for s2idle and cpuidle. Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-7-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Richard Weinberger
|
84a8d467cc |
pagemap: update BUDDY flag documentation
Since v4.6 the BUDDY flag is set for _all_ pages in the block
and no longer just for the first one.
This change was introduced by:
commit
|
||
|
Babu Moger
|
4d4840b125 |
x86/resctrl: Add SDCIAE feature in the command line options
Add a kernel command-line parameter to enable or disable the exposure of the L3 Smart Data Cache Injection Allocation Enforcement (SDCIAE) hardware feature to resctrl. Signed-off-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://patch.msgid.link/c623edf7cb369ba9da966de47d9f1b666778a40e.1762995456.git.babu.moger@amd.com |
||
|
Jiakai Xu
|
55fb2d5726 |
Documentation/admin-guide: fix typo and comment in cscope example
This patch updates the Linux documentation for cscope, fixing two issues:
1. Corrects the typo in the command line:
c"scope -d -p10 -> cscope -d -p10
2. Fixes the related documentation comment for clarity and correctness:
cscope by default cscope.out database.
->
cscope by default uses the cscope.out database.
Signed-off-by: Jiakai Xu <jiakaiPeanut@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251119065727.3500015-1-jiakaiPeanut@gmail.com>
|
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|
Feng Tang
|
03ef32d665 |
sys_info: add a default kernel sys_info mask
Which serves as a global default sys_info mask. When users want the same system information for many error cases (panic, hung, lockup ...), they can chose to set this global knob only once, while not setting up each individual sys_info knobs. This just adds a 'lazy' option, and doesn't change existing kernel behavior as the mask is 0 by default. Link: https://lkml.kernel.org/r/20251113111039.22701-5-feng.tang@linux.alibaba.com Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <ioworker0@gmail.com> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Feng Tang
|
a9af76a787 |
watchdog: add sys_info sysctls to dump sys info on system lockup
When soft/hard lockup happens, developers may need different kinds of system information (call-stacks, memory info, locks, etc.) to help debugging. Add 'softlockup_sys_info' and 'hardlockup_sys_info' sysctl knobs to take human readable string like "tasks,mem,timers,locks,ftrace,...", and when system lockup happens, all requested information will be printed out. (refer kernel/sys_info.c for more details). Link: https://lkml.kernel.org/r/20251113111039.22701-4-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <ioworker0@gmail.com> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Feng Tang
|
8b2b9b4f6f |
hung_task: add hung_task_sys_info sysctl to dump sys info on task-hung
When task-hung happens, developers may need different kinds of system information (call-stacks, memory info, locks, etc.) to help debugging. Add 'hung_task_sys_info' sysctl knob to take human readable string like "tasks,mem,timers,locks,ftrace,...", and when task-hung happens, all requested information will be dumped. (refer kernel/sys_info.c for more details). Meanwhile, the newly introduced sys_info() call is used to unify some existing info-dumping knobs. [feng.tang@linux.alibaba.com: maintain consistecy established behavior, per Lance and Petr] Link: https://lkml.kernel.org/r/aRncJo1mA5Zk77Hr@U-2FWC9VHC-2323.local Link: https://lkml.kernel.org/r/20251113111039.22701-3-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Lance Yang <lance.yang@linux.dev> Cc: Jonathan Corbet <corbet@lwn.net> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Feng Tang
|
5f264c00b6 |
docs: panic: correct some sys_ifo names in sysctl doc
Patch series "Enable hung_task and lockup cases to dump system info on
demand", v2.
When working on kernel stability issues: panic, task-hung and soft/hard
lockup are frequently met. And to debug them, user may need lots of
system information at that time, like task call stacks, lock info, memory
info, ftrace dump, etc.
panic case already uses sys_info() for this purpose, and has a
'panic_sys_info' sysctl(also support cmdline setup) interface to take
human readable string like "tasks,mem,timers,locks,ftrace,..." to control
what kinds of information is needed. Which is also helpful to debug
task-hung and lockup cases.
So this patchset introduces the similar sys_info sysctl interface for
task-hung and lockup cases.
his is mainly for debugging and the info dumping could be intrusive, like
dumping call stack for all tasks when system has huge number of tasks,
similarly for ftrace dump (we may add tracing_stop() and tracing_start()
around it)
Locally these have been used in our bug chasing for stability issues and
were helpful.
As Andrew suggested, add a configurable global 'kernel_sys_info' knob.
When error scenarios like panic/hung-task/lockup etc doesn't setup their
own sys_info knob and calls sys_info() with parameter "0", this global
knob will take effect. It could be used for other kernel cases like OOM,
which may not need one dedicated sys_info knob.
This patch (of 4):
Some sys_info names wered forgotten to change in patch iterations, while
the right names are defined in kernel/sys_info.c.
Link: https://lkml.kernel.org/r/20251113111039.22701-1-feng.tang@linux.alibaba.com
Link: https://lkml.kernel.org/r/20251113111039.22701-2-feng.tang@linux.alibaba.com
Fixes:
|
||
|
Shubhankar Mishra
|
ae97648e14 |
dm verity fec: Expose corrected block count via status
Enhance visibility into dm-verity Forward Error Correction (FEC) activity. While FEC can correct on-disk corruptions, the number of successful correction events is not readily exposed through a standard interface. This change integrates FEC statistics into the verity target's .status handler for STATUSTYPE_INFO. The info output now includes count of corrected block by FEC. The counter is a per-device instance atomic64_t, maintained within the struct dm_verity_fec, tracking blocks successfully repaired by FEC on this specific device instance since it was created. This approach aligns with the standard Device Mapper mechanism for targets to report runtime information, as used by other targets like dm-integrity. This patch also updates Documentation/admin-guide/device-mapper/verity.rst to reflect the new status information. Tested: Induced single-bit errors on a block device protected by dm-verity with FEC on android phone. Confirmed 'dmctl status <device>' on Android reports an incrementing 'fec_corrected_blocks' count after the corrupted blocks were accessed. Signed-off-by: Shubhankar Mishra <shubhankarm@google.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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|
Borislav Petkov (AMD)
|
f690e07859 |
Documentation/kernel-parameters: Move the kernel build options
Move the kernel build options abbreviations to the .txt file so that they are together instead of one having to go hunt them in the .rst file. Tweak the formatting so that the inclusion of kernel-parameters.txt still keeps the whole thing somewhat presentable in the html output too. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20251112114641.8230-1-bp@kernel.org> |
||
|
Xie Yuanbin
|
46a47693e1 |
Documentation/kernel-parameters: fix typo in retbleed= kernel parameter description
Fixes a typo in the retbleed= parameter description, changing
"migitation" to "mitigation".
Fixes:
|
||
|
Ritesh Harjani (IBM)
|
5b3a426aff |
powerpc/64s/slb: Add no_slb_preload early cmdline param
no_slb_preload cmdline can come useful in quickly disabling and/or testing the performance impact of userspace slb preloads. Recently there was a slb multi-hit issue due to slb preload cache which was very difficult to triage. This cmdline option allows to quickly disable preloads and verify if the issue exists in preload cache or somewhere else. This can also be a useful option to see the effect of slb preloads for any application workload e.g. number of slb faults with or w/o slb preloads. with slb_preload: slb_faults (minimal initrd boot): 15 slb_faults (full systemd boot): 300 with no_slb_preload: slb_faults (minimal initrd boot): 33 slb_faults (full systemd boot): 138180 Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/de484b55c45d831bc2db63945f455153c89a9a65.1761834163.git.ritesh.list@gmail.com |
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Damien Le Moal
|
ade260ca85 |
Documentation: admin-guide: blockdev: update zloop parameters
In Documentation/admin-guide/blockdev/zoned_loop.rst, add the description of the zone_append and ordered_zone_append configuration arguments of zloop "add" command (device creation). Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Baoquan He
|
8e689f8ea4 |
mm/swap: do not choose swap device according to numa node
Patch series "mm/swapfile.c: select swap devices of default priority round robin", v5. Currently, on system with multiple swap devices, swap allocation will select one swap device according to priority. The swap device with the highest priority will be chosen to allocate firstly. People can specify a priority from 0 to 32767 when swapon a swap device, or the system will set it from -2 then downwards by default. Meanwhile, on NUMA system, the swap device with node_id will be considered first on that NUMA node of the node_id. In the current code, an array of plist, swap_avail_heads[nid], is used to organize swap devices on each NUMA node. For each NUMA node, there is a plist organizing all swap devices. The 'prio' value in the plist is the negated value of the device's priority due to plist being sorted from low to high. The swap device owning one node_id will be promoted to the front position on that NUMA node, then other swap devices are put in order of their default priority. E.g I got a system with 8 NUMA nodes, and I setup 4 zram partition as swap devices. Current behaviour: their priorities will be(note that -1 is skipped): NAME TYPE SIZE USED PRIO /dev/zram0 partition 16G 0B -2 /dev/zram1 partition 16G 0B -3 /dev/zram2 partition 16G 0B -4 /dev/zram3 partition 16G 0B -5 And their positions in the 8 swap_avail_lists[nid] will be: swap_avail_lists[0]: /* node 0's available swap device list */ zram0 -> zram1 -> zram2 -> zram3 prio:1 prio:3 prio:4 prio:5 swap_avali_lists[1]: /* node 1's available swap device list */ zram1 -> zram0 -> zram2 -> zram3 prio:1 prio:2 prio:4 prio:5 swap_avail_lists[2]: /* node 2's available swap device list */ zram2 -> zram0 -> zram1 -> zram3 prio:1 prio:2 prio:3 prio:5 swap_avail_lists[3]: /* node 3's available swap device list */ zram3 -> zram0 -> zram1 -> zram2 prio:1 prio:2 prio:3 prio:4 swap_avail_lists[4-7]: /* node 4,5,6,7's available swap device list */ zram0 -> zram1 -> zram2 -> zram3 prio:2 prio:3 prio:4 prio:5 The adjustment for swap device with node_id intended to decrease the pressure of lock contention for one swap device by taking different swap device on different node. The adjustment was introduced in commit |
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SeongJae Park
|
e06469cdf1 |
Docs/admin-guide/mm/damon/usage: document obsolete_target file
Document the newly added obsolete_target DAMON sysfs file. Link: https://lkml.kernel.org/r/20251023012535.69625-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Reviewed-by: Bijan Tabatabai <bijan311@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dmitry Ilvokhin
|
e97d7c5165 |
mm: shmem/tmpfs hugepage defaults config choice
Allow to override defaults for shemem and tmpfs at config time. This is consistent with how transparent hugepages can be configured. Same results can be achieved with the existing 'transparent_hugepage_shmem' and 'transparent_hugepage_tmpfs' settings in the kernel command line, but it is more convenient to define basic settings at config time instead of changing kernel command line later. Defaults for shmem and tmpfs were not changed. They are remained the same as before: 'never' for both cases. Options 'deny' and 'force' are omitted intentionally since these are special values and supposed to be used for emergencies or testing and are not expected to be permanent ones. Primary motivation for adding config option is to enable policy enforcement at build time. In large-scale production environments (Meta's for example), the kernel configuration is often maintained centrally close to the kernel code itself and owned by the kernel engineers, while boot parameters are managed independently (e.g. by provisioning systems). In such setups, the kernel build defines the supported and expected behavior in a single place, but there is no reliable or uniform control over the kernel command line options. A build-time default allows kernel integrators to enforce a predictable hugepage policy for shmem/tmpfs on a base layer, ensuring reproducible behavior and avoiding configuration drift caused by possible boot-time differences. In short, primary benefit is mostly operational: it provides a way to codify preferred policy in the kernel configuration, which is versioned, reviewed, and tested as part of the kernel build process, rather than depending on potentially variable boot parameters. [d@ilvokhin.com: v2] Link: https://lkml.kernel.org/r/aQECPpjd-fU_TC79@shell.ilvokhin.com Link: https://lkml.kernel.org/r/aPpv8sAa2sYgNu3L@shell.ilvokhin.com Signed-off-by: Dmitry Ilvokhin <d@ilvokhin.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Acked-by: Kiryl Shutsemau <kas@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
f46dbea0d9 |
Docs/admin-guide/mm/damon/stat: document negative idle time
Commit
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SeongJae Park
|
da8644a476 |
Docs/admin-guide/mm/damon/stat: document aggr_interval_us parameter
Commit
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SeongJae Park
|
448666e418 |
Docs/admin-guide/mm/damon/lru_sort: document addr_unit parameter
Commit
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SeongJae Park
|
bb01656e00 |
Docs/admin-guide/mm/damon/reclaim: document addr_unit parameter
Commit
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SeongJae Park
|
29221406f0 |
Docs/admin-guide/mm/damon/usage: document empty target regions commit behavior
Committing a monitoring target with empty target regions is for keeping
the current monitoring results. This behavior was introduced by commit
|
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SeongJae Park
|
a01386c16d |
Docs/admin-guide/mm/damon/stat: fix a typo: s/sampling events/sampling interval/
It is a contextual typo. Fix it. Link: https://lkml.kernel.org/r/20251026182216.118200-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
87b8351580 |
Docs/admin-guide/mm/damon/usage: document DAMOS quota goal path file
A new DAMON sysfs interface file, namely 'path' has been added under DAMOS
quota goal directory, for specifying the cgroup for
DAMOS_QUOTA_NODE_MEMCG_{USED,FREE}_BP metrics. Document it on the usage
document.
Link: https://lkml.kernel.org/r/20251017212706.183502-10-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Shakeel Butt
|
d929525c2e |
memcg: net: track network throttling due to memcg memory pressure
The kernel can throttle network sockets if the memory cgroup associated with the corresponding socket is under memory pressure. The throttling actions include clamping the transmit window, failing to expand receive or send buffers, aggressively prune out-of-order receive queue, FIN deferred to a retransmitted packet and more. Let's add memcg metric to track such throttling actions. At the moment memcg memory pressure is defined through vmpressure and in future it may be defined using PSI or we may add more flexible way for the users to define memory pressure, maybe through ebpf. However the potential throttling actions will remain the same, so this newly introduced metric will continue to track throttling actions irrespective of how memcg memory pressure is defined. Link: https://lkml.kernel.org/r/20251016161035.86161-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Daniel Sedlak <daniel.sedlak@cdn77.com> Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kacinski <kuba@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Neal Cardwell <ncardwell@google.com> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Simon Horman <horms@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
0fdaa13ee9 |
Docs/admin-guide/mm/zswap: s/red-black tree/xarray/
The change from commit
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Michael Riesch
|
1c5e4cf1d5 |
Documentation: admin-guide: media: add rockchip camera interface
Add a document that describes the different variants of the Rockchip Camera Interface (CIF), their hardware layout, as well as their representation in the media controller centric rkcif device driver, which is located under drivers/media/platform/rockchip/rkcif. Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Michael Riesch <michael.riesch@collabora.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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Michal Koutný
|
a0131c3927 |
docs: cgroup: No special handling of unpopulated memcgs
The current kernel doesn't handle unpopulated cgroups any special
regarding reclaim protection. Furthermore, this wasn't a case even when
this was introduced in
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Michal Koutný
|
3755c11679 |
docs: cgroup: Note about sibling relative reclaim protection
Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Michal Koutný
|
e27179958c |
docs: cgroup: Explain reclaim protection target
The protection target is necessary to understand how effective reclaim protection applies in the hierarchy. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Srinivas Pandruvada
|
3402bc010d |
Documentation: thermal: Document thermal throttling on Intel platforms
Add documentation for Intel thermal throttling reporting events. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Tested-by: Randy Dunlap <rdunlap@infradead.org> [ rjw: Subject adjustment, file name change, minor edits ] Link: https://patch.msgid.link/20251113212104.221632-1-srinivas.pandruvada@linux.intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Daniel Scally
|
87b214ddfe |
Documentation: media: mali-c55: Document the mali-c55 parameter setting
Document the mali-c55 parameter setting by expanding the relevant pages in both admin-guide/ and userspace-api/. Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Nayden Kanchev <nayden.kanchev@arm.com> Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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Daniel Scally
|
b35d9f3e30 |
Documentation: media: mali-c55: Add Statistics documentation
Add documentation explaining the ability to capture statistics from the mali-c55 driver's new V4L2 device, as well as the various tap points from which those statistics can be drawn in the ISP's processing flow. Additionally add a page detailing the new V4L2 meta format for the mali-c55 statistics. Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Nayden Kanchev <nayden.kanchev@arm.com> Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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Daniel Scally
|
dfb999e705 |
media: Documentation: Add Mali-C55 ISP Documentation
Add a documentation page for the mali-c55 driver, which gives a brief overview of the hardware and explains how to use the driver's capture devices and the crop/scaler functions. Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Nayden Kanchev <nayden.kanchev@arm.com> Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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Coly Li
|
7bf90cd740 |
bcache: remove discard sysfs interface document
This patch removes documents of bcache discard sysfs interface, it drops discard related sections from, - Documentation/ABI/testing/sysfs-block-bcache - Documentation/admin-guide/bcache.rst Signed-off-by: Coly Li <colyli@fnnas.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Ye Bin
|
6c2e6e2c1a |
dynamic_debug: add support for print stack
In practical problem diagnosis, especially during the boot phase, it is often desirable to know the call sequence. However, currently, apart from adding print statements and recompiling the kernel, there seems to be no good alternative. If dynamic_debug supported printing the call stack, it would be very helpful for diagnosing issues. This patch add support '+d' for dump stack. Link: https://lkml.kernel.org/r/20251025080003.312536-1-yebin@huaweicloud.com Signed-off-by: Ye Bin <yebin10@huawei.com> Cc: Jason Baron <jbaron@akamai.com> Cc: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li RongQing
|
9544f9e694 |
hung_task: panic when there are more than N hung tasks at the same time
The hung_task_panic sysctl is currently a blunt instrument: it's all or nothing. Panicking on a single hung task can be an overreaction to a transient glitch. A more reliable indicator of a systemic problem is when multiple tasks hang simultaneously. Extend hung_task_panic to accept an integer threshold, allowing the kernel to panic only when N hung tasks are detected in a single scan. This provides finer control to distinguish between isolated incidents and system-wide failures. The accepted values are: - 0: Don't panic (unchanged) - 1: Panic on the first hung task (unchanged) - N > 1: Panic after N hung tasks are detected in a single scan The original behavior is preserved for values 0 and 1, maintaining full backward compatibility. [lance.yang@linux.dev: new changelog] Link: https://lkml.kernel.org/r/20251015063615.2632-1-lirongqing@baidu.com Signed-off-by: Li RongQing <lirongqing@baidu.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Lance Yang <lance.yang@linux.dev> Tested-by: Lance Yang <lance.yang@linux.dev> Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au> [aspeed_g5_defconfig] Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Hildenbrand <david@redhat.com> Cc: Florian Wesphal <fw@strlen.de> Cc: Jakub Kacinski <kuba@kernel.org> Cc: Jason A. Donenfeld <jason@zx2c4.com> Cc: Joel Granados <joel.granados@kernel.org> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <kees@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Phil Auld <pauld@redhat.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Shuah Khan <shuah@kernel.org> Cc: Simon Horman <horms@kernel.org> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sourabh Jain
|
b4a96ab50f |
powerpc/kdump: Add support for crashkernel CMA reservation
Commit |
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Li Nan
|
62ed1b5822 |
md: allow configuring logical block size
Previously, raid array used the maximum logical block size (LBS) of all member disks. Adding a larger LBS disk at runtime could unexpectedly increase RAID's LBS, risking corruption of existing partitions. This can be reproduced by: ``` # LBS of sd[de] is 512 bytes, sdf is 4096 bytes. mdadm -CRq /dev/md0 -l1 -n3 /dev/sd[de] missing --assume-clean # LBS is 512 cat /sys/block/md0/queue/logical_block_size # create partition md0p1 parted -s /dev/md0 mklabel gpt mkpart primary 1MiB 100% lsblk | grep md0p1 # LBS becomes 4096 after adding sdf mdadm --add -q /dev/md0 /dev/sdf cat /sys/block/md0/queue/logical_block_size # partition lost partprobe /dev/md0 lsblk | grep md0p1 ``` Simply restricting larger-LBS disks is inflexible. In some scenarios, only disks with 512 bytes LBS are available currently, but later, disks with 4KB LBS may be added to the array. Making LBS configurable is the best way to solve this scenario. After this patch, the raid will: - store LBS in disk metadata - add a read-write sysfs 'mdX/logical_block_size' Future mdadm should support setting LBS via metadata field during RAID creation and the new sysfs. Though the kernel allows runtime LBS changes, users should avoid modifying it after creating partitions or filesystems to prevent compatibility issues. Only 1.x metadata supports configurable LBS. 0.90 metadata inits all fields to default values at auto-detect. Supporting 0.90 would require more extensive changes and no such use case has been observed. Note that many RAID paths rely on PAGE_SIZE alignment, including for metadata I/O. A larger LBS than PAGE_SIZE will result in metadata read/write failures. So this config should be prevented. Link: https://lore.kernel.org/linux-raid/20251103125757.1405796-6-linan666@huaweicloud.com Signed-off-by: Li Nan <linan122@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> Signed-off-by: Yu Kuai <yukuai@fnnas.com> |
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|
pierwill
|
e1cf4aac38 |
docs: Fix missing word in spectre.rst
Corrects a missing word in the hardware vulnerability docs. Signed-off-by: Will Pierce <pierwill@protonmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <Ru-d3ltJIyY4Oc6tzHwpSiDeFwSLHEzd7Utcr6iobgIy1B8wLRI4f6JiCb0a9n-0-r19d0dyLL3yS8KWVcyHfpkyDErWXYTkI3AJfUPTNCc=@protonmail.com> |
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Armin Wolf
|
cec551ec79
|
Documentation: laptops: Add documentation for uniwill laptops
Add documentation for admins regarding Uniwill laptops. This should help them to setup the uniwill-laptop driver, which sadly cannot be loaded automatically. Reported-by: cyear <chumuzero@gmail.com> Closes: https://github.com/lm-sensors/lm-sensors/issues/508 Closes: https://github.com/Wer-Wolf/uniwill-laptop/issues/3 Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://patch.msgid.link/20251102172942.17879-3-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Eric Dumazet
|
b61785852e |
net: increase skb_defer_max default to 128
skb_defer_max value is very conservative, and can be increased to avoid too many calls to kick_defer_list_purge(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Link: https://patch.msgid.link/20251106202935.1776179-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Dr. David Alan Gilbert
|
617347e716 |
mfd: wl1273-core: Remove the header
The wl1273 FM radio is on Arnd's unused driver list: https://lore.kernel.org/lkml/a15bb180-401d-49ad-a212-0c81d613fbc8@app.fastmail.com/ Other patches have removed the core, the ASoC code and the Radio code. With all those in, remove the header. Also, tidy the ref in the docs. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee@kernel.org> |
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Avadhut Naik
|
8616025ae6 |
EDAC: Remove the legacy EDAC sysfs interface
Commit
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Thomas Gleixner
|
9c37cb6e80 |
rseq: Provide static branch for runtime debugging
Config based debug is rarely turned on and is not available easily when things go wrong. Provide a static branch to allow permanent integration of debug mechanisms along with the usual toggles in Kconfig, command line and debugfs. Requested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://patch.msgid.link/20251027084307.089270547@linutronix.de |
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Bagas Sanjaya
|
4ab25c9214 |
Documentation: intel-pstate: Use :ref: directive for internal linking
intel_pstate docs uses standard reST construct (`Section title`_) for
cross-referencing sections (internal linking), rather than for external
links. Incorrect cross-references are not caught when these are written
in that syntax, however (fortunately docutils 0.22 raise duplicate
target warnings that get fixed in
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Alan Borzeszkowski
|
d776e805f1 |
thunderbolt: Update NVM firmware upgrade documentation
Update guide about firmware upgrade of Thunderbolt devices, replacing outdated recommendations with the use of modern "fwupd" tool. Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> |
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Xueqin Luo
|
090bf5a0f4 |
PM: hibernate: make compression threads configurable
The number of compression/decompression threads has a direct impact on
hibernate image generation and resume latency. Using more threads can
reduce overall resume time, but on systems with fewer CPU cores it may
also introduce contention and reduce efficiency.
Performance was evaluated on an 8-core ARM system, averaged over 10 runs:
Threads Hibernate(s) Resume(s)
--------------------------------
3 12.14 18.86
4 12.28 17.48
5 11.09 16.77
6 11.08 16.44
With 5–6 threads, resume latency improves by approximately 12% compared
to the default 3-thread configuration, with negligible impact on
hibernate time.
Introduce a new kernel parameter `hibernate_compression_threads=` that
allows users and integrators to tune the number of
compression/decompression threads at boot. This provides a way to
balance performance and CPU utilization across a wide range of hardware
without recompiling the kernel.
Signed-off-by: Xueqin Luo <luoxueqin@kylinos.cn>
Link: https://patch.msgid.link/f24b3ca6416e230a515a154ed4c121d72a7e05a6.1761046167.git.luoxueqin@kylinos.cn
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Brendan Jackman
|
b4ff1f611b |
Documentation: fix reference to PR_SPEC_L1D_FLUSH
PR_SET_L1D_FLUSH does not exist. Signed-off-by: Brendan Jackman <jackmanb@google.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20251015-l1d-flush-doc-v1-2-f8cefea3f2f2@google.com> |
||
|
Swaraj Gaikwad
|
cb908f8b0a |
Documentation: intel_pstate: fix duplicate hyperlink target errors
Fix reST warnings in
Documentation/admin-guide/pm/intel_pstate.rst caused by missing explicit
hyperlink labels for section titles.
Before this change, the following errors were printed during
`make htmldocs`:
Documentation/admin-guide/pm/intel_pstate.rst:401:
ERROR: Indirect hyperlink target (id="id6") refers to target
"passive mode", which is a duplicate, and cannot be used as a
unique reference.
Documentation/admin-guide/pm/intel_pstate.rst:517:
ERROR: Indirect hyperlink target (id="id9") refers to target
"active mode", which is a duplicate, and cannot be used as a
unique reference.
Documentation/admin-guide/pm/intel_pstate.rst:611:
ERROR: Indirect hyperlink target (id="id15") refers to target
"global attributes", which is a duplicate, and cannot be used as
a unique reference.
ERROR: Duplicate target name, cannot be used as a unique reference:
"passive mode", "active mode", "global attributes".
These errors occurred because the sections "Active Mode",
"Active Mode With HWP", "Passive Mode", and "Global Attributes"
did not define explicit hyperlink labels. As a result, Sphinx
auto-generated duplicate anchors when the same titles appeared
multiple times within the document.
Because of this, the generated HTML documentation contained
broken references such as:
`active mode <Active Mode_>`_
`passive mode <Passive Mode_>`_
`global attributes <Global Attributes_>`_
This patch adds explicit hyperlink labels for the affected sections,
ensuring all references are unique and correctly resolved.
After applying this patch, `make htmldocs` completes without
any warnings, and all hyperlinks in intel_pstate.html render properly.
Signed-off-by: Swaraj Gaikwad <swarajgaikwad1925@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
[ rjw: Subject adjustment ]
Link: https://patch.msgid.link/20251029134737.42229-1-swarajgaikwad1925@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Yohei Kojima
|
04623798aa |
docs: admin-guide: Fix a typo in kernel-parameters.txt
Fix a typo in the stacktrace parameter description in kernel-parameters.txt Signed-off-by: Yohei Kojima <Yohei.Kojima@sony.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <edda15e3fcae13265278d3c3bd93ab077345d78f.1760498951.git.Yohei.Kojima@sony.com> |
||
|
Kuniyuki Iwashima
|
b46ab63181 |
net: Introduce net.core.bypass_prot_mem sysctl.
If a socket has sk->sk_bypass_prot_mem flagged, the socket opts out of the global protocol memory accounting. Let's control the flag by a new sysctl knob. The flag is written once during socket(2) and is inherited to child sockets. Tested with a script that creates local socket pairs and send()s a bunch of data without recv()ing. Setup: # mkdir /sys/fs/cgroup/test # echo $$ >> /sys/fs/cgroup/test/cgroup.procs # sysctl -q net.ipv4.tcp_mem="1000 1000 1000" # ulimit -n 524288 Without net.core.bypass_prot_mem, charged to tcp_mem & memcg # python3 pressure.py & # cat /sys/fs/cgroup/test/memory.stat | grep sock sock 22642688 <-------------------------------------- charged to memcg # cat /proc/net/sockstat| grep TCP TCP: inuse 2006 orphan 0 tw 0 alloc 2008 mem 5376 <-- charged to tcp_mem # ss -tn | head -n 5 State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 2000 0 127.0.0.1:34479 127.0.0.1:53188 ESTAB 2000 0 127.0.0.1:34479 127.0.0.1:49972 ESTAB 2000 0 127.0.0.1:34479 127.0.0.1:53868 ESTAB 2000 0 127.0.0.1:34479 127.0.0.1:53554 # nstat | grep Pressure || echo no pressure TcpExtTCPMemoryPressures 1 0.0 With net.core.bypass_prot_mem=1, charged to memcg only: # sysctl -q net.core.bypass_prot_mem=1 # python3 pressure.py & # cat /sys/fs/cgroup/test/memory.stat | grep sock sock 2757468160 <------------------------------------ charged to memcg # cat /proc/net/sockstat | grep TCP TCP: inuse 2006 orphan 0 tw 0 alloc 2008 mem 0 <- NOT charged to tcp_mem # ss -tn | head -n 5 State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 111000 0 127.0.0.1:36019 127.0.0.1:49026 ESTAB 110000 0 127.0.0.1:36019 127.0.0.1:45630 ESTAB 110000 0 127.0.0.1:36019 127.0.0.1:44870 ESTAB 111000 0 127.0.0.1:36019 127.0.0.1:45274 # nstat | grep Pressure || echo no pressure no pressure Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Link: https://patch.msgid.link/20251014235604.3057003-4-kuniyu@google.com |
||
|
Jakub Kicinski
|
55db64ddd6 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.18-rc2). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Eric Dumazet
|
2ddef3462b |
net: add /proc/sys/net/core/txq_reselection_ms control
Add a new sysctl to control how often a queue reselection can happen even if a flow has a persistent queue of skbs in a Qdisc or NIC queue. A value of zero means the feature is disabled. Default is 1000 (1 second). This sysctl is used in the following patch. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20251013152234.842065-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Akiyoshi Kurita
|
f9e51009b0 |
Documentation: admin-guide: Correct spelling of "userspace"
The term "userspace" should be a single word. Fix the typo "userpace" accordingly. Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20250926190019.41788-1-weibu@redadmin.org> |
||
|
Hugo Osvaldo Barrera
|
8e3b02d260 |
Documentation/x86: explain LINUX_EFI_INITRD_MEDIA_GUID
Since the Handover Protocol was deprecated, the recommended approach is to provide an initrd using a UEFI boot service with the LINUX_EFI_INITRD_MEDIA_GUID device path. Documentation for the new approach has been no more than an admonition with a link to an existing implementation. Provide a short explanation of this functionality, to ease future implementations without having to reverse engineer existing ones. [Bagas: Don't use :ref: link to EFI stub documentation and refer to OVMF/edk2 implementation] Signed-off-by: Hugo Osvaldo Barrera <hugo@whynothugo.nl> Link: https://lore.kernel.org/r/20250428131206.8656-2-hugo@whynothugo.nl Co-developed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20251013085718.27085-1-bagasdotme@gmail.com> |
||
|
Raphael Gallais-Pou
|
203ee65bfd |
media: doc/dt-bindings: remove support of stih407-c8sectpfe
Remove files documentation from stih407-c8sectpfe driver. Signed-off-by: Raphael Gallais-Pou <rgallaispou@gmail.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> [hverkuil: slight change of the Subject, mention doc changes as well] |
||
|
Linus Torvalds
|
9591fdb061 |
- Remove a bunch of asm implementing condition flags testing in KVM's
emulator in favor of int3_emulate_jcc() which is written in C - Replace KVM fastops with C-based stubs which avoids problems with the fastop infra related to latter not adhering to the C ABI due to their special calling convention and, more importantly, bypassing compiler control-flow integrity checking because they're written in asm - Remove wrongly used static branches and other ugliness accumulated over time in hyperv's hypercall implementation with a proper static function call to the correct hypervisor call variant - Add some fixes and modifications to allow running FRED-enabled kernels in KVM even on non-FRED hardware - Add kCFI improvements like validating indirect calls and prepare for enabling kCFI with GCC. Add cmdline params documentation and other code cleanups - Use the single-byte 0xd6 insn as the official #UD single-byte undefined opcode instruction as agreed upon by both x86 vendors - Other smaller cleanups and touchups all over the place -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmjqXxkACgkQEsHwGGHe VUq9QBAAsjaay99a1+Dc53xyP1/HzCUFZDOzEYhj9zF85I8/xA9vTXZr7Qg2m6os +4EEmnlwU43AR5KgwGJcuszLF9qSqTMz5qkAdFpvnoQ1Hbc8b49A+3yo9/hM7NA2 gPGH0gVZVBcffoETiQ8tJN6C9H6Ec0nTZwKTbasWwxz5oUAw+ppjP+aF4rFQ2/5w b1ofrcga5yucjvSlXjBOEwHvd21l7O9iMre1oGEn6b0E2LU8ldToRkJkVZIhkWeL 2Iq3gYtVNN4Ao06WbV/EfXAqg5HWXjcm5bLcUXDtSF+Blae+gWoCjrT7XQdQGyEq J12l4FbIZk5Ha8eWAC425ye9i3Wwo+oie3Cc4SVCMdv5A+AmOF0ijAlo1hcxq0rX eGNWm8BKJOJ9zz1kxLISO7CfjULKgpsXLabF5a19uwoCsQgj5YrhlJezaIKHXbnK OWwHWg9IuRkN2KLmJa7pXtHkuAHp4MtEV9TP9kU2WCvCInrNrzp3gYtds3pri82c 8ove+WA3yb/AQ6RCq5vAMLYXBxMRbN7FrmY5ZuwgWJTMi6cp1Sp02mhobwJOgNhO H7nKWCZnQMyCLPzVeg97HTSgqSXw13dSrujWX9gWYVWBMfZO1B9HcUrhtiOhH7Q9 cvELkcqaxKrCKdRHLLYgHeMIQU2tdpsQ5TXHm7C7liEcZPZpk+g= =3Otb -----END PGP SIGNATURE----- Merge tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull more x86 updates from Borislav Petkov: - Remove a bunch of asm implementing condition flags testing in KVM's emulator in favor of int3_emulate_jcc() which is written in C - Replace KVM fastops with C-based stubs which avoids problems with the fastop infra related to latter not adhering to the C ABI due to their special calling convention and, more importantly, bypassing compiler control-flow integrity checking because they're written in asm - Remove wrongly used static branches and other ugliness accumulated over time in hyperv's hypercall implementation with a proper static function call to the correct hypervisor call variant - Add some fixes and modifications to allow running FRED-enabled kernels in KVM even on non-FRED hardware - Add kCFI improvements like validating indirect calls and prepare for enabling kCFI with GCC. Add cmdline params documentation and other code cleanups - Use the single-byte 0xd6 insn as the official #UD single-byte undefined opcode instruction as agreed upon by both x86 vendors - Other smaller cleanups and touchups all over the place * tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) x86,retpoline: Optimize patch_retpoline() x86,ibt: Use UDB instead of 0xEA x86/cfi: Remove __noinitretpoline and __noretpoline x86/cfi: Add "debug" option to "cfi=" bootparam x86/cfi: Standardize on common "CFI:" prefix for CFI reports x86/cfi: Document the "cfi=" bootparam options x86/traps: Clarify KCFI instruction layout compiler_types.h: Move __nocfi out of compiler-specific header objtool: Validate kCFI calls x86/fred: KVM: VMX: Always use FRED for IRQs when CONFIG_X86_FRED=y x86/fred: Play nice with invoking asm_fred_entry_from_kvm() on non-FRED hardware x86/fred: Install system vector handlers even if FRED isn't fully enabled x86/hyperv: Use direct call to hypercall-page x86/hyperv: Clean up hv_do_hypercall() KVM: x86: Remove fastops KVM: x86: Convert em_salc() to C KVM: x86: Introduce EM_ASM_3WCL KVM: x86: Introduce EM_ASM_1SRC2 KVM: x86: Introduce EM_ASM_2CL KVM: x86: Introduce EM_ASM_2W ... |
||
|
Linus Torvalds
|
abdf766d14 |
More power management updates for 6.18-rc1
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6 cycle
that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency() to
indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the
given device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update return
values in kerneldoc comments for the runtime PM API (Brian Norris,
Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)
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Merge tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are cpufreq fixes and cleanups on top of the material merged
previously, a power management core code fix and updates of the
runtime PM framework including unit tests, documentation updates and
introduction of auto-cleanup macros for runtime PM "resume and get"
and "get without resuming" operations.
Specifics:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6
cycle that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency()
to indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the given
device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update
return values in kerneldoc comments for the runtime PM API (Brian
Norris, Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)"
* tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
|
||
|
Linus Torvalds
|
971199ad2a |
arm64 fixes for -rc1
- Preserve old 'tt_core' UAPI for Hisilicon L3C PMU driver. - Ensure linear alias of kprobes instruction page is not writable. - Fix kernel stack unwinding from BPF. - Fix build warnings from the Fujitsu uncore PMU documentation. - Fix hang with deferred 'struct page' initialisation and MTE. - Consolidate KPTI page-table re-writing code. -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmjj0Q0QHHdpbGxAa2Vy bmVsLm9yZwAKCRC3rHDchMFjNJRvCACkC6isoQt+EdcS658ulgQJux9dqqJZq5uk IdSFmorYd+MZfRcXe0HQ/rSJcAHzZH2gS1MvSeD1JfILPnY1ZkCFWHxsDdKK0Yc7 Sn+3xYw07qpBiq/hCvf9udTCl61vJveexUazV+FgOd9cT+cQOtkqW98uggjOx6Ry HeECTovZ6NR23pB9NSu5l6lMbAOKZvbDuBYDOujYn/X5jP4v6qlGJTdB2YOA/qPy C3aOcqCOWuET6uQ5iGeXWEB+RF6QCNuqjgQYo745Q+yKFdfZ60wokP8Fv2GERzlu LO8YkYCzZRJF+lBbL8KfTjRE/fC6f0rHx9Zensm7FH9WsaDO/mWw =xrAV -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: - Preserve old 'tt_core' UAPI for Hisilicon L3C PMU driver - Ensure linear alias of kprobes instruction page is not writable - Fix kernel stack unwinding from BPF - Fix build warnings from the Fujitsu uncore PMU documentation - Fix hang with deferred 'struct page' initialisation and MTE - Consolidate KPTI page-table re-writing code * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mte: Do not flag the zero page as PG_mte_tagged docs: perf: Fujitsu: Fix htmldocs build warnings and errors arm64: mm: Move KPTI helpers to mmu.c tracing: Fix the bug where bpf_get_stackid returns -EFAULT on the ARM64 arm64: kprobes: call set_memory_rox() for kprobe page drivers/perf: hisi: Add tt_core_deprecated for compatibility |
||
|
Rafael J. Wysocki
|
53d4d315d4 |
Merge branch 'pm-cpufreq'
Merge cpufreq fixes and cleanups, mostly on top of those fixes, for 6.18-rc1: - Make cpufreq drivers setting the default CPU transition latency to CPUFREQ_ETERNAL specify a proper default transition latency value instead which addresses a regression introduced during the 6.6 cycle that broke CPUFREQ_ETERNAL handling (Rafael Wysocki) - Make the cpufreq CPPC driver use a proper transition delay value when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency() to indicate an error condition (Rafael Wysocki) - Make cppc_get_transition_latency() return a negative error code to indicate error conditions instead of using CPUFREQ_ETERNAL for this purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael Wysocki, Gopi Krishna Menon) - Fix device leak in the mediatek cpufreq driver (Johan Hovold) - Set target frequency on all CPUs sharing a policy during frequency updates in the tegra186 cpufreq driver and make it initialize all cores to max frequencies (Aaron Kling) - Rust cpufreq helper cleanup (Thorsten Blum) * pm-cpufreq: docs/zh_CN: Fix malformed table docs/zh_TW: Fix malformed table cpufreq: Drop unused symbol CPUFREQ_ETERNAL ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency cpufreq: tegra186: Initialize all cores to max frequencies cpufreq: tegra186: Set target frequency for all cpus in policy rust: cpufreq: streamline find_supply_names cpufreq: mediatek: fix device leak on probe failure |
||
|
Linus Torvalds
|
256e341706 |
Generic:
* Rework almost all of KVM's exports to expose symbols only to KVM's x86
vendor modules (kvm-{amd,intel}.ko and PPC's kvm-{pr,hv}.ko.
x86:
* Rework almost all of KVM x86's exports to expose symbols only to KVM's
vendor modules, i.e. to kvm-{amd,intel}.ko.
* Add support for virtualizing Control-flow Enforcement Technology (CET) on
Intel (Shadow Stacks and Indirect Branch Tracking) and AMD (Shadow Stacks).
It's worth noting that while SHSTK and IBT can be enabled separately in CPUID,
it is not really possible to virtualize them separately. Therefore, Intel
processors will really allow both SHSTK and IBT under the hood if either is
made visible in the guest's CPUID. The alternative would be to intercept
XSAVES/XRSTORS, which is not feasible for performance reasons.
* Fix a variety of fuzzing WARNs all caused by checking L1 intercepts when
completing userspace I/O. KVM has already committed to allowing L2 to
to perform I/O at that point.
* Emulate PERF_CNTR_GLOBAL_STATUS_SET for PerfMonV2 guests, as the MSR is
supposed to exist for v2 PMUs.
* Allow Centaur CPU leaves (base 0xC000_0000) for Zhaoxin CPUs.
* Add support for the immediate forms of RDMSR and WRMSRNS, sans full
emulator support (KVM should never need to emulate the MSRs outside of
forced emulation and other contrived testing scenarios).
* Clean up the MSR APIs in preparation for CET and FRED virtualization, as
well as mediated vPMU support.
* Clean up a pile of PMU code in anticipation of adding support for mediated
vPMUs.
* Reject in-kernel IOAPIC/PIT for TDX VMs, as KVM can't obtain EOI vmexits
needed to faithfully emulate an I/O APIC for such guests.
* Many cleanups and minor fixes.
* Recover possible NX huge pages within the TDP MMU under read lock to
reduce guest jitter when restoring NX huge pages.
* Return -EAGAIN during prefault if userspace concurrently deletes/moves the
relevant memslot, to fix an issue where prefaulting could deadlock with the
memslot update.
x86 (AMD):
* Enable AVIC by default for Zen4+ if x2AVIC (and other prereqs) is supported.
* Require a minimum GHCB version of 2 when starting SEV-SNP guests via
KVM_SEV_INIT2 so that invalid GHCB versions result in immediate errors
instead of latent guest failures.
* Add support for SEV-SNP's CipherText Hiding, an opt-in feature that prevents
unauthorized CPU accesses from reading the ciphertext of SNP guest private
memory, e.g. to attempt an offline attack. This feature splits the shared
SEV-ES/SEV-SNP ASID space into separate ranges for SEV-ES and SEV-SNP guests,
therefore a new module parameter is needed to control the number of ASIDs
that can be used for VMs with CipherText Hiding vs. how many can be used to
run SEV-ES guests.
* Add support for Secure TSC for SEV-SNP guests, which prevents the untrusted
host from tampering with the guest's TSC frequency, while still allowing the
the VMM to configure the guest's TSC frequency prior to launch.
* Validate the XCR0 provided by the guest (via the GHCB) to avoid bugs
resulting from bogus XCR0 values.
* Save an SEV guest's policy if and only if LAUNCH_START fully succeeds to
avoid leaving behind stale state (thankfully not consumed in KVM).
* Explicitly reject non-positive effective lengths during SNP's LAUNCH_UPDATE
instead of subtly relying on guest_memfd to deal with them.
* Reload the pre-VMRUN TSC_AUX on #VMEXIT for SEV-ES guests, not the host's
desired TSC_AUX, to fix a bug where KVM was keeping a different vCPU's
TSC_AUX in the host MSR until return to userspace.
KVM (Intel):
* Preparation for FRED support.
* Don't retry in TDX's anti-zero-step mitigation if the target memslot is
invalid, i.e. is being deleted or moved, to fix a deadlock scenario similar
to the aforementioned prefaulting case.
* Misc bugfixes and minor cleanups.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull x86 kvm updates from Paolo Bonzini:
"Generic:
- Rework almost all of KVM's exports to expose symbols only to KVM's
x86 vendor modules (kvm-{amd,intel}.ko and PPC's kvm-{pr,hv}.ko
x86:
- Rework almost all of KVM x86's exports to expose symbols only to
KVM's vendor modules, i.e. to kvm-{amd,intel}.ko
- Add support for virtualizing Control-flow Enforcement Technology
(CET) on Intel (Shadow Stacks and Indirect Branch Tracking) and AMD
(Shadow Stacks).
It is worth noting that while SHSTK and IBT can be enabled
separately in CPUID, it is not really possible to virtualize them
separately. Therefore, Intel processors will really allow both
SHSTK and IBT under the hood if either is made visible in the
guest's CPUID. The alternative would be to intercept
XSAVES/XRSTORS, which is not feasible for performance reasons
- Fix a variety of fuzzing WARNs all caused by checking L1 intercepts
when completing userspace I/O. KVM has already committed to
allowing L2 to to perform I/O at that point
- Emulate PERF_CNTR_GLOBAL_STATUS_SET for PerfMonV2 guests, as the
MSR is supposed to exist for v2 PMUs
- Allow Centaur CPU leaves (base 0xC000_0000) for Zhaoxin CPUs
- Add support for the immediate forms of RDMSR and WRMSRNS, sans full
emulator support (KVM should never need to emulate the MSRs outside
of forced emulation and other contrived testing scenarios)
- Clean up the MSR APIs in preparation for CET and FRED
virtualization, as well as mediated vPMU support
- Clean up a pile of PMU code in anticipation of adding support for
mediated vPMUs
- Reject in-kernel IOAPIC/PIT for TDX VMs, as KVM can't obtain EOI
vmexits needed to faithfully emulate an I/O APIC for such guests
- Many cleanups and minor fixes
- Recover possible NX huge pages within the TDP MMU under read lock
to reduce guest jitter when restoring NX huge pages
- Return -EAGAIN during prefault if userspace concurrently
deletes/moves the relevant memslot, to fix an issue where
prefaulting could deadlock with the memslot update
x86 (AMD):
- Enable AVIC by default for Zen4+ if x2AVIC (and other prereqs) is
supported
- Require a minimum GHCB version of 2 when starting SEV-SNP guests
via KVM_SEV_INIT2 so that invalid GHCB versions result in immediate
errors instead of latent guest failures
- Add support for SEV-SNP's CipherText Hiding, an opt-in feature that
prevents unauthorized CPU accesses from reading the ciphertext of
SNP guest private memory, e.g. to attempt an offline attack. This
feature splits the shared SEV-ES/SEV-SNP ASID space into separate
ranges for SEV-ES and SEV-SNP guests, therefore a new module
parameter is needed to control the number of ASIDs that can be used
for VMs with CipherText Hiding vs. how many can be used to run
SEV-ES guests
- Add support for Secure TSC for SEV-SNP guests, which prevents the
untrusted host from tampering with the guest's TSC frequency, while
still allowing the the VMM to configure the guest's TSC frequency
prior to launch
- Validate the XCR0 provided by the guest (via the GHCB) to avoid
bugs resulting from bogus XCR0 values
- Save an SEV guest's policy if and only if LAUNCH_START fully
succeeds to avoid leaving behind stale state (thankfully not
consumed in KVM)
- Explicitly reject non-positive effective lengths during SNP's
LAUNCH_UPDATE instead of subtly relying on guest_memfd to deal with
them
- Reload the pre-VMRUN TSC_AUX on #VMEXIT for SEV-ES guests, not the
host's desired TSC_AUX, to fix a bug where KVM was keeping a
different vCPU's TSC_AUX in the host MSR until return to userspace
KVM (Intel):
- Preparation for FRED support
- Don't retry in TDX's anti-zero-step mitigation if the target
memslot is invalid, i.e. is being deleted or moved, to fix a
deadlock scenario similar to the aforementioned prefaulting case
- Misc bugfixes and minor cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (142 commits)
KVM: x86: Export KVM-internal symbols for sub-modules only
KVM: x86: Drop pointless exports of kvm_arch_xxx() hooks
KVM: x86: Move kvm_intr_is_single_vcpu() to lapic.c
KVM: Export KVM-internal symbols for sub-modules only
KVM: s390/vfio-ap: Use kvm_is_gpa_in_memslot() instead of open coded equivalent
KVM: VMX: Make CR4.CET a guest owned bit
KVM: selftests: Verify MSRs are (not) in save/restore list when (un)supported
KVM: selftests: Add coverage for KVM-defined registers in MSRs test
KVM: selftests: Add KVM_{G,S}ET_ONE_REG coverage to MSRs test
KVM: selftests: Extend MSRs test to validate vCPUs without supported features
KVM: selftests: Add support for MSR_IA32_{S,U}_CET to MSRs test
KVM: selftests: Add an MSR test to exercise guest/host and read/write
KVM: x86: Define AMD's #HV, #VC, and #SX exception vectors
KVM: x86: Define Control Protection Exception (#CP) vector
KVM: x86: Add human friendly formatting for #XM, and #VE
KVM: SVM: Enable shadow stack virtualization for SVM
KVM: SEV: Synchronize MSR_IA32_XSS from the GHCB when it's valid
KVM: SVM: Pass through shadow stack MSRs as appropriate
KVM: SVM: Update dump_vmcb with shadow stack save area additions
KVM: nSVM: Save/load CET Shadow Stack state to/from vmcb12/vmcb02
...
|
||
|
Linus Torvalds
|
7dbec0bbc3 |
dm docs: fix typos
dm, dm-ima, dm-bufio, dm-vdo, dm-raid: small refactoring dm-error: mark it with DM_TARGET_PASSES_INTEGRITY dm-pcache: a new target for read/write caching on persistent memory dm-request-based: fix NULL pointer dereference and quiesce_depth out of sync dm-linear: optimize REQ_PREFLUSH dm-vdo: return error on corrupted metadata dm-integrity: support asynchronous hash interface -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRnH8MwLyZDhyYfesYTAyx9YGnhbQUCaN/T8RQcbXBhdG9ja2FA cmVkaGF0LmNvbQAKCRATAyx9YGnhbdPWAP9JEpnq09RzwneB/FdCE2WsjInsAaas eYqKrkgoatVzOwEAoqEzYb9IUrKMZbFPdWzEA1aXUBCH+UAKhm+G9WG5Vw0= =dCXi -----END PGP SIGNATURE----- Merge tag 'for-6.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mikulas Patocka: - a new dm-pcache target for read/write caching on persistent memory - fix typos in docs - misc small refactoring - mark dm-error with DM_TARGET_PASSES_INTEGRITY - dm-request-based: fix NULL pointer dereference and quiesce_depth out of sync - dm-linear: optimize REQ_PREFLUSH - dm-vdo: return error on corrupted metadata - dm-integrity: support asynchronous hash interface * tag 'for-6.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (27 commits) dm raid: use proper md_ro_state enumerators dm-integrity: prefer synchronous hash interface dm-integrity: enable asynchronous hash interface dm-integrity: rename internal_hash dm-integrity: add the "offset" argument dm-integrity: allocate the recalculate buffer with kmalloc dm-integrity: introduce integrity_kmap and integrity_kunmap dm-integrity: replace bvec_kmap_local with kmap_local_page dm-integrity: use internal variable for digestsize dm vdo: return error on corrupted metadata in start_restoring_volume functions dm vdo: Update code to use mem_is_zero dm: optimize REQ_PREFLUSH with data when using the linear target dm-pcache: use int type to store negative error codes dm: fix "writen"->"written" dm-pcache: cleanup: fix coding style report by checkpatch.pl dm-pcache: remove ctrl_lock for pcache_cache_segment dm: fix NULL pointer dereference in __dm_suspend() dm: fix queue start/stop imbalance under suspend/load/resume races dm-pcache: add persistent cache target in device-mapper dm error: mark as DM_TARGET_PASSES_INTEGRITY ... |
||
|
Linus Torvalds
|
ee2fe81cdc |
It has been a relatively busy cycle in docsland, with changes all over:
- Bring the kernel memory-model docs into the Sphinx build in the "literal
include" mode.
- Lots of build-infrastructure work, further cleaning up long-term
kernel-doc technical debt. The sphinx-pre-install tool has been
converted to Python and updated for current systems.
- A new tool to detect when documents have been moved and generate HTML
redirects; this can be used on kernel.org (or any other site hosting the
rendered docs) to avoid breaking links.
- Automated processing of the YAML files describing the netlink protocol.
- A significant update of the maintainer's PGP guide.
...and a seemingly endless series of typo fixes, build-problem fixes, etc.
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Merge tag 'docs-6.18' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a relatively busy cycle in docsland, with changes all
over:
- Bring the kernel memory-model docs into the Sphinx build in the
"literal include" mode.
- Lots of build-infrastructure work, further cleaning up long-term
kernel-doc technical debt. The sphinx-pre-install tool has been
converted to Python and updated for current systems.
- A new tool to detect when documents have been moved and generate
HTML redirects; this can be used on kernel.org (or any other site
hosting the rendered docs) to avoid breaking links.
- Automated processing of the YAML files describing the netlink
protocol.
- A significant update of the maintainer's PGP guide.
... and a seemingly endless series of typo fixes, build-problem fixes,
etc"
* tag 'docs-6.18' of git://git.lwn.net/linux: (193 commits)
Documentation/features: Update feature lists for 6.17-rc7
docs: remove cdomain.py
Documentation/process: submitting-patches: fix typo in "were do"
docs: dev-tools/lkmm: Fix typo of missing file extension
Documentation: trace: histogram: Convert ftrace docs cross-reference
Documentation: trace: histogram-design: Wrap introductory note in note:: directive
Documentation: trace: historgram-design: Separate sched_waking histogram section heading and the following diagram
Documentation: trace: histogram-design: Trim trailing vertices in diagram explanation text
Documentation: trace: histogram: Fix histogram trigger subsection number order
docs: driver-api: fix spelling of "buses".
Documentation: fbcon: Use admonition directives
Documentation: fbcon: Reindent 8th step of attach/detach/unload
Documentation: fbcon: Add boot options and attach/detach/unload section headings
docs: filesystems: sysfs: add remaining top level sysfs directory descriptions
docs: filesystems: sysfs: clarify symlink destinations in dev and bus/devices descriptions
docs: filesystems: sysfs: remove top level sysfs net directory
docs: maintainer: Fix ambiguous subheading formatting
docs: kdoc: a few more dump_typedef() tweaks
docs: kdoc: remove redundant comment stripping in dump_typedef()
docs: kdoc: remove some dead code in dump_typedef()
...
|
||
|
Linus Torvalds
|
e406d57be7 |
Patch series in this pull request:
- The 3 patch series "ida: Remove the ida_simple_xxx() API" from Christophe Jaillet completes the removal of this legacy IDR API. - The 9 patch series "panic: introduce panic status function family" from Jinchao Wang provides a number of cleanups to the panic code and its various helpers, which were rather ad-hoc and scattered all over the place. - The 5 patch series "tools/delaytop: implement real-time keyboard interaction support" from Fan Yu adds a few nice user-facing usability changes to the delaytop monitoring tool. - The 3 patch series "efi: Fix EFI boot with kexec handover (KHO)" from Evangelos Petrongonas fixes a panic which was happening with the combination of EFI and KHO. - The 2 patch series "Squashfs: performance improvement and a sanity check" from Phillip Lougher teaches squashfs's lseek() about SEEK_DATA/SEEK_HOLE. A mere 150x speedup was measured for a well-chosen microbenchmark. - Plus another 50-odd singleton patches all over the place. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaN78zwAKCRDdBJ7gKXxA jhLeAQCddTv0XtSUTrvBvmrJVUBrQQeJc+LtNopMIjfAF/WAWAEAogSVKxg+HHEB GaVixx4zDriNzEqrqiCx9rm4l+YooQA= =XRe0 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - "ida: Remove the ida_simple_xxx() API" from Christophe Jaillet completes the removal of this legacy IDR API - "panic: introduce panic status function family" from Jinchao Wang provides a number of cleanups to the panic code and its various helpers, which were rather ad-hoc and scattered all over the place - "tools/delaytop: implement real-time keyboard interaction support" from Fan Yu adds a few nice user-facing usability changes to the delaytop monitoring tool - "efi: Fix EFI boot with kexec handover (KHO)" from Evangelos Petrongonas fixes a panic which was happening with the combination of EFI and KHO - "Squashfs: performance improvement and a sanity check" from Phillip Lougher teaches squashfs's lseek() about SEEK_DATA/SEEK_HOLE. A mere 150x speedup was measured for a well-chosen microbenchmark - plus another 50-odd singleton patches all over the place * tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (75 commits) Squashfs: reject negative file sizes in squashfs_read_inode() kallsyms: use kmalloc_array() instead of kmalloc() MAINTAINERS: update Sibi Sankar's email address Squashfs: add SEEK_DATA/SEEK_HOLE support Squashfs: add additional inode sanity checking lib/genalloc: fix device leak in of_gen_pool_get() panic: remove CONFIG_PANIC_ON_OOPS_VALUE ocfs2: fix double free in user_cluster_connect() checkpatch: suppress strscpy warnings for userspace tools cramfs: fix incorrect physical page address calculation kernel: prevent prctl(PR_SET_PDEATHSIG) from racing with parent process exit Squashfs: fix uninit-value in squashfs_get_parent kho: only fill kimage if KHO is finalized ocfs2: avoid extra calls to strlen() after ocfs2_sprintf_system_inode_name() kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths sched/task.h: fix the wrong comment on task_lock() nesting with tasklist_lock coccinelle: platform_no_drv_owner: handle also built-in drivers coccinelle: of_table: handle SPI device ID tables lib/decompress: use designated initializers for struct compress_format efi: support booting with kexec handover (KHO) ... |
||
|
Linus Torvalds
|
8804d970fa |
Summary of significant series in this pull request:
- The 3 patch series "mm, swap: improve cluster scan strategy" from Kairui Song improves performance and reduces the failure rate of swap cluster allocation. - The 4 patch series "support large align and nid in Rust allocators" from Vitaly Wool permits Rust allocators to set NUMA node and large alignment when perforning slub and vmalloc reallocs. - The 2 patch series "mm/damon/vaddr: support stat-purpose DAMOS" from Yueyang Pan extend DAMOS_STAT's handling of the DAMON operations sets for virtual address spaces for ops-level DAMOS filters. - The 3 patch series "execute PROCMAP_QUERY ioctl under per-vma lock" from Suren Baghdasaryan reduces mmap_lock contention during reads of /proc/pid/maps. - The 2 patch series "mm/mincore: minor clean up for swap cache checking" from Kairui Song performs some cleanup in the swap code. - The 11 patch series "mm: vm_normal_page*() improvements" from David Hildenbrand provides code cleanup in the pagemap code. - The 5 patch series "add persistent huge zero folio support" from Pankaj Raghav provides a block layer speedup by optionalls making the huge_zero_pagepersistent, instead of releasing it when its refcount falls to zero. - The 3 patch series "kho: fixes and cleanups" from Mike Rapoport adds a few touchups to the recently added Kexec Handover feature. - The 10 patch series "mm: make mm->flags a bitmap and 64-bit on all arches" from Lorenzo Stoakes turns mm_struct.flags into a bitmap. To end the constant struggle with space shortage on 32-bit conflicting with 64-bit's needs. - The 2 patch series "mm/swapfile.c and swap.h cleanup" from Chris Li cleans up some swap code. - The 7 patch series "selftests/mm: Fix false positives and skip unsupported tests" from Donet Tom fixes a few things in our selftests code. - The 7 patch series "prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised" from David Hildenbrand "allows individual processes to opt-out of THP=always into THP=madvise, without affecting other workloads on the system". It's a long story - the [1/N] changelog spells out the considerations. - The 11 patch series "Add and use memdesc_flags_t" from Matthew Wilcox gets us started on the memdesc project. Please see https://kernelnewbies.org/MatthewWilcox/Memdescs and https://blogs.oracle.com/linux/post/introducing-memdesc. - The 3 patch series "Tiny optimization for large read operations" from Chi Zhiling improves the efficiency of the pagecache read path. - The 5 patch series "Better split_huge_page_test result check" from Zi Yan improves our folio splitting selftest code. - The 2 patch series "test that rmap behaves as expected" from Wei Yang adds some rmap selftests. - The 3 patch series "remove write_cache_pages()" from Christoph Hellwig removes that function and converts its two remaining callers. - The 2 patch series "selftests/mm: uffd-stress fixes" from Dev Jain fixes some UFFD selftests issues. - The 3 patch series "introduce kernel file mapped folios" from Boris Burkov introduces the concept of "kernel file pages". Using these permits btrfs to account its metadata pages to the root cgroup, rather than to the cgroups of random inappropriate tasks. - The 2 patch series "mm/pageblock: improve readability of some pageblock handling" from Wei Yang provides some readability improvements to the page allocator code. - The 11 patch series "mm/damon: support ARM32 with LPAE" from SeongJae Park teaches DAMON to understand arm32 highmem. - The 4 patch series "tools: testing: Use existing atomic.h for vma/maple tests" from Brendan Jackman performs some code cleanups and deduplication under tools/testing/. - The 2 patch series "maple_tree: Fix testing for 32bit compiles" from Liam Howlett fixes a couple of 32-bit issues in tools/testing/radix-tree.c. - The 2 patch series "kasan: unify kasan_enabled() and remove arch-specific implementations" from Sabyrzhan Tasbolatov moves KASAN arch-specific initialization code into a common arch-neutral implementation. - The 3 patch series "mm: remove zpool" from Johannes Weiner removes zspool - an indirection layer which now only redirects to a single thing (zsmalloc). - The 2 patch series "mm: task_stack: Stack handling cleanups" from Pasha Tatashin makes a couple of cleanups in the fork code. - The 37 patch series "mm: remove nth_page()" from David Hildenbrand makes rather a lot of adjustments at various nth_page() callsites, eventually permitting the removal of that undesirable helper function. - The 2 patch series "introduce kasan.write_only option in hw-tags" from Yeoreum Yun creates a KASAN read-only mode for ARM, using that architecture's memory tagging feature. It is felt that a read-only mode KASAN is suitable for use in production systems rather than debug-only. - The 3 patch series "mm: hugetlb: cleanup hugetlb folio allocation" from Kefeng Wang does some tidying in the hugetlb folio allocation code. - The 12 patch series "mm: establish const-correctness for pointer parameters" from Max Kellermann makes quite a number of the MM API functions more accurate about the constness of their arguments. This was getting in the way of subsystems (in this case CEPH) when they attempt to improving their own const/non-const accuracy. - The 7 patch series "Cleanup free_pages() misuse" from Vishal Moola fixes a number of code sites which were confused over when to use free_pages() vs __free_pages(). - The 3 patch series "Add Rust abstraction for Maple Trees" from Alice Ryhl makes the mapletree code accessible to Rust. Required by nouveau and by its forthcoming successor: the new Rust Nova driver. - The 2 patch series "selftests/mm: split_huge_page_test: split_pte_mapped_thp improvements" from David Hildenbrand adds a fix and some cleanups to the thp selftesting code. - The 14 patch series "mm, swap: introduce swap table as swap cache (phase I)" from Chris Li and Kairui Song is the first step along the path to implementing "swap tables" - a new approach to swap allocation and state tracking which is expected to yield speed and space improvements. This patchset itself yields a 5-20% performance benefit in some situations. - The 3 patch series "Some ptdesc cleanups" from Matthew Wilcox utilizes the new memdesc layer to clean up the ptdesc code a little. - The 3 patch series "Fix va_high_addr_switch.sh test failure" from Chunyu Hu fixes some issues in our 5-level pagetable selftesting code. - The 2 patch series "Minor fixes for memory allocation profiling" from Suren Baghdasaryan addresses a couple of minor issues in relatively new memory allocation profiling feature. - The 3 patch series "Small cleanups" from Matthew Wilcox has a few cleanups in preparation for more memdesc work. - The 2 patch series "mm/damon: add addr_unit for DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan makes some changes to DAMON in furtherance of supporting arm highmem. - The 2 patch series "selftests/mm: Add -Wunreachable-code and fix warnings" from Muhammad Anjum adds that compiler check to selftests code and fixes the fallout, by removing dead code. - The 10 patch series "Improvements to Victim Process Thawing and OOM Reaper Traversal Order" from zhongjinji makes a number of improvements in the OOM killer: mainly thawing a more appropriate group of victim threads so they can release resources. - The 5 patch series "mm/damon: misc fixups and improvements for 6.18" from SeongJae Park is a bunch of small and unrelated fixups for DAMON. - The 7 patch series "mm/damon: define and use DAMON initialization check function" from SeongJae Park implement reliability and maintainability improvements to a recently-added bug fix. - The 2 patch series "mm/damon/stat: expose auto-tuned intervals and non-idle ages" from SeongJae Park provides additional transparency to userspace clients of the DAMON_STAT information. - The 2 patch series "Expand scope of khugepaged anonymous collapse" from Dev Jain removes some constraints on khubepaged's collapsing of anon VMAs. It also increases the success rate of MADV_COLLAPSE against an anon vma. - The 2 patch series "mm: do not assume file == vma->vm_file in compat_vma_mmap_prepare()" from Lorenzo Stoakes moves us further towards removal of file_operations.mmap(). This patchset concentrates upon clearing up the treatment of stacked filesystems. - The 6 patch series "mm: Improve mlock tracking for large folios" from Kiryl Shutsemau provides some fixes and improvements to mlock's tracking of large folios. /proc/meminfo's "Mlocked" field became more accurate. - The 2 patch series "mm/ksm: Fix incorrect accounting of KSM counters during fork" from Donet Tom fixes several user-visible KSM stats inaccuracies across forks and adds selftest code to verify these counters. - The 2 patch series "mm_slot: fix the usage of mm_slot_entry" from Wei Yang addresses some potential but presently benign issues in KSM's mm_slot handling. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaN3cywAKCRDdBJ7gKXxA jtaPAQDmIuIu7+XnVUK5V11hsQ/5QtsUeLHV3OsAn4yW5/3dEQD/UddRU08ePN+1 2VRB0EwkLAdfMWW7TfiNZ+yhuoiL/AA= =4mhY -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "mm, swap: improve cluster scan strategy" from Kairui Song improves performance and reduces the failure rate of swap cluster allocation - "support large align and nid in Rust allocators" from Vitaly Wool permits Rust allocators to set NUMA node and large alignment when perforning slub and vmalloc reallocs - "mm/damon/vaddr: support stat-purpose DAMOS" from Yueyang Pan extend DAMOS_STAT's handling of the DAMON operations sets for virtual address spaces for ops-level DAMOS filters - "execute PROCMAP_QUERY ioctl under per-vma lock" from Suren Baghdasaryan reduces mmap_lock contention during reads of /proc/pid/maps - "mm/mincore: minor clean up for swap cache checking" from Kairui Song performs some cleanup in the swap code - "mm: vm_normal_page*() improvements" from David Hildenbrand provides code cleanup in the pagemap code - "add persistent huge zero folio support" from Pankaj Raghav provides a block layer speedup by optionalls making the huge_zero_pagepersistent, instead of releasing it when its refcount falls to zero - "kho: fixes and cleanups" from Mike Rapoport adds a few touchups to the recently added Kexec Handover feature - "mm: make mm->flags a bitmap and 64-bit on all arches" from Lorenzo Stoakes turns mm_struct.flags into a bitmap. To end the constant struggle with space shortage on 32-bit conflicting with 64-bit's needs - "mm/swapfile.c and swap.h cleanup" from Chris Li cleans up some swap code - "selftests/mm: Fix false positives and skip unsupported tests" from Donet Tom fixes a few things in our selftests code - "prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised" from David Hildenbrand "allows individual processes to opt-out of THP=always into THP=madvise, without affecting other workloads on the system". It's a long story - the [1/N] changelog spells out the considerations - "Add and use memdesc_flags_t" from Matthew Wilcox gets us started on the memdesc project. Please see https://kernelnewbies.org/MatthewWilcox/Memdescs and https://blogs.oracle.com/linux/post/introducing-memdesc - "Tiny optimization for large read operations" from Chi Zhiling improves the efficiency of the pagecache read path - "Better split_huge_page_test result check" from Zi Yan improves our folio splitting selftest code - "test that rmap behaves as expected" from Wei Yang adds some rmap selftests - "remove write_cache_pages()" from Christoph Hellwig removes that function and converts its two remaining callers - "selftests/mm: uffd-stress fixes" from Dev Jain fixes some UFFD selftests issues - "introduce kernel file mapped folios" from Boris Burkov introduces the concept of "kernel file pages". Using these permits btrfs to account its metadata pages to the root cgroup, rather than to the cgroups of random inappropriate tasks - "mm/pageblock: improve readability of some pageblock handling" from Wei Yang provides some readability improvements to the page allocator code - "mm/damon: support ARM32 with LPAE" from SeongJae Park teaches DAMON to understand arm32 highmem - "tools: testing: Use existing atomic.h for vma/maple tests" from Brendan Jackman performs some code cleanups and deduplication under tools/testing/ - "maple_tree: Fix testing for 32bit compiles" from Liam Howlett fixes a couple of 32-bit issues in tools/testing/radix-tree.c - "kasan: unify kasan_enabled() and remove arch-specific implementations" from Sabyrzhan Tasbolatov moves KASAN arch-specific initialization code into a common arch-neutral implementation - "mm: remove zpool" from Johannes Weiner removes zspool - an indirection layer which now only redirects to a single thing (zsmalloc) - "mm: task_stack: Stack handling cleanups" from Pasha Tatashin makes a couple of cleanups in the fork code - "mm: remove nth_page()" from David Hildenbrand makes rather a lot of adjustments at various nth_page() callsites, eventually permitting the removal of that undesirable helper function - "introduce kasan.write_only option in hw-tags" from Yeoreum Yun creates a KASAN read-only mode for ARM, using that architecture's memory tagging feature. It is felt that a read-only mode KASAN is suitable for use in production systems rather than debug-only - "mm: hugetlb: cleanup hugetlb folio allocation" from Kefeng Wang does some tidying in the hugetlb folio allocation code - "mm: establish const-correctness for pointer parameters" from Max Kellermann makes quite a number of the MM API functions more accurate about the constness of their arguments. This was getting in the way of subsystems (in this case CEPH) when they attempt to improving their own const/non-const accuracy - "Cleanup free_pages() misuse" from Vishal Moola fixes a number of code sites which were confused over when to use free_pages() vs __free_pages() - "Add Rust abstraction for Maple Trees" from Alice Ryhl makes the mapletree code accessible to Rust. Required by nouveau and by its forthcoming successor: the new Rust Nova driver - "selftests/mm: split_huge_page_test: split_pte_mapped_thp improvements" from David Hildenbrand adds a fix and some cleanups to the thp selftesting code - "mm, swap: introduce swap table as swap cache (phase I)" from Chris Li and Kairui Song is the first step along the path to implementing "swap tables" - a new approach to swap allocation and state tracking which is expected to yield speed and space improvements. This patchset itself yields a 5-20% performance benefit in some situations - "Some ptdesc cleanups" from Matthew Wilcox utilizes the new memdesc layer to clean up the ptdesc code a little - "Fix va_high_addr_switch.sh test failure" from Chunyu Hu fixes some issues in our 5-level pagetable selftesting code - "Minor fixes for memory allocation profiling" from Suren Baghdasaryan addresses a couple of minor issues in relatively new memory allocation profiling feature - "Small cleanups" from Matthew Wilcox has a few cleanups in preparation for more memdesc work - "mm/damon: add addr_unit for DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan makes some changes to DAMON in furtherance of supporting arm highmem - "selftests/mm: Add -Wunreachable-code and fix warnings" from Muhammad Anjum adds that compiler check to selftests code and fixes the fallout, by removing dead code - "Improvements to Victim Process Thawing and OOM Reaper Traversal Order" from zhongjinji makes a number of improvements in the OOM killer: mainly thawing a more appropriate group of victim threads so they can release resources - "mm/damon: misc fixups and improvements for 6.18" from SeongJae Park is a bunch of small and unrelated fixups for DAMON - "mm/damon: define and use DAMON initialization check function" from SeongJae Park implement reliability and maintainability improvements to a recently-added bug fix - "mm/damon/stat: expose auto-tuned intervals and non-idle ages" from SeongJae Park provides additional transparency to userspace clients of the DAMON_STAT information - "Expand scope of khugepaged anonymous collapse" from Dev Jain removes some constraints on khubepaged's collapsing of anon VMAs. It also increases the success rate of MADV_COLLAPSE against an anon vma - "mm: do not assume file == vma->vm_file in compat_vma_mmap_prepare()" from Lorenzo Stoakes moves us further towards removal of file_operations.mmap(). This patchset concentrates upon clearing up the treatment of stacked filesystems - "mm: Improve mlock tracking for large folios" from Kiryl Shutsemau provides some fixes and improvements to mlock's tracking of large folios. /proc/meminfo's "Mlocked" field became more accurate - "mm/ksm: Fix incorrect accounting of KSM counters during fork" from Donet Tom fixes several user-visible KSM stats inaccuracies across forks and adds selftest code to verify these counters - "mm_slot: fix the usage of mm_slot_entry" from Wei Yang addresses some potential but presently benign issues in KSM's mm_slot handling * tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (372 commits) mm: swap: check for stable address space before operating on the VMA mm: convert folio_page() back to a macro mm/khugepaged: use start_addr/addr for improved readability hugetlbfs: skip VMAs without shareable locks in hugetlb_vmdelete_list alloc_tag: fix boot failure due to NULL pointer dereference mm: silence data-race in update_hiwater_rss mm/memory-failure: don't select MEMORY_ISOLATION mm/khugepaged: remove definition of struct khugepaged_mm_slot mm/ksm: get mm_slot by mm_slot_entry() when slot is !NULL hugetlb: increase number of reserving hugepages via cmdline selftests/mm: add fork inheritance test for ksm_merging_pages counter mm/ksm: fix incorrect KSM counter handling in mm_struct during fork drivers/base/node: fix double free in register_one_node() mm: remove PMD alignment constraint in execmem_vmalloc() mm/memory_hotplug: fix typo 'esecially' -> 'especially' mm/rmap: improve mlock tracking for large folios mm/filemap: map entire large folio faultaround mm/fault: try to map the entire file folio in finish_fault() mm/rmap: mlock large folios in try_to_unmap_one() mm/rmap: fix a mlock race condition in folio_referenced_one() ... |
||
|
Linus Torvalds
|
07fdad3a93 |
Networking changes for 6.18.
Core & protocols
----------------
- Improve drop account scalability on NUMA hosts for RAW and UDP sockets
and the backlog, almost doubling the Pps capacity under DoS.
- Optimize the UDP RX performance under stress, reducing contention,
revisiting the binary layout of the involved data structs and
implementing NUMA-aware locking. This improves UDP RX performance by
an additional 50%, even more under extreme conditions.
- Add support for PSP encryption of TCP connections; this mechanism has
some similarities with IPsec and TLS, but offers superior HW offloads
capabilities.
- Ongoing work to support Accurate ECN for TCP. AccECN allows more than
one congestion notification signal per RTT and is a building block for
Low Latency, Low Loss, and Scalable Throughput (L4S).
- Reorganize the TCP socket binary layout for data locality, reducing
the number of touched cachelines in the fastpath.
- Refactor skb deferral free to better scale on large multi-NUMA hosts,
this improves TCP and UDP RX performances significantly on such HW.
- Increase the default socket memory buffer limits from 256K to 4M to
better fit modern link speeds.
- Improve handling of setups with a large number of nexthop, making dump
operating scaling linearly and avoiding unneeded synchronize_rcu() on
delete.
- Improve bridge handling of VLAN FDB, storing a single entry per bridge
instead of one entry per port; this makes the dump order of magnitude
faster on large switches.
- Restore IP ID correctly for encapsulated packets at GSO segmentation
time, allowing GRO to merge packets in more scenarios.
- Improve netfilter matching performance on large sets.
- Improve MPTCP receive path performance by leveraging recently
introduced core infrastructure (skb deferral free) and adopting recent
TCP autotuning changes.
- Allow bridges to redirect to a backup port when the bridge port is
administratively down.
- Introduce MPTCP 'laminar' endpoint that con be used only once per
connection and simplify common MPTCP setups.
- Add RCU safety to dst->dev, closing a lot of possible races.
- A significant crypto library API for SCTP, MPTCP and IPv6 SR, reducing
code duplication.
- Supports pulling data from an skb frag into the linear area of an XDP
buffer.
Things we sprinkled into general kernel code
--------------------------------------------
- Generate netlink documentation from YAML using an integrated
YAML parser.
Driver API
----------
- Support using IPv6 Flow Label in Rx hash computation and RSS queue
selection.
- Introduce API for fetching the DMA device for a given queue, allowing
TCP zerocopy RX on more H/W setups.
- Make XDP helpers compatible with unreadable memory, allowing more
easily building DevMem-enabled drivers with a unified XDP/skbs
datapath.
- Add a new dedicated ethtool callback enabling drivers to provide the
number of RX rings directly, improving efficiency and clarity in RX
ring queries and RSS configuration.
- Introduce a burst period for the health reporter, allowing better
handling of multiple errors due to the same root cause.
- Support for DPLL phase offset exponential moving average, controlling
the average smoothing factor.
Device drivers
--------------
- Add a new Huawei driver for 3rd gen NIC (hinic3).
- Add a new SpacemiT driver for K1 ethernet MAC.
- Add a generic abstraction for shared memory communication devices
(dibps)
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- Use multiple per-queue doorbell, to avoid MMIO contention issues
- support adjacent functions, allowing them to delegate their
SR-IOV VFs to sibling PFs
- support RSS for IPSec offload
- support exposing raw cycle counters in PTP and mlx5
- support for disabling host PFs.
- Intel (100G, ice, idpf):
- ice: support for SRIOV VFs over an Active-Active link aggregate
- ice: support for firmware logging via debugfs
- ice: support for Earliest TxTime First (ETF) hardware offload
- idpf: support basic XDP functionalities and XSk
- Broadcom (bnxt):
- support Hyper-V VF ID
- dynamic SRIOV resource allocations for RoCE
- Meta (fbnic):
- support queue API, zero-copy Rx and Tx
- support basic XDP functionalities
- devlink health support for FW crashes and OTP mem corruptions
- expand hardware stats coverage to FEC, PHY, and Pause
- Wangxun:
- support ethtool coalesce options
- support for multiple RSS contexts
- Ethernet virtual:
- Macsec:
- replace custom netlink attribute checks with policy-level checks
- Bonding:
- support aggregator selection based on port priority
- Microsoft vNIC:
- use page pool fragments for RX buffers instead of full pages to
improve memory efficiency
- Ethernet NICs consumer, and embedded:
- Qualcomm: support Ethernet function for IPQ9574 SoC
- Airoha: implement wlan offloading via NPU
- Freescale
- enetc: add NETC timer PTP driver and add PTP support
- fec: enable the Jumbo frame support for i.MX8QM
- Renesas (R-Car S4): support HW offloading for layer 2 switching
- support for RZ/{T2H, N2H} SoCs
- Cadence (macb): support TAPRIO traffic scheduling
- TI:
- support for Gigabit ICSS ethernet SoC (icssm-prueth)
- Synopsys (stmmac): a lot of cleanups
- Ethernet PHYs:
- Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
driver
- Support bcm63268 GPHY power control
- Support for Micrel lan8842 PHY and PTP
- Support for Aquantia AQR412 and AQR115
- CAN:
- a large CAN-XL preparation work
- reorganize raw_sock and uniqframe struct to minimize memory usage
- rcar_canfd: update the CAN-FD handling
- WiFi:
- extended Neighbor Awareness Networking (NAN) support
- S1G channel representation cleanup
- improve S1G support
- WiFi drivers:
- Intel (iwlwifi):
- major refactor and cleanup
- Broadcom (brcm80211):
- support for AP isolation
- RealTek (rtw88/89) rtw88/89:
- preparation work for RTL8922DE support
- MediaTek (mt76):
- HW restart improvements
- MLO support
- Qualcomm/Atheros (ath10k_
- GTK rekey fixes
- Bluetooth drivers:
- btusb: support for several new IDs for MT7925
- btintel: support for BlazarIW core
- btintel_pcie: support for _suspend() / _resume()
- btintel_pcie: support for Scorpious, Panther Lake-H484 IDs
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core & protocols:
- Improve drop account scalability on NUMA hosts for RAW and UDP
sockets and the backlog, almost doubling the Pps capacity under DoS
- Optimize the UDP RX performance under stress, reducing contention,
revisiting the binary layout of the involved data structs and
implementing NUMA-aware locking. This improves UDP RX performance
by an additional 50%, even more under extreme conditions
- Add support for PSP encryption of TCP connections; this mechanism
has some similarities with IPsec and TLS, but offers superior HW
offloads capabilities
- Ongoing work to support Accurate ECN for TCP. AccECN allows more
than one congestion notification signal per RTT and is a building
block for Low Latency, Low Loss, and Scalable Throughput (L4S)
- Reorganize the TCP socket binary layout for data locality, reducing
the number of touched cachelines in the fastpath
- Refactor skb deferral free to better scale on large multi-NUMA
hosts, this improves TCP and UDP RX performances significantly on
such HW
- Increase the default socket memory buffer limits from 256K to 4M to
better fit modern link speeds
- Improve handling of setups with a large number of nexthop, making
dump operating scaling linearly and avoiding unneeded
synchronize_rcu() on delete
- Improve bridge handling of VLAN FDB, storing a single entry per
bridge instead of one entry per port; this makes the dump order of
magnitude faster on large switches
- Restore IP ID correctly for encapsulated packets at GSO
segmentation time, allowing GRO to merge packets in more scenarios
- Improve netfilter matching performance on large sets
- Improve MPTCP receive path performance by leveraging recently
introduced core infrastructure (skb deferral free) and adopting
recent TCP autotuning changes
- Allow bridges to redirect to a backup port when the bridge port is
administratively down
- Introduce MPTCP 'laminar' endpoint that con be used only once per
connection and simplify common MPTCP setups
- Add RCU safety to dst->dev, closing a lot of possible races
- A significant crypto library API for SCTP, MPTCP and IPv6 SR,
reducing code duplication
- Supports pulling data from an skb frag into the linear area of an
XDP buffer
Things we sprinkled into general kernel code:
- Generate netlink documentation from YAML using an integrated YAML
parser
Driver API:
- Support using IPv6 Flow Label in Rx hash computation and RSS queue
selection
- Introduce API for fetching the DMA device for a given queue,
allowing TCP zerocopy RX on more H/W setups
- Make XDP helpers compatible with unreadable memory, allowing more
easily building DevMem-enabled drivers with a unified XDP/skbs
datapath
- Add a new dedicated ethtool callback enabling drivers to provide
the number of RX rings directly, improving efficiency and clarity
in RX ring queries and RSS configuration
- Introduce a burst period for the health reporter, allowing better
handling of multiple errors due to the same root cause
- Support for DPLL phase offset exponential moving average,
controlling the average smoothing factor
Device drivers:
- Add a new Huawei driver for 3rd gen NIC (hinic3)
- Add a new SpacemiT driver for K1 ethernet MAC
- Add a generic abstraction for shared memory communication
devices (dibps)
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- Use multiple per-queue doorbell, to avoid MMIO contention
issues
- support adjacent functions, allowing them to delegate their
SR-IOV VFs to sibling PFs
- support RSS for IPSec offload
- support exposing raw cycle counters in PTP and mlx5
- support for disabling host PFs.
- Intel (100G, ice, idpf):
- ice: support for SRIOV VFs over an Active-Active link
aggregate
- ice: support for firmware logging via debugfs
- ice: support for Earliest TxTime First (ETF) hardware offload
- idpf: support basic XDP functionalities and XSk
- Broadcom (bnxt):
- support Hyper-V VF ID
- dynamic SRIOV resource allocations for RoCE
- Meta (fbnic):
- support queue API, zero-copy Rx and Tx
- support basic XDP functionalities
- devlink health support for FW crashes and OTP mem corruptions
- expand hardware stats coverage to FEC, PHY, and Pause
- Wangxun:
- support ethtool coalesce options
- support for multiple RSS contexts
- Ethernet virtual:
- Macsec:
- replace custom netlink attribute checks with policy-level
checks
- Bonding:
- support aggregator selection based on port priority
- Microsoft vNIC:
- use page pool fragments for RX buffers instead of full pages
to improve memory efficiency
- Ethernet NICs consumer, and embedded:
- Qualcomm: support Ethernet function for IPQ9574 SoC
- Airoha: implement wlan offloading via NPU
- Freescale
- enetc: add NETC timer PTP driver and add PTP support
- fec: enable the Jumbo frame support for i.MX8QM
- Renesas (R-Car S4):
- support HW offloading for layer 2 switching
- support for RZ/{T2H, N2H} SoCs
- Cadence (macb): support TAPRIO traffic scheduling
- TI:
- support for Gigabit ICSS ethernet SoC (icssm-prueth)
- Synopsys (stmmac): a lot of cleanups
- Ethernet PHYs:
- Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
driver
- Support bcm63268 GPHY power control
- Support for Micrel lan8842 PHY and PTP
- Support for Aquantia AQR412 and AQR115
- CAN:
- a large CAN-XL preparation work
- reorganize raw_sock and uniqframe struct to minimize memory
usage
- rcar_canfd: update the CAN-FD handling
- WiFi:
- extended Neighbor Awareness Networking (NAN) support
- S1G channel representation cleanup
- improve S1G support
- WiFi drivers:
- Intel (iwlwifi):
- major refactor and cleanup
- Broadcom (brcm80211):
- support for AP isolation
- RealTek (rtw88/89) rtw88/89:
- preparation work for RTL8922DE support
- MediaTek (mt76):
- HW restart improvements
- MLO support
- Qualcomm/Atheros (ath10k):
- GTK rekey fixes
- Bluetooth drivers:
- btusb: support for several new IDs for MT7925
- btintel: support for BlazarIW core
- btintel_pcie: support for _suspend() / _resume()
- btintel_pcie: support for Scorpious, Panther Lake-H484 IDs"
* tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits)
net: stmmac: Add support for Allwinner A523 GMAC200
dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible
Revert "Documentation: net: add flow control guide and document ethtool API"
octeontx2-pf: fix bitmap leak
octeontx2-vf: fix bitmap leak
net/mlx5e: Use extack in set rxfh callback
net/mlx5e: Introduce mlx5e_rss_params for RSS configuration
net/mlx5e: Introduce mlx5e_rss_init_params
net/mlx5e: Remove unused mdev param from RSS indir init
net/mlx5: Improve QoS error messages with actual depth values
net/mlx5e: Prevent entering switchdev mode with inconsistent netns
net/mlx5: HWS, Generalize complex matchers
net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
selftests/net: add tcp_port_share to .gitignore
Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"
net: add NUMA awareness to skb_attempt_defer_free()
net: use llist for sd->defer_list
net: make softnet_data.defer_count an atomic
selftests: drv-net: psp: add tests for destroying devices
selftests: drv-net: psp: add test for auto-adjusting TCP MSS
...
|
||
|
Linus Torvalds
|
f79e772258 |
[GIT PULL for v6.18] media updates
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||
|
Linus Torvalds
|
e1b1d03cee |
for-6.18/block-20250929
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Merge tag 'for-6.18/block-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- NVMe pull request via Keith:
- FC target fixes (Daniel)
- Authentication fixes and updates (Martin, Chris)
- Admin controller handling (Kamaljit)
- Target lockdep assertions (Max)
- Keep-alive updates for discovery (Alastair)
- Suspend quirk (Georg)
- MD pull request via Yu:
- Add support for a lockless bitmap.
A key feature for the new bitmap are that the IO fastpath is
lockless. If a user issues lots of write IO to the same bitmap
bit in a short time, only the first write has additional overhead
to update bitmap bit, no additional overhead for the following
writes.
By supporting only resync or recover written data, means in the
case creating new array or replacing with a new disk, there is no
need to do a full disk resync/recovery.
- Switch ->getgeo() and ->bios_param() to using struct gendisk rather
than struct block_device.
- Rust block changes via Andreas. This series adds configuration via
configfs and remote completion to the rnull driver. The series also
includes a set of changes to the rust block device driver API: a few
cleanup patches, and a few features supporting the rnull changes.
The series removes the raw buffer formatting logic from
`kernel::block` and improves the logic available in `kernel::string`
to support the same use as the removed logic.
- floppy arch cleanups
- Reduce the number of dereferencing needed for ublk commands
- Restrict supported sockets for nbd. Mostly done to eliminate a class
of issues perpetually reported by syzbot, by using nonsensical socket
setups.
- A few s390 dasd block fixes
- Fix a few issues around atomic writes
- Improve DMA interation for integrity requests
- Improve how iovecs are treated with regards to O_DIRECT aligment
constraints.
We used to require each segment to adhere to the constraints, now
only the request as a whole needs to.
- Clean up and improve p2p support, enabling use of p2p for metadata
payloads
- Improve locking of request lookup, using SRCU where appropriate
- Use page references properly for brd, avoiding very long RCU sections
- Fix ordering of recursively submitted IOs
- Clean up and improve updating nr_requests for a live device
- Various fixes and cleanups
* tag 'for-6.18/block-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (164 commits)
s390/dasd: enforce dma_alignment to ensure proper buffer validation
s390/dasd: Return BLK_STS_INVAL for EINVAL from do_dasd_request
ublk: remove redundant zone op check in ublk_setup_iod()
nvme: Use non zero KATO for persistent discovery connections
nvmet: add safety check for subsys lock
nvme-core: use nvme_is_io_ctrl() for I/O controller check
nvme-core: do ioccsz/iorcsz validation only for I/O controllers
nvme-core: add method to check for an I/O controller
blk-cgroup: fix possible deadlock while configuring policy
blk-mq: fix null-ptr-deref in blk_mq_free_tags() from error path
blk-mq: Fix more tag iteration function documentation
selftests: ublk: fix behavior when fio is not installed
ublk: don't access ublk_queue in ublk_unmap_io()
ublk: pass ublk_io to __ublk_complete_rq()
ublk: don't access ublk_queue in ublk_need_complete_req()
ublk: don't access ublk_queue in ublk_check_commit_and_fetch()
ublk: don't pass ublk_queue to ublk_fetch()
ublk: don't access ublk_queue in ublk_config_io_buf()
ublk: don't access ublk_queue in ublk_check_fetch_buf()
ublk: pass q_id and tag to __ublk_check_and_get_req()
...
|
||
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Rafael J. Wysocki
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950c6451a5 |
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
Drop CPUFREQ_ETERNAL that has no users any more along with all references to it in the documentation. No functional impact. Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Reviewed-by: Jie Zhan <zhanjie9@hisilicon.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Qais Yousef <qyousef@layalina.io> |
||
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Linus Torvalds
|
3b2074c77d |
A set of updates for the interrupt core subsystem:
- Introduce irq_chip_[startup|shutdown]_parent() to prepare for
addressing a few short comings in the PCI/MSI interrupt subsystem.
It allows to utilize the interrupt chip startup/shutdown callbacks for
initializing the interrupt chip hierarchy properly on certain RISCV
implementations and provides a mechanism to reduce the overhead of
masking and unmasking PCI/MSI interrupts during operation when the
underlying MSI provider can mask the interrupt.
The actual usage comes with the interrupt driver pull request.
- Add generic error handling for devm_request_*_irq()
This allows to remove the zoo of random error printk's all over the
usage sites.
- Add a mechanism to warn about long-running interrupt handlers
Long running interrupt handlers can introduce latencies and tracking
them down is a tedious task. The tracking has to be enabled with a
threshold on the kernel command line and utilizes a static branch to
remove the overhead when disabled.
- Update and extend the selftests which validate the CPU hotplug
interrupt migration logic
- Allow dropping the per CPU softirq lock on PREEMPT_RT kernels, which
causes contention and latencies all over the place.
The serialization requirements have been pushed down into the actual
affected usage sites already.
- The usual small cleanups and improvements
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Merge tag 'irq-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
"A set of updates for the interrupt core subsystem:
- Introduce irq_chip_[startup|shutdown]_parent() to prepare for
addressing a few short comings in the PCI/MSI interrupt subsystem.
It allows to utilize the interrupt chip startup/shutdown callbacks
for initializing the interrupt chip hierarchy properly on certain
RISCV implementations and provides a mechanism to reduce the
overhead of masking and unmasking PCI/MSI interrupts during
operation when the underlying MSI provider can mask the interrupt.
The actual usage comes with the interrupt driver pull request.
- Add generic error handling for devm_request_*_irq()
This allows to remove the zoo of random error printk's all over the
usage sites.
- Add a mechanism to warn about long-running interrupt handlers
Long running interrupt handlers can introduce latencies and
tracking them down is a tedious task. The tracking has to be
enabled with a threshold on the kernel command line and utilizes a
static branch to remove the overhead when disabled.
- Update and extend the selftests which validate the CPU hotplug
interrupt migration logic
- Allow dropping the per CPU softirq lock on PREEMPT_RT kernels,
which causes contention and latencies all over the place.
The serialization requirements have been pushed down into the
actual affected usage sites already.
- The usual small cleanups and improvements"
* tag 'irq-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
softirq: Allow to drop the softirq-BKL lock on PREEMPT_RT
softirq: Provide a handshake for canceling tasklets via polling
genirq/test: Ensure CPU 1 is online for hotplug test
genirq/test: Drop CONFIG_GENERIC_IRQ_MIGRATION assumptions
genirq/test: Depend on SPARSE_IRQ
genirq/test: Fail early if interrupt request fails
genirq/test: Factor out fake-virq setup
genirq/test: Select IRQ_DOMAIN
genirq/test: Fix depth tests on architectures with NOREQUEST by default.
genirq: Add support for warning on long-running interrupt handlers
genirq/devres: Add error handling in devm_request_*_irq()
genirq: Add irq_chip_(startup/shutdown)_parent()
genirq: Remove GENERIC_IRQ_LEGACY
|
||
|
Linus Torvalds
|
2cb8eeaf00 |
- Add support on AMD for assigning QOS bandwidth counters to resources
(RMIDs) with the ability for those resources to be tracked by the counters as long as they're assigned to them. Previously, due to hw limitations, bandwidth counts from untracked resources would get lost when those resources are not tracked. Refactor the code and user interfaces to be able to also support other, similar features on ARM, for example -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmjWZ+cACgkQEsHwGGHe VUoRrRAAjy/bn0gQCJPPySUfUa7rTG/qiriI6Ax9tc09X8ahspeUQ0IHCK1RWNwm tpzbsrTQImA8AeBkNbnD6ALKGSZdfL1l0hMZkKr1Htg35JoHSDMIalxab+sYCfg8 cysw0tmEKQce1wC8PtP4iX6ENbci4thS6td/t8rWcWTg1ndfOF9eTKHtZvZ/W0Qr zJ8MnBIqNhPMV0VEUxacmLuqPGnyWuXyIXzX9nHTc3fjSzTc94jqIB20wFBRFPAx EVFivq/mpu3uXXvvumuZZzXuqgBTIMMx2KjABw+5LNU9BIvkzoFwYZvRlUoU9es8 ASSBddt2jvYyHLal8MUXYieIHJAESKOe2apxtP74ZJIR0t7pUswobPyYO0GEseuQ +H2QbLlmJGNO3kJZUuSUGZ9yfjW4JsqM5UlowlVoHGvAOXIW+wR6r1tbdErfima9 rkqwUCzCXJg3UJ+a6xrK7hhc7QsbIHoo8mHBD+q5I1Hoipwoqe7j6YV80Oely/IC Gy3mFQ3e/KwRplfO7qHT88sfAAh+J+TmsVQTHlM62wrnjQOOPcMm7r9m0A2eTOme 7ZlvcU2q9nAJBaA8ylXbBt4l2AcFKaJg8btskWiZLAXGIjAb6B+5uepmwPRavY5Q NdiVa3pk7vGDl9oJ2DJIFKbq3adr50TCCarUM0304s3BsQvKnX4= =2FMs -----END PGP SIGNATURE----- Merge tag 'x86_cache_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 resource control updates from Borislav Petkov: "Add support on AMD for assigning QoS bandwidth counters to resources (RMIDs) with the ability for those resources to be tracked by the counters as long as they're assigned to them. Previously, due to hw limitations, bandwidth counts from untracked resources would get lost when those resources are not tracked. Refactor the code and user interfaces to be able to also support other, similar features on ARM, for example" * tag 'x86_cache_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits) fs/resctrl: Fix counter auto-assignment on mkdir with mbm_event enabled MAINTAINERS: resctrl: Add myself as reviewer x86/resctrl: Configure mbm_event mode if supported fs/resctrl: Introduce the interface to switch between monitor modes fs/resctrl: Disable BMEC event configuration when mbm_event mode is enabled fs/resctrl: Introduce the interface to modify assignments in a group fs/resctrl: Introduce mbm_L3_assignments to list assignments in a group fs/resctrl: Auto assign counters on mkdir and clean up on group removal fs/resctrl: Introduce mbm_assign_on_mkdir to enable assignments on mkdir fs/resctrl: Provide interface to update the event configurations fs/resctrl: Add event configuration directory under info/L3_MON/ fs/resctrl: Support counter read/reset with mbm_event assignment mode x86/resctrl: Implement resctrl_arch_reset_cntr() and resctrl_arch_cntr_read() x86/resctrl: Refactor resctrl_arch_rmid_read() fs/resctrl: Introduce counter ID read, reset calls in mbm_event mode fs/resctrl: Pass struct rdtgroup instead of individual members fs/resctrl: Add the functionality to unassign MBM events fs/resctrl: Add the functionality to assign MBM events x86,fs/resctrl: Implement resctrl_arch_config_cntr() to assign a counter with ABMC fs/resctrl: Introduce event configuration field in struct mon_evt ... |
||
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Linus Torvalds
|
d7ec0cf1cd |
- Add VMSCAPE to the attack vector controls infrastructure
- A bunch of the usual cleanups and fixlets, some of them resulting from fuzzing the different mitigation options -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmjWZqMACgkQEsHwGGHe VUrMvA//dT7J2fiKEYrKa2MSMAG9/4hvLGehiyjPdlSuMVjgrpNK6+gvYBWWSkO8 OO2rfx7a3dWZ78qG7dSgk3hnC3X+t0BS3fLq0s2Nu35oITD6TC0nOkETg6xVePqW mvYWnqG6CqtNEDIjm7lbUZ5ChjeWdjjBXiYhIu4w1Ev1c1GTcBT02fshd5r+ZsRE hcXzh5w50T5ZyOwOtdiv9I8oSXcrg4cjEExZCSefjd0h5Xd0s9SUXyk9PgBzjTAX QY6liuzg99YPQ+oCv65gNxfhIfrB9WGuWt2RkGtdFn6hOE+3x5fWuxGXeCKI15GM SWrxwIJeTqksSviL8kdTJ5IXLpmVJRGAJeX5rjPHc1CDMHGyeiPqJpZTUqeHUTi/ hOGrgs+zvPx9rzDKrORPoC3W9kOV5Z1xF3igFQyVDuS2ctbIqlwoz5618oSveTAM XaQik8oFNJJxpNA4LXe8meYQWa6BF0wfLD9i2jAio5iQpkrvzbrvm6UpVRqkuZbY EHi0K2QD6RwRbICqbPuUh/lJA7a6NtLUYyC4HMctYw/7VmTHxaNo9Zod3yutKfHr 7xM7T9g1iS9oo2o316Q5n1m0SuXmp58Y/GEUmxaO8WwbLCMoQt7Iicx1CqeVsgKP Ws6GZJ6UXzzW8aBmxa0OHB8xviOPYh4v4V7el41Uitw0XqERqdM= =ALng -----END PGP SIGNATURE----- Merge tag 'x86_bugs_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mitigation updates from Borislav Petkov: - Add VMSCAPE to the attack vector controls infrastructure - A bunch of the usual cleanups and fixlets, some of them resulting from fuzzing the different mitigation options * tag 'x86_bugs_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Report correct retbleed mitigation status x86/bugs: Fix reporting of LFENCE retpoline x86/bugs: Fix spectre_v2 forcing x86/bugs: Remove uses of cpu_mitigations_off() x86/bugs: Simplify SSB cmdline parsing x86/bugs: Use early_param() for spectre_v2 x86/bugs: Use early_param() for spectre_v2_user x86/bugs: Add attack vector controls for VMSCAPE x86/its: Move ITS indirect branch thunks to .text..__x86.indirect_thunk |
||
|
Linus Torvalds
|
bd91417a96 |
- Add infrastructure to be able to debug the microcode loader in a guest
- Refresh Intel old microcode revisions -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmjWZagACgkQEsHwGGHe VUp6IRAAo2g06L8UduzPiUcD46ZV218Z3O8ydrrm4FlJBvq/sm0SBx0u6MES9I84 RrXSKfPbR8ds/ony44dX/o6/ztckAnTw6Mh7/Np43syjsF+9aRNcdeQ0CevD5f1a JdTdfcEtL1FikFPo250GfUTE8HsuqYxkRIW6VYnHaA3FO7SFJ2StyewKYfS7IYfg JN5JM4It9JEQZ0vwZM9GJjvycypDXLFJ0rYoY0Zqkumlx0w8Q1mzafbPuL3129L9 7RO5uJ5aEZPAzVgnpzG5gd/T+xMovfZwkpw7wYDmB+ftML7C4Hvq4BRkT6As9OAD j39RfPyXJsMmF5TEUBrwQ8vGNVrwvALl+dLZZMb4CEz9OryeYNJHP0GzFZnivYvi i0pPUzUNHe7Ex8a4m7XZjDRYSl+RSm13EowuM5uMViRwzTbmT+Rya0EsoybsNXOo vQnXRS74cwr5DVI+A6hnE9r0hR0c+TaHbDAAKJQkja6WXFi7Gr18VZyOASrl0w29 bQ6SDtY9UeV1oNVcnGNRo1DREoWURGbG54M7YIOqhbQNIE4ezgxfrXijGSHYIHED sotvcAeb8NPIqjbPsjZ5kD3aNzl3PkW13d2zjikxht0wCyKui390qUcm3qCAmBug s25imHvGLu4sXWqztoNLeq3o4dp9CtKXaHgni9WlQyBHIpIhH54= =mxlm -----END PGP SIGNATURE----- Merge tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 microcode loading updates from Borislav Petkov: - Add infrastructure to be able to debug the microcode loader in a guest - Refresh Intel old microcode revisions * tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode: Add microcode loader debugging functionality x86/microcode: Add microcode= cmdline parsing x86/microcode/intel: Refresh the revisions that determine old_microcode |
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Paolo Bonzini
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10ef74c06b |
KVM SEV-SNP CipherText Hiding support for 6.18
Add support for SEV-SNP's CipherText Hiding, an opt-in feature that prevents unauthorized CPU accesses from reading the ciphertext of SNP guest private memory, e.g. to attempt an offline attack. Instead of ciphertext, the CPU will always read back all FFs when CipherText Hiding is enabled. Add new module parameter to the KVM module to enable CipherText Hiding and control the number of ASIDs that can be used for VMs with CipherText Hiding, which is in effect the number of SNP VMs. When CipherText Hiding is enabled, the hared SEV-ES/SEV-SNP ASID space is split into separate ranges for SEV-ES and SEV-SNP guests, i.e. ASIDs that can be used for CipherText Hiding cannot be used to run SEV-ES guests. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAmjXG0EACgkQOlYIJqCj N/1TKQ//UlPcGwoR9cl9V5YRz0b+wNOHNh7JqOTdQsEa00qqIXaAnK+M77Jynvmj YqnQbFCxnQS2pQWkSKv3eJ9Kc9ndTBA7+lL3rrHot6ccks3xM0cHe8Bquu8Of/Ht 1qla1OazrYjJBjFdYCzO+ZQdUvSNAr5RkOPO1KrnHZPELPOQt0+LbxlewRRbKHIj hea8KgmRqmlRJYDJlOGh+G/FFDCFqaeXyOfEkeBuYyCAL60r+0IMHKMwrwlDx/1+ Kzlrf65YuMZlgg7AjhA2mXj4DvlSQkPnMkmkNmNgPXI1XNgHDS/7M1f2m/QbgGV8 Y1D1/GY5u5YD30zDHCmmqPocs5sxrsVoAH8cHalMQsiDlr/HfoKlQ+w0aHEQnHFJ j4GnfCIkyx77tPHeS8e8RJk8qXs+0Bf2bzOAQkv0f/k6JaWhiLzISTFOTyztaf8v m7gPWJORWGZyWVBk+Ad+KGh5Ww2o+sY3aufp81JBT12kC17G0xsHrO1XvUV6YDQ7 wSINQap0TQFY2Lh9Vr1GDNx4jk+YnQOjqKbqd6efyv8No4+j75eaCkbAItma9YVc EPGYa+LaRoC58f7LIChT0uXTAkK7lgdAuGwice7CPsRTjPJqxneIL7u6ohO9jAkz EysFgzsozLynnVUPmXqf5SDots1G5RrAne8Bj+6tLaGxCjW+lLI= =mc41 -----END PGP SIGNATURE----- Merge tag 'kvm-x86-ciphertext-6.18' of https://github.com/kvm-x86/linux into HEAD KVM SEV-SNP CipherText Hiding support for 6.18 Add support for SEV-SNP's CipherText Hiding, an opt-in feature that prevents unauthorized CPU accesses from reading the ciphertext of SNP guest private memory, e.g. to attempt an offline attack. Instead of ciphertext, the CPU will always read back all FFs when CipherText Hiding is enabled. Add new module parameter to the KVM module to enable CipherText Hiding and control the number of ASIDs that can be used for VMs with CipherText Hiding, which is in effect the number of SNP VMs. When CipherText Hiding is enabled, the shared SEV-ES/SEV-SNP ASID space is split into separate ranges for SEV-ES and SEV-SNP guests, i.e. ASIDs that can be used for CipherText Hiding cannot be used to run SEV-ES guests. |
||
|
Linus Torvalds
|
755fa5b4fb |
cgroup: Changes for v6.18
- Extensive cpuset code cleanup and refactoring work with no functional changes: CPU mask computation logic refactoring, introducing new helpers, removing redundant code paths, and improving error handling for better maintainability. - A few bug fixes to cpuset including fixes for partition creation failures when isolcpus is in use, missing error returns, and null pointer access prevention in free_tmpmasks(). - Core cgroup changes include replacing the global percpu_rwsem with per-threadgroup rwsem when writing to cgroup.procs for better scalability, workqueue conversions to use WQ_PERCPU and system_percpu_wq to prepare for workqueue default switching from percpu to unbound, and removal of unused code including the post_attach callback. - New cgroup.stat.local time accounting feature that tracks frozen time duration. - Misc changes including selftests updates (new freezer time tests and backward compatibility fixes), documentation sync, string function safety improvements, and 64-bit division fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaNb1Sg4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGfLMAPwKwkvUg9DPJEuECRfM9woOOHyIWLp1DwUhpg1v Zq0lkAEAmo/+IkJXGZ7TGF+wzSj7GFIugrILu3upzLCHzgYoDgs= =39KF -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Extensive cpuset code cleanup and refactoring work with no functional changes: CPU mask computation logic refactoring, introducing new helpers, removing redundant code paths, and improving error handling for better maintainability. - A few bug fixes to cpuset including fixes for partition creation failures when isolcpus is in use, missing error returns, and null pointer access prevention in free_tmpmasks(). - Core cgroup changes include replacing the global percpu_rwsem with per-threadgroup rwsem when writing to cgroup.procs for better scalability, workqueue conversions to use WQ_PERCPU and system_percpu_wq to prepare for workqueue default switching from percpu to unbound, and removal of unused code including the post_attach callback. - New cgroup.stat.local time accounting feature that tracks frozen time duration. - Misc changes including selftests updates (new freezer time tests and backward compatibility fixes), documentation sync, string function safety improvements, and 64-bit division fixes. * tag 'cgroup-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (39 commits) cpuset: remove is_prs_invalid helper cpuset: remove impossible warning in update_parent_effective_cpumask cpuset: remove redundant special case for null input in node mask update cpuset: fix missing error return in update_cpumask cpuset: Use new excpus for nocpu error check when enabling root partition cpuset: fix failure to enable isolated partition when containing isolcpus Documentation: cgroup-v2: Sync manual toctree cpuset: use partition_cpus_change for setting exclusive cpus cpuset: use parse_cpulist for setting cpus.exclusive cpuset: introduce partition_cpus_change cpuset: refactor cpus_allowed_validate_change cpuset: refactor out validate_partition cpuset: introduce cpus_excl_conflict and mems_excl_conflict helpers cpuset: refactor CPU mask buffer parsing logic cpuset: Refactor exclusive CPU mask computation logic cpuset: change return type of is_partition_[in]valid to bool cpuset: remove unused assignment to trialcs->partition_root_state cpuset: move the root cpuset write check earlier cgroup/cpuset: Remove redundant rcu_read_lock/unlock() in spin_lock cgroup: Remove redundant rcu_read_lock/unlock() in spin_lock ... |
||
|
Linus Torvalds
|
feafee2845 |
arm64 updates for 6.18
Confidential computing:
- Add support for accepting secrets from firmware (e.g. ACPI CCEL)
and mapping them with appropriate attributes.
CPU features:
- Advertise atomic floating-point instructions to userspace.
- Extend Spectre workarounds to cover additional Arm CPU variants.
- Extend list of CPUs that support break-before-make level 2 and
guarantee not to generate TLB conflict aborts for changes of mapping
granularity (BBML2_NOABORT).
- Add GCS support to our uprobes implementation.
Documentation:
- Remove bogus SME documentation concerning register state when
entering/exiting streaming mode.
Entry code:
- Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY).
- Micro-optimise syscall entry path with a compiler branch hint.
Memory management:
- Enable huge mappings in vmalloc space even when kernel page-table
dumping is enabled.
- Tidy up the types used in our early MMU setup code.
- Rework rodata= for closer parity with the behaviour on x86.
- For CPUs implementing BBML2_NOABORT, utilise block mappings in the
linear map even when rodata= applies to virtual aliases.
- Don't re-allocate the virtual region between '_text' and '_stext',
as doing so confused tools parsing /proc/vmcore.
Miscellaneous:
- Clean-up Kconfig menuconfig text for architecture features.
- Avoid redundant bitmap_empty() during determination of supported
SME vector lengths.
- Re-enable warnings when building the 32-bit vDSO object.
- Avoid breaking our eggs at the wrong end.
Perf and PMUs:
- Support for v3 of the Hisilicon L3C PMU.
- Support for Hisilicon's MN and NoC PMUs.
- Support for Fujitsu's Uncore PMU.
- Support for SPE's extended event filtering feature.
- Preparatory work to enable data source filtering in SPE.
- Support for multiple lanes in the DWC PCIe PMU.
- Support for i.MX94 in the IMX DDR PMU driver.
- MAINTAINERS update (Thank you, Yicong).
- Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).
Selftests:
- Add basic LSFE check to the existing hwcaps test.
- Support nolibc in GCS tests.
- Extend SVE ptrace test to pass unsupported regsets and invalid vector
lengths.
- Minor cleanups (typos, cosmetic changes).
System registers:
- Fix ID_PFR1_EL1 definition.
- Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1.
- Sync TCR_EL1 definition with the latest Arm ARM (L.b).
- Be stricter about the input fed into our AWK sysreg generator script.
- Typo fixes and removal of redundant definitions.
ACPI, EFI and PSCI:
- Decouple Arm's "Software Delegated Exception Interface" (SDEI)
support from the ACPI GHES code so that it can be used by platforms
booted with device-tree.
- Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
runtime calls.
- Fix a node refcount imbalance in the PSCI device-tree code.
CPU Features:
- Ensure register sanitisation is applied to fields in ID_AA64MMFR4.
- Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM guests
can reliably query the underlying CPU types from the VMM.
- Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
to our context-switching, signal handling and ptrace code.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's good stuff across the board, including some nice mm
improvements for CPUs with the 'noabort' BBML2 feature and a clever
patch to allow ptdump to play nicely with block mappings in the
vmalloc area.
Confidential computing:
- Add support for accepting secrets from firmware (e.g. ACPI CCEL)
and mapping them with appropriate attributes.
CPU features:
- Advertise atomic floating-point instructions to userspace
- Extend Spectre workarounds to cover additional Arm CPU variants
- Extend list of CPUs that support break-before-make level 2 and
guarantee not to generate TLB conflict aborts for changes of
mapping granularity (BBML2_NOABORT)
- Add GCS support to our uprobes implementation.
Documentation:
- Remove bogus SME documentation concerning register state when
entering/exiting streaming mode.
Entry code:
- Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY)
- Micro-optimise syscall entry path with a compiler branch hint.
Memory management:
- Enable huge mappings in vmalloc space even when kernel page-table
dumping is enabled
- Tidy up the types used in our early MMU setup code
- Rework rodata= for closer parity with the behaviour on x86
- For CPUs implementing BBML2_NOABORT, utilise block mappings in the
linear map even when rodata= applies to virtual aliases
- Don't re-allocate the virtual region between '_text' and '_stext',
as doing so confused tools parsing /proc/vmcore.
Miscellaneous:
- Clean-up Kconfig menuconfig text for architecture features
- Avoid redundant bitmap_empty() during determination of supported
SME vector lengths
- Re-enable warnings when building the 32-bit vDSO object
- Avoid breaking our eggs at the wrong end.
Perf and PMUs:
- Support for v3 of the Hisilicon L3C PMU
- Support for Hisilicon's MN and NoC PMUs
- Support for Fujitsu's Uncore PMU
- Support for SPE's extended event filtering feature
- Preparatory work to enable data source filtering in SPE
- Support for multiple lanes in the DWC PCIe PMU
- Support for i.MX94 in the IMX DDR PMU driver
- MAINTAINERS update (Thank you, Yicong)
- Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).
Selftests:
- Add basic LSFE check to the existing hwcaps test
- Support nolibc in GCS tests
- Extend SVE ptrace test to pass unsupported regsets and invalid
vector lengths
- Minor cleanups (typos, cosmetic changes).
System registers:
- Fix ID_PFR1_EL1 definition
- Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1
- Sync TCR_EL1 definition with the latest Arm ARM (L.b)
- Be stricter about the input fed into our AWK sysreg generator
script
- Typo fixes and removal of redundant definitions.
ACPI, EFI and PSCI:
- Decouple Arm's "Software Delegated Exception Interface" (SDEI)
support from the ACPI GHES code so that it can be used by platforms
booted with device-tree
- Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
runtime calls
- Fix a node refcount imbalance in the PSCI device-tree code.
CPU Features:
- Ensure register sanitisation is applied to fields in ID_AA64MMFR4
- Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM
guests can reliably query the underlying CPU types from the VMM
- Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
to our context-switching, signal handling and ptrace code"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
arm64: cpufeature: Remove duplicate asm/mmu.h header
arm64: Kconfig: Make CPU_BIG_ENDIAN depend on BROKEN
perf/dwc_pcie: Fix use of uninitialized variable
arm/syscalls: mark syscall invocation as likely in invoke_syscall
Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU
Documentation: hisi-pmu: Fix of minor format error
drivers/perf: hisi: Add support for L3C PMU v3
drivers/perf: hisi: Refactor the event configuration of L3C PMU
drivers/perf: hisi: Extend the field of tt_core
drivers/perf: hisi: Extract the event filter check of L3C PMU
drivers/perf: hisi: Simplify the probe process of each L3C PMU version
drivers/perf: hisi: Export hisi_uncore_pmu_isr()
drivers/perf: hisi: Relax the event ID check in the framework
perf: Fujitsu: Add the Uncore PMU driver
arm64: map [_text, _stext) virtual address range non-executable+read-only
arm64/sysreg: Update TCR_EL1 register
arm64: Enable vmalloc-huge with ptdump
arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list
arm64: errata: Apply workarounds for Neoverse-V3AE
arm64: cputype: Add Neoverse-V3AE definitions
...
|
||
|
Linus Torvalds
|
e445fba2d7 |
xfs: new code for 6.18
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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Merge tag 'xfs-merge-6.18' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Carlos Maiolino:
"For this merge window, there are really no new features, but there are
a few things worth to emphasize:
- Deprecated for years already, the (no)attr2 and (no)ikeep mount
options have been removed for good
- Several cleanups (specially from typedefs) and bug fixes
- Improvements made in the online repair reap calculations
- online fsck is now enabled by default"
* tag 'xfs-merge-6.18' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (53 commits)
xfs: rework datasync tracking and execution
xfs: rearrange code in xfs_inode_item_precommit
xfs: scrub: use kstrdup_const() for metapath scan setups
xfs: use bt_nr_sectors in xfs_dax_translate_range
xfs: track the number of blocks in each buftarg
xfs: constify xfs_errortag_random_default
xfs: improve default maximum number of open zones
xfs: improve zone statistics message
xfs: centralize error tag definitions
xfs: remove pointless externs in xfs_error.h
xfs: remove the expr argument to XFS_TEST_ERROR
xfs: remove xfs_errortag_set
xfs: remove xfs_errortag_get
xfs: move the XLOG_REG_ constants out of xfs_log_format.h
xfs: adjust the hint based zone allocation policy
xfs: refactor hint based zone allocation
fs: add an enum for number of life time hints
xfs: fix log CRC mismatches between i386 and other architectures
xfs: rename the old_crc variable in xlog_recover_process
xfs: remove the unused xfs_log_iovec_t typedef
...
|
||
|
Linus Torvalds
|
b7ce6fa90f |
vfs-6.18-rc1.misc
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Merge tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual selections of misc updates for this cycle.
Features:
- Add "initramfs_options" parameter to set initramfs mount options.
This allows to add specific mount options to the rootfs to e.g.,
limit the memory size
- Add RWF_NOSIGNAL flag for pwritev2()
Add RWF_NOSIGNAL flag for pwritev2. This flag prevents the SIGPIPE
signal from being raised when writing on disconnected pipes or
sockets. The flag is handled directly by the pipe filesystem and
converted to the existing MSG_NOSIGNAL flag for sockets
- Allow to pass pid namespace as procfs mount option
Ever since the introduction of pid namespaces, procfs has had very
implicit behaviour surrounding them (the pidns used by a procfs
mount is auto-selected based on the mounting process's active
pidns, and the pidns itself is basically hidden once the mount has
been constructed)
This implicit behaviour has historically meant that userspace was
required to do some special dances in order to configure the pidns
of a procfs mount as desired. Examples include:
* In order to bypass the mnt_too_revealing() check, Kubernetes
creates a procfs mount from an empty pidns so that user
namespaced containers can be nested (without this, the nested
containers would fail to mount procfs)
But this requires forking off a helper process because you cannot
just one-shot this using mount(2)
* Container runtimes in general need to fork into a container
before configuring its mounts, which can lead to security issues
in the case of shared-pidns containers (a privileged process in
the pidns can interact with your container runtime process)
While SUID_DUMP_DISABLE and user namespaces make this less of an
issue, the strict need for this due to a minor uAPI wart is kind
of unfortunate
Things would be much easier if there was a way for userspace to
just specify the pidns they want. So this pull request contains
changes to implement a new "pidns" argument which can be set
using fsconfig(2):
fsconfig(procfd, FSCONFIG_SET_FD, "pidns", NULL, nsfd);
fsconfig(procfd, FSCONFIG_SET_STRING, "pidns", "/proc/self/ns/pid", 0);
or classic mount(2) / mount(8):
// mount -t proc -o pidns=/proc/self/ns/pid proc /tmp/proc
mount("proc", "/tmp/proc", "proc", MS_..., "pidns=/proc/self/ns/pid");
Cleanups:
- Remove the last references to EXPORT_OP_ASYNC_LOCK
- Make file_remove_privs_flags() static
- Remove redundant __GFP_NOWARN when GFP_NOWAIT is used
- Use try_cmpxchg() in start_dir_add()
- Use try_cmpxchg() in sb_init_done_wq()
- Replace offsetof() with struct_size() in ioctl_file_dedupe_range()
- Remove vfs_ioctl() export
- Replace rwlock() with spinlock in epoll code as rwlock causes
priority inversion on preempt rt kernels
- Make ns_entries in fs/proc/namespaces const
- Use a switch() statement() in init_special_inode() just like we do
in may_open()
- Use struct_size() in dir_add() in the initramfs code
- Use str_plural() in rd_load_image()
- Replace strcpy() with strscpy() in find_link()
- Rename generic_delete_inode() to inode_just_drop() and
generic_drop_inode() to inode_generic_drop()
- Remove unused arguments from fcntl_{g,s}et_rw_hint()
Fixes:
- Document @name parameter for name_contains_dotdot() helper
- Fix spelling mistake
- Always return zero from replace_fd() instead of the file descriptor
number
- Limit the size for copy_file_range() in compat mode to prevent a
signed overflow
- Fix debugfs mount options not being applied
- Verify the inode mode when loading it from disk in minixfs
- Verify the inode mode when loading it from disk in cramfs
- Don't trigger automounts with RESOLVE_NO_XDEV
If openat2() was called with RESOLVE_NO_XDEV it didn't traverse
through automounts, but could still trigger them
- Add FL_RECLAIM flag to show_fl_flags() macro so it appears in
tracepoints
- Fix unused variable warning in rd_load_image() on s390
- Make INITRAMFS_PRESERVE_MTIME depend on BLK_DEV_INITRD
- Use ns_capable_noaudit() when determining net sysctl permissions
- Don't call path_put() under namespace semaphore in listmount() and
statmount()"
* tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
fcntl: trim arguments
listmount: don't call path_put() under namespace semaphore
statmount: don't call path_put() under namespace semaphore
pid: use ns_capable_noaudit() when determining net sysctl permissions
fs: rename generic_delete_inode() and generic_drop_inode()
init: INITRAMFS_PRESERVE_MTIME should depend on BLK_DEV_INITRD
initramfs: Replace strcpy() with strscpy() in find_link()
initrd: Use str_plural() in rd_load_image()
initramfs: Use struct_size() helper to improve dir_add()
initrd: Fix unused variable warning in rd_load_image() on s390
fs: use the switch statement in init_special_inode()
fs/proc/namespaces: make ns_entries const
filelock: add FL_RECLAIM to show_fl_flags() macro
eventpoll: Replace rwlock with spinlock
selftests/proc: add tests for new pidns APIs
procfs: add "pidns" mount option
pidns: move is-ancestor logic to helper
openat2: don't trigger automounts with RESOLVE_NO_XDEV
namei: move cross-device check to __traverse_mounts
namei: remove LOOKUP_NO_XDEV check from handle_mounts
...
|
||
|
Linus Torvalds
|
bb97142197 |
platform-drivers-x86 for v6.17-5
Fixes and New HW Supoort - amd/pmc: Use 8042 quirk for Stellaris Slim Gen6 AMD - dell: Set USTT mode according to BIOS after reboot - dell-lis3lv02d: Add Latitude E6530 - lg-laptop: Fix setting the fan mode The following is an automated shortlog grouped by driver: amd/pmc: - Add Stellaris Slim Gen6 AMD to spurious 8042 quirks list dell-lis3lv02d: - Add Latitude E6530 dell: - Set USTT mode according to BIOS after reboot lg-laptop: - Fix WMAB call in fan_mode_store() -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCaNaJCgAKCRBZrE9hU+XO MdkhAQDsxiGH0G0bCEzmluHOyBJCGYAU9N2FXr2q4JO2ykzFCAD/e/62TuD6lQuP 75aQV+h2eBn7oOOG576ROTYZ2g8M1gc= =U7jd -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Ilpo Järvinen: "Fixes and New HW Supoort - amd/pmc: Use 8042 quirk for Stellaris Slim Gen6 AMD - dell: Set USTT mode according to BIOS after reboot - dell-lis3lv02d: Add Latitude E6530 - lg-laptop: Fix setting the fan mode" * tag 'platform-drivers-x86-v6.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() platform/x86: dell-lis3lv02d: Add Latitude E6530 platform/x86/dell: Set USTT mode according to BIOS after reboot platform/x86/amd/pmc: Add Stellaris Slim Gen6 AMD to spurious 8042 quirks list |
||
|
Gopi Krishna Menon
|
cb0c5a60a6 |
docs: perf: Fujitsu: Fix htmldocs build warnings and errors
Running "make htmldocs" generates the following build errors and
warnings for fujitsu_uncore_pmu.rst:
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:20: ERROR: Unexpected indentation.
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:23: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:28: ERROR: Unexpected indentation.
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:29: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:81: ERROR: Unexpected indentation.
Documentation/admin-guide/perf/fujitsu_uncore_pmu.rst:82: WARNING: Block quote ends without a blank line; unexpected unindent.
Add blank line before bullet lists, block quotes to fix build
errors, resolve warnings and properly render perf commands as
code blocks.
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Reviewed-by: Koichi Okuno <fj2767dz@fujitsu.com>
Fixes:
|
||
|
Yicong Yang
|
a084c3c4a2 |
drivers/perf: hisi: Add tt_core_deprecated for compatibility
Previously tt_core is defined as config1:0-7 which may not cover all the CPUs sharing L3C on platforms with more than 8 CPUs in a L3C. In order to support such platforms extend tt_core to 16 bits, since no spare space in config1, tt_core was moved to config2:0-15. Though linux expects the users to retrieve the control encoding from sysfs first for each option, it's possible if user doesn't follow this and hardcoded tt_core in config1. So add an option tt_core_deprecated for config1:0-7 for backward compatibility. Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Daniel Lee
|
3ed17349f1
|
platform/x86: lg-laptop: Fix WMAB call in fan_mode_store()
When WMAB is called to set the fan mode, the new mode is read from either
bits 0-1 or bits 4-5 (depending on the value of some other EC register).
Thus when WMAB is called with bits 4-5 zeroed and called again with
bits 0-1 zeroed, the second call undoes the effect of the first call.
This causes writes to /sys/devices/platform/lg-laptop/fan_mode to have
no effect (and causes reads to always report a status of zero).
Fix this by calling WMAB once, with the mode set in bits 0,1 and 4,5.
When the fan mode is returned from WMAB it always has this form, so
there is no need to preserve the other bits. As a bonus, the driver
now supports the "Performance" fan mode seen in the LG-provided Windows
control app, which provides less aggressive CPU throttling but louder
fan noise and shorter battery life.
Also, correct the documentation to reflect that 0 corresponds to the
default mode (what the Windows app calls "Optimal") and 1 corresponds
to the silent mode.
Fixes:
|
||
|
Will Deacon
|
f2d64a22fa |
Merge branch 'for-next/perf' into for-next/core
* for-next/perf: (29 commits) perf/dwc_pcie: Fix use of uninitialized variable Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU Documentation: hisi-pmu: Fix of minor format error drivers/perf: hisi: Add support for L3C PMU v3 drivers/perf: hisi: Refactor the event configuration of L3C PMU drivers/perf: hisi: Extend the field of tt_core drivers/perf: hisi: Extract the event filter check of L3C PMU drivers/perf: hisi: Simplify the probe process of each L3C PMU version drivers/perf: hisi: Export hisi_uncore_pmu_isr() drivers/perf: hisi: Relax the event ID check in the framework perf: Fujitsu: Add the Uncore PMU driver perf/arm-cmn: Fix CMN S3 DTM offset perf: arm_spe: Prevent overflow in PERF_IDX2OFF() coresight: trbe: Prevent overflow in PERF_IDX2OFF() MAINTAINERS: Remove myself from HiSilicon PMU maintainers drivers/perf: hisi: Add support for HiSilicon MN PMU driver drivers/perf: hisi: Add support for HiSilicon NoC PMU perf: arm_pmuv3: Factor out PMCCNTR_EL0 use conditions arm64/boot: Enable EL2 requirements for SPE_FEAT_FDS arm64/boot: Factor out a macro to check SPE version ... |
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Yushan Wang
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6d2f913fda |
Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU
Some of HiSilicon V3 PMU hardware is divided into parts to fulfill the job of monitoring specific parts of a device. Add description on that as well as the newly added ext option for L3C PMU. Acked-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Yushan Wang <wangyushan12@huawei.com> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Will Deacon <will@kernel.org> |
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Yushan Wang
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272dd0e5e5 |
Documentation: hisi-pmu: Fix of minor format error
The inline path of sysfs should be placed in literal blocks to make documentation look better. Acked-by: Jonathan Cameron <jonathan.cameron@huawei.com> Acked-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Yushan Wang <wangyushan12@huawei.com> Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Koichi Okuno
|
bad11557ee |
perf: Fujitsu: Add the Uncore PMU driver
This adds a new dynamic PMU to the Perf Events framework to program and control the Uncore PMUs in Fujitsu chips. This driver exports formatting and event information to sysfs so it can be used by the perf user space tools with the syntaxes: perf stat -e pci_iod0_pci0/ea-pci/ ls perf stat -e pci_iod0_pci0/event=0x80/ ls perf stat -e mac_iod0_mac0_ch0/ea-mac/ ls perf stat -e mac_iod0_mac0_ch0/event=0x80/ ls FUJITSU-MONAKA PMU Events Specification v1.1 URL: https://github.com/fujitsu/FUJITSU-MONAKA Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Koichi Okuno <fj2767dz@fujitsu.com> Signed-off-by: Will Deacon <will@kernel.org> |
||
|
SeongJae Park
|
bff3026320 |
Docs/admin-guide/mm/damon/start: add --target_pid to DAMOS example command
The example command doesn't work [1] on the latest DAMON user-space tool, since --damos_action option is updated to receive multiple arguments, and hence cannot know if the final argument is for deductible monitoring target or an argument for --damos_action option. Add --target_pid option to let damo understand it is for target pid. Link: https://lkml.kernel.org/r/20250916032339.115817-5-sj@kernel.org Link: https://github.com/damonitor/damo/pull/32 [2] Signed-off-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Joshua Hahn <joshua.hahnjy@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Baolin Wang
|
69e0a3b490 |
mm: shmem: fix the strategy for the tmpfs 'huge=' options
After commit |
||
|
Johannes Weiner
|
2ccd9fecd9 |
mm: remove unused zpool layer
With zswap using zsmalloc directly, there are no more in-tree users of this code. Remove it. With zpool gone, zsmalloc is now always a simple dependency and no longer something the user needs to configure. Hide CONFIG_ZSMALLOC from the user and have zswap and zram pull it in as needed. Link: https://lkml.kernel.org/r/20250829162212.208258-3-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: SeongJae Park <sj@kernel.org> Acked-by: Yosry Ahmed <yosry.ahmed@linux.dev> Cc: Chengming Zhou <zhouchengming@bytedance.com> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Vitaly Wool <vitaly.wool@konsulko.se> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Bagas Sanjaya
|
1f1cb5d60c |
Documentation: cgroup-v2: Sync manual toctree
Manually-arranged toctree comment in cgroup v2 documentation is a rather out-of-sync with actual contents: a few sections are missing and/or named differently. Sync the toctree. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Yicong Yang
|
e31c0eb103 |
drivers/perf: hisi: Add support for HiSilicon NoC PMU
Adds the support for HiSilicon NoC (Network on Chip) PMU which will be used to monitor the events on the system bus. The PMU device will be named after the SCL ID (either Super CPU cluster or Super IO cluster) and the index ID, just similar to other HiSilicon Uncore PMUs. Below PMU formats are provided besides the event: - ch: the transaction channel (data, request, response, etc) which can be used to filter the counting. - tt_en: tracetag filtering enable. Just as other HiSilicon Uncore PMUs the NoC PMU supports only counting the transactions with tracetag. The NoC PMU doesn't have an interrupt to indicate the overflow. However we have a 64 bit counter which is large enough and it's nearly impossible to overflow. Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Will Deacon <will@kernel.org> |
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|
Ilkka Koskinen
|
71396cfac9 |
perf/dwc_pcie: Support counting multiple lane events in parallel
While Designware PCIe PMU allows to count only one time based event
at a time, it allows to count all the lane events simultaneously.
After the patch one is able to count a group of lane events:
$ perf stat -e '{dwc_rootport/tx_memory_write,lane=1/,dwc_rootport/rx_memory_read,lane=0/}' dd if=/dev/nvme0n1 of=/dev/null bs=1M count=1
Earlier the events wouldn't have been counted successfully.
Signed-off-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Signed-off-by: Will Deacon <will@kernel.org>
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Huang Shijie
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c0f303d7d4 |
arm64: mm: Rework the 'rodata=' options
As per admin guide documentation, "rodata=on" should be the default on
platforms. Documentation/admin-guide/kernel-parameters.txt describes
these options as
rodata= [KNL,EARLY]
on Mark read-only kernel memory as read-only (default).
off Leave read-only kernel memory writable for debugging.
full Mark read-only kernel memory and aliases as read-only
[arm64]
But on arm64 platform, RODATA_FULL_DEFAULT_ENABLED is enabled by default,
so "rodata=full" is the default instead.
For parity with other architectures, namely x86, rework 'rodata=on' to
match the current "full" behaviour and replace 'rodata=full' with a new
'rodata=noalias' option which retains writable aliases in the direct map
for memory regions outside of the kernel image.
Signed-off-by: Huang Shijie <shijie@os.amperecomputing.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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Bagas Sanjaya
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e3df98d303 |
xfs: extend removed sysctls table
Commit |
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Ashish Kalra
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6c7c620585 |
KVM: SEV: Add SEV-SNP CipherTextHiding support
Ciphertext hiding prevents host accesses from reading the ciphertext of SNP guest private memory. Instead of reading ciphertext, the host reads will see constant default values (0xff). The SEV ASID space is split into SEV and SEV-ES/SEV-SNP ASID ranges. Enabling ciphertext hiding further splits the SEV-ES/SEV-SNP ASID space into separate ASID ranges for SEV-ES and SEV-SNP guests. Add a new off-by-default kvm-amd module parameter to enable ciphertext hiding and allow the admin to configure the SEV-ES and SEV-SNP ASID ranges. Simply cap the maximum SEV-SNP ASID as appropriate, i.e. don't reject loading KVM or disable ciphertest hiding for a too-big value, as KVM's general approach for module params is to sanitize inputs based on hardware/kernel support, not burn the world down. This also allows the admin to use -1u to assign all SEV-ES/SNP ASIDs to SNP without needing dedicated handling in KVM. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/95abc49edfde36d4fb791570ea2a4be6ad95fd0d.1755721927.git.ashish.kalra@amd.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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|
Babu Moger
|
bebf57bf05 |
x86/resctrl: Add ABMC feature in the command line options
Add a kernel command-line parameter to enable or disable the exposure of the ABMC (Assignable Bandwidth Monitoring Counters) hardware feature to resctrl. Signed-off-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com |
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Feng Tang
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8c2b91fbb0 |
panic: refine the document for 'panic_print'
User reported current document about SYS_INFO_PANIC_CONSOLE_REPLAY is confusing, that people could expect all user space console messages to be replayed. Specify that only 'kernel' messages will be replayed to solve the confusion. Link: https://lkml.kernel.org/r/20250825025701.81921-3-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Reported-by: Askar Safin <safinaskar@zohomail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
e0c725455f |
Docs/admin-guide/mm/damon/usage: document addr_unit file
Document addr_unit DAMON sysfs file on DAMON usage document. Link: https://lkml.kernel.org/r/20250828171242.59810-10-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Signed-off-by: Quanmin Yan <yanquanmin1@huawei.com> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: ze zuo <zuoze1@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Usama Arif
|
7de854910b |
docs: transhuge: document process level THP controls
This includes the PR_SET_THP_DISABLE/PR_GET_THP_DISABLE pair of prctl calls as well the newly introduced PR_THP_DISABLE_EXCEPT_ADVISED flag for the PR_SET_THP_DISABLE prctl call. Link: https://lkml.kernel.org/r/20250815135549.130506-5-usamaarif642@gmail.com Signed-off-by: Usama Arif <usamaarif642@gmail.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Jann Horn <jannh@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mariano Pache <npache@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: SeongJae Park <sj@kernel.org> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yafang <laoar.shao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Kaplan
|
5799d5d8a6 |
x86/bugs: Add attack vector controls for VMSCAPE
Use attack vector controls to select whether VMSCAPE requires mitigation, similar to other bugs. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> |
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Jakub Kicinski
|
fc3a281041 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc6). Conflicts: net/netfilter/nft_set_pipapo.c net/netfilter/nft_set_pipapo_avx2.c |
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Linus Torvalds
|
223ba8ee0a |
Mitigate VMSCAPE issue with indirect branch predictor flushes
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEV76QKkVc4xCGURexaDWVMHDJkrAFAmi58uwACgkQaDWVMHDJ krCIBxAAj/8/RBSSK6ULtDLKbmpRKMVpwEE1Yt8vK95Z/50gVSidtQtofIet+CPY NeN5Y4Aip3w/JFoIQafop8ZASOFjNjhqVEjE75RdtdDacQCyluqWg/2PrJpKkBVv OWTVVVPD9aSZAY0Tk/79ABV8Fbp/EBID5mhJ40GrBhkLZku2ALDj1eQINEjoBedB 2+sCO1MMqynlmglt8FltwFtl0rHgtlhGviuc/QmsxH9FrLIGBlgciW4Rma+LOtAE 4iD1Ij/ICuwA78kPAgrxvs+B1w3QGZhTPvOHjj0c9kKM3jBqphWoMWFUKbFfUK8i 6rM0jZMB8iaUcKJ+Ra+stNmvddLkbya7J9wwHgQWi/kxEMZMxbbbOXwfl1Ya8sha n/kKxm8Lsrjex3RTnd1hoXvGY2blr0dZ97jfjgOqVuYBZih5yWzixQbuf3TAbCZO Kb+fbfC7EsI1N0zuFh42Q1hT0zxYYshNIxtGPjDwspJRkHvhmNjNswXr7sccXhFo P5araDcYN0ul85SlAhQRMB17mle47ETSgh04LRM4Rq3rbweXzghoRj//WcY4YqYS qSJEFzSC7hVwNabG+NBexUaZL8bZRMoE7qx5lmo0q+tTMIQkEG2rqrFz9b1d4JON g6aKyrD8YyRCoBjZAF0tjCwhQgxSKXGsVwzBYl0+RcY+1Lo1L2U= =8wrr -----END PGP SIGNATURE----- Merge tag 'vmscape-for-linus-20250904' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull vmescape mitigation fixes from Dave Hansen: "Mitigate vmscape issue with indirect branch predictor flushes. vmscape is a vulnerability that essentially takes Spectre-v2 and attacks host userspace from a guest. It particularly affects hypervisors like QEMU. Even if a hypervisor may not have any sensitive data like disk encryption keys, guest-userspace may be able to attack the guest-kernel using the hypervisor as a confused deputy. There are many ways to mitigate vmscape using the existing Spectre-v2 defenses like IBRS variants or the IBPB flushes. This series focuses solely on IBPB because it works universally across vendors and all vulnerable processors. Further work doing vendor and model-specific optimizations can build on top of this if needed / wanted. Do the normal issue mitigation dance: - Add the CPU bug boilerplate - Add a list of vulnerable CPUs - Use IBPB to flush the branch predictors after running guests" * tag 'vmscape-for-linus-20250904' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vmscape: Add old Intel CPUs to affected list x86/vmscape: Warn when STIBP is disabled with SMT x86/bugs: Move cpu_bugs_smt_update() down x86/vmscape: Enable the mitigation x86/vmscape: Add conditional IBPB mitigation x86/vmscape: Enumerate VMSCAPE bug Documentation/hw-vuln: Add VMSCAPE documentation |
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Laurent Pinchart
|
73d31c7626 |
media: i2c: ov6650: Drop unused driver
The ov6650 driver was introduced in v2.6.37 to support the OMAP1-based
Amstrad Delta video phone. The platform still has a board file in the
kernel, but support for the camera was dropped in commit
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Hans Verkuil
|
9bff72cb99 |
Documentation: update Hans Verkuil's email address
Replace hverkuil@xs4all.nl by hverkuil@kernel.org. Signed-off-by: Hans Verkuil <hverkuil@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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|
Yu Kuai
|
5ab829f197 |
md/md-llbitmap: introduce new lockless bitmap
Redundant data is used to enhance data fault tolerance, and the storage method for redundant data vary depending on the RAID levels. And it's important to maintain the consistency of redundant data. Bitmap is used to record which data blocks have been synchronized and which ones need to be resynchronized or recovered. Each bit in the bitmap represents a segment of data in the array. When a bit is set, it indicates that the multiple redundant copies of that data segment may not be consistent. Data synchronization can be performed based on the bitmap after power failure or readding a disk. If there is no bitmap, a full disk synchronization is required. Due to known performance issues with md-bitmap and the unreasonable implementations: - self-managed IO submitting like filemap_write_page(); - global spin_lock I have decided not to continue optimizing based on the current bitmap implementation, this new bitmap is invented without locking from IO fast path and can be used with fast disks. For designs and details, see the comments in drivers/md-llbitmap.c. Link: https://lore.kernel.org/linux-raid/20250829080426.1441678-12-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Li Nan <linan122@huawei.com> |
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|
Yu Kuai
|
fb8cc3b0d9 |
md/md-bitmap: delay registration of bitmap_ops until creating bitmap
Currently bitmap_ops is registered while allocating mddev, this is fine when there is only one bitmap_ops. Delay setting bitmap_ops until creating bitmap, so that user can choose which bitmap to use before running the array. Link: https://lore.kernel.org/linux-raid/20250721171557.34587-7-yukuai@kernel.org Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Li Nan <linan122@huawei.com> Reviewed-by: Xiao Ni <xni@redhat.com> |
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|
Yu Kuai
|
180b82c1c7 |
md/md-bitmap: add a new sysfs api bitmap_type
The api will be used by mdadm to set bitmap_type while creating new array or assembling array, prepare to add a new bitmap. Currently available options are: cat /sys/block/md0/md/bitmap_type none [bitmap] Link: https://lore.kernel.org/linux-raid/20250829080426.1441678-6-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Xiao Ni <xni@redhat.com> Reviewed-by: Li Nan <linan122@huawei.com> |
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|
Tejun Heo
|
4a3e62dfa7 |
cgroup: Merge branch 'for-6.17-fixes' into for-6.18
Pull for-6.17-fixes to receive |
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|
Darrick J. Wong
|
21d59d0022 |
xfs: remove deprecated sysctl knobs
These sysctl knobs were scheduled for removal in September 2025. That time has come, so remove them. Signed-off-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> |
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Darrick J. Wong
|
b9a176e541 |
xfs: remove deprecated mount options
These four mount options were scheduled for removal in September 2025, so remove them now. Cc: preichl@redhat.com Signed-off-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> |
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Darrick J. Wong
|
f69260511c |
xfs: disable deprecated features by default in Kconfig
We promised to turn off these old features by default in September 2025. Do so now. Signed-off-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> |
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Jakub Kicinski
|
5ef04a7b06 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h |
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|
Kees Cook
|
026211c40b |
x86/cfi: Add "debug" option to "cfi=" bootparam
Add "debug" option for "cfi=" bootparam to get details on early CFI initialization steps so future Kees can find breakage easier. Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20250904034656.3670313-5-kees@kernel.org |
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Kees Cook
|
24452d9ef1 |
x86/cfi: Document the "cfi=" bootparam options
The kernel-parameters.txt didn't have a section for the cfi= options. Add it. Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250904034656.3670313-3-kees@kernel.org |
||
|
Borislav Petkov (AMD)
|
43181a4726 |
x86/microcode: Add microcode loader debugging functionality
Instead of adding ad-hoc debugging glue to the microcode loader each time I need it, add debugging functionality which is not built by default. Simulate all patch handling the loader does except the actual loading of the microcode patch into the hardware. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250820135043.19048-3-bp@kernel.org |
||
|
Borislav Petkov (AMD)
|
632ff61706 |
x86/microcode: Add microcode= cmdline parsing
Add a "microcode=" command line argument after which all options can be passed in a comma-separated list. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Reviewed-by: Chang S. Bae <chang.seok.bae@intel.com> Link: https://lore.kernel.org/20250820135043.19048-2-bp@kernel.org |
||
|
Zenghui Yu
|
0059f3b82f |
docs: admin-guide: Fix typo in nfsroot.rst
There is an obvious mistake in nfsroot.rst where pxelinux was wrongly written as pxeliunx. Fix it. Signed-off-by: Zenghui Yu <zenghui.yu@linux.dev> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250827144738.43361-1-zenghui.yu@linux.dev |
||
|
Wladislav Wiebe
|
673f1244b3 |
genirq: Add support for warning on long-running interrupt handlers
Introduce a mechanism to detect and warn about prolonged interrupt handlers. With a new command-line parameter (irqhandler.duration_warn_us=), users can configure the duration threshold in microseconds when a warning in such format should be emitted: "[CPU14] long duration of IRQ[159:bad_irq_handler [long_irq]], took: 1330 us" The implementation uses local_clock() to measure the execution duration of the generic IRQ per-CPU event handler. Signed-off-by: Wladislav Wiebe <wladislav.wiebe@nokia.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/all/20250804093525.851-1-wladislav.wiebe@nokia.com |
||
|
Vivek Alurkar
|
ddfaddc277 |
Fix typo in RAID arrays documentation
Changed "write-throuth" to "write-through". Signed-off-by: Vivek Alurkar <primalkenja@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250821051622.8341-2-primalkenja@gmail.com |
||
|
Jakub Kicinski
|
d23ad54de7 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc4). No conflicts. Adjacent changes: drivers/net/ethernet/intel/idpf/idpf_txrx.c |
||
|
David Kaplan
|
8b3641dfb6 |
x86/bugs: Add attack vector controls for SSB
Attack vector controls for SSB were missed in the initial attack vector series.
The default mitigation for SSB requires user-space opt-in so it is only
relevant for user->user attacks. Check with attack vector controls when
the command is auto - i.e., no explicit user selection has been done.
Fixes:
|
||
|
Dongsheng Yang
|
1d57628ff9 |
dm-pcache: add persistent cache target in device-mapper
This patch introduces dm-pcache, a new DM target that places a DAX-
capable persistent-memory device in front of any slower block device and
uses it as a high-throughput, low-latency cache.
Design highlights
-----------------
- DAX data path – data is copied directly between DRAM and the pmem
mapping, bypassing the block layer’s overhead.
- Segmented, crash-consistent layout
- all layout metadata are dual-replicated CRC-protected.
- atomic kset flushes; key replay on mount guarantees cache integrity
even after power loss.
- Striped multi-tree index
- Multi‑tree indexing for high parallelism.
- overlap-resolution logic ensures non-intersecting cached extents.
- Background services
- write-back worker flushes dirty keys in order, preserving backing-device
crash consistency. This is important for checkpoint in cloud storage.
- garbage collector reclaims clean segments when utilisation exceeds a
tunable threshold.
- Data integrity – optional CRC32 on cached payload; metadata always protected.
Comparison with existing block-level caches
---------------------------------------------------------------------------------------------------------------------------------
| Feature | pcache (this patch) | bcache | dm-writecache |
|----------------------------------|---------------------------------|------------------------------|---------------------------|
| pmem access method | DAX | bio (block I/O) | DAX |
| Write latency (4 K rand-write) | ~5 µs | ~20 µs | ~5 µs |
| Concurrency | multi subtree index | global index tree | single tree + wc_lock |
| IOPS (4K randwrite, 32 numjobs) | 2.1 M | 352 K | 283 K |
| Read-cache support | YES | YES | NO |
| Deployment | no re-format of backend | backend devices must be | no re-format of backend |
| | | reformatted | |
| Write-back ordering | log-structured; | no ordering guarantee | no ordering guarantee |
| | preserves app-IO-order | | |
| Data integrity checks | metadata + data CRC(optional) | metadata CRC only | none |
---------------------------------------------------------------------------------------------------------------------------------
Signed-off-by: Dongsheng Yang <dongsheng.yang@linux.dev>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
|
||
|
Tiffany Yang
|
afa3701c0e |
cgroup: cgroup.stat.local time accounting
There isn't yet a clear way to identify a set of "lost" time that everyone (or at least a wider group of users) cares about. However, users can perform some delay accounting by iterating over components of interest. This patch allows cgroup v2 freezing time to be one of those components. Track the cumulative time that each v2 cgroup spends freezing and expose it to userland via a new local stat file in cgroupfs. Thank you to Michal, who provided the ASCII art in the updated documentation. To access this value: $ mkdir /sys/fs/cgroup/test $ cat /sys/fs/cgroup/test/cgroup.stat.local freeze_time_total 0 Ensure consistent freeze time reads with freeze_seq, a per-cgroup sequence counter. Writes are serialized using the css_set_lock. Signed-off-by: Tiffany Yang <ynaffit@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Linus Torvalds
|
3957a57201 |
cgroup: Fixes for v6.17-rc2
- Fix NULL de-ref in css_rstat_exit() which could happen after allocation failure. - Fix a cpuset partition handling bug and a couple other misc issues. - Doc spelling fix. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaKd9WQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGd3pAQCkqjlcHyKBOr8AXCcNmisyj0PvSFJwmcCWf3Mu 7gsJ0wEAjxqs+otIPHzjhQlRBMN1vhwn5/B/xVqKO57pCHtrGQY= =zj8n -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.17-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: - Fix NULL de-ref in css_rstat_exit() which could happen after allocation failure - Fix a cpuset partition handling bug and a couple other misc issues - Doc spelling fix * tag 'cgroup-for-6.17-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: docs: cgroup: fixed spelling mistakes in documentation cgroup: avoid null de-ref in css_rstat_exit() cgroup/cpuset: Remove the unnecessary css_get/put() in cpuset_partition_write() cgroup/cpuset: Fix a partition error with CPU hotplug cgroup/cpuset: Use static_branch_enable_cpuslocked() on cpusets_insane_config_key |
||
|
Jakub Kicinski
|
a9af709fda |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Randy Dunlap
|
4cc7dce797 |
docs: sysctl: add a few more top-level /proc/sys entries
Add a few missing directories under /proc/sys. Fix punctuation and doubled words. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Rik van Riel <riel@surriel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250819075456.113623-1-rdunlap@infradead.org |
||
|
Bartlomiej Kubik
|
e56878b477 |
docs: kernel-parameters: typo fix and add missing SPDX-License tag
Fix documentation issues by removing a duplicated word and adding the missing SPDX-License identifier. Signed-off-by: Bartlomiej Kubik <kubik.bartlomiej@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250819113551.34356-1-kubik.bartlomiej@gmail.com |
||
|
Lichen Liu
|
278033a225
|
fs: Add 'initramfs_options' to set initramfs mount options
When CONFIG_TMPFS is enabled, the initial root filesystem is a tmpfs. By default, a tmpfs mount is limited to using 50% of the available RAM for its content. This can be problematic in memory-constrained environments, particularly during a kdump capture. In a kdump scenario, the capture kernel boots with a limited amount of memory specified by the 'crashkernel' parameter. If the initramfs is large, it may fail to unpack into the tmpfs rootfs due to insufficient space. This is because to get X MB of usable space in tmpfs, 2*X MB of memory must be available for the mount. This leads to an OOM failure during the early boot process, preventing a successful crash dump. This patch introduces a new kernel command-line parameter, initramfs_options, which allows passing specific mount options directly to the rootfs when it is first mounted. This gives users control over the rootfs behavior. For example, a user can now specify initramfs_options=size=75% to allow the tmpfs to use up to 75% of the available memory. This can significantly reduce the memory pressure for kdump. Consider a practical example: To unpack a 48MB initramfs, the tmpfs needs 48MB of usable space. With the default 50% limit, this requires a memory pool of 96MB to be available for the tmpfs mount. The total memory requirement is therefore approximately: 16MB (vmlinuz) + 48MB (loaded initramfs) + 48MB (unpacked kernel) + 96MB (for tmpfs) + 12MB (runtime overhead) ≈ 220MB. By using initramfs_options=size=75%, the memory pool required for the 48MB tmpfs is reduced to 48MB / 0.75 = 64MB. This reduces the total memory requirement by 32MB (96MB - 64MB), allowing the kdump to succeed with a smaller crashkernel size, such as 192MB. An alternative approach of reusing the existing rootflags parameter was considered. However, a new, dedicated initramfs_options parameter was chosen to avoid altering the current behavior of rootflags (which applies to the final root filesystem) and to prevent any potential regressions. Also add documentation for the new kernel parameter "initramfs_options" This approach is inspired by prior discussions and patches on the topic. Ref: https://www.lightofdawn.org/blog/?viewDetailed=00128 Ref: https://landley.net/notes-2015.html#01-01-2015 Ref: https://lkml.org/lkml/2021/6/29/783 Ref: https://www.kernel.org/doc/html/latest/filesystems/ramfs-rootfs-initramfs.html#what-is-rootfs Signed-off-by: Lichen Liu <lichliu@redhat.com> Link: https://lore.kernel.org/20250815121459.3391223-1-lichliu@redhat.com Tested-by: Rob Landley <rob@landley.net> Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Eric Dumazet
|
a6d4f25888 |
net: set net.core.rmem_max and net.core.wmem_max to 4 MB
SO_RCVBUF and SO_SNDBUF have limited range today, unless distros or system admins change rmem_max and wmem_max. Even iproute2 uses 1 MB SO_RCVBUF which is capped by the kernel. Decouple [rw]mem_max and [rw]mem_default and increase [rw]mem_max to 4 MB. Before: $ sysctl net.core.rmem_default net.core.rmem_max net.core.wmem_default net.core.wmem_max net.core.rmem_default = 212992 net.core.rmem_max = 212992 net.core.wmem_default = 212992 net.core.wmem_max = 212992 After: $ sysctl net.core.rmem_default net.core.rmem_max net.core.wmem_default net.core.wmem_max net.core.rmem_default = 212992 net.core.rmem_max = 4194304 net.core.wmem_default = 212992 net.core.wmem_max = 4194304 Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Link: https://patch.msgid.link/20250819174030.1986278-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Bagas Sanjaya
|
c7c61bc417 |
dm-vdo: Promote dm-vdo title to title heading
dm-vdo docs currently has no explicit title heading but instead there
are multiple section headings as top-level heading. As such, these
sections are rendered as titles and inflates number of entries in the
toctree index.
Promote the first section heading ("dm-vdo") to title heading.
Fixes:
|
||
|
Soham Metha
|
a86f1b4047 |
docs: device-mapper: fixed spelling mistakes in documentation
found/fixed the following typos - flushs -> flushes in `Documentation/admin-guide/device-mapper/delay.rst` Signed-off-by: Soham Metha <sohammetha01@gmail.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
Shubham Sharma
|
5d1c82943f |
docs: device-mapper: fix typos in delay.rst and vdo-design.rst
Fixed the following typos in device-mapper documentation: - explicitely -> explicitly - approriate -> appropriate Signed-off-by: Shubham Sharma <slopixelz@gmail.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
David Sterba
|
37c52167b0 |
docs: Remove remainders of reiserfs
Reiserfs has been removed in 6.13, there are still some mentions in the documentation about it and the tools. Remove those that don't seem relevant anymore but keep references to reiserfs' r5 hash used by some code. There's one change in a script scripts/selinux/install_policy.sh but it does not seem to be relevant either. Signed-off-by: David Sterba <dsterba@suse.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250813100053.1291961-1-dsterba@suse.com |
||
|
Jonathan Corbet
|
4e18a0b090 |
Merge branch 'bjorn' into docs-mw
A big set of typo fixes from Bjorn Helgaas |
||
|
Bjorn Helgaas
|
c349216707 |
Documentation: Fix admin-guide typos
Fix typos. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250813200526.290420-4-helgaas@kernel.org |
||
|
Vivek Yadav
|
6865cb1908 |
docs: remove a duplicated word from kernel-parameters.txt
Fix kernel-doc warning in kernel-parameters.txt WARNING: Possible repeated word: 'is' Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250816082452.219009-1-vivekyadav1207731111@gmail.com |
||
|
Nikola Z. Ivanov
|
ed14c74ddf |
docs: Replace dead links to spectre side channel white papers
The papers are published by Intel, AMD and MIPS. Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250816190028.55573-1-zlatistiv@gmail.com |
||
|
Linus Torvalds
|
8d561baae5 |
- Remove a transitional asm/cpuid.h header which was added only as
a fallback during cpuid helpers reorg - Initialize reserved fields in the SVSM page validation calls structure to zero in order to allow for future structure extensions - Have the sev-guest driver's buffers used in encryption operations be in linear mapping space as the encryption operation can be offloaded to an accelerator - Have a read-only MSR write when in an AMD SNP guest trap to the hypervisor as it is usually done. This makes the guest user experience better by simply raising a #GP instead of terminating said guest - Do not output AVX512 elapsed time for kernel threads because the data is wrong and fix a NULL pointer dereferencing in the process - Adjust the SRSO mitigation selection to the new attack vectors -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmihmPcACgkQEsHwGGHe VUr6Iw/+KKuQdicPRvdQ8Kv+710oHFHka1CY/LdHuADuuzWWE+Zj6RzwraM0aqIr 1E4resu05MPVJj3KAzt0rBS4Ch5bbNU0QHQqhuuxe+EZpbY8XNxx53f43E4wHTS8 bPaZI1GdLZSTh5BUGRj9N0udK5gnd6kbku80PAbP2fqi+aSOZSA8JCqmiUicSi0/ EbYye7n38q8u1Dh2y9t9CBuxAOZEyzCM6LXRELmK5lya1LGJkKOTGllyb8irzsiv HlLW1sN+weeVlvdUd1LvaYgTAetNhSVtiuh71cGMENnpoAyO6HAea+7X8Tg7UHHp zsYRVXKg2CENQpo4OsQ3q/O7fnPTets7NFm8DNwSKO0qoCqn3Yf4AD4IeCIqZdM3 B2an4b1SWN2xtW38YEEGFVKIBIZVLQFzjmwR3yu8wqjhycIW3rNRCiQuI4EvW+ej kx5ZXHXHKvThoLuxio/ILce1oWa4O9K+GzV9vEDHtYK283sCUU2XyUOVq3Ntpmoc /mzOaBWAjN9nMWJ01DoPRh0bs5nkbN/NQxIOHUiOtLmMkwJX9ls/ed2VagL/iMq1 Sj1RZqkLEUYSHgE+HOToK8LXhbuDp6QEv1FUL/29pu1fzXRn5cn0PJx56+EKjJWO f7b3NWMNGbbD/sIcYAtU73GVNnAOGzUkNA7AjDfmq+YoiC5G+LA= =zsPJ -----END PGP SIGNATURE----- Merge tag 'x86_urgent_for_v6.17_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Remove a transitional asm/cpuid.h header which was added only as a fallback during cpuid helpers reorg - Initialize reserved fields in the SVSM page validation calls structure to zero in order to allow for future structure extensions - Have the sev-guest driver's buffers used in encryption operations be in linear mapping space as the encryption operation can be offloaded to an accelerator - Have a read-only MSR write when in an AMD SNP guest trap to the hypervisor as it is usually done. This makes the guest user experience better by simply raising a #GP instead of terminating said guest - Do not output AVX512 elapsed time for kernel threads because the data is wrong and fix a NULL pointer dereferencing in the process - Adjust the SRSO mitigation selection to the new attack vectors * tag 'x86_urgent_for_v6.17_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpuid: Remove transitional <asm/cpuid.h> header x86/sev: Ensure SVSM reserved fields in a page validation entry are initialized to zero virt: sev-guest: Satisfy linear mapping requirement in get_derived_key() x86/sev: Improve handling of writes to intercepted TSC MSRs x86/fpu: Fix NULL dereference in avx512_status() x86/bugs: Select best SRSO mitigation |
||
|
Pawan Gupta
|
556c1ad666 |
x86/vmscape: Enable the mitigation
Enable the previously added mitigation for VMscape. Add the cmdline
vmscape={off|ibpb|force} and sysfs reporting.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
|
||
|
Pawan Gupta
|
9969779d08 |
Documentation/hw-vuln: Add VMSCAPE documentation
VMSCAPE is a vulnerability that may allow a guest to influence the branch prediction in host userspace, particularly affecting hypervisors like QEMU. Add the documentation. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> |
||
|
Erick Karanja
|
f7a2e1c087 |
Docs: admin-guide: Correct spelling mistake
Fix spelling mistake directoy to directory Reported-by: codespell Signed-off-by: Erick Karanja <karanja99erick@gmail.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20250813071837.668613-1-karanja99erick@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Soham Metha
|
6563623e60 |
docs: cgroup: fixed spelling mistakes in documentation
found/fixed the following typo - Availablity -> Availability in `Documentation/admin-guide/cgroup-v2.rst` Signed-off-by: Soham Metha <sohammetha01@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Štěpán Němec
|
7069b5296e |
docs: admin-guide: update to current minimum pipe size default
The pipe size limit used when the fs.pipe-user-pages-soft sysctl value
is reached was increased from one to two pages in commit 46c4c9d1beb7;
update the documentation to match the new reality.
Fixes:
|
||
|
Osama Albahrani
|
3feaa8a469 |
docs: aoe: Remove trailing whitespace
Fix `ERROR: trailing whitespace` errors from scripts/checkpatch.pl Signed-off-by: Osama Albahrani <osalbahr@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250804152516.16493-1-osalbahr@gmail.com |
||
|
David Kaplan
|
4fa7d880ae |
x86/bugs: Select best SRSO mitigation
The SRSO bug can theoretically be used to conduct user->user or guest->guest attacks and requires a mitigation (namely IBPB instead of SBPB on context switch) for these. So mark SRSO as being applicable to the user->user and guest->guest attack vectors. Additionally, SRSO supports multiple mitigations which mitigate different potential attack vectors. Some CPUs are also immune to SRSO from certain attack vectors (like user->kernel). Use the specific attack vectors requiring mitigation to select the best SRSO mitigation to avoid unnecessary performance hits. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250721160310.1804203-1-david.kaplan@amd.com |
||
|
Linus Torvalds
|
35a813e010 |
printk changes for 6.17
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||
|
Linus Torvalds
|
d632ab86af |
dm-table: fix checking for request-based stackable devices
dm-flakey: fix corrupt_bio_byte setup checks dm raid: add support for resync w/o metadata devices dm, dm-mpath, vm-vdo, dm-raid: small code simplification dm-verity: remove support for asynchronous hashes dm-zoned-target: close smatch warning dm-thin: update the documentation dm-thin: enable inline-crypto passthrough -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRnH8MwLyZDhyYfesYTAyx9YGnhbQUCaJC5oRQcbXBhdG9ja2FA cmVkaGF0LmNvbQAKCRATAyx9YGnhbX+RAP911rivQBhdJSiktvnSulBvSANzzNWa 9pNIuHGCmX3RVwEA53xpdUBkWjvGbtrUwk2eu8SK728H9aOFrpaDImKdVws= =gUBT -----END PGP SIGNATURE----- Merge tag 'for-6.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mikulas Patocka: - fix checking for request-based stackable devices (dm-table) - fix corrupt_bio_byte setup checks (dm-flakey) - add support for resync w/o metadata devices (dm raid) - small code simplification (dm, dm-mpath, vm-vdo, dm-raid) - remove support for asynchronous hashes (dm-verity) - close smatch warning (dm-zoned-target) - update the documentation and enable inline-crypto passthrough (dm-thin) * tag 'for-6.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: set DM_TARGET_PASSES_CRYPTO feature for dm-thin dm-thin: update the documentation dm-raid: do not include dm-core.h vdo: omit need_resched() before cond_resched() md: dm-zoned-target: Initialize return variable r to avoid uninitialized use dm-verity: remove support for asynchronous hashes dm-mpath: don't print the "loaded" message if registering fails dm-mpath: make dm_unregister_path_selector return void dm: ima: avoid extra calls to strlen() dm: Simplify dm_io_complete() dm: Remove unnecessary return in dm_zone_endio() dm raid: add support for resync w/o metadata devices dm-flakey: Fix corrupt_bio_byte setup checks dm-table: fix checking for rq stackable devices |
||
|
Linus Torvalds
|
e991acf1bc |
Significant patch series in this pull request:
- The 2 patch series "squashfs: Remove page->mapping references" from
Matthew Wilcox gets us closer to being able to remove page->mapping.
- The 5 patch series "relayfs: misc changes" from Jason Xing does some
maintenance and minor feature addition work in relayfs.
- The 5 patch series "kdump: crashkernel reservation from CMA" from Jiri
Bohac switches us from static preallocation of the kdump crashkernel's
working memory over to dynamic allocation. So the difficulty of
a-priori estimation of the second kernel's needs is removed and the
first kernel obtains extra memory.
- The 5 patch series "generalize panic_print's dump function to be used
by other kernel parts" from Feng Tang implements some consolidation and
rationalizatio of the various ways in which a faiing kernel splats
information at the operator.
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Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Significant patch series in this pull request:
- "squashfs: Remove page->mapping references" (Matthew Wilcox) gets
us closer to being able to remove page->mapping
- "relayfs: misc changes" (Jason Xing) does some maintenance and
minor feature addition work in relayfs
- "kdump: crashkernel reservation from CMA" (Jiri Bohac) switches
us from static preallocation of the kdump crashkernel's working
memory over to dynamic allocation. So the difficulty of a-priori
estimation of the second kernel's needs is removed and the first
kernel obtains extra memory
- "generalize panic_print's dump function to be used by other
kernel parts" (Feng Tang) implements some consolidation and
rationalization of the various ways in which a failing kernel
splats information at the operator
* tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (80 commits)
tools/getdelays: add backward compatibility for taskstats version
kho: add test for kexec handover
delaytop: enhance error logging and add PSI feature description
samples: Kconfig: fix spelling mistake "instancess" -> "instances"
fat: fix too many log in fat_chain_add()
scripts/spelling.txt: add notifer||notifier to spelling.txt
xen/xenbus: fix typo "notifer"
net: mvneta: fix typo "notifer"
drm/xe: fix typo "notifer"
cxl: mce: fix typo "notifer"
KVM: x86: fix typo "notifer"
MAINTAINERS: add maintainers for delaytop
ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below()
ucount: fix atomic_long_inc_below() argument type
kexec: enable CMA based contiguous allocation
stackdepot: make max number of pools boot-time configurable
lib/xxhash: remove unused functions
init/Kconfig: restore CONFIG_BROKEN help text
lib/raid6: update recov_rvv.c zero page usage
docs: update docs after introducing delaytop
...
|
||
|
Matt Fleming
|
ed4f142f72 |
stackdepot: make max number of pools boot-time configurable
We're hitting the WARN in depot_init_pool() about reaching the stack depot limit because we have long stacks that don't dedup very well. Introduce a new start-up parameter to allow users to set the number of maximum stack depot pools. Link: https://lkml.kernel.org/r/20250718153928.94229-1-matt@readmodwrite.com Signed-off-by: Matt Fleming <mfleming@cloudflare.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Oscar Salvador <osalvador@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
6aee5aed2e |
cgroup: Changes for v6.17
- Allow css_rstat_updated() in NMI context to enable memory accounting for allocations in NMI context. - /proc/cgroups doesn't contain useful information for cgroup2 and was updated to only show v1 controllers. This unfortunately broke something in the wild. Add an option to bring back the old behavior to ease transition. - selftest updates and other cleanups. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaIqlxQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGcTMAQDUlGf50ATWB9hDU7zUG4lVn8s8n8/+x8QFGHn4 e4NERQD9FpU/jLN+cwGgspKo+L9qpu/1g+t36cJLcOuEKKoaQwI= =FLwx -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Allow css_rstat_updated() in NMI context to enable memory accounting for allocations in NMI context. - /proc/cgroups doesn't contain useful information for cgroup2 and was updated to only show v1 controllers. This unfortunately broke something in the wild. Add an option to bring back the old behavior to ease transition. - selftest updates and other cleanups. * tag 'cgroup-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: Add compatibility option for content of /proc/cgroups selftests/cgroup: fix cpu.max tests cgroup: llist: avoid memory tears for llist_node selftests: cgroup: Fix missing newline in test_zswap_writeback_one selftests: cgroup: Allow longer timeout for kmem_dead_cgroups cleanup memcg: cgroup: call css_rstat_updated irrespective of in_nmi() cgroup: remove per-cpu per-subsystem locks cgroup: make css_rstat_updated nmi safe cgroup: support to enable nmi-safe css_rstat_updated selftests: cgroup: Fix compilation on pre-cgroupns kernels selftests: cgroup: Optionally set up v1 environment selftests: cgroup: Add support for named v1 hierarchies in test_core selftests: cgroup_util: Add helpers for testing named v1 hierarchies Documentation: cgroup: add section explaining controller availability cgroup: Drop sock_cgroup_classid() dummy implementation |
||
|
Linus Torvalds
|
beace86e61 |
Summary of significant series in this pull request:
- The 4 patch series "mm: ksm: prevent KSM from breaking merging of new
VMAs" from Lorenzo Stoakes addresses an issue with KSM's
PR_SET_MEMORY_MERGE mode: newly mapped VMAs were not eligible for
merging with existing adjacent VMAs.
- The 4 patch series "mm/damon: introduce DAMON_STAT for simple and
practical access monitoring" from SeongJae Park adds a new kernel module
which simplifies the setup and usage of DAMON in production
environments.
- The 6 patch series "stop passing a writeback_control to swap/shmem
writeout" from Christoph Hellwig is a cleanup to the writeback code
which removes a couple of pointers from struct writeback_control.
- The 7 patch series "drivers/base/node.c: optimization and cleanups"
from Donet Tom contains largely uncorrelated cleanups to the NUMA node
setup and management code.
- The 4 patch series "mm: userfaultfd: assorted fixes and cleanups" from
Tal Zussman does some maintenance work on the userfaultfd code.
- The 5 patch series "Readahead tweaks for larger folios" from Ryan
Roberts implements some tuneups for pagecache readahead when it is
reading into order>0 folios.
- The 4 patch series "selftests/mm: Tweaks to the cow test" from Mark
Brown provides some cleanups and consistency improvements to the
selftests code.
- The 4 patch series "Optimize mremap() for large folios" from Dev Jain
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
- The 5 patch series "Remove zero_user()" from Matthew Wilcox expunges
zero_user() in favor of the more modern memzero_page().
- The 3 patch series "mm/huge_memory: vmf_insert_folio_*() and
vmf_insert_pfn_pud() fixes" from David Hildenbrand addresses some warts
which David noticed in the huge page code. These were not known to be
causing any issues at this time.
- The 3 patch series "mm/damon: use alloc_migrate_target() for
DAMOS_MIGRATE_{HOT,COLD" from SeongJae Park provides some cleanup and
consolidation work in DAMON.
- The 3 patch series "use vm_flags_t consistently" from Lorenzo Stoakes
uses vm_flags_t in places where we were inappropriately using other
types.
- The 3 patch series "mm/memfd: Reserve hugetlb folios before
allocation" from Vivek Kasireddy increases the reliability of large page
allocation in the memfd code.
- The 14 patch series "mm: Remove pXX_devmap page table bit and pfn_t
type" from Alistair Popple removes several now-unneeded PFN_* flags.
- The 5 patch series "mm/damon: decouple sysfs from core" from SeongJae
Park implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
- The 5 patch series "madvise cleanup" from Lorenzo Stoakes does quite a
lot of cleanup/maintenance work in the madvise() code.
- The 4 patch series "madvise anon_name cleanups" from Vlastimil Babka
provides additional cleanups on top or Lorenzo's effort.
- The 11 patch series "Implement numa node notifier" from Oscar Salvador
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory on/offline
notifier.
- The 6 patch series "Make MIGRATE_ISOLATE a standalone bit" from Zi Yan
cleans up the pageblock isolation code and fixes a potential issue which
doesn't seem to cause any problems in practice.
- The 5 patch series "selftests/damon: add python and drgn based DAMON
sysfs functionality tests" from SeongJae Park adds additional drgn- and
python-based DAMON selftests which are more comprehensive than the
existing selftest suite.
- The 5 patch series "Misc rework on hugetlb faulting path" from Oscar
Salvador fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
- The 3 patch series "cma: factor out allocation logic from
__cma_declare_contiguous_nid" from Mike Rapoport rationalizes and cleans
up the highmem-specific code in the CMA allocator.
- The 28 patch series "mm/migration: rework movable_ops page migration
(part 1)" from David Hildenbrand provides cleanups and
future-preparedness to the migration code.
- The 2 patch series "mm/damon: add trace events for auto-tuned
monitoring intervals and DAMOS quota" from SeongJae Park adds some
tracepoints to some DAMON auto-tuning code.
- The 6 patch series "mm/damon: fix misc bugs in DAMON modules" from
SeongJae Park does that.
- The 6 patch series "mm/damon: misc cleanups" from SeongJae Park also
does what it claims.
- The 4 patch series "mm: folio_pte_batch() improvements" from David
Hildenbrand cleans up the large folio PTE batching code.
- The 13 patch series "mm/damon/vaddr: Allow interleaving in
migrate_{hot,cold} actions" from SeongJae Park facilitates dynamic
alteration of DAMON's inter-node allocation policy.
- The 3 patch series "Remove unmap_and_put_page()" from Vishal Moola
provides a couple of page->folio conversions.
- The 4 patch series "mm: per-node proactive reclaim" from Davidlohr
Bueso implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
- The 14 patch series "mm/damon: remove damon_callback" from SeongJae
Park replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
- The 10 patch series "mm/mremap: permit mremap() move of multiple VMAs"
from Lorenzo Stoakes implements a number of mremap cleanups (of course)
in preparation for adding new mremap() functionality: newly permit the
remapping of multiple VMAs when the user is specifying MREMAP_FIXED. It
still excludes some specialized situations where this cannot be
performed reliably.
- The 3 patch series "drop hugetlb_free_pgd_range()" from Anthony Yznaga
switches some sparc hugetlb code over to the generic version and removes
the thus-unneeded hugetlb_free_pgd_range().
- The 4 patch series "mm/damon/sysfs: support periodic and automated
stats update" from SeongJae Park augments the present
userspace-requested update of DAMON sysfs monitoring files. Automatic
update is now provided, along with a tunable to control the update
interval.
- The 4 patch series "Some randome fixes and cleanups to swapfile" from
Kemeng Shi does what is claims.
- The 4 patch series "mm: introduce snapshot_page" from Luiz Capitulino
and David Hildenbrand provides (and uses) a means by which debug-style
functions can grab a copy of a pageframe and inspect it locklessly
without tripping over the races inherent in operating on the live
pageframe directly.
- The 6 patch series "use per-vma locks for /proc/pid/maps reads" from
Suren Baghdasaryan addresses the large contention issues which can be
triggered by reads from that procfs file. Latencies are reduced by more
than half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
- The 6 patch series "__folio_split() clean up" from Zi Yan cleans up
__folio_split()!
- The 7 patch series "Optimize mprotect() for large folios" from Dev
Jain provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
- The 2 patch series "selftests/mm: reuse FORCE_READ to replace "asm
volatile("" : "+r" (XXX));" and some cleanup" from wang lian does some
cleanup work in the selftests code.
- The 3 patch series "tools/testing: expand mremap testing" from Lorenzo
Stoakes extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
- The 22 patch series "selftests/damon/sysfs.py: test all parameters"
from SeongJae Park extends the DAMON sysfs interface selftest so that it
tests all possible user-requested parameters. Rather than the present
minimal subset.
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Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"As usual, many cleanups. The below blurbiage describes 42 patchsets.
21 of those are partially or fully cleanup work. "cleans up",
"cleanup", "maintainability", "rationalizes", etc.
I never knew the MM code was so dirty.
"mm: ksm: prevent KSM from breaking merging of new VMAs" (Lorenzo Stoakes)
addresses an issue with KSM's PR_SET_MEMORY_MERGE mode: newly
mapped VMAs were not eligible for merging with existing adjacent
VMAs.
"mm/damon: introduce DAMON_STAT for simple and practical access monitoring" (SeongJae Park)
adds a new kernel module which simplifies the setup and usage of
DAMON in production environments.
"stop passing a writeback_control to swap/shmem writeout" (Christoph Hellwig)
is a cleanup to the writeback code which removes a couple of
pointers from struct writeback_control.
"drivers/base/node.c: optimization and cleanups" (Donet Tom)
contains largely uncorrelated cleanups to the NUMA node setup and
management code.
"mm: userfaultfd: assorted fixes and cleanups" (Tal Zussman)
does some maintenance work on the userfaultfd code.
"Readahead tweaks for larger folios" (Ryan Roberts)
implements some tuneups for pagecache readahead when it is reading
into order>0 folios.
"selftests/mm: Tweaks to the cow test" (Mark Brown)
provides some cleanups and consistency improvements to the
selftests code.
"Optimize mremap() for large folios" (Dev Jain)
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
"Remove zero_user()" (Matthew Wilcox)
expunges zero_user() in favor of the more modern memzero_page().
"mm/huge_memory: vmf_insert_folio_*() and vmf_insert_pfn_pud() fixes" (David Hildenbrand)
addresses some warts which David noticed in the huge page code.
These were not known to be causing any issues at this time.
"mm/damon: use alloc_migrate_target() for DAMOS_MIGRATE_{HOT,COLD" (SeongJae Park)
provides some cleanup and consolidation work in DAMON.
"use vm_flags_t consistently" (Lorenzo Stoakes)
uses vm_flags_t in places where we were inappropriately using other
types.
"mm/memfd: Reserve hugetlb folios before allocation" (Vivek Kasireddy)
increases the reliability of large page allocation in the memfd
code.
"mm: Remove pXX_devmap page table bit and pfn_t type" (Alistair Popple)
removes several now-unneeded PFN_* flags.
"mm/damon: decouple sysfs from core" (SeongJae Park)
implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
"madvise cleanup" (Lorenzo Stoakes)
does quite a lot of cleanup/maintenance work in the madvise() code.
"madvise anon_name cleanups" (Vlastimil Babka)
provides additional cleanups on top or Lorenzo's effort.
"Implement numa node notifier" (Oscar Salvador)
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory
on/offline notifier.
"Make MIGRATE_ISOLATE a standalone bit" (Zi Yan)
cleans up the pageblock isolation code and fixes a potential issue
which doesn't seem to cause any problems in practice.
"selftests/damon: add python and drgn based DAMON sysfs functionality tests" (SeongJae Park)
adds additional drgn- and python-based DAMON selftests which are
more comprehensive than the existing selftest suite.
"Misc rework on hugetlb faulting path" (Oscar Salvador)
fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
"cma: factor out allocation logic from __cma_declare_contiguous_nid" (Mike Rapoport)
rationalizes and cleans up the highmem-specific code in the CMA
allocator.
"mm/migration: rework movable_ops page migration (part 1)" (David Hildenbrand)
provides cleanups and future-preparedness to the migration code.
"mm/damon: add trace events for auto-tuned monitoring intervals and DAMOS quota" (SeongJae Park)
adds some tracepoints to some DAMON auto-tuning code.
"mm/damon: fix misc bugs in DAMON modules" (SeongJae Park)
does that.
"mm/damon: misc cleanups" (SeongJae Park)
also does what it claims.
"mm: folio_pte_batch() improvements" (David Hildenbrand)
cleans up the large folio PTE batching code.
"mm/damon/vaddr: Allow interleaving in migrate_{hot,cold} actions" (SeongJae Park)
facilitates dynamic alteration of DAMON's inter-node allocation
policy.
"Remove unmap_and_put_page()" (Vishal Moola)
provides a couple of page->folio conversions.
"mm: per-node proactive reclaim" (Davidlohr Bueso)
implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
"mm/damon: remove damon_callback" (SeongJae Park)
replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
"mm/mremap: permit mremap() move of multiple VMAs" (Lorenzo Stoakes)
implements a number of mremap cleanups (of course) in preparation
for adding new mremap() functionality: newly permit the remapping
of multiple VMAs when the user is specifying MREMAP_FIXED. It still
excludes some specialized situations where this cannot be performed
reliably.
"drop hugetlb_free_pgd_range()" (Anthony Yznaga)
switches some sparc hugetlb code over to the generic version and
removes the thus-unneeded hugetlb_free_pgd_range().
"mm/damon/sysfs: support periodic and automated stats update" (SeongJae Park)
augments the present userspace-requested update of DAMON sysfs
monitoring files. Automatic update is now provided, along with a
tunable to control the update interval.
"Some randome fixes and cleanups to swapfile" (Kemeng Shi)
does what is claims.
"mm: introduce snapshot_page" (Luiz Capitulino and David Hildenbrand)
provides (and uses) a means by which debug-style functions can grab
a copy of a pageframe and inspect it locklessly without tripping
over the races inherent in operating on the live pageframe
directly.
"use per-vma locks for /proc/pid/maps reads" (Suren Baghdasaryan)
addresses the large contention issues which can be triggered by
reads from that procfs file. Latencies are reduced by more than
half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
"__folio_split() clean up" (Zi Yan)
cleans up __folio_split()!
"Optimize mprotect() for large folios" (Dev Jain)
provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
"selftests/mm: reuse FORCE_READ to replace "asm volatile("" : "+r" (XXX));" and some cleanup" (wang lian)
does some cleanup work in the selftests code.
"tools/testing: expand mremap testing" (Lorenzo Stoakes)
extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
"selftests/damon/sysfs.py: test all parameters" (SeongJae Park)
extends the DAMON sysfs interface selftest so that it tests all
possible user-requested parameters. Rather than the present minimal
subset"
* tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (370 commits)
MAINTAINERS: add missing headers to mempory policy & migration section
MAINTAINERS: add missing file to cgroup section
MAINTAINERS: add MM MISC section, add missing files to MISC and CORE
MAINTAINERS: add missing zsmalloc file
MAINTAINERS: add missing files to page alloc section
MAINTAINERS: add missing shrinker files
MAINTAINERS: move memremap.[ch] to hotplug section
MAINTAINERS: add missing mm_slot.h file THP section
MAINTAINERS: add missing interval_tree.c to memory mapping section
MAINTAINERS: add missing percpu-internal.h file to per-cpu section
mm/page_alloc: remove trace_mm_alloc_contig_migrate_range_info()
selftests/damon: introduce _common.sh to host shared function
selftests/damon/sysfs.py: test runtime reduction of DAMON parameters
selftests/damon/sysfs.py: test non-default parameters runtime commit
selftests/damon/sysfs.py: generalize DAMON context commit assertion
selftests/damon/sysfs.py: generalize monitoring attributes commit assertion
selftests/damon/sysfs.py: generalize DAMOS schemes commit assertion
selftests/damon/sysfs.py: test DAMOS filters commitment
selftests/damon/sysfs.py: generalize DAMOS scheme commit assertion
selftests/damon/sysfs.py: test DAMOS destinations commitment
...
|
||
|
Linus Torvalds
|
02523d2d93 |
integrity-v6.17
-----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQQdXVVFGN5XqKr1Hj7LwZzRsCrn5QUCaItL7xQcem9oYXJAbGlu dXguaWJtLmNvbQAKCRDLwZzRsCrn5TduAQDu7W14clgQiJNwYo2hN5cEnfKZVkRI 6PJGyxV+g+cMOQEA4Aepo2EL86kQJH33iAUmzi0bvyQl4cPTuKqpw5CgjQg= =eGra -----END PGP SIGNATURE----- Merge tag 'integrity-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity Pull integrity update from Mimi Zohar: "A single commit to permit disabling IMA from the boot command line for just the kdump kernel. The exception itself sort of makes sense. My concern is that exceptions do not remain as exceptions, but somehow morph to become the norm" * tag 'integrity-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity: ima: add a knob ima= to allow disabling IMA in kdump kernel |
||
|
Linus Torvalds
|
b1cce98493 |
It has been a relatively busy cycle for docs, especially the build system:
- The Perl kernel-doc script was added to 2.3.52pre1 just after the turn of
the millennium. Over the following 25 years, it accumulated a vast
amount of cruft, all in a language few people want to deal with anymore.
Mauro's Python replacement in 6.16 faithfully reproduced all of the cruft
in the hope of avoiding regressions. Now that we have a more reasonable
code base, though, we can work on cleaning it up; many of the changes
this time around are toward that end.
- A reorganization of the ext4 docs into the usual TOC format.
- Various Chinese translations and updates.
- A new script from Mauro to help with docs-build testing.
- A new document for linked lists
- A sweep through MAINTAINERS fixing broken GitHub git:// repository links.
...and lots of fixes and updates.
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Merge tag 'docs-6.17' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a relatively busy cycle for docs, especially the build
system:
- The Perl kernel-doc script was added to 2.3.52pre1 just after the
turn of the millennium. Over the following 25 years, it accumulated
a vast amount of cruft, all in a language few people want to deal
with anymore. Mauro's Python replacement in 6.16 faithfully
reproduced all of the cruft in the hope of avoiding regressions.
Now that we have a more reasonable code base, though, we can work
on cleaning it up; many of the changes this time around are toward
that end.
- A reorganization of the ext4 docs into the usual TOC format.
- Various Chinese translations and updates.
- A new script from Mauro to help with docs-build testing.
- A new document for linked lists
- A sweep through MAINTAINERS fixing broken GitHub git:// repository
links.
...and lots of fixes and updates"
* tag 'docs-6.17' of git://git.lwn.net/linux: (147 commits)
scripts: add origin commit identification based on specific patterns
sphinx: kernel_abi: fix performance regression with O=<dir>
Documentation: core-api: entry: Replace deprecated KVM entry/exit functions
docs: fault-injection: drop reference to md-faulty
docs: document linked lists
scripts: kdoc: make it backward-compatible with Python 3.7
docs: kernel-doc: emit warnings for ancient versions of Python
Documentation/rtla: Describe exit status
Documentation/rtla: Add include common_appendix.rst
docs: kernel: Clarify printk_ratelimit_burst reset behavior
Documentation: ioctl-number: Don't repeat macro names
Documentation: ioctl-number: Shorten macros table
Documentation: ioctl-number: Correct full path to papr-physical-attestation.h
Documentation: ioctl-number: Extend "Include File" column width
Documentation: ioctl-number: Fix linuxppc-dev mailto link
overlayfs.rst: fix typos
docs: kdoc: emit a warning for ancient versions of Python
docs: kdoc: clean up check_sections()
docs: kdoc: directly access the always-there KdocItem fields
docs: kdoc: straighten up dump_declaration()
...
|
||
|
LongPing Wei
|
9576e1aecf |
dm-thin: update the documentation
1. convert KB/MB/GB to KiB/MiB/GiB; 2. change the number of sectors for 128MiB from 256000 to 262144 as 256000 sectors is neither 128 MB nor 128 MiB. Signed-off-by: LongPing Wei <weilongping@oppo.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
Linus Torvalds
|
e8d780dcd9 |
slab updates for 6.17
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmiHj+8ACgkQu+CwddJF iJrnOggAjBwzwvJsUWB3YBaF0wyLipLcdNsbbDOqvLYShQifaEuwN/i8FYO+D7a3 DyBR3NK4pWcZtxrSJVHcAuy06yQq5sqeU9Dc5iJ+ADCXnqYshUFp5ARtNVaputGy b4990JMIG0YxEBD3Gx01kicCdae9JkU5FGZKFk65oHalaGQk7GtMfG+e/obh4z9D e9R5Ub+9zM9Efwl/DD7qkETWKAq0gBjvbj0dYO0E7ctO/WNr93Z1FsnbxiUcPiG3 ED1LwTuNYYccBf/8iPGy/cp0WcWTwGtjbPEUk3lyY0KcrpgGT+cyvJj8G0GfnvV4 V/OLZrzwVZw2k3MopbFl/RdgWGf0bA== =gZB5 -----END PGP SIGNATURE----- Merge tag 'slab-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - Convert struct slab to its own flags instead of referencing page flags, which is another preparation step before separating it from struct page completely. Along with that, a bunch of documentation fixes and cleanups (Matthew Wilcox) - Convert large kmalloc to use frozen pages in order to be consistent with non-large kmalloc slabs (Vlastimil Babka) - MAINTAINERS updates (Matthew Wilcox, Lorenzo Stoakes) - Restore NUMA policy support for large kmalloc, broken by mistake in v6.1 (Vlastimil Babka) * tag 'slab-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: MAINTAINERS: add missing files to slab section slab: Update MAINTAINERS entry memcg_slabinfo: Fix use of PG_slab kfence: Remove mention of PG_slab vmcoreinfo: Remove documentation of PG_slab and PG_hugetlb doc: Add slab internal kernel-doc slub: Fix a documentation build error for krealloc() slab: Add SL_pfmemalloc flag slab: Add SL_partial flag slab: Rename slab->__page_flags to slab->flags doc: Move SLUB documentation to the admin guide mm, slab: use frozen pages for large kmalloc mm, slab: restore NUMA policy support for large kmalloc |
||
|
Linus Torvalds
|
2db4df0c09 |
RCU pull request for v6.17
This pull request contains the following branches:
rcu-exp.23.07.2025
- Protect against early RCU exp quiescent state reporting during exp
grace period initialization.
- Remove superfluous barrier in task unblock path.
- Remove the CPU online quiescent state report optimization, which is
error prone for certain scenarios.
- Add warning for unexpected pending requested expedited quiescent
state on dying CPU.
rcu.22.07.2025
- Robustify rcu_is_cpu_rrupt_from_idle() by using more accurate
indicators of the actual context tracking state of a CPU.
- Handle ->defer_qs_iw_pending field data race.
- Enable rcu_normal_wake_from_gp by default on systems with <= 16 CPUs.
- Fix lockup in rcu_read_unlock() due to recursive irq_exit() calls.
- Refactor expedited handling condition in rcu_read_unlock_special().
- Documentation updates for hotplug and GP init scan ordering,
separation of rcu_state and rnp's gp_seq states, quiescent state
reporting for offline CPUs.
torture-scripts.16.07.2025
- Cleanup and improve scripts : remove superfluous warnings for disabled
tests; better handling of kvm.sh --kconfig arg; suppress some confusing
diagnostics; tolerate bad kvm.sh args; add new diagnostic for build
output; fail allmodconfig testing on warnings.
- Include RCU_TORTURE_TEST_CHK_RDR_STATE config for KCSAN kernels.
- Disable default RCU-tasks and clocksource-wdog testing on arm64.
- Add EXPERT Kconfig option for arm64 KCSAN runs.
- Remove SRCU-lite testing.
rcutorture.16.07.2025
- Start torture writer threads creation after reader threads to handle
race in SRCU-P scenario.
- Add SRCU down_read()/up_read() test.
- Add diagnostics for delayed SRCU up_read(), unmatched up_read(), print
number of up/down readers and the number of such readers which
migrated to other CPU.
- Ignore certain unsupported configurations for trivial RCU test.
- Fix splats in RT kernels due to inaccurate checks for BH-disabled
context.
- Enable checks and logs to capture intentionally exercised unexpected
scenarios (too short readers) for BUSTED test.
- Remove SRCU-lite testing.
srcu.19.07.2025
- Expedite SRCU-fast grace periods.
- Remove SRCU-lite implementation.
- Add guards for SRCU-fast readers.
rcu.nocb.18.07.2025
- Dump NOCB group leader state on stall detection.
- Robustify nocb_cb_kthread pointer accesses.
- Fix delayed execution of hurry callbacks when LAZY_RCU is enabled.
refscale.07.07.2025
- Fix multiplication overflow in "loops" and "nreaders" calculations.
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Merge tag 'rcu.release.v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Expedited grace period updates:
- Protect against early RCU exp quiescent state reporting during exp
grace period initialization
- Remove superfluous barrier in task unblock path
- Remove the CPU online quiescent state report optimization, which is
error prone for certain scenarios
- Add warning for unexpected pending requested expedited quiescent
state on dying CPU
Core:
- Robustify rcu_is_cpu_rrupt_from_idle() by using more accurate
indicators of the actual context tracking state of a CPU
- Handle ->defer_qs_iw_pending field data race
- Enable rcu_normal_wake_from_gp by default on systems with <= 16
CPUs
- Fix lockup in rcu_read_unlock() due to recursive irq_exit() calls
- Refactor expedited handling condition in rcu_read_unlock_special()
- Documentation updates for hotplug and GP init scan ordering,
separation of rcu_state and rnp's gp_seq states, quiescent state
reporting for offline CPUs
torture-scripts:
- Cleanup and improve scripts : remove superfluous warnings for
disabled tests; better handling of kvm.sh --kconfig arg; suppress
some confusing diagnostics; tolerate bad kvm.sh args; add new
diagnostic for build output; fail allmodconfig testing on warnings
- Include RCU_TORTURE_TEST_CHK_RDR_STATE config for KCSAN kernels
- Disable default RCU-tasks and clocksource-wdog testing on arm64
- Add EXPERT Kconfig option for arm64 KCSAN runs
- Remove SRCU-lite testing
rcutorture:
- Start torture writer threads creation after reader threads to
handle race in SRCU-P scenario
- Add SRCU down_read()/up_read() test
- Add diagnostics for delayed SRCU up_read(), unmatched up_read(),
print number of up/down readers and the number of such readers
which migrated to other CPU
- Ignore certain unsupported configurations for trivial RCU test
- Fix splats in RT kernels due to inaccurate checks for BH-disabled
context
- Enable checks and logs to capture intentionally exercised
unexpected scenarios (too short readers) for BUSTED test
- Remove SRCU-lite testing
srcu:
- Expedite SRCU-fast grace periods
- Remove SRCU-lite implementation
- Add guards for SRCU-fast readers
rcu nocb:
- Dump NOCB group leader state on stall detection
- Robustify nocb_cb_kthread pointer accesses
- Fix delayed execution of hurry callbacks when LAZY_RCU is enabled
refscale:
- Fix multiplication overflow in "loops" and "nreaders" calculations"
* tag 'rcu.release.v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (49 commits)
rcu: Document concurrent quiescent state reporting for offline CPUs
rcu: Document separation of rcu_state and rnp's gp_seq
rcu: Document GP init vs hotplug-scan ordering requirements
srcu: Add guards for SRCU-fast readers
rcu: Fix delayed execution of hurry callbacks
rcu: Refactor expedited handling check in rcu_read_unlock_special()
checkpatch: Remove SRCU-lite deprecation
srcu: Remove SRCU-lite implementation
srcu: Expedite SRCU-fast grace periods
rcutorture: Remove support for SRCU-lite
rcutorture: Remove SRCU-lite scenarios
torture: Remove support for SRCU-lite
torture: Make torture.sh --allmodconfig testing fail on warnings
torture: Add "ERROR" diagnostic for testing kernel-build output
torture: Make torture.sh tolerate runs having bad kvm.sh arguments
torture: Add textid.txt file to --do-allmodconfig and --do-rcu-rust runs
torture: Extract testid.txt generation to separate script
torture: Suppress "find" diagnostics from torture.sh --do-none run
torture: Provide EXPERT Kconfig option for arm64 KCSAN torture.sh runs
rcu: Fix rcu_read_unlock() deadloop due to IRQ work
...
|
||
|
Linus Torvalds
|
4b290aae78 |
Summary
* Move sysctls out of the kern_table array
This is the final move of ctl_tables into their respective subsystems. Only 5
(out of the original 50) will remain in kernel/sysctl.c file; these handle
either sysctl or common arch variables.
By decentralizing sysctl registrations, subsystem maintainers regain control
over their sysctl interfaces, improving maintainability and reducing the
likelihood of merge conflicts.
* docs: Remove false positives from check-sysctl-docs
Stopped falsely identifying sysctls as undocumented or unimplemented in the
check-sysctl-docs script. This script can now be used to automatically
identify if documentation is missing.
* Testing
All these have been in linux-next since rc3, giving them a solid 3 to 4 weeks
worth of testing. Additionally, sysctl selftests and kunit were also run
locally on my x86_64
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Merge tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados:
- Move sysctls out of the kern_table array
This is the final move of ctl_tables into their respective
subsystems. Only 5 (out of the original 50) will remain in
kernel/sysctl.c file; these handle either sysctl or common arch
variables.
By decentralizing sysctl registrations, subsystem maintainers regain
control over their sysctl interfaces, improving maintainability and
reducing the likelihood of merge conflicts.
- docs: Remove false positives from check-sysctl-docs
Stopped falsely identifying sysctls as undocumented or unimplemented
in the check-sysctl-docs script. This script can now be used to
automatically identify if documentation is missing.
* tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: (23 commits)
docs: Downgrade arm64 & riscv from titles to comment
docs: Replace spaces with tabs in check-sysctl-docs
docs: Remove colon from ctltable title in vm.rst
docs: Add awk section for ucount sysctl entries
docs: Use skiplist when checking sysctl admin-guide
docs: nixify check-sysctl-docs
sysctl: rename kern_table -> sysctl_subsys_table
kernel/sys.c: Move overflow{uid,gid} sysctl into kernel/sys.c
uevent: mv uevent_helper into kobject_uevent.c
sysctl: Removed unused variable
sysctl: Nixify sysctl.sh
sysctl: Remove superfluous includes from kernel/sysctl.c
sysctl: Remove (very) old file changelog
sysctl: Move sysctl_panic_on_stackoverflow to kernel/panic.c
sysctl: move cad_pid into kernel/pid.c
sysctl: Move tainted ctl_table into kernel/panic.c
Input: sysrq: mv sysrq into drivers/tty/sysrq.c
fork: mv threads-max into kernel/fork.c
parisc/power: Move soft-power into power.c
mm: move randomize_va_space into memory.c
...
|
||
|
Linus Torvalds
|
bf76f23aa1 |
Scheduler updates for v6.17:
Core scheduler changes:
- Better tracking of maximum lag of tasks in presence of different
slices duration, for better handling of lag in the fair
scheduler. (Vincent Guittot)
- Clean up and standardize #if/#else/#endif markers throughout
the entire scheduler code base (Ingo Molnar)
- Make SMP unconditional: build the SMP scheduler's
data structures and logic on UP kernel too, even though
they are not used, to simplify the scheduler and remove
around 200 #ifdef/[#else]/#endif blocks from the
scheduler. (Ingo Molnar)
- Reorganize cgroup bandwidth control interface handling
for better interfacing with sched_ext (Tejun Heo)
Balancing:
- Bump sd->max_newidle_lb_cost when newidle balance fails (Chris Mason)
- Remove sched_domain_topology_level::flags to simplify the code (Prateek Nayak)
- Simplify and clean up build_sched_topology() (Li Chen)
- Optimize build_sched_topology() on large machines (Li Chen)
Real-time scheduling:
- Add initial version of proxy execution: a mechanism for mutex-owning
tasks to inherit the scheduling context of higher priority waiters.
Currently limited to a single runqueue and conditional on CONFIG_EXPERT,
and other limitations. (John Stultz, Peter Zijlstra, Valentin Schneider)
- Deadline scheduler (Juri Lelli):
- Fix dl_servers initialization order (Juri Lelli)
- Fix DL scheduler's root domain reinitialization logic (Juri Lelli)
- Fix accounting bugs after global limits change (Juri Lelli)
- Fix scalability regression by implementing less agressive dl_server handling
(Peter Zijlstra)
PSI:
- Improve scalability by optimizing psi_group_change() cpu_clock() usage
(Peter Zijlstra)
Rust changes:
- Make Task, CondVar and PollCondVar methods inline to avoid unnecessary
function calls (Kunwu Chan, Panagiotis Foliadis)
- Add might_sleep() support for Rust code: Rust's "#[track_caller]"
mechanism is used so that Rust's might_sleep() doesn't need to be
defined as a macro (Fujita Tomonori)
- Introduce file_from_location() (Boqun Feng)
Debugging & instrumentation:
- Make clangd usable with scheduler source code files again (Peter Zijlstra)
- tools: Add root_domains_dump.py which dumps root domains info (Juri Lelli)
- tools: Add dl_bw_dump.py for printing bandwidth accounting info (Juri Lelli)
Misc cleanups & fixes:
- Remove play_idle() (Feng Lee)
- Fix check_preemption_disabled() (Sebastian Andrzej Siewior)
- Do not call __put_task_struct() on RT if pi_blocked_on is set
(Luis Claudio R. Goncalves)
- Correct the comment in place_entity() (wang wei)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core scheduler changes:
- Better tracking of maximum lag of tasks in presence of different
slices duration, for better handling of lag in the fair scheduler
(Vincent Guittot)
- Clean up and standardize #if/#else/#endif markers throughout the
entire scheduler code base (Ingo Molnar)
- Make SMP unconditional: build the SMP scheduler's data structures
and logic on UP kernel too, even though they are not used, to
simplify the scheduler and remove around 200 #ifdef/[#else]/#endif
blocks from the scheduler (Ingo Molnar)
- Reorganize cgroup bandwidth control interface handling for better
interfacing with sched_ext (Tejun Heo)
Balancing:
- Bump sd->max_newidle_lb_cost when newidle balance fails (Chris
Mason)
- Remove sched_domain_topology_level::flags to simplify the code
(Prateek Nayak)
- Simplify and clean up build_sched_topology() (Li Chen)
- Optimize build_sched_topology() on large machines (Li Chen)
Real-time scheduling:
- Add initial version of proxy execution: a mechanism for
mutex-owning tasks to inherit the scheduling context of higher
priority waiters.
Currently limited to a single runqueue and conditional on
CONFIG_EXPERT, and other limitations (John Stultz, Peter Zijlstra,
Valentin Schneider)
- Deadline scheduler (Juri Lelli):
- Fix dl_servers initialization order (Juri Lelli)
- Fix DL scheduler's root domain reinitialization logic (Juri
Lelli)
- Fix accounting bugs after global limits change (Juri Lelli)
- Fix scalability regression by implementing less agressive
dl_server handling (Peter Zijlstra)
PSI:
- Improve scalability by optimizing psi_group_change() cpu_clock()
usage (Peter Zijlstra)
Rust changes:
- Make Task, CondVar and PollCondVar methods inline to avoid
unnecessary function calls (Kunwu Chan, Panagiotis Foliadis)
- Add might_sleep() support for Rust code: Rust's "#[track_caller]"
mechanism is used so that Rust's might_sleep() doesn't need to be
defined as a macro (Fujita Tomonori)
- Introduce file_from_location() (Boqun Feng)
Debugging & instrumentation:
- Make clangd usable with scheduler source code files again (Peter
Zijlstra)
- tools: Add root_domains_dump.py which dumps root domains info (Juri
Lelli)
- tools: Add dl_bw_dump.py for printing bandwidth accounting info
(Juri Lelli)
Misc cleanups & fixes:
- Remove play_idle() (Feng Lee)
- Fix check_preemption_disabled() (Sebastian Andrzej Siewior)
- Do not call __put_task_struct() on RT if pi_blocked_on is set (Luis
Claudio R. Goncalves)
- Correct the comment in place_entity() (wang wei)"
* tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (84 commits)
sched/idle: Remove play_idle()
sched: Do not call __put_task_struct() on rt if pi_blocked_on is set
sched: Start blocked_on chain processing in find_proxy_task()
sched: Fix proxy/current (push,pull)ability
sched: Add an initial sketch of the find_proxy_task() function
sched: Fix runtime accounting w/ split exec & sched contexts
sched: Move update_curr_task logic into update_curr_se
locking/mutex: Add p->blocked_on wrappers for correctness checks
locking/mutex: Rework task_struct::blocked_on
sched: Add CONFIG_SCHED_PROXY_EXEC & boot argument to enable/disable
sched/topology: Remove sched_domain_topology_level::flags
x86/smpboot: avoid SMT domain attach/destroy if SMT is not enabled
x86/smpboot: moves x86_topology to static initialize and truncate
x86/smpboot: remove redundant CONFIG_SCHED_SMT
smpboot: introduce SDTL_INIT() helper to tidy sched topology setup
tools/sched: Add dl_bw_dump.py for printing bandwidth accounting info
tools/sched: Add root_domains_dump.py which dumps root domains info
sched/deadline: Fix accounting after global limits change
sched/deadline: Reset extra_bw to max_bw when clearing root domains
sched/deadline: Initialize dl_servers after SMP
...
|
||
|
Linus Torvalds
|
04d29e3609 |
- Untangle the Retbleed from the ITS mitigation on Intel. Allow for ITS
to enable stuffing independently from Retbleed, do some cleanups to simplify and streamline the code - Simplify SRSO and make mitigation types selection more versatile depending on the Retbleed mitigation selection. Simplify code some - Add the second part of the attack vector controls which provide a lot friendlier user interface to the speculation mitigations than selecting each one by one as it is now. Instead, the selection of whole attack vectors which are relevant to the system in use can be done and protection against only those vectors is enabled, thus giving back some performance to the users -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmiHh6cACgkQEsHwGGHe VUqprw//QMpqtWGVbo4bJ176sLtwn8cdKxOJwx9rWyFH/f3Zcn5hK1x+Zifm22hj NNo7YMLTvEg6BicxIDKp89tfXM5cwLS3pcUabWy7IS7Xzs7yLyRajNQ3hOFhQd9g UAUg8xx33xspCatlXzl4HcbOR0xyxb/qR4vd5H89Gir9GIuiO5+uz+3SdqEzzl8w 2UfPDY5B9cXO8VoGsvJMtLTO1ULUHHZPgRdPaH8rSr9QkGlVFefpgUaw6Budic84 kjNpE4tyJEvVLceZr8UtZWmVBwBS4z9oNRdqHbCFnrpPdYXnzYXA6pKMm1vP3zCz atRuWxmn0U6o9wZfxcBF7ZI2o3k049U8zxLWlz9mX4pXbMuqSX6MsR4kw82ta/Hp IzM9LckPO2STYHvJJlcEOivYbKTKttwYZd0rjfaFtJ0z+vVar4EyPyTbfGAdiH50 T2UUmC9SpffVVhnOcaTUGtT/4SFCVA8ZNsoPm27auGVzZRnLOFSV63iv5fl41o3X pELyVfLzR3XtXFNXrzXY09lEKh5HIiy33Qe+syCNEoF56zTN+IREu37M7dKiWBmx xRJE9U9ZgxZjbEuMV0jKEMPOMzMf1ONQw5HSpfIgoT5OLwKXhP5HptHkKS3rwppG 5Glo2kfvxKzFl/THHv7EPoIvVVL/tezcvO3H7z4owRl/jgw0CvA= =zO6b -----END PGP SIGNATURE----- Merge tag 'x86_bugs_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 CPU mitigation updates from Borislav Petkov: - Untangle the Retbleed from the ITS mitigation on Intel. Allow for ITS to enable stuffing independently from Retbleed, do some cleanups to simplify and streamline the code - Simplify SRSO and make mitigation types selection more versatile depending on the Retbleed mitigation selection. Simplify code some - Add the second part of the attack vector controls which provide a lot friendlier user interface to the speculation mitigations than selecting each one by one as it is now. Instead, the selection of whole attack vectors which are relevant to the system in use can be done and protection against only those vectors is enabled, thus giving back some performance to the users * tag 'x86_bugs_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) x86/bugs: Print enabled attack vectors x86/bugs: Add attack vector controls for TSA x86/pti: Add attack vector controls for PTI x86/bugs: Add attack vector controls for ITS x86/bugs: Add attack vector controls for SRSO x86/bugs: Add attack vector controls for L1TF x86/bugs: Add attack vector controls for spectre_v2 x86/bugs: Add attack vector controls for BHI x86/bugs: Add attack vector controls for spectre_v2_user x86/bugs: Add attack vector controls for retbleed x86/bugs: Add attack vector controls for spectre_v1 x86/bugs: Add attack vector controls for GDS x86/bugs: Add attack vector controls for SRBDS x86/bugs: Add attack vector controls for RFDS x86/bugs: Add attack vector controls for MMIO x86/bugs: Add attack vector controls for TAA x86/bugs: Add attack vector controls for MDS x86/bugs: Define attack vectors relevant for each bug x86/Kconfig: Add arch attack vector support cpu: Define attack vectors ... |
||
|
Linus Torvalds
|
78bb43e51b |
Updates for the generic entry code:
- Split the code into syscall and exception/interrupt parts to ease the
conversion of ARM[64] to the generic entry infrastructure
- Extend syscall user dispatching to support a single intercepted range
instead of the default single non-intercepted range. That allows
monitoring/analysis of a specific executable range, e.g. a library, and
also provides flexibility for sandboxing scenarios.
- Cleanup and extend the user dispatch selftest
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Merge tag 'core-entry-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull generic entry code updates from Thomas Gleixner:
- Split the code into syscall and exception/interrupt parts to ease the
conversion of ARM[64] to the generic entry infrastructure
- Extend syscall user dispatching to support a single intercepted range
instead of the default single non-intercepted range. That allows
monitoring/analysis of a specific executable range, e.g. a library,
and also provides flexibility for sandboxing scenarios
- Cleanup and extend the user dispatch selftest
* tag 'core-entry-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
entry: Split generic entry into generic exception and syscall entry
selftests: Add tests for PR_SYS_DISPATCH_INCLUSIVE_ON
syscall_user_dispatch: Add PR_SYS_DISPATCH_INCLUSIVE_ON
selftests: Fix errno checking in syscall_user_dispatch test
|
||
|
Linus Torvalds
|
0b29600a30 |
Updates for interrupt chip drivers:
- Add support of forced affinity setting to yet offline CPUs for the
MIPS-GIC to ensure that the affinity of per CPU interrupts can be set
during the early bringup phase of a secondary CPU in the hotplug code
before the CPU is set online and interrupts are enabled.\
- Add support for the MIPS (RISC-V !?!?) P8700 SoC in the ACLINT_SSWI
interrupt chip
- Make the interrupt routing to RISV-V harts specification compliant so it
supports arbitrary hart indices
- Add a command line parameter and related handling to disable the generic
RISCV IMSIC mechanism on platforms which use a trap-emulated IMSIC.
Unfortunatly this is required because there is no mechanism available to
discover this programatically.
- Enable wakeup sources on the Renesas RZV2H driver
- Convert interrupt chip drivers, which use a open coded variant of
msi_create_parent_irq_domain() to use the new functionality
- Convert interrupt chip drivers, which use the old style two level
implementation of MSI support over to the MSI parent mechanism to
prepare for removing at least one of the three PCI/MSI backend variants.
- The usual cleanups and improvements all over the place
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Merge tag 'irq-drivers-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt chip driver updates from Thomas Gleixner:
- Add support of forced affinity setting to yet offline CPUs for the
MIPS-GIC to ensure that the affinity of per CPU interrupts can be set
during the early bringup phase of a secondary CPU in the hotplug code
before the CPU is set online and interrupts are enabled
- Add support for the MIPS (RISC-V !?!?) P8700 SoC in the ACLINT_SSWI
interrupt chip
- Make the interrupt routing to RISV-V harts specification compliant so
it supports arbitrary hart indices
- Add a command line parameter and related handling to disable the
generic RISCV IMSIC mechanism on platforms which use a trap-emulated
IMSIC. Unfortunatly this is required because there is no mechanism
available to discover this programatically.
- Enable wakeup sources on the Renesas RZV2H driver
- Convert interrupt chip drivers, which use a open coded variant of
msi_create_parent_irq_domain() to use the new functionality
- Convert interrupt chip drivers, which use the old style two level
implementation of MSI support over to the MSI parent mechanism to
prepare for removing at least one of the three PCI/MSI backend
variants.
- The usual cleanups and improvements all over the place
* tag 'irq-drivers-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
irqchip/renesas-irqc: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
irqchip/renesas-intc-irqpin: Convert to DEFINE_SIMPLE_DEV_PM_OPS()
irqchip/riscv-imsic: Add kernel parameter to disable IPIs
irqchip/gic-v3: Fix GICD_CTLR register naming
irqchip/ls-scfg-msi: Fix NULL dereference in error handling
irqchip/ls-scfg-msi: Switch to use msi_create_parent_irq_domain()
irqchip/armada-370-xp: Switch to msi_create_parent_irq_domain()
irqchip/alpine-msi: Switch to msi_create_parent_irq_domain()
irqchip/alpine-msi: Convert to __free
irqchip/alpine-msi: Convert to lock guards
irqchip/alpine-msi: Clean up whitespace style
irqchip/sg2042-msi: Switch to msi_create_parent_irq_domain()
irqchip/loongson-pch-msi.c: Switch to msi_create_parent_irq_domain()
irqchip/imx-mu-msi: Convert to msi_create_parent_irq_domain() helper
irqchip/riscv-imsic: Convert to msi_create_parent_irq_domain() helper
irqchip/bcm2712-mip: Switch to msi_create_parent_irq_domain()
irqdomain: Add device pointer to irq_domain_info and msi_domain_info
irqchip/renesas-rzv2h: Remove unneeded includes
irqchip/renesas-rzv2h: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
irqchip/aslint-sswi: Resolve hart index
...
|
||
|
Linus Torvalds
|
9669b2499e |
platform-drivers-x86 for v6.17-1
Highlights
- alienware: Add more precise labels to fans
- amd/hsmp: Improve misleading probe errors (make the legacy driver
aware when HSMP is supported through the ACPI driver)
- amd/pmc: Add Lenovo Yoga 6 13ALCL6 to pmc quirk list
- drm/xe: Correct (D)VSEC information to support PMT crashlog feature
- fujitsu: Clamp charge threshold instead of returning an error
- ideapad: Expore change types
- intel/pmt:
- Add PMT Discovery driver
- Add API to retrieve telemetry regions by feature
- Fix crashlog NULL access
- Support Battlemage GPU (BMG) crashlog
- intel/vsec:
- Add Discovery feature
- Add feature dependency support using device links
- lenovo:
- Move lenovo drivers under drivers/platform/x86/lenovo/
- Add WMI drivers for Lenovo Gaming series
- Improve DMI handling
- oxpec:
- Add support for OneXPlayer X1 Mini Pro (Strix Point variant)
- Fix EC registers for G1 AMD
- samsung-laptop: Expose change types
- wmi: Fix WMI device naming issue (same GUID corner cases)
- x86-android-tables: Add ovc-capacity-table to generic battery nodes
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
Add Lenovo Capability Data 01 WMI Driver:
- Add Lenovo Capability Data 01 WMI Driver
Add Lenovo Gamezone WMI Driver:
- Add Lenovo Gamezone WMI Driver
Add Lenovo Other Mode WMI Driver:
- Add Lenovo Other Mode WMI Driver
Add lenovo-wmi-* driver Documentation:
- Add lenovo-wmi-* driver Documentation
Add Lenovo WMI Events Driver:
- Add Lenovo WMI Events Driver
Add lenovo-wmi-helpers:
- Add lenovo-wmi-helpers
alienware-wmi-wmax:
- Add appropriate labels to fans
amd/hsmp:
- Enhance the print messages to prevent confusion
- Use IS_ENABLED() instead of IS_REACHABLE()
amd: pmc:
- Add Lenovo Yoga 6 13ALC6 to pmc quirk list
arm64: lenovo-yoga-c630:
- use the auxiliary device creation helper
dell_rbu:
- Remove unused struct
dell-uart-backlight:
- Use blacklight power constant
docs:
- Add ABI documentation for intel_pmt feature directories
Documentation: ABI:
- Update WMI device paths in ABI docs
drm/xe:
- Correct BMG VSEC header sizing
- Correct the rev value for the DVSEC entries
fujitsu:
- clamp charge_control_end_threshold values to 50
- use unsigned int for kstrtounit
ideapad:
- Expose charge_types
intel/pmt:
- Add PMT Discovery driver
- add register access helpers
- correct types
- decouple sysfs and namespace
intel/pmt/discovery:
- fix format string warning
- Fix size_t specifiers for 32-bit
- Get telemetry attributes
intel/pmt:
- fix a crashlog NULL pointer access
- fix build dependency for kunit test
- KUNIT test for PMT Enhanced Discovery API
- mutex clean up
- refactor base parameter
- re-order trigger logic
- support BMG crashlog
intel/pmt/telemetry:
- Add API to retrieve telemetry regions by feature
intel/pmt:
- use a version struct
- use guard(mutex)
- white space cleanup
intel_telemetry:
- Remove unused telemetry_*_events()
- Remove unused telemetry_[gs]et_sampling_period()
- Remove unused telemetry_raw_read_events()
intel/tpmi:
- Get OOBMSM CPU mapping from TPMI
- Relocate platform info to intel_vsec.h
intel/vsec:
- Add device links to enforce dependencies
- Add new Discovery feature
- Add private data for per-device data
- Create wrapper to walk PCI config space
- Set OOBMSM to CPU mapping
- Skip absent features during initialization
- Skip driverless features
lenovo:
- gamezone needs "other mode"
lenovo-yoga-tab2-pro-1380-fastcharger:
- Use devm_pinctrl_register_mappings()
MAINTAINERS:
- Add link to documentation of Intel PMT ABI
Move Lenovo files into lenovo subdir:
- Move Lenovo files into lenovo subdir
oxpec:
- Add support for OneXPlayer X1 Mini Pro (Strix Point)
- Fix turbo register for G1 AMD
samsung-laptop:
- Expose charge_types
silicom:
- remove unnecessary GPIO line direction check
thinklmi:
- improved DMI handling
thinkpad_acpi:
- Handle KCOV __init vs inline mismatches
wmi:
- Fix WMI device naming issue
x86-android-tablets:
- Add generic_lipo_4v2_battery info
- Add ovc-capacity-table info
Merges:
- Merge branch 'fixes' into 'for-next'
- Merge branch 'fixes' into for-next
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Merge tag 'platform-drivers-x86-v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers from Ilpo Järvinen:
- alienware: Add more precise labels to fans
- amd/hsmp: Improve misleading probe errors (make the legacy driver
aware when HSMP is supported through the ACPI driver)
- amd/pmc: Add Lenovo Yoga 6 13ALCL6 to pmc quirk list
- drm/xe: Correct (D)VSEC information to support PMT crashlog feature
- fujitsu: Clamp charge threshold instead of returning an error
- ideapad: Expore change types
- intel/pmt:
- Add PMT Discovery driver
- Add API to retrieve telemetry regions by feature
- Fix crashlog NULL access
- Support Battlemage GPU (BMG) crashlog
- intel/vsec:
- Add Discovery feature
- Add feature dependency support using device links
- lenovo:
- Move lenovo drivers under drivers/platform/x86/lenovo/
- Add WMI drivers for Lenovo Gaming series
- Improve DMI handling
- oxpec:
- Add support for OneXPlayer X1 Mini Pro (Strix Point variant)
- Fix EC registers for G1 AMD
- samsung-laptop: Expose change types
- wmi: Fix WMI device naming issue (same GUID corner cases)
- x86-android-tables: Add ovc-capacity-table to generic battery nodes
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (63 commits)
platform/x86: oxpec: Add support for OneXPlayer X1 Mini Pro (Strix Point)
platform/x86: oxpec: Fix turbo register for G1 AMD
platform/x86/intel/pmt: support BMG crashlog
platform/x86/intel/pmt: use a version struct
platform/x86/intel/pmt: refactor base parameter
platform/x86/intel/pmt: add register access helpers
platform/x86/intel/pmt: decouple sysfs and namespace
platform/x86/intel/pmt: correct types
platform/x86/intel/pmt: re-order trigger logic
platform/x86/intel/pmt: use guard(mutex)
platform/x86/intel/pmt: mutex clean up
platform/x86/intel/pmt: white space cleanup
drm/xe: Correct BMG VSEC header sizing
drm/xe: Correct the rev value for the DVSEC entries
platform/x86/intel/pmt: fix a crashlog NULL pointer access
platform/x86: samsung-laptop: Expose charge_types
platform/x86/amd: pmc: Add Lenovo Yoga 6 13ALC6 to pmc quirk list
platform/x86: dell-uart-backlight: Use blacklight power constant
platform/x86/intel/pmt: fix build dependency for kunit test
platform/x86: lenovo: gamezone needs "other mode"
...
|
||
|
Linus Torvalds
|
fcb117e075 |
gpio updates for v6.17-rc1
GPIOLIB core:
- introduce a parallel, limited sysfs user ABI that doesn't expose the
global GPIO numbers to user-space while maintaining backward
compatibility with the end goal of it completely replacing the existing
interface, allowing us to remove it
- remove the legacy devm_gpio_request() routine which has no more users
- start the process of allowing to compile-out the legacy parts of the
GPIO core for users who don't need it by introducing a new Kconfig
option: GPIOLIB_LEGACY
- don't use global GPIO numbers in debugfs output from the core code
(drivers still do it, the work is ongoing)
- start the process of moving the fields specific to the gpio-mmio helper
out of the core struct gpio_chip into their own structure that wraps
it: create a new header with modern interfaces and convert several
drivers to using it
- remove the platform data structure associated with the gpio-mmio helper
from the kernel after having converted all remaining users to generic
device properties
- remove legacy struct gpio definition as it has no more users
New drivers:
- add the GPIO driver for the Apple System Management Controller
Driver improvements:
- add support for new models to gpio-adp5585, gpio-tps65219 and
gpio-pca953x
- extend the interrupt support in gpio-loongson-64bit
- allow to mark the simulated GPIO lines as invalid in gpio-sim
- convert all remaining GPIO drivers to using the new GPIO value setter
callbacks
- convert gpio-rcar to using simple device power management ops callbacks
- don't check if current direction of a line is output before setting
the value in gpio-pisosr and ti-fpc202: the GPIO core already handles
that
- also drop unneeded GPIO range checks in drivers, the core already makes
sure we're within bounds when calling driver callbacks
- use dev_fwnode() where applicable across GPIO drivers
- set line value in gpio-zynqmp-modepin and gpio-twl6040 when the user
wants to change direction of the pin to output even though these
drivers don't need to do anything else to actually set the direction,
otherwise a call like gpiod_direction_output(d, 1) will not result in
the line driver high
- remove the reduntant call to pm_runtime_mark_last_busy() from
gpio-arizona
- use lock guards in gpio-cadence and gpio-mxc
- check the return values of regmap functions in gpio-wcd934x and
gpio-tps65912
- use better regmap interfaces in gpio-wcove and gpio-pca953x
- remove dummy GPIO chip callbacks from several drivers in cases where
the GPIO core can already handle their absence
- allow building gpio-palmas as a module
Fixes:
- use correct bit widths (according to the documentation) in gpio-virtio
Device-tree bindings:
- convert several of the legacy .txt documents for many different devices
to YAML, improving automatic validation
- create a "trivial" GPIO DT schema that covers a wide range of simple
hardware that share a set of basic GPIO properties
- document new HW: Apple MAC SMC GPIO block and adp5589 I/O expander
- document a new model for pca95xx
- add and/or remove properties in YAML documents for gpio-rockchip,
fsl,qoriq-gpio, arm,pl061 and gpio-xilinx
Misc:
- some minor refactoring in several places, adding/removing forward
declarations, moving defines to better places, constify the arguments
in some functions, remove duplicate includes, etc.
- documentation updates
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Merge tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"There's one new driver (Apple SMC) and extensions to existing drivers
for supporting new HW models. A lot of different impovements across
drivers and in core GPIO code. Details on that are in the signed tag
as usual.
We managed to remove some of the legacy APIs. Arnd Bergmann started to
work on making the legacy bits optional so that we may compile them
only for older platforms that still really need them.
Rob Herring has done a lot of work to convert legacy .txt dt-bindings
for GPIO controllers to YAML. There are only a few left now in the
GPIO tree.
A big part of the commits in this PR concern the conversion of GPIO
drivers to using the new line value setter callbacks. This conversion
is now complete treewide (unless I've missed something) and once all
the changes from different trees land in mainline, I'll send you
another PR containing a commit dropping the legacy callbacks from the
tree.
As the quest to pay back technical dept never really ends, we're
starting another set of interface conversions, this time it's about
moving fields specific to only a handful of drivers using the
gpio-mmio helper out of the core gpio_chip structure that every
controller implements and uses. This cycle we introduce a new set of
APIs and convert a few drivers under drivers/gpio/, next cycle we'll
convert remaining modules treewide (in gpio, pinctrl and mfd trees)
and finally remove the old interfaces and move the gpio-mmio fields
into their own structure wrapping gpio_chip.
One last change I should mention here is the rework of the sysfs
interface. In 2016, we introduced the GPIO character device as the
preferred alternative to the sysfs class under /sys/class/gpio. While
it has seen a wide adoption with the help of its user-space
counterpart - libgpiod - there are still users who prefer the
simplicity of sysfs.
As far as the GPIO subsystem is concerned, the problem is not the
existince of the GPIO class as such but rather the fact that it
exposes the global GPIO numbers to the user-space, stopping us from
ever being able to remove the numberspace from the kernel. To that
end, this release we introduced a parallel, limited sysfs interface
that doesn't expose these numbers and only implements a subset of
features that are relevant to the existing users. This is a result of
several discussions over the course of last year and should allow us
to remove the legacy part some time in the future.
Summary:
GPIOLIB core:
- introduce a parallel, limited sysfs user ABI that doesn't expose
the global GPIO numbers to user-space while maintaining backward
compatibility with the end goal of it completely replacing the
existing interface, allowing us to remove it
- remove the legacy devm_gpio_request() routine which has no more
users
- start the process of allowing to compile-out the legacy parts of
the GPIO core for users who don't need it by introducing a new
Kconfig option: GPIOLIB_LEGACY
- don't use global GPIO numbers in debugfs output from the core code
(drivers still do it, the work is ongoing)
- start the process of moving the fields specific to the gpio-mmio
helper out of the core struct gpio_chip into their own structure
that wraps it: create a new header with modern interfaces and
convert several drivers to using it
- remove the platform data structure associated with the gpio-mmio
helper from the kernel after having converted all remaining users
to generic device properties
- remove legacy struct gpio definition as it has no more users
New drivers:
- add the GPIO driver for the Apple System Management Controller
Driver improvements:
- add support for new models to gpio-adp5585, gpio-tps65219 and
gpio-pca953x
- extend the interrupt support in gpio-loongson-64bit
- allow to mark the simulated GPIO lines as invalid in gpio-sim
- convert all remaining GPIO drivers to using the new GPIO value
setter callbacks
- convert gpio-rcar to using simple device power management ops
callbacks
- don't check if current direction of a line is output before setting
the value in gpio-pisosr and ti-fpc202: the GPIO core already
handles that
- also drop unneeded GPIO range checks in drivers, the core already
makes sure we're within bounds when calling driver callbacks
- use dev_fwnode() where applicable across GPIO drivers
- set line value in gpio-zynqmp-modepin and gpio-twl6040 when the
user wants to change direction of the pin to output even though
these drivers don't need to do anything else to actually set the
direction, otherwise a call like gpiod_direction_output(d, 1) will
not result in the line driver high
- remove the reduntant call to pm_runtime_mark_last_busy() from
gpio-arizona
- use lock guards in gpio-cadence and gpio-mxc
- check the return values of regmap functions in gpio-wcd934x and
gpio-tps65912
- use better regmap interfaces in gpio-wcove and gpio-pca953x
- remove dummy GPIO chip callbacks from several drivers in cases
where the GPIO core can already handle their absence
- allow building gpio-palmas as a module
Fixes:
- use correct bit widths (according to the documentation) in
gpio-virtio
Device-tree bindings:
- convert several of the legacy .txt documents for many different
devices to YAML, improving automatic validation
- create a "trivial" GPIO DT schema that covers a wide range of
simple hardware that share a set of basic GPIO properties
- document new HW: Apple MAC SMC GPIO block and adp5589 I/O expander
- document a new model for pca95xx
- add and/or remove properties in YAML documents for gpio-rockchip,
fsl,qoriq-gpio, arm,pl061 and gpio-xilinx
Misc:
- some minor refactoring in several places, adding/removing forward
declarations, moving defines to better places, constify the
arguments in some functions, remove duplicate includes, etc.
- documentation updates"
* tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (202 commits)
MIPS: alchemy: gpio: use new GPIO line value setter callbacks for the remaining chips
gpiolib: enable CONFIG_GPIOLIB_LEGACY even for !GPIOLIB
gpio: virtio: Fix config space reading.
gpiolib: make legacy interfaces optional
dt-bindings: gpio: rockchip: Allow use of a power-domain
gpiolib: of: add forward declaration for struct device_node
power: reset: macsmc-reboot: Add driver for rebooting via Apple SMC
gpio: Add new gpio-macsmc driver for Apple Macs
mfd: Add Apple Silicon System Management Controller
soc: apple: rtkit: Make shmem_destroy optional
dt-bindings: mfd: Add Apple Mac System Management Controller
dt-bindings: power: reboot: Add Apple Mac SMC Reboot Controller
dt-bindings: gpio: Add Apple Mac SMC GPIO block
gpio: cadence: Remove duplicated include in gpio-cadence.c
gpio: tps65219: Add support for TI TPS65214 PMIC
gpio: tps65219: Update _IDX & _OFFSET macro prefix
gpio: sysfs: Fix an end of loop test in gpiod_unexport()
dt-bindings: gpio: Convert qca,ar7100-gpio to DT schema
dt-bindings: gpio: Convert maxim,max3191x to DT schema
dt-bindings: gpio: fsl,qoriq-gpio: Add missing mpc8xxx compatibles
...
|
||
|
Linus Torvalds
|
53edfecef6 |
Power management updates for 6.17-rc1
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate cpufreq
driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix MAINTAINERS
entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver (Prashant
Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT cpuidle
driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the device
suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in the
runtime PM framework and update its documentation (Sakari Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power capping
driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You Use)
principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make the
driver core detach PM domains in device_unbind_cleanup(), and drop
the dev_pm_domain_detach() call from the platform bus type (Claudiu
Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham Shenoy)
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Merge tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"As is tradition, cpufreq is the part with the largest number of
updates that include core fixes and cleanups as well as updates of
several assorted drivers, but there are also quite a few updates
related to system sleep, mostly focused on asynchronous suspend and
resume of devices and on making the integration of system suspend
and resume with runtime PM easier.
Runtime PM is also updated to allow some code duplication in drivers
to be eliminated going forward and to work more consistently overall
in some cases.
Apart from that, there are some driver core updates related to PM
domains that should help to address ordering issues with devm_ cleanup
routines relying on PM domains, some assorted devfreq updates
including core fixes and cleanups, tooling updates, and documentation
and MAINTAINERS updates.
Specifics:
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate
cpufreq driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron
Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix
MAINTAINERS entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas
Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver
(Prashant Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT
cpuidle driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the
device suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in
the runtime PM framework and update its documentation (Sakari
Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power
capping driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You
Use) principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make
the driver core detach PM domains in device_unbind_cleanup(), and
drop the dev_pm_domain_detach() call from the platform bus type
(Claudiu Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham
Shenoy)"
* tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (75 commits)
cpufreq: CPPC: Mark driver with NEED_UPDATE_LIMITS flag
PM: docs: Use my kernel.org address in ABI docs and DT bindings
PM: hibernate: Fix up white space that does not follow coding style
PM: sleep: Rearrange suspend/resume error handling in the core
Documentation: amd-pstate:fix minimum performance state label error
PM: runtime: Take active children into account in pm_runtime_get_if_in_use()
kexec_core: Drop redundant pm_restore_gfp_mask() call
kexec_core: Fix error code path in the KEXEC_JUMP flow
PM: sleep: Clean up MAINTAINERS entries for suspend and hibernation
drivers: cpufreq: add Tegra114 support
rust: cpumask: Replace `MaybeUninit` and `mem::zeroed` with `Opaque` APIs
cpufreq: Exit governor when failed to start old governor
cpufreq: Move the check of cpufreq_driver->get into cpufreq_verify_current_freq()
cpufreq: Init policy->rwsem before it may be possibly used
cpufreq: Initialize cpufreq-based frequency-invariance later
cpufreq: Remove duplicate check in __cpufreq_offline()
cpufreq: Contain scaling_cur_freq.attr in cpufreq_attrs
cpufreq: intel_pstate: Add Granite Rapids support in no-HWP mode
cpufreq: intel_pstate: Always use HWP_DESIRED_PERF in passive mode
PM / devfreq: Add HiSilicon uncore frequency scaling driver
...
|
||
|
Linus Torvalds
|
dffb641bea |
selinux/stable-6.17 PR 20250725
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmiD08EUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXOFzRAAwTbLKcFggDs0bG6AfqT5KCQHRtRW z/0+kvDZeKzJvmJ4XvNMdW3orC2iIYgGCYJgj8umEXh1BOGIOSd4edpGaUKvJB9Z S4py0I3udGjlchInmDBZqW2qGaN0EAl/s0AWBbf6QLYmMV1r9+nb5lH71pVBbEQv 4Vltg61KkQPc6PuDpk7F+BD7yYKSCqxxWyy7zEJsFMntg4jCyoI2PfRhrHM5xuCE RRqctblhCc4nNqzhPvse4Vt9PD+cVQx0Pi7arxvSD8M7mVrFTsUV17OoSKlCcLGh 1LlFk7heoDNC/UQy7xFg5hsy8GeI6gYYY/Fomu7Ue3SYJL2fqqr7xsbJyCCNg8kC S17gRPBxqftzl/2SE76V8y5toIRMtT7b+6aXudtukfFbxtBq09XNflq1G3iR9fTo o6f9MGpyWW3t/e8wk2yPYfXNXrLe3yJoxV6lIsDaHejOwGi098ArcahKKuxNzRit AikIoqn8GEO+j3/X/4YS1xbdS/HkG7N3t+Rbr2GNO4XsmU6iqZRBkmz5UlCcL8u1 OTQNjzqqSy/DKAfrPAyqN7wiBVXt5siBPwAXIcPbh9JfAI/kRN7LUxAQeGnUps+o kJn2zCV3G4kD2qtCVCQ7VifIYGCMxa1PTYsiwu5S4Wgm1Ducvtsx4r3TVKiCuObC bwv/1k9kpkvLy/E= =M55j -----END PGP SIGNATURE----- Merge tag 'selinux-pr-20250725' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux Pull selinux updates from Paul Moore: - Introduce the concept of a SELinux "neveraudit" type which prevents all auditing of the given type/domain. Taken by itself, the benefit of marking a SELinux domain with the "neveraudit" tag is likely not very interesting, especially given the significant overlap with the "dontaudit" tag. However, given that the "neveraudit" tag applies to *all* auditing of the tagged domain, we can do some fairly interesting optimizations when a SELinux domain is marked as both "permissive" and "dontaudit" (think of the unconfined_t domain). While this pull request includes optimized inode permission and getattr hooks, these optimizations require SELinux policy changes, therefore the improvements may not be visible on standard downstream Linux distos for a period of time. - Continue the deprecation process of /sys/fs/selinux/user. After removing the associated userspace code in 2020, we marked the /sys/fs/selinux/user interface as deprecated in Linux v6.13 with pr_warn() and the usual documention update. This adds a five second sleep after the pr_warn(), following a previous deprecation process pattern that has worked well for us in the past in helping identify any existing users that we haven't yet reached. - Add a __GFP_NOWARN flag to our initial hash table allocation. Fuzzers such a syzbot often attempt abnormally large SELinux policy loads, which the SELinux code gracefully handles by checking for allocation failures, but not before the allocator emits a warning which causes the automated fuzzing to flag this as an error and report it to the list. While we want to continue to support the work done by the fuzzing teams, we want to focus on proper issues and not an error case that is already handled safely. Add a NOWARN flag to quiet the allocator and prevent syzbot from tripping on this again. - Remove some unnecessary selinuxfs cleanup code, courtesy of Al. - Update the SELinux in-kernel documentation with pointers to additional information. * tag 'selinux-pr-20250725' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: don't bother with selinuxfs_info_free() on failures selinux: add __GFP_NOWARN to hashtab_init() allocations selinux: optimize selinux_inode_getattr/permission() based on neveraudit|permissive selinux: introduce neveraudit types documentation: add links to SELinux resources selinux: add a 5 second sleep to /sys/fs/selinux/user |
||
|
Linus Torvalds
|
4d40b59d8b |
Hi,
This PR has quite a few commits but nothing really that would be worth of spending too much time for, or would want to emphasize in particular. BR, Jarkko -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRE6pSOnaBC00OEHEIaerohdGur0gUCaIAmHQAKCRAaerohdGur 0pBVAP94mutr2EyDyvJWpzej0fWROHzL1EkJacuKxmabt7HnJgEA9H8Ug6OoAdKq V1v+Z9iL1wrQ3Yfp28vHhdrAQUgDJgA= =cjP7 -----END PGP SIGNATURE----- Merge tag 'tpmdd-next-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull tpm updates from Jarkko Sakkinen: "Quite a few commits but nothing really that would be worth of spending too much time for, or would want to emphasize in particular" * tag 'tpmdd-next-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: tpm_crb_ffa: handle tpm busy return code tpm_crb_ffa: Remove memset usage tpm_crb_ffa: Fix typos in function name tpm: Check for completion after timeout tpm: Use of_reserved_mem_region_to_resource() for "memory-region" tpm: Replace scnprintf() with sysfs_emit() and sysfs_emit_at() in sysfs show functions tpm_crb_ffa: Remove unused export tpm: tpm_crb_ffa: try to probe tpm_crb_ffa when it's built-in firmware: arm_ffa: Change initcall level of ffa_init() to rootfs_initcall tpm/tpm_svsm: support TPM_CHIP_FLAG_SYNC tpm/tpm_ftpm_tee: support TPM_CHIP_FLAG_SYNC tpm: support devices with synchronous send() tpm: add bufsiz parameter in the .send callback |
||
|
Linus Torvalds
|
8e736a2eea |
hardening updates for v6.17-rc1
- Introduce and start using TRAILING_OVERLAP() helper for fixing embedded flex array instances (Gustavo A. R. Silva) - mux: Convert mux_control_ops to a flex array member in mux_chip (Thorsten Blum) - string: Group str_has_prefix() and strstarts() (Andy Shevchenko) - Remove KCOV instrumentation from __init and __head (Ritesh Harjani, Kees Cook) - Refactor and rename stackleak feature to support Clang - Add KUnit test for seq_buf API - Fix KUnit fortify test under LTO -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaIfUkgAKCRA2KwveOeQk uypLAP92r6f47sWcOw/5B9aVffX6Bypsb7dqBJQpCNxI5U1xcAEAiCrZ98UJyOeQ JQgnXd4N67K4EsS2JDc+FutRn3Yi+A8= =+5Bq -----END PGP SIGNATURE----- Merge tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: - Introduce and start using TRAILING_OVERLAP() helper for fixing embedded flex array instances (Gustavo A. R. Silva) - mux: Convert mux_control_ops to a flex array member in mux_chip (Thorsten Blum) - string: Group str_has_prefix() and strstarts() (Andy Shevchenko) - Remove KCOV instrumentation from __init and __head (Ritesh Harjani, Kees Cook) - Refactor and rename stackleak feature to support Clang - Add KUnit test for seq_buf API - Fix KUnit fortify test under LTO * tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits) sched/task_stack: Add missing const qualifier to end_of_stack() kstack_erase: Support Clang stack depth tracking kstack_erase: Add -mgeneral-regs-only to silence Clang warnings init.h: Disable sanitizer coverage for __init and __head kstack_erase: Disable kstack_erase for all of arm compressed boot code x86: Handle KCOV __init vs inline mismatches arm64: Handle KCOV __init vs inline mismatches s390: Handle KCOV __init vs inline mismatches arm: Handle KCOV __init vs inline mismatches mips: Handle KCOV __init vs inline mismatch powerpc/mm/book3s64: Move kfence and debug_pagealloc related calls to __init section configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON configs/hardening: Enable CONFIG_KSTACK_ERASE stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth stackleak: Rename STACKLEAK to KSTACK_ERASE seq_buf: Introduce KUnit tests string: Group str_has_prefix() and strstarts() kunit/fortify: Add back "volatile" for sizeof() constants acpi: nfit: intel: avoid multiple -Wflex-array-member-not-at-end warnings ... |
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Lorenzo Stoakes
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a27848a035 |
docs: update THP documentation to clarify sysfs "never" setting
Rather confusingly, setting all Transparent Huge Page sysfs settings to "never" does not in fact result in THP being globally disabled. Rather, it results in khugepaged being disabled, but one can still obtain THP pages using madvise(..., MADV_COLLAPSE). This is something that has remained poorly documented for some time, and it is likely the received wisdom of most users of THP that never does, in fact, mean never. It is therefore important to highlight, very clearly, that this is not the case. [lorenzo.stoakes@oracle.com: update transhuge page to mention MADV_COLLAPSE] Link: https://lkml.kernel.org/r/d54d1dfb-f06d-4979-983b-73998f05867e@lucifer.local Link: https://lkml.kernel.org/r/20250721155530.75944-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: SeongJae Park <sj@kernel.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Barry Song <baohua@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mariano Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
e85e965bdb |
Docs/admin-guide/mm/damon/usage: document refresh_ms file
Document the new DAMON sysfs file, refresh_ms, on the usage document. Link: https://lkml.kernel.org/r/20250717055448.56976-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Joel Granados
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ffc137c5c1 |
docs: Downgrade arm64 & riscv from titles to comment
Remove the title string ("====") from under arm64 & riscv and move them
to a commment under the perf_user_access sysctl. They are explanations,
*not* sysctls themselves
This effectively removes these two strings from appearing as not
implemented when the check-sysctl-docs script is run
Signed-off-by: Joel Granados <joel.granados@kernel.org>
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Joel Granados
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30ec9fde45 |
docs: Remove colon from ctltable title in vm.rst
Removing them solves an issue where they were incorrectly considered as not implemented by the check-sysctl-docs script Signed-off-by: Joel Granados <joel.granados@kernel.org> |
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Prachotan Bathi
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7f0c6675b3 |
tpm_crb_ffa: handle tpm busy return code
Platforms supporting direct message request v2 [1] can support secure partitions that support multiple services. For CRB over FF-A interface, if the firmware TPM or TPM service [1] shares its Secure Partition (SP) with another service, message requests may fail with a -EBUSY error. To handle this, replace the single check and call with a retry loop that attempts the TPM message send operation until it succeeds or a configurable timeout is reached. Implement a _try_send_receive function to do a single send/receive and modify the existing send_receive to add this retry loop. The retry mechanism introduces a module parameter (`busy_timeout_ms`, default: 2000ms) to control how long to keep retrying on -EBUSY responses. Between retries, the code waits briefly (50-100 microseconds) to avoid busy-waiting and handling TPM BUSY conditions more gracefully. The parameter can be modified at run-time as such: echo 3000 | tee /sys/module/tpm_crb_ffa/parameters/busy_timeout_ms This changes the timeout from the default 2000ms to 3000ms. [1] TPM Service Command Response Buffer Interface Over FF-A https://developer.arm.com/documentation/den0138/latest/ Signed-off-by: Prachotan Bathi <prachotan.bathi@arm.com> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
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Rafael J. Wysocki
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c4930d6dba |
Merge branch 'pm-sleep'
Merge updates related to system sleep for 6.17-rc1: - Extend the asynchronous suspend and resume of devices to handle suppliers like parents and consumers like children (Rafael Wysocki) - Make pm_runtime_force_resume() work for drivers that set the DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that collaborate with the general ACPI PM domain to set it (Rafael Wysocki) - Add kernel parameter to disable asynchronous suspend/resume of devices (Tudor Ambarus) - Drop redundant might_sleep() calls from some functions in the device suspend/resume core code (Zhongqiu Han) - Fix the handling of monitors connected right before waking up the system from sleep (tuhaowen) - Clean up MAINTAINERS entries for suspend and hibernation (Rafael Wysocki) - Fix error code path in the KEXEC_JUMP flow and drop a redundant pm_restore_gfp_mask() call from it (Rafael Wysocki) - Rearrange suspend/resume error handling in the core device suspend and resume code (Rafael Wysocki) - Fix up white space that does not follow coding style in the hibernation core code (Darshan Rathod) * pm-sleep: PM: hibernate: Fix up white space that does not follow coding style PM: sleep: Rearrange suspend/resume error handling in the core kexec_core: Drop redundant pm_restore_gfp_mask() call kexec_core: Fix error code path in the KEXEC_JUMP flow PM: sleep: Clean up MAINTAINERS entries for suspend and hibernation PM: sleep: add kernel parameter to disable asynchronous suspend/resume PCI/PM: Set power.strict_midlayer in pci_pm_init() ACPI: PM: Set/clear power.strict_midlayer in prepare/complete PM: sleep: Add strict_midlayer flag to struct dev_pm_info PM: runtime: Introduce __rpm_get_driver_callback() PM: Check power.needs_force_resume in pm_runtime_force_suspend() PM: runtime: Clear power.needs_force_resume in pm_runtime_reinit() PM: Make pm_runtime_force_resume() work with DPM_FLAG_SMART_SUSPEND PM: Move two sleep-related functions under CONFIG_PM_SLEEP PM: Use true/false as power.needs_force_resume values PM: sleep: Make async suspend handle suppliers like parents PM: sleep: Make async resume handle consumers like children PM: sleep: Drop superfluous might_sleep() calls PM: sleep: console: Fix the black screen issue |
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Kees Cook
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57fbad15c2 |
stackleak: Rename STACKLEAK to KSTACK_ERASE
In preparation for adding Clang sanitizer coverage stack depth tracking that can support stack depth callbacks: - Add the new top-level CONFIG_KSTACK_ERASE option which will be implemented either with the stackleak GCC plugin, or with the Clang stack depth callback support. - Rename CONFIG_GCC_PLUGIN_STACKLEAK as needed to CONFIG_KSTACK_ERASE, but keep it for anything specific to the GCC plugin itself. - Rename all exposed "STACKLEAK" names and files to "KSTACK_ERASE" (named for what it does rather than what it protects against), but leave as many of the internals alone as possible to avoid even more churn. While here, also split "prev_lowest_stack" into CONFIG_KSTACK_ERASE_METRICS, since that's the only place it is referenced from. Suggested-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20250717232519.2984886-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Feng Tang
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ee13240cd7 |
panic: add note that panic_print sysctl interface is deprecated
Add a dedicated core parameter 'panic_console_replay' for controlling console replay, and add note that 'panic_print' sysctl interface will be obsoleted by 'panic_sys_info' and 'panic_console_replay'. When it happens, the SYS_INFO_PANIC_CONSOLE_REPLAY can be removed as well. Link: https://lkml.kernel.org/r/20250703021004.42328-6-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
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9743d12d0c |
panic: add 'panic_sys_info=' setup option for kernel cmdline
'panic_sys_info=' sysctl interface is already added for runtime setting. Add counterpart kernel cmdline option for boottime setting. Link: https://lkml.kernel.org/r/20250703021004.42328-5-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
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d747755917 |
panic: add 'panic_sys_info' sysctl to take human readable string parameter
Bitmap definition for 'panic_print' is hard to remember and decode. Add 'panic_sys_info='sysctl to take human readable string like "tasks,mem,timers,locks,ftrace,..." and translate it into bitmap. The detailed mapping is: SYS_INFO_TASKS "tasks" SYS_INFO_MEM "mem" SYS_INFO_TIMERS "timers" SYS_INFO_LOCKS "locks" SYS_INFO_FTRACE "ftrace" SYS_INFO_ALL_CPU_BT "all_bt" SYS_INFO_BLOCKED_TASKS "blocked_tasks" [nathan@kernel.org: add __maybe_unused to sys_info_avail] Link: https://lkml.kernel.org/r/20250708-fix-clang-sys_info_avail-warning-v1-1-60d239eacd64@kernel.org Link: https://lkml.kernel.org/r/20250703021004.42328-4-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
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261743b013 |
panic: clean up code for console replay
Patch series "generalize panic_print's dump function to be used by other kernel parts", v3. When working on kernel stability issues, panic, task-hung and software/hardware lockup are frequently met. And to debug them, user may need lots of system information at that time, like task call stacks, lock info, memory info etc. panic case already has panic_print_sys_info() for this purpose, and has a 'panic_print' bitmask to control what kinds of information is needed, which is also helpful to debug other task-hung and lockup cases. So this patchset extracts the function out to a new file 'lib/sys_info.c', and makes it available for other cases which also need to dump system info for debugging. Also as suggested by Petr Mladek, add 'panic_sys_info=' interface to take human readable string like "tasks,mem,locks,timers,ftrace,....", and eventually obsolete the current 'panic_print' bitmap interface. In RFC and V1 version, hung_task and SW/HW watchdog modules are enabled with the new sys_info dump interface. In v2, they are kept out for better review of current change, and will be posted later. Locally these have been used in our bug chasing for stability issues and was proven helpful. Many thanks to Petr Mladek for great suggestions on both the code and architectures! This patch (of 5): Currently the panic_print_sys_info() was called twice with different parameters to handle console replay case, which is kind of confusing. Add panic_console_replay() explicitly and rename 'PANIC_PRINT_ALL_PRINTK_MSG' to 'PANIC_CONSOLE_REPLAY', to make the code straightforward. The related kernel document is also updated. Link: https://lkml.kernel.org/r/20250703021004.42328-1-feng.tang@linux.alibaba.com Link: https://lkml.kernel.org/r/20250703021004.42328-2-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jiri Bohac
|
ce1bf19a34 |
kdump, documentation: describe craskernel CMA reservation
Describe the new crashkernel ",cma" suffix in Documentation/ Link: https://lkml.kernel.org/r/aEqpQwUy6gqSiUkV@dwarf.suse.cz Signed-off-by: Jiri Bohac <jbohac@suse.cz> Cc: Baoquan He <bhe@redhat.com> Cc: Dave Young <dyoung@redhat.com> Cc: David Hildenbrand <david@redhat.com> Cc: Donald Dutile <ddutile@redhat.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Philipp Rudo <prudo@redhat.com> Cc: Pingfan Liu <piliu@redhat.com> Cc: Tao Liu <ltao@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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3a4785c2d3 |
Docs/admin-guide/mm/damon/usage: document dests directory
Document the newly added DAMOS action destination directory of the DAMON sysfs interface on the usage document. Link: https://lkml.kernel.org/r/20250709005952.17776-7-bijan311@gmail.com Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Bijan Tabatabai <bijantabatab@micron.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ravi Shankar Jonnalagadda <ravis.opensrc@micron.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Michal Koutný
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646faf36d7 |
cgroup: Add compatibility option for content of /proc/cgroups
/proc/cgroups lists only v1 controllers by default, however, this is only enforced since the commit |
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Anup Patel
|
ea92b6046d |
irqchip/riscv-imsic: Add kernel parameter to disable IPIs
When injecting IPIs to a set of harts, the IMSIC IPI support will do a separate MMIO write to the SETIPNUM_LE register of each target hart. This means on a platform where IMSIC is trap-n-emulated, there will be N MMIO traps when injecting IPI to N target harts hence IMSIC IPIs will be slow on such platforms compared to the SBI IPI extension. Unfortunately, there is no DT, ACPI, or any other way of discovering whether the underlying IMSIC is trap-n-emulated. Using MMIO write to the SETIPNUM_LE register for injecting IPI is purely a software choice in the IMSIC driver hence add a kernel parameter to allow users to disable IMSIC IPIs on platforms with trap-n-emulated IMSIC. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250716123745.557585-1-apatel@ventanamicro.com |
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Breno Leitao
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2a1390c813 |
docs: kernel: Clarify printk_ratelimit_burst reset behavior
Add clarification that the printk_ratelimit_burst window resets after printk_ratelimit seconds have elapsed, allowing another burst of messages to be sent. This helps users understand that the rate limiting is not permanent but operates in periodic windows. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250714-docs_ratelimit-v1-1-51a6d9071f1a@debian.org |
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Rafael J. Wysocki
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4f95b5bad6 | Merge back earlier cpufreq material for 6.17-rc1 | ||
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Rafael J. Wysocki
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7c1f7c22e6 | Merge back earlier material related to system sleep | ||
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shouyeliu
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efbc5b4ac9 |
Documentation: amd-pstate:fix minimum performance state label error
In the AMD P-States Performance Scale diagram, the labels for "Max Perf" and "Lowest Perf" were incorrectly used to define the range for "Desired Perf".The "Desired performance target" should be bounded by the "Maximum requested performance" and the "Minimum requested performance", which corresponds to "Max Perf" and "Min Perf", respectively. Signed-off-by: Shouye Liu <shouyeliu@tencent.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20250522070140.17557-1-shouyeliu@gmail.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Uladzislau Rezki (Sony)
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d827673d8a |
Documentation/kernel-parameters: Update rcu_normal_wake_from_gp doc
Update the documentation about rcu_normal_wake_from_gp parameter. Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.upadhyay@kernel.org> |
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John Stultz
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25c411fce7 |
sched: Add CONFIG_SCHED_PROXY_EXEC & boot argument to enable/disable
Add a CONFIG_SCHED_PROXY_EXEC option, along with a boot argument sched_proxy_exec= that can be used to disable the feature at boot time if CONFIG_SCHED_PROXY_EXEC was enabled. Also uses this option to allow the rq->donor to be different from rq->curr. Signed-off-by: John Stultz <jstultz@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: K Prateek Nayak <kprateek.nayak@amd.com> Link: https://lkml.kernel.org/r/20250712033407.2383110-2-jstultz@google.com |
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Andrew Morton
|
cac3d177c0 |
Merge branch 'mm-hotfixes-stable' into mm-stable to pick up changes which
are required for a merge of the series "mm: folio_pte_batch() improvements". |
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Linus Torvalds
|
3f31a806a6 |
19 hotfixes. A whopping 16 are cc:stable and the remainder address
post-6.15 issues or aren't considered necessary for -stable kernels. 14 are for MM. Three gdb-script fixes and a kallsyms build fix. -----BEGIN PGP SIGNATURE----- iHQEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaHGbTgAKCRDdBJ7gKXxA jowqAPiCWBFfcFaX20BxVaMU1PjC3Lh9llDXqQwBhBNdcadSAP44SGQ8nrfV+piB OcNz2AEwBBfS354G0Etlh4k08YoAAw== =IDDc -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-07-11-16-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "19 hotfixes. A whopping 16 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 14 are for MM. Three gdb-script fixes and a kallsyms build fix" * tag 'mm-hotfixes-stable-2025-07-11-16-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: Revert "sched/numa: add statistics of numa balance task" mm: fix the inaccurate memory statistics issue for users mm/damon: fix divide by zero in damon_get_intervals_score() samples/damon: fix damon sample mtier for start failure samples/damon: fix damon sample wsse for start failure samples/damon: fix damon sample prcl for start failure kasan: remove kasan_find_vm_area() to prevent possible deadlock scripts: gdb: vfs: support external dentry names mm/migrate: fix do_pages_stat in compat mode mm/damon/core: handle damon_call_control as normal under kdmond deactivation mm/rmap: fix potential out-of-bounds page table access during batched unmap mm/hugetlb: don't crash when allocating a folio if there are no resv scripts/gdb: de-reference per-CPU MCE interrupts scripts/gdb: fix interrupts.py after maple tree conversion maple_tree: fix mt_destroy_walk() on root leaf node mm/vmalloc: leave lazy MMU mode on PTE mapping error scripts/gdb: fix interrupts display after MCP on x86 lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users() kallsyms: fix build without execinfo |
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David Kaplan
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1caa1b0509 |
Documentation/x86: Document new attack vector controls
Document the 5 new attack vector command line options, how they interact with existing vulnerability controls, and recommendations on when they can be disabled. Note that while mitigating against untrusted userspace requires both user-to-kernel and user-to-user protection, these are kept separate. The kernel can control what code executes inside of it and that may affect the risk associated with vulnerabilities especially if new kernel mitigations are implemented. The same isn't typically true of userspace. In other words, the risk associated with user-to-user or guest-to-guest attacks is unlikely to change over time. While the risk associated with user-to-kernel or guest-to-host attacks may change. Therefore, these controls are separated. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250709155731.3279419-1-david.kaplan@amd.com |
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Tudor Ambarus
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f747cde5e7 |
PM: sleep: add kernel parameter to disable asynchronous suspend/resume
On some platforms, device dependencies are not properly represented by device links, which can cause issues when asynchronous power management is enabled. While it is possible to disable this via sysfs, doing so at runtime can race with the first system suspend event. This patch introduces a kernel command-line parameter, "pm_async", which can be set to "off" to globally disable asynchronous suspend and resume operations from early boot. It effectively provides a way to set the initial value of the existing pm_async sysfs knob at boot time. This offers a robust method to fall back to synchronous (sequential) operation, which can stabilize platforms with problematic dependencies and also serve as a useful debugging tool. The default behavior remains unchanged (asynchronous enabled). To disable it, boot the kernel with the "pm_async=off" parameter. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20250709-pm-async-off-v3-1-cb69a6fc8d04@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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SeongJae Park
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7c33c6c474 |
Docs/admin-guide/mm/damon: add DAMON_STAT usage document
Document DAMON_STAT usage and add a link to it on DAMON admin-guide page. Link: https://lkml.kernel.org/r/20250604183127.13968-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Chen Yu
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db6cc3f4ac |
Revert "sched/numa: add statistics of numa balance task"
This reverts commit |
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Bartosz Golaszewski
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0cf6d425d3 |
gpio: sim: allow to mark simulated lines as invalid
Add a new line-level, boolean property to the gpio-sim configfs interface called 'valid'. It's set by default and the user can unset it to make the line be included in the standard `gpio-reserved-ranges` property when the chip is registered with GPIO core. This allows users to specify which lines should not be available for requesting as GPIOs. Link: https://lore.kernel.org/r/20250630130358.40352-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Sumeet Pawnikar
|
3ed92345e9 |
Documentation: Remove duplicate word size in bootconfig
Remove duplicate word size in bootconfig.rst Signed-off-by: Sumeet Pawnikar <sumeet4linux@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250705151618.4806-1-sumeet4linux@gmail.com |
||
|
Konstantin Andreev
|
674e2b2479 |
smack: fix bug: setting task label silently ignores input garbage
This command:
# echo foo/bar >/proc/$$/attr/smack/current
gives the task a label 'foo' w/o indication
that label does not match input.
Setting the label with lsm_set_self_attr() syscall
behaves identically.
This occures because:
1) smk_parse_smack() is used to convert input to a label
2) smk_parse_smack() takes only that part from the
beginning of the input that looks like a label.
3) `/' is prohibited in labels, so only "foo" is taken.
(2) is by design, because smk_parse_smack() is used
for parsing strings which are more than just a label.
Silent failure is not a good thing, and there are two
indicators that this was not done intentionally:
(size >= SMK_LONGLABEL) ~> invalid
clause at the beginning of the do_setattr() and the
"Returns the length of the smack label" claim
in the do_setattr() description.
So I fixed this by adding one tiny check:
the taken label length == input length.
Since input length is now strictly controlled,
I changed the two ways of setting label
smack_setselfattr(): lsm_set_self_attr() syscall
smack_setprocattr(): > /proc/.../current
to accommodate the divergence in
what they understand by "input length":
smack_setselfattr counts mandatory \0 into input length,
smack_setprocattr does not.
smack_setprocattr allows various trailers after label
Related changes:
* fixed description for smk_parse_smack
* allow unprivileged tasks validate label syntax.
* extract smk_parse_label_len() from smk_parse_smack()
so parsing may be done w/o string allocation.
* extract smk_import_valid_label() from smk_import_entry()
to avoid repeated parsing.
* smk_parse_smack(): scan null-terminated strings
for no more than SMK_LONGLABEL(256) characters
* smack_setselfattr(): require struct lsm_ctx . flags == 0
to reserve them for future.
Fixes:
|
||
|
Konstantin Andreev
|
78fc6a94be |
smack: fix bug: invalid label of unix socket file
According to [1], the label of a UNIX domain socket (UDS)
file (i.e., the filesystem object representing the socket)
is not supposed to participate in Smack security.
To achieve this, [1] labels UDS files with "*"
in smack_d_instantiate().
Before [2], smack_d_instantiate() was responsible
for initializing Smack security for all inodes,
except ones under /proc
[2] imposed the sole responsibility for initializing
inode security for newly created filesystem objects
on smack_inode_init_security().
However, smack_inode_init_security() lacks some logic
present in smack_d_instantiate().
In particular, it does not label UDS files with "*".
This patch adds the missing labeling of UDS files
with "*" to smack_inode_init_security().
Labeling UDS files with "*" in smack_d_instantiate()
still works for stale UDS files that already exist on
disk. Stale UDS files are useless, but I keep labeling
them for consistency and maybe to make easier for user
to delete them.
Compared to [1], this version introduces the following
improvements:
* UDS file label is held inside inode only
and not saved to xattrs.
* relabeling UDS files (setxattr, removexattr, etc.)
is blocked.
[1] 2010-11-24 Casey Schaufler
commit
|
||
|
Salvatore Bonaccorso
|
0400a541ba |
Documentation/sysctl: coredump: add %F for pidfd number
In commit
|
||
|
Shouye Liu
|
4613bf5fd0 |
Documentation: amd-pstate:fix minimum performance state label error
In the AMD P-States Performance Scale diagram, the labels for "Max Perf" and "Lowest Perf" were incorrectly used to define the range for "Desired Perf".The "Desired performance target" should be bounded by the "Maximum requested performance" and the "Minimum requested performance", which corresponds to "Max Perf" and "Min Perf", respectively. Signed-off-by: Shouye Liu <shouyeliu@tencent.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250620021658.92161-1-shouyeliu@gmail.com |
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|
Shashank Balaji
|
221504a634 |
cpufreq: docs: userspace: Explain HW coordination influence
Extend the "scaling_setspeed" sysfs attribute description in the userspace governor documentation to cover possible differences between the requested and actual CPU frequency. Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com> Link: https://patch.msgid.link/20250527-userspace-governor-doc-v2-2-0e22c69920f2@sony.com [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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|
Stephen Smalley
|
17bd3c0166 |
documentation: add links to SELinux resources
Add links to the SELinux kernel subsystem README.md file, the SELinux kernel wiki, and the SELinux userspace wiki to the SELinux guide. Signed-off-by: Stephen Smalley <stephen.smalley.work@gmail.com> [PM: spacing and style corrections, subject tweak] Signed-off-by: Paul Moore <paul@paul-moore.com> |
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|
Matthew Wilcox (Oracle)
|
a39a6acc37 |
vmcoreinfo: Remove documentation of PG_slab and PG_hugetlb
The changes to kernel/vmcore_info.c were sadly not reflected in the documentation. Rectify that for both these flags as well as adding PAGE_UNACCEPTED_MAPCOUNT_VALUE. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Harry Yoo <harry.yoo@oracle.com> Link: https://patch.msgid.link/20250611155916.2579160-8-willy@infradead.org Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
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|
Matthew Wilcox (Oracle)
|
262e086f93 |
doc: Move SLUB documentation to the admin guide
This section is supposed to be for internal documentation, while the document is advice for sysadmins. Move it to the appropriate place. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Harry Yoo <harry.yoo@oracle.com> Link: https://patch.msgid.link/20250611155916.2579160-2-willy@infradead.org Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
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|
Borislav Petkov (AMD)
|
d8010d4ba4 |
x86/bugs: Add a Transient Scheduler Attacks mitigation
Add the required features detection glue to bugs.c et all in order to support the TSA mitigation. Co-developed-by: Kim Phillips <kim.phillips@amd.com> Signed-off-by: Kim Phillips <kim.phillips@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> |
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|
Borislav Petkov (AMD)
|
f9af88a3d3 |
x86/bugs: Rename MDS machinery to something more generic
It will be used by other x86 mitigations. No functional changes. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> |
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|
Baoquan He
|
aa9bb1b325 |
ima: add a knob ima= to allow disabling IMA in kdump kernel
Kdump kernel doesn't need IMA functionality, and enabling IMA will cost extra memory. It would be very helpful to allow IMA to be disabled for kdump kernel. Hence add a knob ima=on|off here to allow turning IMA off in kdump kernel if needed. Note that this IMA disabling is limited to kdump kernel, please don't abuse it in other kernel and thus serious consequences are caused. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> |
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|
Dmitry Vyukov
|
a2fc422ed7 |
syscall_user_dispatch: Add PR_SYS_DISPATCH_INCLUSIVE_ON
There are two possible scenarios for syscall filtering: - having a trusted/allowed range of PCs, and intercepting everything else - or the opposite: a single untrusted/intercepted range and allowing everything else (this is relevant for any kind of sandboxing scenario, or monitoring behavior of a single library) The current API only allows the former use case due to allowed range wrap-around check. Add PR_SYS_DISPATCH_INCLUSIVE_ON that enables the second use case. Add PR_SYS_DISPATCH_EXCLUSIVE_ON alias for PR_SYS_DISPATCH_ON to make it clear how it's different from the new PR_SYS_DISPATCH_INCLUSIVE_ON. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/97947cc8e205ff49675826d7b0327ef2e2c66eea.1747839857.git.dvyukov@google.com |
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|
Armin Wolf
|
c9de2e5c15
|
Documentation: ABI: Update WMI device paths in ABI docs
The WMI driver core might append an ID to the WMI device name to avoid name collisions in case multiple WMI devices with the same GUID are present. Update all sysfs path referring to WMI devices to inform users about this important detail. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20250610055526.23688-1-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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|
Philipp Kerling
|
9331005366 |
smb: client: disable path remapping with POSIX extensions
If SMB 3.1.1 POSIX Extensions are available and negotiated, the client should be able to use all characters and not remap anything. Currently, the user has to explicitly request this behavior by specifying the "nomapposix" mount option. Link: https://lore.kernel.org/4195bb677b33d680e77549890a4f4dd3b474ceaf.camel@rx2.rx-server.de Signed-off-by: Philipp Kerling <pkerling@casix.org> Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> |
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|
Vishal Chourasia
|
38b9342ee6 |
Documentation: cgroup: add section explaining controller availability
Add "Availability" section to Control Group v2 docs. It describes the meaning of a controller being available in a cgroup, complementing the existing "Enabling and Disabling" section. This update improves the clarity of cgroup controller management by explicitly distinguishing between: 1. Availability – when a controller is supported by the kernel and listed in "cgroup.controllers", making its interface files accessible in the cgroup's directory. 2. Enabling – when a controller is enabled via explicitly writing the name of the controller to "cgroup.subtree_control" to control distribution of resource across the cgroup's immediate children. As an example, consider /sys/fs/cgroup # cat cgroup.controllers cpuset cpu io memory hugetlb pids misc /sys/fs/cgroup # cat cgroup.subtree_control # No controllers enabled by default /sys/fs/cgroup # echo +cpu +memory > cgroup.subtree_control # enabling "cpu" and "memory" /sys/fs/cgroup # cat cgroup.subtree_control cpu memory # cpu and memory enabled in /sys/fs/cgroup /sys/fs/cgroup # mkdir foo_cgrp /sys/fs/cgroup # cd foo_cgrp/ /sys/fs/cgroup/foo_cgrp # cat cgroup.controllers cpu memory # cpu and memory available in 'foo_cgrp' /sys/fs/cgroup/foo_cgrp # cat cgroup.subtree_control # empty by default /sys/fs/cgroup/foo_cgrp # ls cgroup.controllers cpu.max.burst memory.numa_stat cgroup.events cpu.pressure memory.oom.group cgroup.freeze cpu.stat memory.peak cgroup.kill cpu.stat.local memory.pressure cgroup.max.depth cpu.weight memory.reclaim cgroup.max.descendants cpu.weight.nice memory.stat cgroup.pressure io.pressure memory.swap.current cgroup.procs memory.current memory.swap.events cgroup.stat memory.events memory.swap.high cgroup.subtree_control memory.events.local memory.swap.max cgroup.threads memory.high memory.swap.peak cgroup.type memory.low memory.zswap.current cpu.idle memory.max memory.zswap.max cpu.max memory.min memory.zswap.writeback In this example, "cpu" and "memory" are enabled in the root cgroup, making them available in "foo_cgrp". This exposes the corresponding interface files in "foo_cgrp/", allowing resource control of processes in that cgroup. However, these controllers are not yet enabled in "foo_cgrp" itself. Once a controller is available in a cgroup it can be used to resource control processes of the cgroup. Acked-by: Michal Koutný <mkoutny@suse.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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|
Kees Cook
|
de1c831a78 |
slab: Decouple slab_debug and no_hash_pointers
Some system owners use slab_debug=FPZ (or similar) as a hardening option,
but do not want to be forced into having kernel addresses exposed due
to the implicit "no_hash_pointers" boot param setting.[1]
Introduce the "hash_pointers" boot param, which defaults to "auto"
(the current behavior), but also includes "always" (forcing on hashing
even when "slab_debug=..." is defined), and "never". The existing
"no_hash_pointers" boot param becomes an alias for "hash_pointers=never".
This makes it possible to boot with "slab_debug=FPZ hash_pointers=always".
Link: https://github.com/KSPP/linux/issues/368 [1]
Fixes:
|
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|
Linus Torvalds
|
c0c9379f23 |
USB/Thunderbolt changes for 6.16-rc1
Here is the big set of USB and Thunderbolt changes for 6.16-rc1.
Included in here are the following:
- USB offload support for audio devices. I think this takes the
record for the most number of patch series (30+) over the longest
period of time (2+ years) to get merged properly. Many props go to
Wesley Cheng for seeing this effort through, they took a major
out-of-tree hacked-up-monstrosity that was created by multiple
vendors for their specific devices, got it all merged into a
semi-coherent set of changes, and got all of the different major
subsystems to agree on how this should be implemented both with
changes to their code as well as userspace apis, AND wrangled the
hardware companies into agreeing to go forward with this, despite
making them all redo work they had already done in their private
device trees. This feature offers major power savings on embedded
devices where a USB audio stream can continue to flow while the rest
of the system is sleeping, something that devices running on battery
power really care about. There are still some more small tweaks
left to be done here, and those patches are still out for review and
arguing among the different hardware companies, but this is a major
step forward and a great example of how to do upstream development
well.
- small number of thunderbolt fixes and updates, things seem to be
slowing down here (famous last words...)
- xhci refactors and reworking to try to handle some rough corner
cases in some hardware implementations where things don't always
work properly
- typec driver updates
- USB3 power management reworking and updates
- Removal of some old and orphaned UDC gadget drivers that had not
been used in a very long time, dropping over 11 thousand lines from
the tree, always a nice thing, making up for the 12k lines added for
the USB offload feature.
- lots of little updates and fixes in different drivers
All of these have been in linux-next for over 2 weeks, the USB offload
logic has been in there for 8 weeks now, with no reported issues
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.16-rc1.
Included in here are the following:
- USB offload support for audio devices.
I think this takes the record for the most number of patch series
(30+) over the longest period of time (2+ years) to get merged
properly.
Many props go to Wesley Cheng for seeing this effort through, they
took a major out-of-tree hacked-up-monstrosity that was created by
multiple vendors for their specific devices, got it all merged into
a semi-coherent set of changes, and got all of the different major
subsystems to agree on how this should be implemented both with
changes to their code as well as userspace apis, AND wrangled the
hardware companies into agreeing to go forward with this, despite
making them all redo work they had already done in their private
device trees.
This feature offers major power savings on embedded devices where a
USB audio stream can continue to flow while the rest of the system
is sleeping, something that devices running on battery power really
care about. There are still some more small tweaks left to be done
here, and those patches are still out for review and arguing among
the different hardware companies, but this is a major step forward
and a great example of how to do upstream development well.
- small number of thunderbolt fixes and updates, things seem to be
slowing down here (famous last words...)
- xhci refactors and reworking to try to handle some rough corner
cases in some hardware implementations where things don't always
work properly
- typec driver updates
- USB3 power management reworking and updates
- Removal of some old and orphaned UDC gadget drivers that had not
been used in a very long time, dropping over 11 thousand lines from
the tree, always a nice thing, making up for the 12k lines added
for the USB offload feature.
- lots of little updates and fixes in different drivers
All of these have been in linux-next for over 2 weeks, the USB offload
logic has been in there for 8 weeks now, with no reported issues"
* tag 'usb-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (172 commits)
ALSA: usb-audio: qcom: fix USB_XHCI dependency
ASoC: qdsp6: fix compile-testing without CONFIG_OF
usb: misc: onboard_usb_dev: fix build warning for CONFIG_USB_ONBOARD_DEV_USB5744=n
usb: typec: tipd: fix typo in TPS_STATUS_HIGH_VOLAGE_WARNING macro
USB: typec: fix const issue in typec_match()
USB: gadget: udc: fix const issue in gadget_match_driver()
USB: gadget: fix up const issue with struct usb_function_instance
USB: serial: pl2303: add new chip PL2303GC-Q20 and PL2303GT-2AB
USB: serial: bus: fix const issue in usb_serial_device_match()
usb: usbtmc: Fix timeout value in get_stb
usb: usbtmc: Fix read_stb function and get_stb ioctl
ALSA: qc_audio_offload: try to reduce address space confusion
ALSA: qc_audio_offload: avoid leaking xfer_buf allocation
ALSA: qc_audio_offload: rename dma/iova/va/cpu/phys variables
ALSA: usb-audio: qcom: Fix an error handling path in qc_usb_audio_probe()
usb: misc: onboard_usb_dev: Fix usb5744 initialization sequence
dt-bindings: usb: ti,usb8041: Add binding for TI USB8044 hub controller
usb: misc: onboard_usb_dev: Add support for TI TUSB8044 hub
usb: gadget: lpc32xx_udc: Use USB API functions rather than constants
usb: gadget: epautoconf: Use USB API functions rather than constants
...
|
||
|
Linus Torvalds
|
e9e668cd27 |
arm64 fixes for -rc1
- Disable problematic linker assertions for broken versions of LLD.
- Work around sporadic link failure with LLD and various randconfig
builds.
- Fix missing invalidation in the TLB batching code when reclaim races
with mprotect() and friends.
- Add a command-line override for MPAM to allow booting on systems with
broken firmware.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"We've got a couple of build fixes when using LLD, a missing TLB
invalidation and a workaround for broken firmware on SoCs with CPUs
that implement MPAM:
- Disable problematic linker assertions for broken versions of LLD
- Work around sporadic link failure with LLD and various randconfig
builds
- Fix missing invalidation in the TLB batching code when reclaim
races with mprotect() and friends
- Add a command-line override for MPAM to allow booting on systems
with broken firmware"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Add override for MPAM
arm64/mm: Close theoretical race where stale TLB entry remains valid
arm64: Work around convergence issue with LLD linker
arm64: Disable LLD linker ASSERT()s for the time being
|
||
|
Linus Torvalds
|
fd1f847350 |
- The 2 patch series "zram: support algorithm-specific parameters" from
Sergey Senozhatsky adds infrastructure for passing algorithm-specific parameters into zram. A single parameter `winbits' is implemented at this time. - The 5 patch series "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg charging nmi-safe, which is required by BFP, which can operate in NMI context. - The 5 patch series "Some random fixes and cleanup to shmem" from Kemeng Shi implements small fixes and cleanups in the shmem code. - The 2 patch series "Skip mm selftests instead when kernel features are not present" from Zi Yan fixes some issues in the MM selftest code. - The 2 patch series "mm/damon: build-enable essential DAMON components by default" from SeongJae Park reworks DAMON Kconfig to make it easier to enable CONFIG_DAMON. - The 2 patch series "sched/numa: add statistics of numa balance task migration" from Libo Chen adds more info into sysfs and procfs files to improve visibility into the NUMA balancer's task migration activity. - The 4 patch series "selftests/mm: cow and gup_longterm cleanups" from Mark Brown provides various updates to some of the MM selftests to make them play better with the overall containing framework. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaDzA9wAKCRDdBJ7gKXxA js8sAP9V3COg+vzTmimzP3ocTkkbbIJzDfM6nXpE2EQ4BR3ejwD+NsIT2ZLtTF6O LqAZpgO7ju6wMjR/lM30ebCq5qFbZAw= =oruw -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - "zram: support algorithm-specific parameters" from Sergey Senozhatsky adds infrastructure for passing algorithm-specific parameters into zram. A single parameter `winbits' is implemented at this time. - "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg charging nmi-safe, which is required by BFP, which can operate in NMI context. - "Some random fixes and cleanup to shmem" from Kemeng Shi implements small fixes and cleanups in the shmem code. - "Skip mm selftests instead when kernel features are not present" from Zi Yan fixes some issues in the MM selftest code. - "mm/damon: build-enable essential DAMON components by default" from SeongJae Park reworks DAMON Kconfig to make it easier to enable CONFIG_DAMON. - "sched/numa: add statistics of numa balance task migration" from Libo Chen adds more info into sysfs and procfs files to improve visibility into the NUMA balancer's task migration activity. - "selftests/mm: cow and gup_longterm cleanups" from Mark Brown provides various updates to some of the MM selftests to make them play better with the overall containing framework. * tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (43 commits) mm/khugepaged: clean up refcount check using folio_expected_ref_count() selftests/mm: fix test result reporting in gup_longterm selftests/mm: report unique test names for each cow test selftests/mm: add helper for logging test start and results selftests/mm: use standard ksft_finished() in cow and gup_longterm selftests/damon/_damon_sysfs: skip testcases if CONFIG_DAMON_SYSFS is disabled sched/numa: add statistics of numa balance task sched/numa: fix task swap by skipping kernel threads tools/testing: check correct variable in open_procmap() tools/testing/vma: add missing function stub mm/gup: update comment explaining why gup_fast() disables IRQs selftests/mm: two fixes for the pfnmap test mm/khugepaged: fix race with folio split/free using temporary reference mm: add CONFIG_PAGE_BLOCK_ORDER to select page block order mmu_notifiers: remove leftover stub macros selftests/mm: deduplicate test names in madv_populate kcov: rust: add flags for KCOV with Rust mm: rust: make CONFIG_MMU ifdefs more narrow mmu_gather: move tlb flush for VM_PFNMAP/VM_MIXEDMAP vmas into free_pgtables() mm/damon/Kconfig: enable CONFIG_DAMON by default ... |
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|
Xi Ruoyao
|
10f885d63a |
arm64: Add override for MPAM
As the message of the commit
|
||
|
Chen Yu
|
ad6b26b6a0 |
sched/numa: add statistics of numa balance task
On systems with NUMA balancing enabled, it has been found that tracking
task activities resulting from NUMA balancing is beneficial. NUMA
balancing employs two mechanisms for task migration: one is to migrate
a task to an idle CPU within its preferred node, and the other is to
swap tasks located on different nodes when they are on each other's
preferred nodes.
The kernel already provides NUMA page migration statistics in
/sys/fs/cgroup/mytest/memory.stat and /proc/{PID}/sched. However, it
lacks statistics regarding task migration and swapping. Therefore,
relevant counts for task migration and swapping should be added.
The following two new fields:
numa_task_migrated
numa_task_swapped
will be shown in /sys/fs/cgroup/{GROUP}/memory.stat, /proc/{PID}/sched
and /proc/vmstat.
Introducing both per-task and per-memory cgroup (memcg) NUMA balancing
statistics facilitates a rapid evaluation of the performance and
resource utilization of the target workload. For instance, users can
first identify the container with high NUMA balancing activity and then
further pinpoint a specific task within that group, and subsequently
adjust the memory policy for that task. In short, although it is
possible to iterate through /proc/$pid/sched to locate the problematic
task, the introduction of aggregated NUMA balancing activity for tasks
within each memcg can assist users in identifying the task more
efficiently through a divide-and-conquer approach.
As Libo Chen pointed out, the memcg event relies on the text names in
vmstat_text, and /proc/vmstat generates corresponding items based on
vmstat_text. Thus, the relevant task migration and swapping events
introduced in vmstat_text also need to be populated by
count_vm_numa_event(), otherwise these values are zero in /proc/vmstat.
In theory, task migration and swap events are part of the scheduler's
activities. The reason for exposing them through the
memory.stat/vmstat interface is that we already have NUMA balancing
statistics in memory.stat/vmstat, and these events are closely related
to each other. Following Shakeel's suggestion, we describe the
end-to-end flow/story of all these events occurring on a timeline for
future reference:
The goal of NUMA balancing is to co-locate a task and its memory pages
on the same NUMA node. There are two strategies: migrate the pages to
the task's node, or migrate the task to the node where its pages
reside.
Suppose a task p1 is running on Node 0, but its pages are located on
Node 1. NUMA page fault statistics for p1 reveal its "page footprint"
across nodes. If NUMA balancing detects that most of p1's pages are on
Node 1:
1.Page Migration Attempt:
The Numa balance first tries to migrate p1's pages to Node 0.
The numa_page_migrate counter increments.
2.Task Migration Strategies:
After the page migration finishes, Numa balance checks every
1 second to see if p1 can be migrated to Node 1.
Case 2.1: Idle CPU Available
If Node 1 has an idle CPU, p1 is directly scheduled there. This
event is logged as numa_task_migrated.
Case 2.2: No Idle CPU (Task Swap)
If all CPUs on Node1 are busy, direct migration could cause CPU
contention or load imbalance. Instead: The Numa balance selects a
candidate task p2 on Node 1 that prefers Node 0 (e.g., due to its own
page footprint). p1 and p2 are swapped. This cross-node swap is
recorded as numa_task_swapped.
Link: https://lkml.kernel.org/r/d00edb12ba0f0de3c5222f61487e65f2ac58f5b1.1748493462.git.yu.c.chen@intel.com
Link: https://lkml.kernel.org/r/7ef90a88602ed536be46eba7152ed0d33bad5790.1748002400.git.yu.c.chen@intel.com
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Cc: Aubrey Li <aubrey.li@intel.com>
Cc: Ayush Jain <Ayush.jain3@amd.com>
Cc: "Chen, Tim C" <tim.c.chen@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Libo Chen <libo.chen@oracle.com>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Linus Torvalds
|
7d4e49a77d |
- The 3 patch series "hung_task: extend blocking task stacktrace dump to
semaphore" from Lance Yang enhances the hung task detector. The
detector presently dumps the blocking tasks's stack when it is blocked
on a mutex. Lance's series extends this to semaphores.
- The 2 patch series "nilfs2: improve sanity checks in dirty state
propagation" from Wentao Liang addresses a couple of minor flaws in
nilfs2.
- The 2 patch series "scripts/gdb: Fixes related to lx_per_cpu()" from
Illia Ostapyshyn fixes a couple of issues in the gdb scripts.
- The 9 patch series "Support kdump with LUKS encryption by reusing LUKS
volume keys" from Coiby Xu addresses a usability problem with kdump.
When the dump device is LUKS-encrypted, the kdump kernel may not have
the keys to the encrypted filesystem. A full writeup of this is in the
series [0/N] cover letter.
- The 2 patch series "sysfs: add counters for lockups and stalls" from
Max Kellermann adds /sys/kernel/hardlockup_count and
/sys/kernel/hardlockup_count and /sys/kernel/rcu_stall_count.
- The 3 patch series "fork: Page operation cleanups in the fork code"
from Pasha Tatashin implements a number of code cleanups in fork.c.
- The 3 patch series "scripts/gdb/symbols: determine KASLR offset on
s390 during early boot" from Ilya Leoshkevich fixes some s390 issues in
the gdb scripts.
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Merge tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "hung_task: extend blocking task stacktrace dump to semaphore" from
Lance Yang enhances the hung task detector.
The detector presently dumps the blocking tasks's stack when it is
blocked on a mutex. Lance's series extends this to semaphores
- "nilfs2: improve sanity checks in dirty state propagation" from
Wentao Liang addresses a couple of minor flaws in nilfs2
- "scripts/gdb: Fixes related to lx_per_cpu()" from Illia Ostapyshyn
fixes a couple of issues in the gdb scripts
- "Support kdump with LUKS encryption by reusing LUKS volume keys" from
Coiby Xu addresses a usability problem with kdump.
When the dump device is LUKS-encrypted, the kdump kernel may not have
the keys to the encrypted filesystem. A full writeup of this is in
the series [0/N] cover letter
- "sysfs: add counters for lockups and stalls" from Max Kellermann adds
/sys/kernel/hardlockup_count and /sys/kernel/hardlockup_count and
/sys/kernel/rcu_stall_count
- "fork: Page operation cleanups in the fork code" from Pasha Tatashin
implements a number of code cleanups in fork.c
- "scripts/gdb/symbols: determine KASLR offset on s390 during early
boot" from Ilya Leoshkevich fixes some s390 issues in the gdb
scripts
* tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (67 commits)
llist: make llist_add_batch() a static inline
delayacct: remove redundant code and adjust indentation
squashfs: add optional full compressed block caching
crash_dump, nvme: select CONFIGFS_FS as built-in
scripts/gdb/symbols: determine KASLR offset on s390 during early boot
scripts/gdb/symbols: factor out pagination_off()
scripts/gdb/symbols: factor out get_vmlinux()
kernel/panic.c: format kernel-doc comments
mailmap: update and consolidate Casey Connolly's name and email
nilfs2: remove wbc->for_reclaim handling
fork: define a local GFP_VMAP_STACK
fork: check charging success before zeroing stack
fork: clean-up naming of vm_stack/vm_struct variables in vmap stacks code
fork: clean-up ifdef logic around stack allocation
kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count
x86/crash: make the page that stores the dm crypt keys inaccessible
x86/crash: pass dm crypt keys to kdump kernel
Revert "x86/mm: Remove unused __set_memory_prot()"
crash_dump: retrieve dm crypt keys in kdump kernel
...
|
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Linus Torvalds
|
00c010e130 |
- The 11 patch series "Add folio_mk_pte()" from Matthew Wilcox
simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - The 8 patch series "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - The 3 patch series "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - The 2 patch series "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - The 8 patch series "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - The 6 patch series "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - The 3 patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - The 2 patch series "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - The 3 patch series "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - The 3 patch series "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - The 12 patch series "Always call constructor for kernel page tables" from Kevin Brodsky "ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables". This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - The 9 patch series "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - The 3 patch series "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - The 4 patch series "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - The 6 patch series "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - The 3 patch series "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - The 3 patch series ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - The 7 patch series "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - The 5 patch series "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - The 2 patch series "vmscan: enforce mems_effective during demotion" from Gregory Price "changes reclaim to respect cpuset.mems_effective during demotion when possible". because "presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated." "This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently." - The 2 patch series ""Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - The 3 patch series "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - The 4 patch series "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - The 17 patch series "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - The 7 patch series "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - The 2 patch series "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - The 2 patch series "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - The 4 patch series "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - The 6 patch series "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - The 2 patch series "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - The 8 patch series "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - The 3 patch series "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - The 4 patch series "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - The 6 patch series "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is "yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents." - The 7 patch series "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - The 4 patch series "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaDt5qgAKCRDdBJ7gKXxA ju6XAP9nTiSfRz8Cz1n5LJZpFKEGzLpSihCYyR6P3o1L9oe3mwEAlZ5+XAwk2I5x Qqb/UGMEpilyre1PayQqOnct3aSL9Ao= =tYYm -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "Add folio_mk_pte()" from Matthew Wilcox simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - "Always call constructor for kernel page tables" from Kevin Brodsky ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables. This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - "vmscan: enforce mems_effective during demotion" from Gregory Price changes reclaim to respect cpuset.mems_effective during demotion when possible. because presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated. This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently. - "Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents. - "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. * tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (285 commits) mm: pcp: increase pcp->free_count threshold to trigger free_high mm/hugetlb: convert use of struct page to folio in __unmap_hugepage_range() mm/hugetlb: refactor __unmap_hugepage_range() to take folio instead of page mm/hugetlb: refactor unmap_hugepage_range() to take folio instead of page mm/hugetlb: pass folio instead of page to unmap_ref_private() memcg: objcg stock trylock without irq disabling memcg: no stock lock for cpu hot-unplug memcg: make __mod_memcg_lruvec_state re-entrant safe against irqs memcg: make count_memcg_events re-entrant safe against irqs memcg: make mod_memcg_state re-entrant safe against irqs memcg: move preempt disable to callers of memcg_rstat_updated memcg: memcg_rstat_updated re-entrant safe against irqs mm: khugepaged: decouple SHMEM and file folios' collapse selftests/eventfd: correct test name and improve messages alloc_tag: check mem_profiling_support in alloc_tag_init Docs/damon: update titles and brief introductions to explain DAMOS selftests/damon/_damon_sysfs: read tried regions directories in order mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject() mm/damon/paddr: remove unused variable, folio_list, in damon_pa_stat() mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs ... |
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Linus Torvalds
|
dee264c16a |
require gcc-8 and binutils-2.30
x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmg6vNMACgkQmmx57+YA GNkOmg/+LtR9B2P27GPBeG8HnLTZ8hKELiyYeSk6ZFgQv5hevE37HV35Yru7e7gu wcF6CgYr8ff4CVcHM7y0790oGew1thkqq5CklFIH0EwCDJx/mWfZR1SS2jfZIEWM HSDOlQQd1S8oWia14tSnQos3nW3CB9/ABVTHH+Wvl3xn48WMRvgK2LJgGLuxJrt8 5DD9auHiLjchWB5tB4DU98IgWWgFUGMTsI6IayZ4dkF4CdWqd89h0Y3pjJYeBgHS mPxzR2q8WjEmG9hp7QuZQgn/pAYleJAwHvvkoLrkQ2ieqx3FjWiwFbQp4CG1Sc8L eBR1lnkqS2z/e7xJLfe86fOoKWWu4I0tZKhRan/0+UOGm5nXrGpqSxKS8ZDsRuAp 3fvyhIp1cYSa7Xkok8BFhLEFR0tguXJXnXBc3tWE5VXIfFNd0Ohh1GUYhXDAqWKh i0jN9dSNhokM3AqBi6qZl5kmBnRA3UsIaOg3QRrqN8IlBPp+u7i5xsrJIUWvD95o TO06admmLcCJT8n6ZfNVfRjBgzu8+t54UVaDx9YYwxoNGOSFwqOb8CSPTWPxLmDr RKDUOvO8DBlP7uFz9neP+LxluA3DjurRZvb0z0AmCZ8/RXEmTMCyfP5a6esxquXt 0Bqo6hM9q+TeXTHNS1CNvqLSWWikw+AzS/ZPPvriYFn5lxtbq6c= =pdDC -----END PGP SIGNATURE----- Merge tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull compiler version requirement update from Arnd Bergmann: "Require gcc-8 and binutils-2.30 x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree." * tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: Makefile.kcov: apply needed compiler option unconditionally in CFLAGS_KCOV Documentation: update binutils-2.30 version reference gcc-plugins: remove SANCOV gcc plugin Kbuild: remove structleak gcc plugin arm64: drop binutils version checks raid6: skip avx512 checks kbuild: require gcc-8 and binutils-2.30 |
||
|
Linus Torvalds
|
1193e205db |
platform-drivers-x86 for v6.16-1
Highlights:
- alienware-wmi-wmax:
- Add HWMON support
- Add ABI and admin-guide documentation
- Expose GPIO debug methods through debug FS
- Support manual fan control and "custom" thermal profile
- amd/hsmp:
- Add sysfs files to show HSMP telemetry
- Report power readings and limits via hwmon
- amd/isp4: Add AMD ISP platform config for OV05C10
- asus-wmi:
- Refactor Ally suspend/resume to work better with older FW
- hid-asus: check ROG Ally MCU version and warn about old FW versions
- dasharo-acpi: Add driver for Dasharo devices supporting fans and
temperatures monitoring
- dell-ddv:
- Expose the battery health and manufacture date to userspace using
power supply extensions
- Implement the battery matching algorithm
- dell-pc:
- Improve error propagation
- Use faux device
- int3472:
- Add delays to avoid GPIO regulator spikes
- Add handshake pin support
- Make regulator supply name configurable and allow registering more
than 1 GPIO regulator
- Map mt9m114 powerdown pin to powerenable
- intel/pmc: Add separate SSRAM Telemetry driver
- intel-uncore-freq: Add attributes to show agent types and die ID
- ISST:
- Support SST-TF revision 2 (allows more cores per bucket)
- Support SST-PP revision 2 (fabric 1 frequencies)
- Remove unnecessary SST MSRs restore (the package retains MSRs
despite CPU offlining)
- mellanox: Add support for SN2201, SN4280, SN5610, and SN5640
- mellanox: mlxbf-pmc: Support additional PMC blocks
- oxpec:
- Add OneXFly variants
- Add support for charge limit, charge thresholds, and turbo LED
- Distinguish current X1 variants to avoid unwanted matching to new
variants
- Follow hwmon conventions
- Move from hwmon/oxp-sensors to platform/x86 to match the enlarged
scope
- power: supply:
- Add inhibit-charge-awake (needed by oxpec)
- Add additional battery health status values ("blown fuse" and "cell
imbalance") (needed by dell-ddv)
- powerwell-ec: Add driver for Portwell EC supporting GPIO and watchdog
- thinkpad-acpi: Support camera shutter switch hotkey
- tuxedo: Add virtual LampArray for TUXEDO NB04 devices
- tools/power/x86/intel-speed-select:
- Support displaying SST-PP revision 2 fields
- Skip uncore frequency update on newer generations of CPUs
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
ABI: testing: sysfs-class-oxp:
- add missing documentation
- add tt_led attribute documentation
Add AMD ISP platform config for OV05C10:
- Add AMD ISP platform config for OV05C10
alienware-wmi-wmax:
- Add a DebugFS interface
- Add HWMON support
- Add support for manual fan control
- Add support for the "custom" thermal profile
- Expose GPIO debug methods
- Fix awcc_hwmon_fans_init() label logic
- Fix uninitialized bitmap in awcc_hwmon_fans_init()
- Improve ID processing
- Improve internal AWCC API
- Improve platform profile probe
- Modify supported_thermal_profiles[]
- Rename thermal related symbols
amd/hsmp: acpi:
- Add sysfs files to display HSMP telemetry
amd/hsmp:
- fix building with CONFIG_HWMON=m
- Report power via hwmon sensors
- Use a single DRIVER_VERSION for all hsmp modules
arm64: huawei-gaokun-ec:
- Remove unneeded semicolon
asus-wmi:
- fix build without CONFIG_SUSPEND
- Refactor Ally suspend/resume
Avoid -Wflex-array-member-not-at-end warning:
- Avoid -Wflex-array-member-not-at-end warning
barco-p50:
- use new GPIO line value setter callbacks
dell-ddv:
- Expose the battery health to userspace
- Expose the battery manufacture date to userspace
- Implement the battery matching algorithm
dell-pc:
- Propagate errors when detecting feature support
- Transition to faux device
- Use non-atomic bitmap operations
docs: ABI:
- Fix "aassociated" to "associated"
Documentation/ABI:
- Add new attribute for mlxreg-io sysfs interfaces
Documentation: ABI:
- Add sysfs platform and debugfs ABI documentation for alienware-wmi
Documentation: admin-guide: laptops:
- Add documentation for alienware-wmi
Documentation: admin-guide: pm:
- Add documentation for agent_types
- Add documentation for die_id
Documentation: wmi: alienware-wmi:
- Add GPIO control documentation
Documentation: wmi:
- Improve and update alienware-wmi documentation
Do not enable by default during compile testing:
- Do not enable by default during compile testing
hid-asus:
- check ROG Ally MCU version and warn
hwmon:
- (oxp-sensors) Add all OneXFly variants
- (oxp-sensors) Distinguish the X1 variants
int0002:
- use new GPIO line value setter callbacks
int3472:
- Add handshake pin support
- Add skl_int3472_register_clock() helper
- Avoid GPIO regulator spikes
- Debug log when remapping pins
- Drop unused gpio field from struct int3472_gpio_regulator
- Export int3472_discrete_parse_crs()
- For mt9m114 sensors map powerdown to powerenable
- Make regulator supply name configurable
- Move common.h to public includes, symbols to INTEL_INT3472
- Prepare for registering more than 1 GPIO regulator
- Remove unused sensor_config struct member
- Rework AVDD second sensor quirk handling
- Stop setting a supply-name for GPIO regulators
- Stop using devm_gpiod_get()
intel/pmc:
- Convert index variables to be unsigned
- Create Intel PMC SSRAM Telemetry driver
- Improve pmc_core_get_lpm_req()
- Move error handling to init function
- Move PMC Core related functions
- Move PMC devid to core.h
- Remove unneeded header file inclusion
- Remove unneeded io operations
- Rename core_ssram to ssram_telemetry
- Use devm for mutex_init
intel: power-domains:
- Add interface to get Linux die ID
intel-uncore-freq:
- Add attributes to show agent types
- Add attributes to show die_id
intel/vsec:
- Change return type of intel_vsec_register
Introduce dasharo-acpi platform driver:
- Introduce dasharo-acpi platform driver
ISST:
- Do Not Restore SST MSRs on CPU Online Operation
- Support SST-PP revision 2
- Support SST-TF revision 2
- Update minor version
mellanox:
- Cosmetic changes to improve code style
- Introduce support of Nvidia smart switch
- Rename field to improve code readability
mlxbf-pmc:
- Support additional PMC blocks
mlx-platform:
- Add support for new Nvidia system
mlxreg-dpu:
- Add initial support for Nvidia DPU
- Fix smatch warnings
nvsw-sn2200:
- Add support for new system flavour
- Fix .items in nvsw_sn2201_busbar_hotplug
oxpec:
- Add a lower bounds check in oxp_psy_ext_set_prop()
- Add charge threshold and behaviour to OneXPlayer
- Add support for the OneXPlayer G1
- Add turbo led support to X1 devices
- Adhere to sysfs-class-hwmon and enable pwm on 2
- Convert defines to using tabs
- Follow reverse xmas convention for tt_toggle
- Make turbo val apply a bitmask
- Move fan speed read to separate function
- Move hwmon/oxp-sensors to platform/x86
- Move pwm_enable read to its own function
- Move pwm value read/write to separate functions
- Rename ec group to tt_toggle
- Rename rval to ret in tt_toggle
portwell-ec:
- Add GPIO and WDT driver for Portwell EC
power: supply:
- add inhibit-charge-awake to charge_behaviour
power: supply: core:
- Add additional health status values
silicom:
- use new GPIO line value setter callbacks
sony-laptop:
- Remove unused sony laptop camera code
thermal/drivers/acerhdf:
- Constify struct thermal_zone_device_ops
thinkpad-acpi:
- Add support for new hotkey for camera shutter switch
tools/power/x86/intel-speed-select:
- Skip uncore frequency update
- Support SST PP revision 2 fields
- v1.23 release
tuxedo:
- Add virtual LampArray for TUXEDO NB04 devices
- Prevent invalid Kconfig state
Use strscpy()/scnprintf() with acpi_device_name/class():
- Use strscpy()/scnprintf() with acpi_device_name/class()
Merges:
- Merge branch 'fixes' into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
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Merge tag 'platform-drivers-x86-v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers updates from Ilpo Järvinen:
"The changes are mostly business as usual. Besides pdx86 changes, there
are a few power supply changes needed for related pdx86 features, move
of oxpec driver from hwmon (oxp-sensors) to pdx86, and one FW version
warning to hid-asus.
Highlights:
- alienware-wmi-wmax:
- Add HWMON support
- Add ABI and admin-guide documentation
- Expose GPIO debug methods through debug FS
- Support manual fan control and "custom" thermal profile
- amd/hsmp:
- Add sysfs files to show HSMP telemetry
- Report power readings and limits via hwmon
- amd/isp4: Add AMD ISP platform config for OV05C10
- asus-wmi:
- Refactor Ally suspend/resume to work better with older FW
- hid-asus: check ROG Ally MCU version and warn about old FW versions
- dasharo-acpi:
- Add driver for Dasharo devices supporting fans and temperatures
monitoring
- dell-ddv:
- Expose the battery health and manufacture date to userspace
using power supply extensions
- Implement the battery matching algorithm
- dell-pc:
- Improve error propagation
- Use faux device
- int3472:
- Add delays to avoid GPIO regulator spikes
- Add handshake pin support
- Make regulator supply name configurable and allow registering
more than 1 GPIO regulator
- Map mt9m114 powerdown pin to powerenable
- intel/pmc: Add separate SSRAM Telemetry driver
- intel-uncore-freq: Add attributes to show agent types and die ID
- ISST:
- Support SST-TF revision 2 (allows more cores per bucket)
- Support SST-PP revision 2 (fabric 1 frequencies)
- Remove unnecessary SST MSRs restore (the package retains MSRs
despite CPU offlining)
- mellanox: Add support for SN2201, SN4280, SN5610, and SN5640
- mellanox: mlxbf-pmc: Support additional PMC blocks
- oxpec:
- Add OneXFly variants
- Add support for charge limit, charge thresholds, and turbo LED
- Distinguish current X1 variants to avoid unwanted matching to
new variants
- Follow hwmon conventions
- Move from hwmon/oxp-sensors to platform/x86 to match the
enlarged scope
- power supply:
- Add inhibit-charge-awake (needed by oxpec)
- Add additional battery health status values ("blown fuse" and
"cell imbalance") (needed by dell-ddv)
- powerwell-ec: Add driver for Portwell EC supporting GPIO and watchdog
- thinkpad-acpi: Support camera shutter switch hotkey
- tuxedo: Add virtual LampArray for TUXEDO NB04 devices
- tools/power/x86/intel-speed-select:
- Support displaying SST-PP revision 2 fields
- Skip uncore frequency update on newer generations of CPUs
- Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (112 commits)
thermal/drivers/acerhdf: Constify struct thermal_zone_device_ops
platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m
platform/x86: asus-wmi: fix build without CONFIG_SUSPEND
docs: ABI: Fix "aassociated" to "associated"
platform/x86: Add AMD ISP platform config for OV05C10
Documentation: admin-guide: pm: Add documentation for die_id
platform/x86/intel-uncore-freq: Add attributes to show die_id
platform/x86/intel: power-domains: Add interface to get Linux die ID
Documentation: admin-guide: pm: Add documentation for agent_types
platform/x86/intel-uncore-freq: Add attributes to show agent types
platform/x86/tuxedo: Prevent invalid Kconfig state
platform/x86: dell-ddv: Expose the battery health to userspace
platform/x86: dell-ddv: Expose the battery manufacture date to userspace
platform/x86: dell-ddv: Implement the battery matching algorithm
power: supply: core: Add additional health status values
platform/x86/amd/hsmp: acpi: Add sysfs files to display HSMP telemetry
platform/x86/amd/hsmp: Report power via hwmon sensors
platform/x86/amd/hsmp: Use a single DRIVER_VERSION for all hsmp modules
platform/mellanox: mlxreg-dpu: Fix smatch warnings
platform: mellanox: nvsw-sn2200: Fix .items in nvsw_sn2201_busbar_hotplug
...
|
||
|
Linus Torvalds
|
12e9b9e522 |
ipe/stable-6.16 PR 20250527
-----BEGIN PGP SIGNATURE----- iIcEABYIAC8WIQQzmBmZPBN6m/hUJmnyomI6a/yO7QUCaDZldREcd3VmYW5Aa2Vy bmVsLm9yZwAKCRDyomI6a/yO7eT7AQCSU1qiLEHpKEbxRtPyD9m6OBVRrS9joKEn zABAi00GEgD8C11CKWFemqaL6zexg6c0k51y90K1S1SPZ6pY9HwzZAY= =c1Gi -----END PGP SIGNATURE----- Merge tag 'ipe-pr-20250527' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe Pull IPE update from Fan Wu: "A single commit from Jasjiv Singh, that adds an errno field to IPE policy load auditing to log failures with error details, not just successes. This improves the security audit trail and helps diagnose policy deployment issues" * tag 'ipe-pr-20250527' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe: ipe: add errno field to IPE policy load auditing |
||
|
Linus Torvalds
|
1b98f357da |
Networking changes for 6.16.
Core
----
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing
again the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter
---------
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools
still use this interface.
- Implement support for wildcard netdevice in netdev basechain
and flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF
---
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols
---------
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the single
flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API
----------
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling
-----------------
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers
----------------------
- OpenVPN virtual driver: offload OpenVPN data channels processing
to the kernel-space, increasing the data transfer throughput WRT
the user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the stearing table handling to reduce significantly
the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing again
the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter:
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools still
use this interface.
- Implement support for wildcard netdevice in netdev basechain and
flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF:
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols:
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the
single flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API:
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling:
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers:
- OpenVPN virtual driver: offload OpenVPN data channels processing to
the kernel-space, increasing the data transfer throughput WRT the
user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the steering table handling to significantly
reduce the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature"
* tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits)
selftests/bpf: Fix bpf selftest build warning
selftests: netfilter: Fix skip of wildcard interface test
net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames
net: openvswitch: Fix the dead loop of MPLS parse
calipso: Don't call calipso functions for AF_INET sk.
selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
octeontx2-pf: QOS: Perform cache sync on send queue teardown
net: mana: Add support for Multi Vports on Bare metal
net: devmem: ncdevmem: remove unused variable
net: devmem: ksft: upgrade rx test to send 1K data
net: devmem: ksft: add 5 tuple FS support
net: devmem: ksft: add exit_wait to make rx test pass
net: devmem: ksft: add ipv4 support
net: devmem: preserve sockc_err
page_pool: fix ugly page_pool formatting
net: devmem: move list_add to net_devmem_bind_dmabuf.
selftests: netfilter: nft_queue.sh: include file transfer duration in log message
net: phy: mscc: Fix memory leak when using one step timestamping
...
|
||
|
Linus Torvalds
|
a61e260381 |
[GIT PULL for v6.16] media updates
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmg1X0MACgkQCF8+vY7k 4RX+9A//bExEiDHHgTptAhnPpdUKz4+WoNCasW/FIV41ry/OpjnbIuREio7/mkxk 03r/EEakycSCL8jrnIN7xHxUu5i53X3um2vzVpLgMfYHdxN1nGktGFFtbXq1uLlp An3e1fGR2VpU4aXs66Zy7nkaa4r2epfrKa0+dqsL9Tkix6wmbTYmJ2fxBtIjCupr bYm8WuQAvK8SvBuBvegAmr6AaVYF56bOh74B1VuRko6IAksHfrppNCUAFvXiU4NL FiqNyq9XaHXQtsS7gCCrjVUeTHpzdjjIZEkV3A+60G4Bc5A2wv17TzpR5GPMuUsQ BMHlGc1zex5AvieJLCDf5HityEkwD6+1eHxzuTgKtCM3gJYlJYJGMw8Gr219CVw4 +jJ6VImkfT/nScg+xsoyiYLHj/I4Awhj2mobnO6UnMyprTHC9AjnHA5eijvdSnRg wyAA80ofjRr6n21adwkw5QXDKEE/UZMEbiUmAkL4qIZ1Y1iBVvPzmCLDp9qCpq8+ lsxsn26pXFAGySzx9WWHEmdYWU6/Z0XkifRgYhOR6tcUoGDar2iLJlzn9AEm8hPS mU72eQOOdELVzr1rDYkGI0rskkYelmmJbWIQCkUEXhm4BhWn5EGK56stckmIcW0a X9e+GQDR5trjl8hAgLD/I80CI3bRKK9ox2VQdsRWKoho8NmkgyI= =4pGJ -----END PGP SIGNATURE----- Merge tag 'media/v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core fix: V4L2_BUF_TYPE_VIDEO_OVERLAY is capture, not output - New driver: Amlogic C3 ISP - New sensor drivers: ST VD55G1 and VD56G3, OmniVision OV02C10 - amlogic: c3-mipi-csi2: Handle 64-bits division - a fix for 64-bits division at the amlogic c3-mipi-csi2 driver - Changes at atomisp to support mainline mt9m114 driver and remove deprecated GPIO APIs - various cleanups, fixes and enhancements * tag 'media/v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (314 commits) media: rkvdec: h264: Support High 10 and 4:2:2 profiles media: rkvdec: Add get_image_fmt ops media: rkvdec: Initialize the m2m context before the controls media: rkvdec: h264: Limit minimum profile to constrained baseline media: mediatek: jpeg: support 34bits media: verisilicon: Free post processor buffers on error media: platform: mtk-mdp3: Remove unused mdp_get_plat_device media: amlogic: c3-mipi-csi2: Handle 64-bits division media: uvcvideo: Use dev_err_probe for devm_gpiod_get_optional media: uvcvideo: Fix deferred probing error media: uvcvideo: Rollback non processed entities on error media: uvcvideo: Send control events for partial succeeds media: uvcvideo: Return the number of processed controls media: uvcvideo: Do not turn on the camera for some ioctls media: uvcvideo: Make power management granular media: uvcvideo: Increase/decrease the PM counter per IOCTL media: uvcvideo: Create uvc_pm_(get|put) functions media: uvcvideo: Keep streaming state in the file handle Documentation: media: Add documentation file c3-isp.rst Documentation: media: Add documentation file metafmt-c3-isp.rst ... |
||
|
Linus Torvalds
|
3b66e6b3c0 |
cgroup: Changes for v6.16
- cgroup rstat shared the tracking tree across all controlers with the rationale being that a cgroup which is using one resource is likely to be using other resources at the same time (ie. if something is allocating memory, it's probably consuming CPU cycles). However, this turned out to not scale very well especially with memcg using rstat for internal operations which made memcg stat read and flush patterns substantially different from other controllers. JP Kobryn split the rstat tree per controller. - cgroup BPF support was hooking into cgroup init/exit paths directly. Convert them to use a notifier chain instead so that other usages can be added easily. The two of the patches which implement this are mislabeled as belonging to sched_ext instead of cgroup. Sorry. - Relatively minor cpuset updates. - Documentation updates. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaDYUmA4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGRhbAP90v8QwUkWEKGQSam8JY3by7PvrW6pV5ot+BGuM 4xu3BAEAjsJ9FdiwYLwKYqG7y59xhhBFOo6GpcP52kPp3znl+QQ= =6MIT -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cgroup rstat shared the tracking tree across all controllers with the rationale being that a cgroup which is using one resource is likely to be using other resources at the same time (ie. if something is allocating memory, it's probably consuming CPU cycles). However, this turned out to not scale very well especially with memcg using rstat for internal operations which made memcg stat read and flush patterns substantially different from other controllers. JP Kobryn split the rstat tree per controller. - cgroup BPF support was hooking into cgroup init/exit paths directly. Convert them to use a notifier chain instead so that other usages can be added easily. The two of the patches which implement this are mislabeled as belonging to sched_ext instead of cgroup. Sorry. - Relatively minor cpuset updates - Documentation updates * tag 'cgroup-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (23 commits) sched_ext: Convert cgroup BPF support to use cgroup_lifetime_notifier sched_ext: Introduce cgroup_lifetime_notifier cgroup: Minor reorganization of cgroup_create() cgroup, docs: cpu controller's interaction with various scheduling policies cgroup, docs: convert space indentation to tab indentation cgroup: avoid per-cpu allocation of size zero rstat cpu locks cgroup, docs: be specific about bandwidth control of rt processes cgroup: document the rstat per-cpu initialization cgroup: helper for checking rstat participation of css cgroup: use subsystem-specific rstat locks to avoid contention cgroup: use separate rstat trees for each subsystem cgroup: compare css to cgroup::self in helper for distingushing css cgroup: warn on rstat usage by early init subsystems cgroup/cpuset: drop useless cpumask_empty() in compute_effective_exclusive_cpumask() cgroup/rstat: Improve cgroup_rstat_push_children() documentation cgroup: fix goto ordering in cgroup_init() cgroup: fix pointer check in css_rstat_init() cgroup/cpuset: Add warnings to catch inconsistency in exclusive CPUs cgroup/cpuset: Fix obsolete comment in cpuset_css_offline() cgroup/cpuset: Always use cpu_active_mask ... |
||
|
Jasjiv Singh
|
1d887d6f81 |
ipe: add errno field to IPE policy load auditing
Users of IPE require a way to identify when and why an operation fails, allowing them to both respond to violations of policy and be notified of potentially malicious actions on their systems with respect to IPE. This patch introduces a new error field to the AUDIT_IPE_POLICY_LOAD event to log policy loading failures. Currently, IPE only logs successful policy loads, but not failures. Tracking failures is crucial to detect malicious attempts and ensure a complete audit trail for security events. The new error field will capture the following error codes: * -ENOKEY: Key used to sign the IPE policy not found in the keyring * -ESTALE: Attempting to update an IPE policy with an older version * -EKEYREJECTED: IPE signature verification failed * -ENOENT: Policy was deleted while updating * -EEXIST: Same name policy already deployed * -ERANGE: Policy version number overflow * -EINVAL: Policy version parsing error * -EPERM: Insufficient permission * -ENOMEM: Out of memory (OOM) * -EBADMSG: Policy is invalid Here are some examples of the updated audit record types: AUDIT_IPE_POLICY_LOAD(1422): audit: AUDIT1422 policy_name="Test_Policy" policy_version=0.0.1 policy_digest=sha256:84EFBA8FA71E62AE0A537FAB962F8A2BD1053964C4299DCA 92BFFF4DB82E86D3 auid=1000 ses=3 lsm=ipe res=1 errno=0 The above record shows a new policy has been successfully loaded into the kernel with the policy name, version, and hash with the errno=0. AUDIT_IPE_POLICY_LOAD(1422) with error: audit: AUDIT1422 policy_name=? policy_version=? policy_digest=? auid=1000 ses=3 lsm=ipe res=0 errno=-74 The above record shows a policy load failure due to an invalid policy (-EBADMSG). By adding this error field, we ensure that all policy load attempts, whether successful or failed, are logged, providing a comprehensive audit trail for IPE policy management. Signed-off-by: Jasjiv Singh <jasjivsingh@linux.microsoft.com> Signed-off-by: Fan Wu <wufan@kernel.org> |
||
|
Linus Torvalds
|
c89756bcf4 |
Power management updates for 6.16-rc1
- Fix potential division-by-zero error in em_compute_costs() (Yaxiong
Tian).
- Fix typos in energy model documentation and example driver code (Moon
Hee Lee, Atul Kumar Pant).
- Rearrange the energy model management code and add a new function for
adjusting a CPU energy model after adjusting the capacity of the
given CPU to it (Rafael Wysocki).
- Refactor cpufreq_online(), add and use cpufreq policy locking guards,
use __free() in policy reference counting, and clean up core cpufreq
code on top of that (Rafael Wysocki).
- Fix boost handling on CPU suspend/resume and sysfs updates (Viresh
Kumar).
- Fix des_perf clamping with max_perf in amd_pstate_update() (Dhananjay
Ugwekar).
- Add offline, online and suspend callbacks to the amd-pstate driver,
rename and use the existing amd_pstate_epp callbacks in it (Dhananjay
Ugwekar).
- Add support for the "Requested CPU Min frequency" BIOS option to the
amd-pstate driver (Dhananjay Ugwekar).
- Reset amd-pstate driver mode after running selftests (Swapnil
Sapkal).
- Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan
Chancellor).
- Add helper for governor checks to the schedutil cpufreq governor and
move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki).
- Populate the cpu_capacity sysfs entries from the intel_pstate driver
after registering asym capacity support (Ricardo Neri).
- Add support for enabling Energy-aware scheduling (EAS) to the
intel_pstate driver when operating in the passive mode on a hybrid
platform (Rafael Wysocki).
- Drop redundant cpus_read_lock() from store_local_boost() in the
cpufreq core (Seyediman Seyedarab).
- Replace sscanf() with kstrtouint() in the cpufreq code and use a
symbol instead of a raw number in it (Bowen Yu).
- Add support for autonomous CPU performance state selection to the
CPPC cpufreq driver (Lifeng Zheng).
- OPP: Add dev_pm_opp_set_level() (Praveen Talari).
- Introduce scope-based cleanup headers and mutex locking guards in OPP
core (Viresh Kumar).
- Switch OPP to use kmemdup_array() (Zhang Enpei).
- Optimize bucket assignment when next_timer_ns equals KTIME_MAX in the
menu cpuidle governor (Zhongqiu Han).
- Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla).
- Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem
Bityutskiy).
- Fix typos in two comments in the teo cpuidle governor (Atul Kumar
Pant).
- Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja
Kalla).
- Move debug runtime PM attributes to runtime_attrs[] (Rafael Wysocki).
- Add new devm_ functions for enabling runtime PM and runtime PM
reference counting (Bence Csókás).
- Remove size arguments from strscpy() calls in the hibernation core
code (Thorsten Blum).
- Adjust the handling of devices with asynchronous suspend enabled
during system suspend and resume to start resuming them immediately
after resuming their parents and to start suspending such a device
immediately after suspending its first child (Rafael Wysocki).
- Adjust messages printed during tasks freezing to avoid using
pr_cont() (Andrew Sayers, Paul Menzel).
- Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan
Zhang).
- Add missing wakeup source attribute relax_count to sysfs and
remove the space character at the end ofi the string produced by
pm_show_wakelocks() (Zijun Hu).
- Add configurable pm_test delay for hibernation (Zihuan Zhang).
- Disable asynchronous suspend in ucsi_ccg_probe() to prevent the
cypd4226 device on Tegra boards from suspending prematurely (Jon
Hunter).
- Unbreak printing PM debug messages during hibernation and clean up
some related code (Rafael Wysocki).
- Add a systemd service to run cpupower and change cpupower binding's
Makefile to use -lcpupower (John B. Wyatt IV, Francesco Poli).
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Merge tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"Once again, the changes are dominated by cpufreq updates, but this
time the majority of them are cpufreq core changes, mostly related to
the introduction of policy locking guards and __free() usage, and
fixes related to boost handling.
Still, there is also a significant update of the intel_pstate driver
making it register an energy model when running on a hybrid platform
which is used for enabling energy-aware scheduling (EAS) if the driver
operates in the passive mode (and schedutil is used as the cpufreq
governor for all CPUs which is the passive mode default).
There are some amd-pstate driver updates too, for a good measure,
including the "Requested CPU Min frequency" BIOS option support and
new online/offline callbacks.
In the cpuidle space, the most significant change is the addition of a
C1 demotion on/off sysfs knob to intel_idle which should help some
users to configure their systems more precisely. There is also the
conversion of the PSCI cpuidle driver to a faux device one and there
are two small updates of cpuidle governors.
Device power management is also modified quite a bit, especially the
handling of devices with asynchronous suspend and resume enabled
during system transitions. They are now going to be handled more
asynchronously during suspend transitions and somewhat less
aggressively during resume transitions.
Apart from the above, the operating performance points (OPP) library
is now going to use mutex locking guards and scope-based cleanup
helpers and there is the usual bunch of assorted fixes and code
cleanups.
Specifics:
- Fix potential division-by-zero error in em_compute_costs() (Yaxiong
Tian)
- Fix typos in energy model documentation and example driver code
(Moon Hee Lee, Atul Kumar Pant)
- Rearrange the energy model management code and add a new function
for adjusting a CPU energy model after adjusting the capacity of
the given CPU to it (Rafael Wysocki)
- Refactor cpufreq_online(), add and use cpufreq policy locking
guards, use __free() in policy reference counting, and clean up
core cpufreq code on top of that (Rafael Wysocki)
- Fix boost handling on CPU suspend/resume and sysfs updates (Viresh
Kumar)
- Fix des_perf clamping with max_perf in amd_pstate_update()
(Dhananjay Ugwekar)
- Add offline, online and suspend callbacks to the amd-pstate driver,
rename and use the existing amd_pstate_epp callbacks in it
(Dhananjay Ugwekar)
- Add support for the "Requested CPU Min frequency" BIOS option to
the amd-pstate driver (Dhananjay Ugwekar)
- Reset amd-pstate driver mode after running selftests (Swapnil
Sapkal)
- Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan
Chancellor)
- Add helper for governor checks to the schedutil cpufreq governor
and move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki)
- Populate the cpu_capacity sysfs entries from the intel_pstate
driver after registering asym capacity support (Ricardo Neri)
- Add support for enabling Energy-aware scheduling (EAS) to the
intel_pstate driver when operating in the passive mode on a hybrid
platform (Rafael Wysocki)
- Drop redundant cpus_read_lock() from store_local_boost() in the
cpufreq core (Seyediman Seyedarab)
- Replace sscanf() with kstrtouint() in the cpufreq code and use a
symbol instead of a raw number in it (Bowen Yu)
- Add support for autonomous CPU performance state selection to the
CPPC cpufreq driver (Lifeng Zheng)
- OPP: Add dev_pm_opp_set_level() (Praveen Talari)
- Introduce scope-based cleanup headers and mutex locking guards in
OPP core (Viresh Kumar)
- Switch OPP to use kmemdup_array() (Zhang Enpei)
- Optimize bucket assignment when next_timer_ns equals KTIME_MAX in
the menu cpuidle governor (Zhongqiu Han)
- Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla)
- Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem
Bityutskiy)
- Fix typos in two comments in the teo cpuidle governor (Atul Kumar
Pant)
- Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja
Kalla)
- Move debug runtime PM attributes to runtime_attrs[] (Rafael
Wysocki)
- Add new devm_ functions for enabling runtime PM and runtime PM
reference counting (Bence Csókás)
- Remove size arguments from strscpy() calls in the hibernation core
code (Thorsten Blum)
- Adjust the handling of devices with asynchronous suspend enabled
during system suspend and resume to start resuming them immediately
after resuming their parents and to start suspending such a device
immediately after suspending its first child (Rafael Wysocki)
- Adjust messages printed during tasks freezing to avoid using
pr_cont() (Andrew Sayers, Paul Menzel)
- Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan
Zhang)
- Add missing wakeup source attribute relax_count to sysfs and remove
the space character at the end ofi the string produced by
pm_show_wakelocks() (Zijun Hu)
- Add configurable pm_test delay for hibernation (Zihuan Zhang)
- Disable asynchronous suspend in ucsi_ccg_probe() to prevent the
cypd4226 device on Tegra boards from suspending prematurely (Jon
Hunter)
- Unbreak printing PM debug messages during hibernation and clean up
some related code (Rafael Wysocki)
- Add a systemd service to run cpupower and change cpupower binding's
Makefile to use -lcpupower (John B. Wyatt IV, Francesco Poli)"
* tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (72 commits)
cpufreq: CPPC: Add support for autonomous selection
cpufreq: Update sscanf() to kstrtouint()
cpufreq: Replace magic number
OPP: switch to use kmemdup_array()
PM: freezer: Rewrite restarting tasks log to remove stray *done.*
PM: runtime: fix denying of auto suspend in pm_suspend_timer_fn()
cpufreq: drop redundant cpus_read_lock() from store_local_boost()
cpupower: do not install files to /etc/default/
cpupower: do not call systemctl at install time
cpupower: do not write DESTDIR to cpupower.service
PM: sleep: Introduce pm_sleep_transition_in_progress()
cpufreq/amd-pstate: Avoid shadowing ret in amd_pstate_ut_check_driver()
cpufreq: intel_pstate: Document hybrid processor support
cpufreq: intel_pstate: EAS: Increase cost for CPUs using L3 cache
cpufreq: intel_pstate: EAS support for hybrid platforms
PM: EM: Introduce em_adjust_cpu_capacity()
PM: EM: Move CPU capacity check to em_adjust_new_capacity()
PM: EM: Documentation: Fix typos in example driver code
cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas()
PM: sleep: Introduce pm_suspend_in_progress()
...
|
||
|
Linus Torvalds
|
aacc73ceeb |
gpio updates for v6.16-rc1
GPIO core:
- use more lock guards where applicable
- refactor GPIO ACPI code and shrink it in the process by 8%
- move GPIO ACPI quirks into a separate file
- remove unneeded #ifdef
- convert GPIO devres helpers to using devm_add_action() where applicable
which shrinks and simplifies the code
- refactor GPIO descriptor validation in GPIO consumer interfaces
- don't allow setting values on input lines in the GPIO core which will
take off the burden from GPIO drivers of checking this down the line
- provide gpiod_is_equal() as a way of safely comparing two GPIO
descriptors (the only current user is in regulator core)
New drivers:
- add the GPIO module for the max77759 multifunction device
- add the GPIO driver for the VeriSilicon BLZP1600 GPIO controller
- add the GPIO driver for the Spacemit K1 SoC
Driver improvements:
- convert more drivers to using the new GPIO line value setter callbacks
- convert more drivers to making the irq_chip immutable as is recommended
by the interrupt subsystem
- extend build testing coverage by enabling more modules to be built with
COMPILE_TEST=y
- extend the gpio-aggregator module with a configfs interface that makes
the setup easier for user-space than the existing driver-level sysfs
attributes and also adds more advanced configuration features (such as
referring to aggregated lines by their original names or modifying
their names as exposed by the aggregated chip)
- add a missing mutex_destroy() in gpio-imx-scu
- add an OF polarity quirk for s5m8767
- allow building gpio-vf610 as a loadable module
- make gpio-mxc not hardcode its GPIO base number with GPIO SYSFS
interface disabled (another small step towards getting rid of the global
GPIO numberspace)
- add support for level-triggered interrupts to gpio-pca953x
- don't double-check the ngpios property in gpio-ds4520 as GPIO core
already does it
- don't double-check the number of GPIOs in gpio-imx-scu as GPIO core
already does it
- remove unused callbacks from gpio-max3191x
DT bindings:
- add device-tree bindings for max77759, spacemit,k1 and blzp1600 (new
drivers added this cycle)
- document more properties for gpio-vf610 and gpio-tegra186
- document a new pca95xx variant
- fix style of examples in several GPIO DT-binding documents
Misc:
- TODO list updates
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Merge tag 'gpio-updates-for-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"We have three new drivers, some refactoring in the GPIO core, lots of
various changes across many drivers, new configfs interface for the
virtual gpio-aggregator module and DT-bindings updates.
The treewide conversion of GPIO drivers to using the new value setter
callbacks is ongoing with another round of GPIO drivers updated. You
will also see these commits coming in from other subsystems as with
the relevant changes merged into mainline last cycle, I've started
converting GPIO providers located elsewhere than drivers/gpio/.
GPIO core:
- use more lock guards where applicable
- refactor GPIO ACPI code and shrink it in the process by 8%
- move GPIO ACPI quirks into a separate file
- remove unneeded #ifdef
- convert GPIO devres helpers to using devm_add_action() where
applicable which shrinks and simplifies the code
- refactor GPIO descriptor validation in GPIO consumer interfaces
- don't allow setting values on input lines in the GPIO core which
will take off the burden from GPIO drivers of checking this down
the line
- provide gpiod_is_equal() as a way of safely comparing two GPIO
descriptors (the only current user is in regulator core)
New drivers:
- add the GPIO module for the max77759 multifunction device
- add the GPIO driver for the VeriSilicon BLZP1600 GPIO controller
- add the GPIO driver for the Spacemit K1 SoC
Driver improvements:
- convert more drivers to using the new GPIO line value setter
callbacks
- convert more drivers to making the irq_chip immutable as is
recommended by the interrupt subsystem
- extend build testing coverage by enabling more modules to be built
with COMPILE_TEST=y
- extend the gpio-aggregator module with a configfs interface that
makes the setup easier for user-space than the existing
driver-level sysfs attributes and also adds more advanced
configuration features (such as referring to aggregated lines by
their original names or modifying their names as exposed by the
aggregated chip)
- add a missing mutex_destroy() in gpio-imx-scu
- add an OF polarity quirk for s5m8767
- allow building gpio-vf610 as a loadable module
- make gpio-mxc not hardcode its GPIO base number with GPIO SYSFS
interface disabled (another small step towards getting rid of the
global GPIO numberspace)
- add support for level-triggered interrupts to gpio-pca953x
- don't double-check the ngpios property in gpio-ds4520 as GPIO core
already does it
- don't double-check the number of GPIOs in gpio-imx-scu as GPIO core
already does it
- remove unused callbacks from gpio-max3191x
DT bindings:
- add device-tree bindings for max77759, spacemit,k1 and blzp1600
(new drivers added this cycle)
- document more properties for gpio-vf610 and gpio-tegra186
- document a new pca95xx variant
- fix style of examples in several GPIO DT-binding documents
Misc:
- TODO list updates"
* tag 'gpio-updates-for-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (123 commits)
gpio: timberdale: select GPIOLIB_IRQCHIP
gpio: lpc18xx: select GPIOLIB_IRQCHIP
gpio: grgpio: select GPIOLIB_IRQCHIP
gpio: bcm-kona: select GPIOLIB_IRQCHIP
dt-bindings: gpio: vf610: add ngpios and gpio-reserved-ranges
gpio: davinci: select GPIOLIB_IRQCHIP
gpiolib-acpi: Update file references in the Documentation and MAINTAINERS
gpiolib: acpi: Move quirks to a separate file
gpiolib: acpi: Add acpi_gpio_need_run_edge_events_on_boot() getter
gpiolib: acpi: Handle deferred list via new API
gpiolib: acpi: Make sure we fill struct acpi_gpio_info
gpiolib: acpi: Switch to use enum in acpi_gpio_in_ignore_list()
gpiolib: acpi: Use temporary variable for struct acpi_gpio_info
gpiolib: remove unneeded #ifdef
gpio: mpc8xxx: select GPIOLIB_IRQCHIP
gpio: pxa: select GPIOLIB_IRQCHIP
gpio: pxa: Make irq_chip immutable
gpio: timberdale: Make irq_chip immutable
gpio: xgene-sb: Make irq_chip immutable
gpio: davinci: Make irq_chip immutable
...
|
||
|
Linus Torvalds
|
3e443d1673 |
A moderately busy cycle for documentation this time around:
- The most significant change is the replacement of the old kernel-doc
script (a monstrous collection of Perl regexes that predates the Git era)
with a Python reimplementation. That, too, is a horrifying collection of
regexes, but in a much cleaner and more maintainable structure that
integrates far better with the Sphinx build system.
This change has been in linux-next for the full 6.15 cycle; the small
number of problems that turned up have been addressed, seemingly to
everybody's satisfaction. The Perl kernel-doc script remains in tree (as
scripts/kernel-doc.pl) and can be used with a command-line option if need
be. Unless some reason to keep it around materializes, it will probably
go away in 6.17.
Credit goes to Mauro Carvalho Chehab for doing all this work.
- Some RTLA documentation updates
- A handful of Chinese translations
- The usual collection of typo fixes, general updates, etc.
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Merge tag 'docs-6.16' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"A moderately busy cycle for documentation this time around:
- The most significant change is the replacement of the old
kernel-doc script (a monstrous collection of Perl regexes that
predates the Git era) with a Python reimplementation. That, too, is
a horrifying collection of regexes, but in a much cleaner and more
maintainable structure that integrates far better with the Sphinx
build system.
This change has been in linux-next for the full 6.15 cycle; the
small number of problems that turned up have been addressed,
seemingly to everybody's satisfaction. The Perl kernel-doc script
remains in tree (as scripts/kernel-doc.pl) and can be used with a
command-line option if need be. Unless some reason to keep it
around materializes, it will probably go away in 6.17.
Credit goes to Mauro Carvalho Chehab for doing all this work.
- Some RTLA documentation updates
- A handful of Chinese translations
- The usual collection of typo fixes, general updates, etc"
* tag 'docs-6.16' of git://git.lwn.net/linux: (85 commits)
Docs: doc-guide: update sphinx.rst Sphinx version number
docs: doc-guide: clarify latest theme usage
Documentation/scheduler: Fix typo in sched-stats domain field description
scripts: kernel-doc: prevent a KeyError when checking output
docs: kerneldoc.py: simplify exception handling logic
MAINTAINERS: update linux-doc entry to cover new Python scripts
docs: align with scripts/syscall.tbl migration
Documentation: NTB: Fix typo
Documentation: ioctl-number: Update table intro
docs: conf.py: drop backward support for old Sphinx versions
Docs: driver-api/basics: add kobject_event interfaces
Docs: relay: editing cleanups
docs: fix "incase" typo in coresight/panic.rst
Fix spelling error for 'parallel'
docs: admin-guide: fix typos in reporting-issues.rst
docs: dmaengine: add explanation for DMA_ASYNC_TX capability
Documentation: leds: improve readibility of multicolor doc
docs: fix typo in firmware-related section
docs: Makefile: Inherit PYTHONPYCACHEPREFIX setting as env variable
Documentation: ioctl-number: Update outdated submission info
...
|
||
|
Linus Torvalds
|
785cdec46e |
Core x86 updates for v6.16:
Boot code changes:
- A large series of changes to reorganize the x86 boot code into a better isolated
and easier to maintain base of PIC early startup code in arch/x86/boot/startup/,
by Ard Biesheuvel.
Motivation & background:
| Since commit
|
|
|
||
|
Linus Torvalds
|
eaed94d1f6 |
Scheduler updates for v6.16:
Core & fair scheduler changes:
- Tweak wait_task_inactive() to force dequeue sched_delayed tasks
(John Stultz)
- Adhere to place_entity() constraints (Peter Zijlstra)
- Allow decaying util_est when util_avg > CPU capacity (Pierre Gondois)
- Fix up wake_up_sync() vs DELAYED_DEQUEUE (Xuewen Yan)
Energy management:
- Introduce sched_update_asym_prefer_cpu() (K Prateek Nayak)
- cpufreq/amd-pstate: Update asym_prefer_cpu when core rankings change
(K Prateek Nayak)
- Align uclamp and util_est and call before freq update (Xuewen Yan)
CPU isolation:
- Make use of more than one housekeeping CPU (Phil Auld)
RT scheduler:
- Fix race in push_rt_task() (Harshit Agarwal)
- Add kernel cmdline option for rt_group_sched (Michal Koutný)
Scheduler topology support:
- Improve topology_span_sane speed (Steve Wahl)
Scheduler debugging:
- Move and extend the sched_process_exit() tracepoint (Andrii Nakryiko)
- Add RT_GROUP WARN checks for non-root task_groups (Michal Koutný)
- Fix trace_sched_switch(.prev_state) (Peter Zijlstra)
- Untangle cond_resched() and live-patching (Peter Zijlstra)
Fixes and cleanups:
- Misc fixes and cleanups (K Prateek Nayak, Michal Koutný,
Peter Zijlstra, Xuewen Yan)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core & fair scheduler changes:
- Tweak wait_task_inactive() to force dequeue sched_delayed tasks
(John Stultz)
- Adhere to place_entity() constraints (Peter Zijlstra)
- Allow decaying util_est when util_avg > CPU capacity (Pierre
Gondois)
- Fix up wake_up_sync() vs DELAYED_DEQUEUE (Xuewen Yan)
Energy management:
- Introduce sched_update_asym_prefer_cpu() (K Prateek Nayak)
- cpufreq/amd-pstate: Update asym_prefer_cpu when core rankings
change (K Prateek Nayak)
- Align uclamp and util_est and call before freq update (Xuewen Yan)
CPU isolation:
- Make use of more than one housekeeping CPU (Phil Auld)
RT scheduler:
- Fix race in push_rt_task() (Harshit Agarwal)
- Add kernel cmdline option for rt_group_sched (Michal Koutný)
Scheduler topology support:
- Improve topology_span_sane speed (Steve Wahl)
Scheduler debugging:
- Move and extend the sched_process_exit() tracepoint (Andrii
Nakryiko)
- Add RT_GROUP WARN checks for non-root task_groups (Michal Koutný)
- Fix trace_sched_switch(.prev_state) (Peter Zijlstra)
- Untangle cond_resched() and live-patching (Peter Zijlstra)
Fixes and cleanups:
- Misc fixes and cleanups (K Prateek Nayak, Michal Koutný, Peter
Zijlstra, Xuewen Yan)"
* tag 'sched-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
sched/uclamp: Align uclamp and util_est and call before freq update
sched/util_est: Simplify condition for util_est_{en,de}queue()
sched/fair: Fixup wake_up_sync() vs DELAYED_DEQUEUE
sched,livepatch: Untangle cond_resched() and live-patching
sched/core: Tweak wait_task_inactive() to force dequeue sched_delayed tasks
sched/fair: Adhere to place_entity() constraints
sched/debug: Print the local group's asym_prefer_cpu
cpufreq/amd-pstate: Update asym_prefer_cpu when core rankings change
sched/topology: Introduce sched_update_asym_prefer_cpu()
sched/fair: Use READ_ONCE() to read sg->asym_prefer_cpu
sched/isolation: Make use of more than one housekeeping cpu
sched/rt: Fix race in push_rt_task
sched: Add annotations to RT_GROUP_SCHED fields
sched: Add RT_GROUP WARN checks for non-root task_groups
sched: Do not construct nor expose RT_GROUP_SCHED structures if disabled
sched: Bypass bandwitdh checks with runtime disabled RT_GROUP_SCHED
sched: Skip non-root task_groups with disabled RT_GROUP_SCHED
sched: Add commadline option for RT_GROUP_SCHED toggling
sched: Always initialize rt_rq's task_group
sched: Remove unneeed macro wrap
...
|
||
|
Linus Torvalds
|
07046958f6 |
RCU pull request for v6.16
Summary of changes:
- Removed swake_up_one_online() workaround
- Reverted an incorrect rcuog wake-up fix from offline softirq
- Rust RCU Guard methods marked as inline
- Updated MAINTAINERS with Joel’s and Zqiang's new email address
- Replaced magic constant in rcu_seq_done_exact() with named constant
- Added warning mechanism to validate rcu_seq_done_exact()
- Switched SRCU polling API to use rcu_seq_done_exact()
- Commented on redundant delta check in rcu_seq_done_exact()
- Made ->gpwrap tests in rcutorture more frequent
- Fixed reuse of ARM64 images in rcutorture
- rcutorture improved to check Kconfig and reader conflict handling
- Extracted logic from rcu_torture_one_read() for clarity
- Updated LWN RCU API documentation links
- Enabled --do-rt in torture.sh for CONFIG_PREEMPT_RT
- Added tests for SRCU up/down reader primitives
- Added comments and delays checks in rcutorture
- Deprecated srcu_read_lock_lite() and srcu_read_unlock_lite() via checkpatch
- Added --do-normal and --do-no-normal to torture.sh
- Added RCU Rust binding tests to torture.sh
- Reduced CPU overcommit and removed MAXSMP/CPUMASK_OFFSTACK in TREE01
- Replaced kmalloc() with kcalloc() in rcuscale
- Refined listRCU example code for stale data elimination
- Fixed hardirq count bug for x86 in cpu_stall_cputime
- Added safety checks in rcu/nocb for offloaded rdp access
- Other miscellaneous changes
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Merge tag 'next.2025.05.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Joel Fernandes:
- Removed swake_up_one_online() workaround
- Reverted an incorrect rcuog wake-up fix from offline softirq
- Rust RCU Guard methods marked as inline
- Updated MAINTAINERS with Joel’s and Zqiang's new email address
- Replaced magic constant in rcu_seq_done_exact() with named constant
- Added warning mechanism to validate rcu_seq_done_exact()
- Switched SRCU polling API to use rcu_seq_done_exact()
- Commented on redundant delta check in rcu_seq_done_exact()
- Made ->gpwrap tests in rcutorture more frequent
- Fixed reuse of ARM64 images in rcutorture
- rcutorture improved to check Kconfig and reader conflict handling
- Extracted logic from rcu_torture_one_read() for clarity
- Updated LWN RCU API documentation links
- Enabled --do-rt in torture.sh for CONFIG_PREEMPT_RT
- Added tests for SRCU up/down reader primitives
- Added comments and delays checks in rcutorture
- Deprecated srcu_read_lock_lite() and srcu_read_unlock_lite() via checkpatch
- Added --do-normal and --do-no-normal to torture.sh
- Added RCU Rust binding tests to torture.sh
- Reduced CPU overcommit and removed MAXSMP/CPUMASK_OFFSTACK in TREE01
- Replaced kmalloc() with kcalloc() in rcuscale
- Refined listRCU example code for stale data elimination
- Fixed hardirq count bug for x86 in cpu_stall_cputime
- Added safety checks in rcu/nocb for offloaded rdp access
- Other miscellaneous changes
* tag 'next.2025.05.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (27 commits)
rcutorture: Fix issue with re-using old images on ARM64
rcutorture: Remove MAXSMP and CPUMASK_OFFSTACK from TREE01
rcutorture: Reduce TREE01 CPU overcommit
torture: Check for "Call trace:" as well as "Call Trace:"
rcutorture: Perform more frequent testing of ->gpwrap
torture: Add testing of RCU's Rust bindings to torture.sh
torture: Add --do-{,no-}normal to torture.sh
checkpatch: Deprecate srcu_read_lock_lite() and srcu_read_unlock_lite()
rcutorture: Comment invocations of tick_dep_set_task()
rcu/nocb: Add Safe checks for access offloaded rdp
rcuscale: using kcalloc() to relpace kmalloc()
doc/RCU/listRCU: refine example code for eliminating stale data
doc: Update LWN RCU API links in whatisRCU.rst
Revert "rcu/nocb: Fix rcuog wake-up from offline softirq"
rust: sync: rcu: Mark Guard methods as inline
rcu/cpu_stall_cputime: fix the hardirq count for x86 architecture
rcu: Remove swake_up_one_online() bandaid
MAINTAINERS: Update Zqiang's email address
rcutorture: Make torture.sh --do-rt use CONFIG_PREEMPT_RT
srcu: Use rcu_seq_done_exact() for polling API
...
|
||
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Linus Torvalds
|
f83fcb87f8 |
xfs: New code for 6.16
Signed-off-by: Carlos Maiolino <cem@kernel.org> -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQSmtYVZ/MfVMGUq1GNcsMJ8RxYuYwUCaDQXTQAKCRBcsMJ8RxYu YwUHAYDYYm9oit6AIr0AgTXBMJ+DHyqaszBy0VT2jQUP+yXxyrQc46QExXKU9YQV ffmGRAsBgN7ZdDI8D5qWySyOynB3b1Jn3/0jY82GscFK0k0oX3EtxbN9MdrovbgK qyO66BVx7w== =pG5y -----END PGP SIGNATURE----- Merge tag 'xfs-merge-6.16' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux Pull xfs updates from Carlos Maiolino: - Atomic writes for XFS - Remove experimental warnings for pNFS, scrub and parent pointers * tag 'xfs-merge-6.16' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (26 commits) xfs: add inode to zone caching for data placement xfs: free the item in xfs_mru_cache_insert on failure xfs: remove the EXPERIMENTAL warning for pNFS xfs: remove some EXPERIMENTAL warnings xfs: Remove deprecated xfs_bufd sysctl parameters xfs: stop using set_blocksize xfs: allow sysadmins to specify a maximum atomic write limit at mount time xfs: update atomic write limits xfs: add xfs_calc_atomic_write_unit_max() xfs: add xfs_file_dio_write_atomic() xfs: commit CoW-based atomic writes atomically xfs: add large atomic writes checks in xfs_direct_write_iomap_begin() xfs: add xfs_atomic_write_cow_iomap_begin() xfs: refine atomic write size check in xfs_file_write_iter() xfs: refactor xfs_reflink_end_cow_extent() xfs: allow block allocator to take an alignment hint xfs: ignore HW which cannot atomic write a single block xfs: add helpers to compute transaction reservation for finishing intent items xfs: add helpers to compute log item overhead xfs: separate out setting buftarg atomic writes limits ... |
||
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Rafael J. Wysocki
|
76524ffd10 |
Merge branches 'pm-runtime' and 'pm-sleep'
Merge updates related to system sleep handling and runtime PM for 6.16-rc1: - Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja Kalla). - Move debug runtime PM attributes to runtime_attrs[] (Rafael Wysocki). - Add new devm_ functions for enabling runtime PM and runtime PM reference counting (Bence Csókás). - Remove size arguments from strscpy() calls in the hibernation core code (Thorsten Blum). - Adjust the handling of devices with asynchronous suspend enabled during system suspend and resume to start resuming them immediately after resuming their parents and to start suspending such a device immediately after suspending its first child (Rafael Wysocki). - Adjust messages printed during tasks freezing to avoid using pr_cont() (Andrew Sayers, Paul Menzel). - Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan Zhang). - Add missing wakeup source attribute relax_count to sysfs and remove the space character at the end ofi the string produced by pm_show_wakelocks() (Zijun Hu). - Add configurable pm_test delay for hibernation (Zihuan Zhang). - Disable asynchronous suspend in ucsi_ccg_probe() to prevent the cypd4226 device on Tegra boards from suspending prematurely (Jon Hunter). - Unbreak printing PM debug messages during hibernation and clean up some related code (Rafael Wysocki). * pm-runtime: PM: runtime: fix denying of auto suspend in pm_suspend_timer_fn() PM: sysfs: Move debug runtime PM attributes to runtime_attrs[] PM: runtime: Add new devm functions * pm-sleep: PM: freezer: Rewrite restarting tasks log to remove stray *done.* PM: sleep: Introduce pm_sleep_transition_in_progress() PM: sleep: Introduce pm_suspend_in_progress() PM: sleep: Print PM debug messages during hibernation ucsi_ccg: Disable async suspend in ucsi_ccg_probe() PM: hibernate: add configurable delay for pm_test PM: wakeup: Delete space in the end of string shown by pm_show_wakelocks() PM: wakeup: Add missing wakeup source attribute relax_count PM: sleep: Remove unnecessary !! PM: sleep: Use two lines for "Restarting..." / "done" messages PM: sleep: Make suspend of devices more asynchronous PM: sleep: Suspend async parents after suspending children PM: sleep: Resume children after resuming the parent PM: hibernate: Remove size arguments when calling strscpy() |
||
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Rafael J. Wysocki
|
af86d7e88e |
Merge branch 'pm-cpuidle'
Merge cpuidle updates for 6.16-rc1: - Optimize bucket assignment when next_timer_ns equals KTIME_MAX in the menu cpuidle governor (Zhongqiu Han). - Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla). - Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem Bityutskiy). - Fix typos in two comments in the teo cpuidle governor (Atul Kumar Pant). * pm-cpuidle: cpuidle: psci: Avoid initializing faux device if no DT idle states are present Documentation: ABI: testing: document the new cpuidle sysfs file Documentation: admin-guide: pm: Document intel_idle C1 demotion intel_idle: Add C1 demotion on/off sysfs knob cpuidle: psci: Transition to the faux device interface cpuidle: menu: Optimize bucket assignment when next_timer_ns equals KTIME_MAX cpuidle: teo: Fix typos in two comments |
||
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Linus Torvalds
|
6f59de9bc0 |
for-6.16/block-20250523
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Merge tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- ublk updates:
- Add support for updating the size of a ublk instance
- Zero-copy improvements
- Auto-registering of buffers for zero-copy
- Series simplifying and improving GET_DATA and request lookup
- Series adding quiesce support
- Lots of selftests additions
- Various cleanups
- NVMe updates via Christoph:
- add per-node DMA pools and use them for PRP/SGL allocations
(Caleb Sander Mateos, Keith Busch)
- nvme-fcloop refcounting fixes (Daniel Wagner)
- support delayed removal of the multipath node and optionally
support the multipath node for private namespaces (Nilay Shroff)
- support shared CQs in the PCI endpoint target code (Wilfred
Mallawa)
- support admin-queue only authentication (Hannes Reinecke)
- use the crc32c library instead of the crypto API (Eric Biggers)
- misc cleanups (Christoph Hellwig, Marcelo Moreira, Hannes
Reinecke, Leon Romanovsky, Gustavo A. R. Silva)
- MD updates via Yu:
- Fix that normal IO can be starved by sync IO, found by mkfs on
newly created large raid5, with some clean up patches for bdev
inflight counters
- Clean up brd, getting rid of atomic kmaps and bvec poking
- Add loop driver specifically for zoned IO testing
- Eliminate blk-rq-qos calls with a static key, if not enabled
- Improve hctx locking for when a plug has IO for multiple queues
pending
- Remove block layer bouncing support, which in turn means we can
remove the per-node bounce stat as well
- Improve blk-throttle support
- Improve delay support for blk-throttle
- Improve brd discard support
- Unify IO scheduler switching. This should also fix a bunch of lockdep
warnings we've been seeing, after enabling lockdep support for queue
freezing/unfreezeing
- Add support for block write streams via FDP (flexible data placement)
on NVMe
- Add a bunch of block helpers, facilitating the removal of a bunch of
duplicated boilerplate code
- Remove obsolete BLK_MQ pci and virtio Kconfig options
- Add atomic/untorn write support to blktrace
- Various little cleanups and fixes
* tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux: (186 commits)
selftests: ublk: add test for UBLK_F_QUIESCE
ublk: add feature UBLK_F_QUIESCE
selftests: ublk: add test case for UBLK_U_CMD_UPDATE_SIZE
traceevent/block: Add REQ_ATOMIC flag to block trace events
ublk: run auto buf unregisgering in same io_ring_ctx with registering
io_uring: add helper io_uring_cmd_ctx_handle()
ublk: remove io argument from ublk_auto_buf_reg_fallback()
ublk: handle ublk_set_auto_buf_reg() failure correctly in ublk_fetch()
selftests: ublk: add test for covering UBLK_AUTO_BUF_REG_FALLBACK
selftests: ublk: support UBLK_F_AUTO_BUF_REG
ublk: support UBLK_AUTO_BUF_REG_FALLBACK
ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG
ublk: prepare for supporting to register request buffer automatically
ublk: convert to refcount_t
selftests: ublk: make IO & device removal test more stressful
nvme: rename nvme_mpath_shutdown_disk to nvme_mpath_remove_disk
nvme: introduce multipath_always_on module param
nvme-multipath: introduce delayed removal of the multipath head node
nvme-pci: derive and better document max segments limits
nvme-pci: use struct_size for allocation struct nvme_dev
...
|
||
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Rafael J. Wysocki
|
f34dc28343 |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.16-rc1: - Refactor cpufreq_online(), add and use cpufreq policy locking guards, use __free() in policy reference counting, and clean up core cpufreq code on top of that (Rafael Wysocki). - Fix boost handling on CPU suspend/resume and sysfs updates (Viresh Kumar). - Fix des_perf clamping with max_perf in amd_pstate_update() (Dhananjay Ugwekar). - Add offline, online and suspend callbacks to the amd-pstate driver, rename and use the existing amd_pstate_epp callbacks in it (Dhananjay Ugwekar). - Add support for the "Requested CPU Min frequency" BIOS option to the amd-pstate driver (Dhananjay Ugwekar). - Reset amd-pstate driver mode after running selftests (Swapnil Sapkal). - Add helper for governor checks to the schedutil cpufreq governor and move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki). - Populate the cpu_capacity sysfs entries from the intel_pstate driver after registering asym capacity support (Ricardo Neri). - Add support for enabling Energy-aware scheduling (EAS) to the intel_pstate driver when operating in the passive mode on a hybrid platform (Rafael Wysocki). - Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan Chancellor). - Drop redundant cpus_read_lock() from store_local_boost() in the cpufreq core (Seyediman Seyedarab). - Replace sscanf() with kstrtouint() in the cpufreq code and use a symbol instead of a raw number in it (Bowen Yu). - Add support for autonomous CPU performance state selection to the CPPC cpufreq driver (Lifeng Zheng). * pm-cpufreq: (31 commits) cpufreq: CPPC: Add support for autonomous selection cpufreq: Update sscanf() to kstrtouint() cpufreq: Replace magic number cpufreq: drop redundant cpus_read_lock() from store_local_boost() cpufreq/amd-pstate: Avoid shadowing ret in amd_pstate_ut_check_driver() cpufreq: intel_pstate: Document hybrid processor support cpufreq: intel_pstate: EAS: Increase cost for CPUs using L3 cache cpufreq: intel_pstate: EAS support for hybrid platforms cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas() cpufreq: intel_pstate: Populate the cpu_capacity sysfs entries arch_topology: Relocate cpu_scale to topology.[h|c] cpufreq/sched: Move cpufreq-specific EAS checks to cpufreq cpufreq/sched: schedutil: Add helper for governor checks amd-pstate-ut: Reset amd-pstate driver mode after running selftests cpufreq/amd-pstate: Add support for the "Requested CPU Min frequency" BIOS option cpufreq/amd-pstate: Add offline, online and suspend callbacks for amd_pstate_driver cpufreq: Force sync policy boost with global boost on sysfs update cpufreq: Preserve policy's boost state after resume cpufreq: Introduce policy_set_boost() cpufreq: Don't unnecessarily call set_boost() ... |
||
|
Linus Torvalds
|
181d8e399f |
vfs-6.16-rc1.misc
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Merge tag 'vfs-6.16-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual selections of misc updates for this cycle.
Features:
- Use folios for symlinks in the page cache
FUSE already uses folios for its symlinks. Mirror that conversion
in the generic code and the NFS code. That lets us get rid of a few
folio->page->folio conversions in this path, and some of the few
remaining users of read_cache_page() / read_mapping_page()
- Try and make a few filesystem operations killable on the VFS
inode->i_mutex level
- Add sysctl vfs_cache_pressure_denom for bulk file operations
Some workloads need to preserve more dentries than we currently
allow through out sysctl interface
A HDFS servers with 12 HDDs per server, on a HDFS datanode startup
involves scanning all files and caching their metadata (including
dentries and inodes) in memory. Each HDD contains approximately 2
million files, resulting in a total of ~20 million cached dentries
after initialization
To minimize dentry reclamation, they set vfs_cache_pressure to 1.
Despite this configuration, memory pressure conditions can still
trigger reclamation of up to 50% of cached dentries, reducing the
cache from 20 million to approximately 10 million entries. During
the subsequent cache rebuild period, any HDFS datanode restart
operation incurs substantial latency penalties until full cache
recovery completes
To maintain service stability, more dentries need to be preserved
during memory reclamation. The current minimum reclaim ratio (1/100
of total dentries) remains too aggressive for such workload. This
patch introduces vfs_cache_pressure_denom for more granular cache
pressure control
The configuration [vfs_cache_pressure=1,
vfs_cache_pressure_denom=10000] effectively maintains the full 20
million dentry cache under memory pressure, preventing datanode
restart performance degradation
- Avoid some jumps in inode_permission() using likely()/unlikely()
- Avid a memory access which is most likely a cache miss when
descending into devcgroup_inode_permission()
- Add fastpath predicts for stat() and fdput()
- Anonymous inodes currently don't come with a proper mode causing
issues in the kernel when we want to add useful VFS debug assert.
Fix that by giving them a proper mode and masking it off when we
report it to userspace which relies on them not having any mode
- Anonymous inodes currently allow to change inode attributes because
the VFS falls back to simple_setattr() if i_op->setattr isn't
implemented. This means the ownership and mode for every single
user of anon_inode_inode can be changed. Block that as it's either
useless or actively harmful. If specific ownership is needed the
respective subsystem should allocate anonymous inodes from their
own private superblock
- Raise SB_I_NODEV and SB_I_NOEXEC on the anonymous inode superblock
- Add proper tests for anonymous inode behavior
- Make it easy to detect proper anonymous inodes and to ensure that
we can detect them in codepaths such as readahead()
Cleanups:
- Port pidfs to the new anon_inode_{g,s}etattr() helpers
- Try to remove the uselib() system call
- Add unlikely branch hint return path for poll
- Add unlikely branch hint on return path for core_sys_select
- Don't allow signals to interrupt getdents copying for fuse
- Provide a size hint to dir_context for during readdir()
- Use writeback_iter directly in mpage_writepages
- Update compression and mtime descriptions in initramfs
documentation
- Update main netfs API document
- Remove useless plus one in super_cache_scan()
- Remove unnecessary NULL-check guards during setns()
- Add separate separate {get,put}_cgroup_ns no-op cases
Fixes:
- Fix typo in root= kernel parameter description
- Use KERN_INFO for infof()|info_plog()|infofc()
- Correct comments of fs_validate_description()
- Mark an unlikely if condition with unlikely() in
vfs_parse_monolithic_sep()
- Delete macro fsparam_u32hex()
- Remove unused and problematic validate_constant_table()
- Fix potential unsigned integer underflow in fs_name()
- Make file-nr output the total allocated file handles"
* tag 'vfs-6.16-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (43 commits)
fs: Pass a folio to page_put_link()
nfs: Use a folio in nfs_get_link()
fs: Convert __page_get_link() to use a folio
fs/read_write: make default_llseek() killable
fs/open: make do_truncate() killable
fs/open: make chmod_common() and chown_common() killable
include/linux/fs.h: add inode_lock_killable()
readdir: supply dir_context.count as readdir buffer size hint
vfs: Add sysctl vfs_cache_pressure_denom for bulk file operations
fuse: don't allow signals to interrupt getdents copying
Documentation: fix typo in root= kernel parameter description
include/cgroup: separate {get,put}_cgroup_ns no-op case
kernel/nsproxy: remove unnecessary guards
fs: use writeback_iter directly in mpage_writepages
fs: remove useless plus one in super_cache_scan()
fs: add S_ANON_INODE
fs: remove uselib() system call
device_cgroup: avoid access to ->i_rdev in the common case in devcgroup_inode_permission()
fs/fs_parse: Remove unused and problematic validate_constant_table()
fs: touch up predicts in inode_permission()
...
|
||
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Linus Torvalds
|
dc76285144 |
vfs-6.16-rc1.writepage
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaDBPTgAKCRCRxhvAZXjc ovkTAP9tyN24Oo+koY/2UedYBxM54cW4BCCRsVmkzfr8NSVdwwD/dg+v6gS8+nyD 3jlR0Z/08UyMHapB7fnAuFxPXXc8oAo= =e55o -----END PGP SIGNATURE----- Merge tag 'vfs-6.16-rc1.writepage' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull final writepage conversion from Christian Brauner: "This converts vboxfs from ->writepage() to ->writepages(). This was the last user of the ->writepage() method. So remove ->writepage() completely and all references to it" * tag 'vfs-6.16-rc1.writepage' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: fs: Remove aops->writepage mm: Remove swap_writepage() and shmem_writepage() ttm: Call shmem_writeout() from ttm_backup_backup_page() i915: Use writeback_iter() shmem: Add shmem_writeout() writeback: Remove writeback_use_writepage() migrate: Remove call to ->writepage vboxsf: Convert to writepages 9p: Add a migrate_folio method |
||
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SeongJae Park
|
6a4b3551ba |
Docs/damon: update titles and brief introductions to explain DAMOS
DAMON was initially developed only for data access monitoring, and then extended for not only access monitoring but also access-aware system operations (DAMOS). But the documents have old titles and brief introductions for only the monitoring part. Update the titles and the brief introductions to explain DAMOS part together. Link: https://lkml.kernel.org/r/20250513002715.40126-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Shashank Balaji
|
d16e7994c8 |
cgroup, docs: cpu controller's interaction with various scheduling policies
The cpu controller interface files account for or affect processes differently based on their scheduling policy, and the underlying scheduler used (fair-class vs. BPF scheduler). Document these differences Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
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Shashank Balaji
|
79bfa4b38a |
cgroup, docs: convert space indentation to tab indentation
The paragraphs on cpu.uclamp.{min,max} are space indented. Convert them to
tab indentation to make them uniform with the other paragraphs.
Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
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Coiby Xu
|
5eb3f60554 |
x86/crash: pass dm crypt keys to kdump kernel
1st kernel will build up the kernel command parameter dmcryptkeys as similar to elfcorehdr to pass the memory address of the stored info of dm crypt key to kdump kernel. Link: https://lkml.kernel.org/r/20250502011246.99238-8-coxu@redhat.com Signed-off-by: Coiby Xu <coxu@redhat.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: "Daniel P. Berrange" <berrange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Young <dyoung@redhat.com> Cc: Jan Pazdziora <jpazdziora@redhat.com> Cc: Liu Pingfan <kernelfans@gmail.com> Cc: Milan Broz <gmazyland@gmail.com> Cc: Ondrej Kozina <okozina@redhat.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Coiby Xu
|
9ebfa8dcae |
crash_dump: reuse saved dm crypt keys for CPU/memory hot-plugging
When there are CPU and memory hot un/plugs, the dm crypt keys may need to
be reloaded again depending on the solution for crash hotplug support.
Currently, there are two solutions. One is to utilizes udev to instruct
user space to reload the kdump kernel image and initrd, elfcorehdr and etc
again. The other is to only update the elfcorehdr segment introduced in
commit
|
||
|
Coiby Xu
|
180cf31af7 |
crash_dump: make dm crypt keys persist for the kdump kernel
A configfs /sys/kernel/config/crash_dm_crypt_keys is provided for user
space to make the dm crypt keys persist for the kdump kernel. Take the
case of dumping to a LUKS-encrypted target as an example, here is the life
cycle of the kdump copies of LUKS volume keys,
1. After the 1st kernel loads the initramfs during boot, systemd uses
an user-input passphrase to de-crypt the LUKS volume keys or simply
TPM-sealed volume keys and then save the volume keys to specified
keyring (using the --link-vk-to-keyring API) and the keys will expire
within specified time.
2. A user space tool (kdump initramfs loader like kdump-utils) create
key items inside /sys/kernel/config/crash_dm_crypt_keys to inform
the 1st kernel which keys are needed.
3. When the kdump initramfs is loaded by the kexec_file_load
syscall, the 1st kernel will iterate created key items, save the
keys to kdump reserved memory.
4. When the 1st kernel crashes and the kdump initramfs is booted, the
kdump initramfs asks the kdump kernel to create a user key using the
key stored in kdump reserved memory by writing yes to
/sys/kernel/crash_dm_crypt_keys/restore. Then the LUKS encrypted
device is unlocked with libcryptsetup's --volume-key-keyring API.
5. The system gets rebooted to the 1st kernel after dumping vmcore to
the LUKS encrypted device is finished
Eventually the keys have to stay in the kdump reserved memory for the
kdump kernel to unlock encrypted volumes. During this process, some
measures like letting the keys expire within specified time are desirable
to reduce security risk.
This patch assumes,
1) there are 128 LUKS devices at maximum to be unlocked thus
MAX_KEY_NUM=128.
2) a key description won't exceed 128 bytes thus KEY_DESC_MAX_LEN=128.
And here is a demo on how to interact with
/sys/kernel/config/crash_dm_crypt_keys,
# Add key #1
mkdir /sys/kernel/config/crash_dm_crypt_keys/7d26b7b4-e342-4d2d-b660-7426b0996720
# Add key #1's description
echo cryptsetup:7d26b7b4-e342-4d2d-b660-7426b0996720 > /sys/kernel/config/crash_dm_crypt_keys/description
# how many keys do we have now?
cat /sys/kernel/config/crash_dm_crypt_keys/count
1
# Add key# 2 in the same way
# how many keys do we have now?
cat /sys/kernel/config/crash_dm_crypt_keys/count
2
# the tree structure of /crash_dm_crypt_keys configfs
tree /sys/kernel/config/crash_dm_crypt_keys/
/sys/kernel/config/crash_dm_crypt_keys/
├── 7d26b7b4-e342-4d2d-b660-7426b0996720
│ └── description
├── count
├── fce2cd38-4d59-4317-8ce2-1fd24d52c46a
│ └── description
Link: https://lkml.kernel.org/r/20250502011246.99238-3-coxu@redhat.com
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: "Daniel P. Berrange" <berrange@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Jan Pazdziora <jpazdziora@redhat.com>
Cc: Liu Pingfan <kernelfans@gmail.com>
Cc: Milan Broz <gmazyland@gmail.com>
Cc: Ondrej Kozina <okozina@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Shashank Balaji
|
dc9f08bac2 |
cgroup, docs: be specific about bandwidth control of rt processes
Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Greg Kroah-Hartman
|
6381f99504 |
thunderbolt: Changes for v6.16 merge window
This includes following USB4/Thunderbolt changes for the v6.16 merge window: - Enable wake on connect and disconnect over system suspend. - Add mapping between Type-C ports and USB4 ports on non-Chrome systems. - Expose tunneling related events to userspace. All these have been in linux-next with no reported issues. -----BEGIN PGP SIGNATURE----- iQJUBAABCgA+FiEEVTdhRGBbNzLrSUBaAP2fSd+ZWKAFAmgsVNUgHG1pa2Eud2Vz dGVyYmVyZ0BsaW51eC5pbnRlbC5jb20ACgkQAP2fSd+ZWKCopQ/9GsI7l9d5gswZ w+LE1ouz5lOFlw+RV3EpMeb8nSzkTSoxtlM4gOlRg5zEec4l9MW6LUVQ/n0mBCNY R22Jc3KhgFqIX1G0XOW8t4g3piLAG3Q7NauzTSdRrC3bGKV73FjMw3WMSmlEE68E jQxmsfPnJdcM9joxCdHxIqVBfmTiv+IKU7+60a8YnIllfd+aaXcrbU4bRkgN/dbN f0Hw5av0K5K0qNejn/egaQHxBp9zJwzIitYTnLLncc5s0s44LPauJt+bxakeje92 bae4oPJUZlJovOXwclT9alcZ78GjRNNx80CyF7QXVFWb6eXweKrOhveouyGaeXWw x4kJDZW2LroL5A1f+7i4iX6Ng9tqkCl18/KUGz+NDjghD9YTQtj1VYQlo0HEzX0O lnNxXPjkNAiTxxdGmcwhYSWZPGblTWfxYcrnrcnr11EBFWXyNw0i06sq4b1MdGpO 2yTWlwQLFgLkMp003LUIUTiNVj7aEsAiPmHoApRfwcsehGLhPpPTpBDiFMLrvjwW ycZ5obGMsBsvrZMr3hSEACiGIT0j2pjl7IxVCaznjVW0qyaIv56mePBAxHCyL8nu wkDilYctsGwjIdBhsN4laZ7uGT3fByjBc6oetx+3VjY4ZO9oLKKQLcH49/ZGrfdP lZMUkiwyDR8Qsv8lNg6JXqg0SIFAqQE= =yU5Q -----END PGP SIGNATURE----- Merge tag 'thunderbolt-for-v6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next Mika writes: thunderbolt: Changes for v6.16 merge window This includes following USB4/Thunderbolt changes for the v6.16 merge window: - Enable wake on connect and disconnect over system suspend. - Add mapping between Type-C ports and USB4 ports on non-Chrome systems. - Expose tunneling related events to userspace. All these have been in linux-next with no reported issues. * tag 'thunderbolt-for-v6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: Documentation/admin-guide: Document Thunderbolt/USB4 tunneling events thunderbolt: Notify userspace about firmware CM tunneling events thunderbolt: Notify userspace about software CM tunneling events thunderbolt: Introduce domain event message handler usb: typec: Connect Type-C port with associated USB4 port thunderbolt: Add Thunderbolt/USB4 <-> USB3 match function thunderbolt: Expose usb4_port_index() to other modules thunderbolt: Fix a logic error in wake on connect thunderbolt: Use wake on connect and disconnect over suspend |
||
|
Shivam Sharma
|
95112d977f |
docs: admin-guide: fix typos in reporting-issues.rst
Correct pin-point to pinpoint, If that the case to If that is the case, and its only slightly modified to it's only slightly modified in Documentation/admin-guide/reporting-issues.rst for proper spelling and grammar. Signed-off-by: Shivam Sharma <10sharmashivam@gmail.com> Acked-by: Thorsten Leemhuis <linux@leemhuis.info> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20250518172658.6983-1-10sharmashivam@gmail.com> |
||
|
Joel Fernandes
|
aafe12f980 |
rcutorture: Perform more frequent testing of ->gpwrap
Currently, the ->gpwrap is not tested (at all per my testing) due to the requirement of a large delta between a CPU's rdp->gp_seq and its node's rnp->gpseq. This results in no testing of ->gpwrap being set. This patch by default adds 5 minutes of testing with ->gpwrap forced by lowering the delta between rdp->gp_seq and rnp->gp_seq to just 8 GPs. All of this is configurable, including the active time for the setting and a full testing cycle. By default, the first 25 minutes of a test will have the _default_ behavior there is right now (ULONG_MAX / 4) delta. Then for 5 minutes, we switch to a smaller delta causing 1-2 wraps in 5 minutes. I believe this is reasonable since we at least add a little bit of testing for usecases where ->gpwrap is set. [ Apply fix for Dan Carpenter's bug report on init path cleanup. ] [ Apply kernel doc warning fix from Akira Yokosawa. ] Tested-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com> |
||
|
Jakub Kicinski
|
bebd7b2626 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc7). Conflicts: tools/testing/selftests/drivers/net/hw/ncdevmem.c |
||
|
Srinivas Pandruvada
|
e636e3f742
|
Documentation: admin-guide: pm: Add documentation for die_id
Add documentation to describe die_id attribute. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20250508230250.1186619-6-srinivas.pandruvada@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
||
|
Srinivas Pandruvada
|
bfbe7729d6
|
Documentation: admin-guide: pm: Add documentation for agent_types
Add documentation to describe agent_types attribute. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20250508230250.1186619-3-srinivas.pandruvada@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
||
|
Yafang Shao
|
e7b9cea718
|
vfs: Add sysctl vfs_cache_pressure_denom for bulk file operations
On our HDFS servers with 12 HDDs per server, a HDFS datanode[0] startup involves scanning all files and caching their metadata (including dentries and inodes) in memory. Each HDD contains approximately 2 million files, resulting in a total of ~20 million cached dentries after initialization. To minimize dentry reclamation, we set vfs_cache_pressure to 1. Despite this configuration, memory pressure conditions can still trigger reclamation of up to 50% of cached dentries, reducing the cache from 20 million to approximately 10 million entries. During the subsequent cache rebuild period, any HDFS datanode restart operation incurs substantial latency penalties until full cache recovery completes. To maintain service stability, we need to preserve more dentries during memory reclamation. The current minimum reclaim ratio (1/100 of total dentries) remains too aggressive for our workload. This patch introduces vfs_cache_pressure_denom for more granular cache pressure control. The configuration [vfs_cache_pressure=1, vfs_cache_pressure_denom=10000] effectively maintains the full 20 million dentry cache under memory pressure, preventing datanode restart performance degradation. Link: https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html#NameNode+and+DataNodes [0] Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/20250511083624.9305-1-laoar.shao@gmail.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Rafael J. Wysocki
|
f20af84c29 |
cpufreq: intel_pstate: Document hybrid processor support
Describe the support for hybrid processors in intel_pstate, including the CAS and EAS support, in the admin-guide documentation. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1935040.CQOukoFCf9@rjwysocki.net |
||
|
Ingo Molnar
|
c4070e1996 |
Merge commit 'its-for-linus-20250509-merge' into x86/core, to resolve conflicts
Conflicts: Documentation/admin-guide/hw-vuln/index.rst arch/x86/include/asm/cpufeatures.h arch/x86/kernel/alternative.c arch/x86/kernel/cpu/bugs.c arch/x86/kernel/cpu/common.c drivers/base/cpu.c include/linux/cpu.h Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Ingo Molnar
|
69cb33e2f8 |
Merge branch 'x86/microcode' into x86/core, to merge dependent commits
Prepare to resolve conflicts with an upstream series of fixes that conflict
with pending x86 changes:
|
||
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Petr Vaněk
|
678927c0c9
|
Documentation: fix typo in root= kernel parameter description
Fixes a typo in the root= parameter description, changing
"this a a" to "this is a".
Fixes:
|
||
|
Alexander Graf
|
3498209ff6 |
Documentation: add documentation for KHO
With KHO in place, let's add documentation that describes what it is and how to use it. Link: https://lkml.kernel.org/r/20250509074635.3187114-17-changyuanl@google.com Signed-off-by: Alexander Graf <graf@amazon.com> Co-developed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Co-developed-by: Changyuan Lyu <changyuanl@google.com> Signed-off-by: Changyuan Lyu <changyuanl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Anthony Yznaga <anthony.yznaga@oracle.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Ashish Kalra <ashish.kalra@amd.com> Cc: Ben Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Betkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Gowans <jgowans@amazon.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Marc Rutland <mark.rutland@arm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Pratyush Yadav <ptyadav@amazon.de> Cc: Rob Herring <robh@kernel.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleinxer <tglx@linutronix.de> Cc: Thomas Lendacky <thomas.lendacky@amd.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Zhongkun He
|
b40599930f |
mm: add max swappiness arg to lru_gen for anonymous memory only
The MGLRU already supports reclaiming only from anonymous memory via the /sys/kernel/debug/lru_gen interface. Now, memory.reclaim also supports the swappiness=max parameter to enable reclaiming solely from anonymous memory. To unify the semantics of proactive reclaiming from anonymous folios, the max parameter is introduced. [hezhongkun.hzk@bytedance.com: use strcmp instead of strncmp, if swappiness is not set, use the default value] Link: https://lkml.kernel.org/r/20250507071057.3184240-1-hezhongkun.hzk@bytedance.com [akpm@linux-foundation.org: tweak coding style] Link: https://lkml.kernel.org/r/65181f7745d657d664d833c26d8a94cae40538b9.1745225696.git.hezhongkun.hzk@bytedance.com Signed-off-by: Zhongkun He <hezhongkun.hzk@bytedance.com> Acked-by: Muchun Song <muchun.song@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Zhongkun He
|
68a1436bde |
mm: add swappiness=max arg to memory.reclaim for only anon reclaim
Patch series "add max arg to swappiness in memory.reclaim and lru_gen", v4.
This patchset adds max arg to swappiness in memory.reclaim and lru_gen for
anon only proactive memory reclaim.
With commit <68cd9050d871> ("mm: add swappiness= arg to memory.reclaim")
we can submit an additional swappiness=<val> argument to memory.reclaim.
It is very useful because we can dynamically adjust the reclamation ratio
based on the anonymous folios and file folios of each cgroup. For
example,when swappiness is set to 0, we only reclaim from file folios.
But we can not relciam memory just from anon folios.
This patchset introduces a new macro, SWAPPINESS_ANON_ONLY, defined as
MAX_SWAPPINESS + 1, represent the max arg semantics. It specifically
indicates that reclamation should occur only from anonymous pages.
Patch 1 adds swappiness=max arg to memory.reclaim suggested-by: Yosry
Ahmed
Patch 2 add more comments for cache_trim_mode from Johannes Weiner in [1].
Patch 3 add max arg to lru_gen for proactive memory reclaim in MGLRU. The
MGLRU already supports reclaiming exclusively from anonymous pages. This
patch formalizes that behavior by introducing a max parameter to represent
the corresponding semantics.
Patch 4 using SWAPPINESS_ANON_ONLY in MGLRU Using SWAPPINESS_ANON_ONLY
instead of MAX_SWAPPINESS + 1 to indicate reclaiming only from anonymous
pages makes the code more readable and explicit
Here is the previous discussion:
https://lore.kernel.org/all/20250314033350.1156370-1-hezhongkun.hzk@bytedance.com/
https://lore.kernel.org/all/20250312094337.2296278-1-hezhongkun.hzk@bytedance.com/
https://lore.kernel.org/all/20250318135330.3358345-1-hezhongkun.hzk@bytedance.com/
This patch (of 4):
With commit <68cd9050d871> ("mm: add swappiness= arg to memory.reclaim")
we can submit an additional swappiness=<val> argument to memory.reclaim.
It is very useful because we can dynamically adjust the reclamation ratio
based on the anonymous folios and file folios of each cgroup. For
example,when swappiness is set to 0, we only reclaim from file folios.
However,we have also encountered a new issue: when swappiness is set to
the MAX_SWAPPINESS, it may still only reclaim file folios.
So, we hope to add a new arg 'swappiness=max' in memory.reclaim where
proactive memory reclaim only reclaims from anonymous folios when
swappiness is set to max. The swappiness semantics from a user
perspective remain unchanged.
For example, something like this:
echo "2M swappiness=max" > /sys/fs/cgroup/memory.reclaim
will perform reclaim on the rootcg with a swappiness setting of 'max' (a
new mode) regardless of the file folios. Users have a more comprehensive
view of the application's memory distribution because there are many
metrics available. For example, if we find that a certain cgroup has a
large number of inactive anon folios, we can reclaim only those and skip
file folios, because with the zram/zswap, the IO tradeoff that
cache_trim_mode or other file first logic is making doesn't hold - file
refaults will cause IO, whereas anon decompression will not.
With this patch, the swappiness argument of memory.reclaim has a new
mode 'max', means reclaiming just from anonymous folios both in traditional
LRU and MGLRU.
Link: https://lkml.kernel.org/r/cover.1745225696.git.hezhongkun.hzk@bytedance.com
Link: https://lore.kernel.org/all/20250314141833.GA1316033@cmpxchg.org/ [1]
Link: https://lkml.kernel.org/r/519e12b9b1f8c31a01e228c8b4b91a2419684f77.1745225696.git.hezhongkun.hzk@bytedance.com
Signed-off-by: Zhongkun He <hezhongkun.hzk@bytedance.com>
Suggested-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Acked-by: Muchun Song <muchun.song@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Shakeel Butt
|
c6c895cf2d |
memcg-introduce-non-blocking-limit-setting-option-v3
add more explanation in doc and commit message on O_NONBLOCK side-effects (Johannes) Link: https://lkml.kernel.org/r/20250506232833.3109790-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Greg Thelen <gthelen@google.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Cc: Christian Brauner <brauner@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Shakeel Butt
|
c8e6002bd6 |
memcg: introduce non-blocking limit setting option
Setting the max and high limits can trigger synchronous reclaim and/or oom-kill if the usage is higher than the given limit. This behavior is fine for newly created cgroups but it can cause issues for the node controller while setting limits for existing cgroups. In our production multi-tenant and overcommitted environment, we are seeing priority inversion when the node controller dynamically adjusts the limits of running jobs of different priorities. Based on the system situation, the node controller may reduce the limits of lower priority jobs and increase the limits of higher priority jobs. However we are seeing node controller getting stuck for long period of time while reclaiming from lower priority jobs while setting their limits and also spends a lot of its own CPU. One of the workaround we are trying is to fork a new process which sets the limit of the lower priority job along with setting an alarm to get itself killed if it get stuck in the reclaim for lower priority job. However we are finding it very unreliable and costly. Either we need a good enough time buffer for the alarm to be delivered after setting limit and potentialy spend a lot of CPU in the reclaim or be unreliable in setting the limit for much shorter but cheaper (less reclaim) alarms. Let's introduce new limit setting option which does not trigger reclaim and/or oom-kill and let the processes in the target cgroup to trigger reclaim and/or throttling and/or oom-kill in their next charge request. This will make the node controller on multi-tenant overcommitted environment much more reliable. Explanation from Johannes on side-effects of O_NONBLOCK limit change: It's usually the allocating tasks inside the group bearing the cost of limit enforcement and reclaim. This allows a (privileged) updater from outside the group to keep that cost in there - instead of having to help, from a context that doesn't necessarily make sense. I suppose the tradeoff with that - and the reason why this was doing sync reclaim in the first place - is that, if the group is idle and not trying to allocate more, it can take indefinitely for the new limit to actually be met. It should be okay in most scenarios in practice. As the capacity is reallocated from group A to B, B will exert pressure on A once it tries to claim it and thereby shrink it down. If A is idle, that shouldn't be hard. If A is running, it's likely to fault/allocate soon-ish and then join the effort. It does leave a (malicious) corner case where A is just busy-hitting its memory to interfere with the clawback. This is comparable to reclaiming memory.low overage from the outside, though, which is an acceptable risk. Users of O_NONBLOCK just need to be aware. Link: https://lkml.kernel.org/r/20250419183545.1982187-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Greg Thelen <gthelen@google.com> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christoph Lameter (Ampere)
|
786d5cc2b9 |
Update Christoph's Email address and make it consistent
Use cl@gentwo.org throughout and remove the old email addresses. Link: https://lkml.kernel.org/r/8b962f57-4d98-cbb0-cd82-b6ba456733e8@gentwo.org Signed-off-by: Christoph Lameter <cl@gentwo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
a7bb1e7545 |
Docs/admin-guide/mm/damon/usage: document 'nid' file
Add description of 'nid' file, which is optionally used for specific DAMOS
quota goal metrics such as node_mem_{used,free}_bp on DAMON usage
document.
Link: https://lkml.kernel.org/r/20250420194030.75838-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Yunjeong Mun <yunjeong.mun@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Zhiquan Li
|
247021624a |
crash: export PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo
On Intel TDX guest, unaccepted memory is unusable free memory which is not managed by buddy, until it's accepted by guest. Before that, it cannot be accessed by the first kernel as well as the kexec'ed kernel. The kexec'ed kernel will skip these pages and fill in zero data for the reader of vmcore. The dump tool like makedumpfile creates a page descriptor (size 24 bytes) for each non-free page, including zero data page, but it will not create descriptor for free pages. If it is not able to distinguish these unaccepted pages with zero data pages, a certain amount of space will be wasted in proportion (~1/170). In fact, as a special kind of free page the unaccepted pages should be excluded, like the real free pages. Export the page type PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo, so that dump tool can identify whether a page is unaccepted. [zhiquan1.li@intel.com: fix docs: "Title underline too short" warning] Link: https://lore.kernel.org/all/20240809114854.3745464-5-kirill.shutemov@linux.intel.com/ Link: https://lkml.kernel.org/r/20250405060610.860465-1-zhiquan1.li@intel.com Link: https://lore.kernel.org/all/20240809114854.3745464-5-kirill.shutemov@linux.intel.com/ Link: https://lkml.kernel.org/r/20250403030801.758687-1-zhiquan1.li@intel.com Signed-off-by: Zhiquan Li <zhiquan1.li@intel.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Baoquan He <bhe@redhat.com> Cc: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Zhiquan Li <zhiquan1.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sergey Senozhatsky
|
b05f8d7e07 |
Documentation: zram: update IDLE pages tracking documentation
Move IDLE pages tracking into a separate chapter because there are
multiple features that use (or depend on) it either in built-in variant
("mark all") or in extended variant (ac-time tracking).
In addition, recompression doesn't require memory tracking to be enabled
in order to be able to perform idle recompression.
Link: https://lkml.kernel.org/r/20250416042833.3858827-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reported-by: Shin Kawamura <kawasin@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Andrei Vagin
|
a516403787 |
fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions
Patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions", v2. Introduce the PAGE_IS_GUARD flag in the PAGEMAP_SCAN ioctl to expose information about guard regions. This allows userspace tools, such as CRIU, to detect and handle guard regions. Currently, CRIU utilizes PAGEMAP_SCAN as a more efficient alternative to parsing /proc/pid/pagemap. Without this change, guard regions are incorrectly reported as swap-anon regions, leading CRIU to attempt dumping them and subsequently failing. The series includes updates to the documentation and selftests to reflect the new functionality. This patch (of 3): Introduce the PAGE_IS_GUARD flag in the PAGEMAP_SCAN ioctl to expose information about guard regions. This allows userspace tools, such as CRIU, to detect and handle guard regions. Link: https://lkml.kernel.org/r/20250324065328.107678-1-avagin@google.com Link: https://lkml.kernel.org/r/20250324065328.107678-2-avagin@google.com Signed-off-by: Andrei Vagin <avagin@gmail.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Michal Clapinski
|
98c9389042 |
mm/compaction: reduce the difference between low and high watermarks
Reduce the diff between low and high watermarks when compaction proactiveness is set to high. This allows users who set the proactiveness really high to have more stable fragmentation score over time. Link: https://lkml.kernel.org/r/20250404111103.1994507-3-mclapinski@google.com Signed-off-by: Michal Clapinski <mclapinski@google.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sergey Senozhatsky
|
cf42d4cccf |
zram: modernize writeback interface
The writeback interface supports a page_index=N parameter which performs
writeback of the given page. Since we rarely need to writeback just one
single page, the typical use case involves a number of writeback calls,
each performing writeback of one page:
echo page_index=100 > zram0/writeback
...
echo page_index=200 > zram0/writeback
echo page_index=500 > zram0/writeback
...
echo page_index=700 > zram0/writeback
One obvious downside of this is that it increases the number of syscalls.
Less obvious, but a significantly more important downside, is that when
given only one page to post-process zram cannot perform an optimal target
selection. This becomes a critical limitation when writeback_limit is
enabled, because under writeback_limit we want to guarantee the highest
memory savings hence we first need to writeback pages that release the
highest amount of zsmalloc pool memory.
This patch adds page_indexes=LOW-HIGH parameter to the writeback
interface:
echo page_indexes=100-200 page_indexes=500-700 > zram0/writeback
This gives zram a chance to apply an optimal target selection strategy on
each iteration of the writeback loop.
We also now permit multiple page_index parameters per call (previously
zram would recognize only one page_index) and a mix or single pages and
page ranges:
echo page_index=42 page_index=99 page_indexes=100-200 \
page_indexes=500-700 > zram0/writeback
Apart from that the patch also unifies parameters passing and resembles
other "modern" zram device attributes (e.g. recompression), while the old
interface used a mixed scheme: values-less parameters for mode and a
key=value format for page_index. We still support the "old" value-less
format for compatibility reasons.
[senozhatsky@chromium.org: simplify parse_page_index() range checks, per Brian]
nk: https://lkml.kernel.org/r/20250404015327.2427684-1-senozhatsky@chromium.org
[sozhatsky@chromium.org: fix uninitialized variable in zram_writeback_slots(), per Dan]
nk: https://lkml.kernel.org/r/20250409112611.1154282-1-senozhatsky@chromium.org
Link: https://lkml.kernel.org/r/20250327015818.4148660-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Brian Geffon <bgeffon@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Richard Chang <richardycc@google.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Pawan Gupta
|
facd226f7e |
x86/its: Add support for RSB stuffing mitigation
When retpoline mitigation is enabled for spectre-v2, enabling call-depth-tracking and RSB stuffing also mitigates ITS. Add cmdline option indirect_target_selection=stuff to allow enabling RSB stuffing mitigation. When retpoline mitigation is not enabled, =stuff option is ignored, and default mitigation for ITS is deployed. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> |
||
|
Pawan Gupta
|
2665281a07 |
x86/its: Add "vmexit" option to skip mitigation on some CPUs
Ice Lake generation CPUs are not affected by guest/host isolation part of ITS. If a user is only concerned about KVM guests, they can now choose a new cmdline option "vmexit" that will not deploy the ITS mitigation when CPU is not affected by guest/host isolation. This saves the performance overhead of ITS mitigation on Ice Lake gen CPUs. When "vmexit" option selected, if the CPU is affected by ITS guest/host isolation, the default ITS mitigation is deployed. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> |
||
|
Pawan Gupta
|
f4818881c4 |
x86/its: Enable Indirect Target Selection mitigation
Indirect Target Selection (ITS) is a bug in some pre-ADL Intel CPUs with eIBRS. It affects prediction of indirect branch and RETs in the lower half of cacheline. Due to ITS such branches may get wrongly predicted to a target of (direct or indirect) branch that is located in the upper half of the cacheline. Scope of impact =============== Guest/host isolation -------------------- When eIBRS is used for guest/host isolation, the indirect branches in the VMM may still be predicted with targets corresponding to branches in the guest. Intra-mode ---------- cBPF or other native gadgets can be used for intra-mode training and disclosure using ITS. User/kernel isolation --------------------- When eIBRS is enabled user/kernel isolation is not impacted. Indirect Branch Prediction Barrier (IBPB) ----------------------------------------- After an IBPB, indirect branches may be predicted with targets corresponding to direct branches which were executed prior to IBPB. This is mitigated by a microcode update. Add cmdline parameter indirect_target_selection=off|on|force to control the mitigation to relocate the affected branches to an ITS-safe thunk i.e. located in the upper half of cacheline. Also add the sysfs reporting. When retpoline mitigation is deployed, ITS safe-thunks are not needed, because retpoline sequence is already ITS-safe. Similarly, when call depth tracking (CDT) mitigation is deployed (retbleed=stuff), ITS safe return thunk is not used, as CDT prevents RSB-underflow. To not overcomplicate things, ITS mitigation is not supported with spectre-v2 lfence;jmp mitigation. Moreover, it is less practical to deploy lfence;jmp mitigation on ITS affected parts anyways. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> |
||
|
Pawan Gupta
|
1ac116ce64 |
Documentation: x86/bugs/its: Add ITS documentation
Add the admin-guide for Indirect Target Selection (ITS). Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> |
||
|
Zihuan Zhang
|
50c9bb30dc |
PM: hibernate: add configurable delay for pm_test
Turn the default 5 second test delay for hibernation into a configurable module parameter, so users can determine how long to wait in this pseudo-hibernate state before resuming the system. The configurable delay parameter has been added for suspend, so add an analogous one for hibernation. Example (wait 30 seconds); # echo 30 > /sys/module/hibernate/parameters/pm_test_delay # echo core > /sys/power/pm_test Signed-off-by: Zihuan Zhang <zhangzihuan@kylinos.cn> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20250507063520.419635-1-zhangzihuan@kylinos.cn [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Keke Li
|
f8953ee959 |
Documentation: media: Add documentation file c3-isp.rst
Add the file 'c3-isp.rst' that documents the c3-isp driver. Signed-off-by: Keke Li <keke.li@amlogic.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> |
||
|
Darrick J. Wong
|
4528b90527 |
xfs: allow sysadmins to specify a maximum atomic write limit at mount time
Introduce a mount option to allow sysadmins to specify the maximum size of an atomic write. If the filesystem can work with the supplied value, that becomes the new guaranteed maximum. The value mustn't be too big for the existing filesystem geometry (max write size, max AG/rtgroup size). We dynamically recompute the tr_atomic_write transaction reservation based on the given block size, check that the current log size isn't less than the new minimum log size constraints, and set a new maximum. The actual software atomic write max is still computed based off of tr_atomic_ioend the same way it has for the past few commits. Note also that xfs_calc_atomic_write_log_geometry is non-static because mkfs will need that. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: John Garry <john.g.garry@oracle.com> Reviewed-by: John Garry <john.g.garry@oracle.com> |
||
|
Bagas Sanjaya
|
4804f5ad5d |
x86/cpu: Add "Old Microcode" docs to hw-vuln toctree
Sphinx reports missing toctree entry warning:
Documentation/admin-guide/hw-vuln/old_microcode.rst: WARNING: document isn't included in any toctree
Add entry for "Old Microcode" docs to fix the warning.
Fixes:
|
||
|
Damien Le Moal
|
9e4f11c122 |
Documentation: Document the new zoned loop block device driver
Introduce the zoned_loop.rst documentation file under admin-guide/blockdev to document the zoned loop block device driver. An overview of the driver is provided and its usage to create and delete zoned devices described. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20250407075222.170336-3-dlemoal@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jakub Kicinski
|
337079d31f |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc5). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Arnd Bergmann
|
118c40b7b5 |
kbuild: require gcc-8 and binutils-2.30
Commit
|
||
|
Joel Savitz
|
c0fe189b59 |
docs: namespace: Tweak and reword resource control doc
Fix the document title and reword the phrasing to active voice. Signed-off-by: Joel Savitz <jsavitz@redhat.com> Message-ID: <20250421161723.1138903-1-jsavitz@redhat.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
||
|
Martin Tůma
|
1a27fce0fa |
docs: media: mgb4: Improve mgb4 driver documentation
Add some basic info about the HW/driver + contact info. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> |
||
|
Lukas Bulwahn
|
29d69273fe |
media: remove STA2x11 media pci driver
With commit
|
||
|
Alan Borzeszkowski
|
36f6f7e2d4 |
Documentation/admin-guide: Document Thunderbolt/USB4 tunneling events
Add documentation about the Thunderbolt/USB4 tunneling events to the user’s and administrator’s guide. Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> |
||
|
Hans Holmberg
|
f0447f80ae |
xfs: remove duplicate Zoned Filesystems sections in admin-guide
Remove the duplicated section and while at it, turn spaces into tabs.
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Fixes:
|
||
|
Dave Hansen
|
4e2c719782 |
x86/cpu: Help users notice when running old Intel microcode
Old microcode is bad for users and for kernel developers.
For users, it exposes them to known fixed security and/or functional
issues. These obviously rarely result in instant dumpster fires in
every environment. But it is as important to keep your microcode up
to date as it is to keep your kernel up to date.
Old microcode also makes kernels harder to debug. A developer looking
at an oops need to consider kernel bugs, known CPU issues and unknown
CPU issues as possible causes. If they know the microcode is up to
date, they can mostly eliminate known CPU issues as the cause.
Make it easier to tell if CPU microcode is out of date. Add a list
of released microcode. If the loaded microcode is older than the
release, tell users in a place that folks can find it:
/sys/devices/system/cpu/vulnerabilities/old_microcode
Tell kernel kernel developers about it with the existing taint
flag:
TAINT_CPU_OUT_OF_SPEC
== Discussion ==
When a user reports a potential kernel issue, it is very common
to ask them to reproduce the issue on mainline. Running mainline,
they will (independently from the distro) acquire a more up-to-date
microcode version list. If their microcode is old, they will
get a warning about the taint and kernel developers can take that
into consideration when debugging.
Just like any other entry in "vulnerabilities/", users are free to
make their own assessment of their exposure.
== Microcode Revision Discussion ==
The microcode versions in the table were generated from the Intel
microcode git repo:
8ac9378a8487 ("microcode-20241112 Release")
which as of this writing lags behind the latest microcode-20250211.
It can be argued that the versions that the kernel picks to call "old"
should be a revision or two old. Which specific version is picked is
less important to me than picking *a* version and enforcing it.
This repository contains only microcode versions that Intel has deemed
to be OS-loadable. It is quite possible that the BIOS has loaded a
newer microcode than the latest in this repo. If this happens, the
system is considered to have new microcode, not old.
Specifically, the sysfs file and taint flag answer the question:
Is the CPU running on the latest OS-loadable microcode,
or something even later that the BIOS loaded?
In other words, Intel never publishes an authoritative list of CPUs
and latest microcode revisions. Until it does, this is the best that
Linux can do.
Also note that the "intel-ucode-defs.h" file is simple, ugly and
has lots of magic numbers. That's on purpose and should allow a
single file to be shared across lots of stable kernel regardless of if
they have the new "VFM" infrastructure or not. It was generated with
a dumb script.
== FAQ ==
Q: Does this tell me if my system is secure or insecure?
A: No. It only tells you if your microcode was old when the
system booted.
Q: Should the kernel warn if the microcode list itself is too old?
A: No. New kernels will get new microcode lists, both mainline
and stable. The only way to have an old list is to be running
an old kernel in which case you have bigger problems.
Q: Is this for security or functional issues?
A: Both.
Q: If a given microcode update only has functional problems but
no security issues, will it be considered old?
A: Yes. All microcode image versions within a microcode release
are treated identically. Intel appears to make security
updates without disclosing them in the release notes. Thus,
all updates are considered to be security-relevant.
Q: Who runs old microcode?
A: Anybody with an old distro. This happens all the time inside
of Intel where there are lots of weird systems in labs that
might not be getting regular distro updates and might also
be running rather exotic microcode images.
Q: If I update my microcode after booting will it stop saying
"Vulnerable"?
A: No. Just like all the other vulnerabilies, you need to
reboot before the kernel will reassess your vulnerability.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "Ahmed S. Darwish" <darwi@linutronix.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/all/20250421195659.CF426C07%40davehans-spike.ostc.intel.com
(cherry picked from commit 9127865b15eb0a1bd05ad7efe29489c44394bdc1)
|
||
|
Jakub Kicinski
|
240ce924d2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc3). No conflicts. Adjacent changes: tools/net/ynl/pyynl/ynl_gen_c.py |
||
|
Hans Holmberg
|
c7b67ddc3c |
xfs: document zoned rt specifics in admin-guide
Document the lifetime, nolifetime and max_open_zones mount options
added for zoned rt file systems.
Also add documentation describing the max_open_zones sysfs attribute
exposed in /sys/fs/xfs/<dev>/zoned/
Fixes:
|
||
|
Artem Bityutskiy
|
af3a1b6a18 |
Documentation: admin-guide: pm: Document intel_idle C1 demotion
Document the intel_idle driver sysfs file for enabling/disabling C1 demotion. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Link: https://patch.msgid.link/20250317135541.1471754-3-dedekind1@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Randy Dunlap
|
e54ac58667 |
cpufreq: editing corrections to cpufreq.rst
Change a few words and abbreviations/punctuation. Change one echo command to include a trailing '`'. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: linux-pm@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250405001447.4039463-1-rdunlap@infradead.org |
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|
James Addison
|
3fa3b20ba1 |
docs: Disambiguate a pair of rST labels
According to the reStructuredText documentation, internal hyperlink targets[1] are intended to resolve within the current document. Sphinx has a bug that causes internal hyperlinks declared with duplicate names to resolve nondeterministically, producing incorrect documentation. Sphinx does not yet emit a warning when these duplicate target names are declared. To improve the reproducibility and correctness of the HTML documentation, disambiguate two labels both previously titled "submit_improvements". [1] - https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#hyperlink-targets Link: https://github.com/sphinx-doc/sphinx/issues/13383 Signed-off-by: James Addison <jay@jp-hosting.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250407195120.331103-2-jvanderwaa@redhat.com |
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|
Hans Holmberg
|
845abeb1f0 |
xfs: add tunable threshold parameter for triggering zone GC
Presently we start garbage collection late - when we start running out of free zones to backfill max_open_zones. This is a reasonable default as it minimizes write amplification. The longer we wait, the more blocks are invalidated and reclaim cost less in terms of blocks to relocate. Starting this late however introduces a risk of GC being outcompeted by user writes. If GC can't keep up, user writes will be forced to wait for free zones with high tail latencies as a result. This is not a problem under normal circumstances, but if fragmentation is bad and user write pressure is high (multiple full-throttle writers) we will "bottom out" of free zones. To mitigate this, introduce a zonegc_low_space tunable that lets the user specify a percentage of how much of the unused space that GC should keep available for writing. A high value will reclaim more of the space occupied by unused blocks, creating a larger buffer against write bursts. This comes at a cost as write amplification is increased. To illustrate this using a sample workload, setting zonegc_low_space to 60% avoids high (500ms) max latencies while increasing write amplification by 15%. Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Carlos Maiolino <cem@kernel.org> |
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|
Kuniyuki Iwashima
|
2a63dd0edf |
net: Retire DCCP socket.
DCCP was orphaned in 2021 by commit |
||
|
Kurt Borja
|
3e48767ab5
|
Documentation: admin-guide: laptops: Add documentation for alienware-wmi
Add driver admin-guide documentation for the alienware-wmi driver. Reviewed-by: Armin Wolf <W_Armin@gmx.de> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Link: https://lore.kernel.org/r/20250329-hwm-v7-11-a14ea39d8a94@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
||
|
Koichiro Den
|
10f94d092b |
Documentation: gpio: document configfs interface for gpio-aggregator
Add documentation for the newly added configfs-based interface for GPIO aggregator. Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-9-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Josh Poimboeuf
|
83f6665a49 |
x86/bugs: Add RSB mitigation document
Create a document to summarize hard-earned knowledge about RSB-related mitigations, with references, and replace the overly verbose yet incomplete comments with a reference to the document. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/ab73f4659ba697a974759f07befd41ae605e33dd.1744148254.git.jpoimboe@kernel.org |
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|
Andy Shevchenko
|
996457176b |
x86/early_printk: Use 'mmio32' for consistency, fix comments
First of all, using 'mmio' prevents proper implementation of 8-bit accessors.
Second, it's simply inconsistent with uart8250 set of options. Rename it to
'mmio32'. While at it, remove rather misleading comment in the documentation.
From now on mmio32 is self-explanatory and pciserial supports not only 32-bit
MMIO accessors.
Also, while at it, fix the comment for the "pciserial" case. The comment
seems to be a copy'n'paste error when mentioning "serial" instead of
"pciserial" (with double quotes). Fix this.
With that, move it upper, so we don't calculate 'buf' twice.
Fixes:
|
||
|
Michal Koutný
|
e34e0131fe |
sched: Add commadline option for RT_GROUP_SCHED toggling
Only simple implementation with a static key wrapper, it will be wired in later. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20250310170442.504716-5-mkoutny@suse.com |
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|
Matthew Wilcox (Oracle)
|
6b0dfabb35
|
fs: Remove aops->writepage
All callers and implementations are now removed, so remove the operation and update the documentation to match. Signed-off-by: "Matthew Wilcox (Oracle)" <willy@infradead.org> Link: https://lore.kernel.org/r/20250402150005.2309458-10-willy@infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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|
Linus Torvalds
|
dd9db3bff8 |
more s390 updates for 6.15 merge window
- Fix machine check handler _CIF_MCCK_GUEST bit setting by adding the missing base register for relocated lowcore address - Fix build failure on older linkers by conditionally adding the -no-pie linker option only when it is supported - Fix inaccurate kernel messages in vfio-ap by providing descriptive error notifications for AP queue sharing violations - Fix PCI isolation logic by ensuring non-VF devices correctly return false in zpci_bus_is_isolated_vf() - Fix PCI DMA range map setup by using dma_direct_set_offset() to add a proper sentinel element, preventing potential overruns and translation errors - Cleanup header dependency problems with asm-offsets.c - Add fault info for unexpected low-address protection faults in user mode - Add support for HOTPLUG_SMT, replacing the arch-specific "nosmt" handling with common code handling - Use bitop functions to implement CPU flag helper functions to ensure that bits cannot get lost if modified in different contexts on a CPU - Remove unused machine_flags for the lowcore -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmfwbhwACgkQjYWKoQLX FBgmlwf5ASFl51yYziSg47NTOdCgkdE1un69VKCU7g9nzQBCFiK4PT+H/d69JHpt g9dHi4sW6aXooUWyqtrQbsDZSnGKvJd48wOkpqAKKKJCBx3On/7s1fi1sJXgJovo rSwC1cRD+yfFDNoQgXytSrRAkoPYvIPxf0aQei/8ziVNOrl7iF7nyPYpgNcZl2iz rQWt+o4oWhygs6lK4w9t+0V0QLL+CqTIN/tpf7qeQzNFN5WfRJBn0dtxQhK72enG WepU41LnZxDF5DTKhH4+PZFdLPP+YwwTGdqojW28leGy5T3/Eg0wrDaU1034Wpgd m5Fg03z94Vdul/rAEscaH1PLT3Ufng== =G5/g -----END PGP SIGNATURE----- Merge tag 's390-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Vasily Gorbik: - Fix machine check handler _CIF_MCCK_GUEST bit setting by adding the missing base register for relocated lowcore address - Fix build failure on older linkers by conditionally adding the -no-pie linker option only when it is supported - Fix inaccurate kernel messages in vfio-ap by providing descriptive error notifications for AP queue sharing violations - Fix PCI isolation logic by ensuring non-VF devices correctly return false in zpci_bus_is_isolated_vf() - Fix PCI DMA range map setup by using dma_direct_set_offset() to add a proper sentinel element, preventing potential overruns and translation errors - Cleanup header dependency problems with asm-offsets.c - Add fault info for unexpected low-address protection faults in user mode - Add support for HOTPLUG_SMT, replacing the arch-specific "nosmt" handling with common code handling - Use bitop functions to implement CPU flag helper functions to ensure that bits cannot get lost if modified in different contexts on a CPU - Remove unused machine_flags for the lowcore * tag 's390-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/vfio-ap: Fix no AP queue sharing allowed message written to kernel log s390/pci: Fix dev.dma_range_map missing sentinel element s390/mm: Dump fault info in case of low address protection fault s390/smp: Add support for HOTPLUG_SMT s390: Fix linker error when -no-pie option is unavailable s390/processor: Use bitop functions for cpu flag helper functions s390/asm-offsets: Remove ASM_OFFSETS_C s390/asm-offsets: Include ftrace_regs.h instead of ftrace.h s390/kvm: Split kvm_host header file s390/pci: Fix zpci_bus_is_isolated_vf() for non-VFs s390/lowcore: Remove unused machine_flags s390/entry: Fix setting _CIF_MCCK_GUEST with lowcore relocation |
||
|
Linus Torvalds
|
4a1d8ababd |
RISC-V Patches for the 6.15 Merge Window, Part 1
* The sub-architecture selection Kconfig system has been cleaned up,
the documentation has been improved, and various detections have been
fixed.
* The vector-related extensions dependencies are now validated when
parsing from device tree and in the DT bindings.
* Misaligned access probing can be overridden via a kernel command-line
parameter, along with various fixes to misalign access handling.
* Support for relocatable !MMU kernels builds.
* Support for hpge pfnmaps, which should improve TLB utilization.
* Support for runtime constants, which improves the d_hash()
performance.
* Support for bfloat16, Zicbom, Zaamo, Zalrsc, Zicntr, Zihpm.
* Various fixes, including:
- We were missing a secondary mmu notifier call when flushing the
tlb which is required for IOMMU.
- Fix ftrace panics by saving the registers as expected by ftrace.
- Fix a couple of stimecmp usage related to cpu hotplug.
- purgatory_start is now aligned as per the STVEC requirements.
- A fix for hugetlb when calculating the size of non-present PTEs.
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Merge tag 'riscv-for-linus-6.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- The sub-architecture selection Kconfig system has been cleaned up,
the documentation has been improved, and various detections have been
fixed
- The vector-related extensions dependencies are now validated when
parsing from device tree and in the DT bindings
- Misaligned access probing can be overridden via a kernel command-line
parameter, along with various fixes to misalign access handling
- Support for relocatable !MMU kernels builds
- Support for hpge pfnmaps, which should improve TLB utilization
- Support for runtime constants, which improves the d_hash()
performance
- Support for bfloat16, Zicbom, Zaamo, Zalrsc, Zicntr, Zihpm
- Various fixes, including:
- We were missing a secondary mmu notifier call when flushing the
tlb which is required for IOMMU
- Fix ftrace panics by saving the registers as expected by ftrace
- Fix a couple of stimecmp usage related to cpu hotplug
- purgatory_start is now aligned as per the STVEC requirements
- A fix for hugetlb when calculating the size of non-present PTEs
* tag 'riscv-for-linus-6.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (65 commits)
riscv: Add norvc after .option arch in runtime const
riscv: Make sure toolchain supports zba before using zba instructions
riscv/purgatory: 4B align purgatory_start
riscv/kexec_file: Handle R_RISCV_64 in purgatory relocator
selftests: riscv: fix v_exec_initval_nolibc.c
riscv: Fix hugetlb retrieval of number of ptes in case of !present pte
riscv: print hartid on bringup
riscv: Add norvc after .option arch in runtime const
riscv: Remove CONFIG_PAGE_OFFSET
riscv: Support CONFIG_RELOCATABLE on riscv32
asm-generic: Always define Elf_Rel and Elf_Rela
riscv: Support CONFIG_RELOCATABLE on NOMMU
riscv: Allow NOMMU kernels to access all of RAM
riscv: Remove duplicate CONFIG_PAGE_OFFSET definition
RISC-V: errata: Use medany for relocatable builds
dt-bindings: riscv: document vector crypto requirements
dt-bindings: riscv: add vector sub-extension dependencies
dt-bindings: riscv: d requires f
RISC-V: add f & d extension validation checks
RISC-V: add vector crypto extension validation checks
...
|
||
|
Linus Torvalds
|
6cb0bd94c0 |
Persistent buffer cleanups and simplifications for v6.15:
It was mistaken that the physical memory returned from "reserve_mem" had to
be vmap()'d to get to it from a virtual address. But reserve_mem already
maps the memory to the virtual address of the kernel so a simple
phys_to_virt() can be used to get to the virtual address from the physical
memory returned by "reserve_mem". With this new found knowledge, the
code can be cleaned up and simplified.
- Enforce that the persistent memory is page aligned
As the buffers using the persistent memory are all going to be
mapped via pages, make sure that the memory given to the tracing
infrastructure is page aligned. If it is not, it will print a warning
and fail to map the buffer.
- Use phys_to_virt() to get the virtual address from reserve_mem
Instead of calling vmap() on the physical memory returned from
"reserve_mem", use phys_to_virt() instead.
As the memory returned by "memmap" or any other means where a physical
address is given to the tracing infrastructure, it still needs to
be vmap(). Since this memory can never be returned back to the buddy
allocator nor should it ever be memmory mapped to user space, flag
this buffer and up the ref count. The ref count will keep it from
ever being freed, and the flag will prevent it from ever being memory
mapped to user space.
- Use vmap_page_range() for memmap virtual address mapping
For the memmap buffer, instead of allocating an array of struct pages,
assigning them to the contiguous phsycial memory and then passing that to
vmap(), use vmap_page_range() instead
- Replace flush_dcache_folio() with flush_kernel_vmap_range()
Instead of calling virt_to_folio() and passing that to
flush_dcache_folio(), just call flush_kernel_vmap_range() directly.
This also fixes a bug where if a subbuffer was bigger than PAGE_SIZE
only the PAGE_SIZE portion would be flushed.
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Merge tag 'trace-ringbuffer-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull ring-buffer updates from Steven Rostedt:
"Persistent buffer cleanups and simplifications.
It was mistaken that the physical memory returned from "reserve_mem"
had to be vmap()'d to get to it from a virtual address. But
reserve_mem already maps the memory to the virtual address of the
kernel so a simple phys_to_virt() can be used to get to the virtual
address from the physical memory returned by "reserve_mem". With this
new found knowledge, the code can be cleaned up and simplified.
- Enforce that the persistent memory is page aligned
As the buffers using the persistent memory are all going to be
mapped via pages, make sure that the memory given to the tracing
infrastructure is page aligned. If it is not, it will print a
warning and fail to map the buffer.
- Use phys_to_virt() to get the virtual address from reserve_mem
Instead of calling vmap() on the physical memory returned from
"reserve_mem", use phys_to_virt() instead.
As the memory returned by "memmap" or any other means where a
physical address is given to the tracing infrastructure, it still
needs to be vmap(). Since this memory can never be returned back to
the buddy allocator nor should it ever be memmory mapped to user
space, flag this buffer and up the ref count. The ref count will
keep it from ever being freed, and the flag will prevent it from
ever being memory mapped to user space.
- Use vmap_page_range() for memmap virtual address mapping
For the memmap buffer, instead of allocating an array of struct
pages, assigning them to the contiguous phsycial memory and then
passing that to vmap(), use vmap_page_range() instead
- Replace flush_dcache_folio() with flush_kernel_vmap_range()
Instead of calling virt_to_folio() and passing that to
flush_dcache_folio(), just call flush_kernel_vmap_range() directly.
This also fixes a bug where if a subbuffer was bigger than
PAGE_SIZE only the PAGE_SIZE portion would be flushed"
* tag 'trace-ringbuffer-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Use flush_kernel_vmap_range() over flush_dcache_folio()
tracing: Use vmap_page_range() to map memmap ring buffer
tracing: Have reserve_mem use phys_to_virt() and separate from memmap buffer
tracing: Enforce the persistent ring buffer to be page aligned
|
||
|
Linus Torvalds
|
5014bebee0 |
- dm-crypt: switch to using the crc32 library
- dm-verity, dm-integrity, dm-crypt: documentation improvement - dm-vdo fixes - dm-stripe: enable inline crypto passthrough - dm-integrity: set ti->error on memory allocation failure - dm-bufio: remove unused return value - dm-verity: do forward error correction on metadata I/O errors - dm: fix unconditional IO throttle caused by REQ_PREFLUSH - dm cache: prevent BUG_ON by blocking retries on failed device resumes - dm cache: support shrinking the origin device - dm: restrict dm device size to 2^63-512 bytes - dm-delay: support zoned devices - dm-verity: support block number limits for different ioprio classes - dm-integrity: fix non-constant-time tag verification (security bug) - dm-verity, dm-ebs: fix prefetch-vs-suspend race -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRnH8MwLyZDhyYfesYTAyx9YGnhbQUCZ+u7shQcbXBhdG9ja2FA cmVkaGF0LmNvbQAKCRATAyx9YGnhbZ0JAQDVhbl77u9jjPWjxJvFodMAqw+KPXGC MNzkyzG0lu7oPAEA33vt5pHQtr7F3SJj/sDBuZ+rb5bvUtgxeGqpJOQpTAk= =tj00 -----END PGP SIGNATURE----- Merge tag 'for-6.15/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mikulas Patocka: - dm-crypt: switch to using the crc32 library - dm-verity, dm-integrity, dm-crypt: documentation improvement - dm-vdo fixes - dm-stripe: enable inline crypto passthrough - dm-integrity: set ti->error on memory allocation failure - dm-bufio: remove unused return value - dm-verity: do forward error correction on metadata I/O errors - dm: fix unconditional IO throttle caused by REQ_PREFLUSH - dm cache: prevent BUG_ON by blocking retries on failed device resumes - dm cache: support shrinking the origin device - dm: restrict dm device size to 2^63-512 bytes - dm-delay: support zoned devices - dm-verity: support block number limits for different ioprio classes - dm-integrity: fix non-constant-time tag verification (security bug) - dm-verity, dm-ebs: fix prefetch-vs-suspend race * tag 'for-6.15/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (27 commits) dm-ebs: fix prefetch-vs-suspend race dm-verity: fix prefetch-vs-suspend race dm-integrity: fix non-constant-time tag verification dm-verity: support block number limits for different ioprio classes dm-delay: support zoned devices dm: restrict dm device size to 2^63-512 bytes dm cache: support shrinking the origin device dm cache: prevent BUG_ON by blocking retries on failed device resumes dm vdo indexer: reorder uds_request to reduce padding dm: fix unconditional IO throttle caused by REQ_PREFLUSH dm vdo: rework processing of loaded refcount byte arrays dm vdo: remove remaining ring references dm-verity: do forward error correction on metadata I/O errors dm-bufio: remove unused return value dm-integrity: set ti->error on memory allocation failure dm: Enable inline crypto passthrough for striped target dm vdo slab-depot: read refcount blocks in large chunks at load time dm vdo vio-pool: allow variable-sized metadata vios dm vdo vio-pool: support pools with multiple data blocks per vio dm vdo vio-pool: add a pool pointer to pooled_vio ... |
||
|
Linus Torvalds
|
5e17b5c717 |
fuse update for 6.15
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Merge tag 'fuse-update-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
- Allow connection to server to time out (Joanne Koong)
- If server doesn't support creating a hard link, return EPERM rather
than ENOSYS (Matt Johnston)
- Allow file names longer than 1024 chars (Bernd Schubert)
- Fix a possible race if request on io_uring queue is interrupted
(Bernd Schubert)
- Misc fixes and cleanups
* tag 'fuse-update-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: remove unneeded atomic set in uring creation
fuse: fix uring race condition for null dereference of fc
fuse: Increase FUSE_NAME_MAX to PATH_MAX
fuse: Allocate only namelen buf memory in fuse_notify_
fuse: add default_request_timeout and max_request_timeout sysctls
fuse: add kernel-enforced timeout option for requests
fuse: optmize missing FUSE_LINK support
fuse: Return EPERM rather than ENOSYS from link()
fuse: removed unused function fuse_uring_create() from header
fuse: {io-uring} Fix a possible req cancellation race
|
||
|
Steven Rostedt
|
c44a14f216 |
tracing: Enforce the persistent ring buffer to be page aligned
Enforce that the address and the size of the memory used by the persistent ring buffer is page aligned. Also update the documentation to reflect this requirement. Link: https://lore.kernel.org/all/CAHk-=whUOfVucfJRt7E0AH+GV41ELmS4wJqxHDnui6Giddfkzw@mail.gmail.com/ Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Mike Rapoport <rppt@kernel.org> Cc: Jann Horn <jannh@google.com> Link: https://lore.kernel.org/20250402144953.412882844@goodmis.org Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
d6b02199cd |
- The 7 patch series "powerpc/crash: use generic crashkernel
reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The 2 patch series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The 4 patch series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The 12 patch series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The 16 patch series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The 7 patch series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The 2 patch series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The 4 patch series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nuqwAKCRDdBJ7gKXxA jtNqAQDxqJpjWkzn4yN9CNSs1ivVx3fr6SqazlYCrt3u89WQvwEA1oRrGpETzUGq r6khQUIcQImPPcjFqEFpuiSOU0MBZA0= =Kii8 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - The series "powerpc/crash: use generic crashkernel reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. * tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) mailmap: consolidate email addresses of Alexander Sverdlin fs/procfs: fix the comment above proc_pid_wchan() relay: use kasprintf() instead of fixed buffer formatting resource: replace open coded variant of DEFINE_RES() resource: replace open coded variants of DEFINE_RES_*_NAMED() resource: replace open coded variant of DEFINE_RES_NAMED_DESC() resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED() samples: add hung_task detector mutex blocking sample hung_task: show the blocker task if the task is hung on mutex kexec_core: accept unaccepted kexec segments' destination addresses watchdog/perf: optimize bytes copied and remove manual NUL-termination lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap() lib/interval_tree: skip the check before go to the right subtree lib/interval_tree: add test case for span iteration lib/interval_tree: add test case for interval_tree_iter_xxx() helpers lib/rbtree: add random seed lib/rbtree: split tests lib/rbtree: enable userland test suite for rbtree related data structure checkpatch: describe --min-conf-desc-length scripts/gdb/symbols: determine KASLR offset on s390 ... |
||
|
Linus Torvalds
|
eb0ece1602 |
- The 6 patch series "Enable strict percpu address space checks" from
Uros Bizjak uses x86 named address space qualifiers to provide compile-time checking of percpu area accesses. This has caused a small amount of fallout - two or three issues were reported. In all cases the calling code was founf to be incorrect. - The 4 patch series "Some cleanup for memcg" from Chen Ridong implements some relatively monir cleanups for the memcontrol code. - The 17 patch series "mm: fixes for device-exclusive entries (hmm)" from David Hildenbrand fixes a boatload of issues which David found then using device-exclusive PTE entries when THP is enabled. More work is needed, but this makes thins better - our own HMM selftests now succeed. - The 2 patch series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed remove the z3fold and zbud implementations. They have been deprecated for half a year and nobody has complained. - The 5 patch series "mm: further simplify VMA merge operation" from Lorenzo Stoakes implements numerous simplifications in this area. No runtime effects are anticipated. - The 4 patch series "mm/madvise: remove redundant mmap_lock operations from process_madvise()" from SeongJae Park rationalizes the locking in the madvise() implementation. Performance gains of 20-25% were observed in one MADV_DONTNEED microbenchmark. - The 12 patch series "Tiny cleanup and improvements about SWAP code" from Baoquan He contains a number of touchups to issues which Baoquan noticed when working on the swap code. - The 2 patch series "mm: kmemleak: Usability improvements" from Catalin Marinas implements a couple of improvements to the kmemleak user-visible output. - The 2 patch series "mm/damon/paddr: fix large folios access and schemes handling" from Usama Arif provides a couple of fixes for DAMON's handling of large folios. - The 3 patch series "mm/damon/core: fix wrong and/or useless damos_walk() behaviors" from SeongJae Park fixes a few issues with the accuracy of kdamond's walking of DAMON regions. - The 3 patch series "expose mapping wrprotect, fix fb_defio use" from Lorenzo Stoakes changes the interaction between framebuffer deferred-io and core MM. No functional changes are anticipated - this is preparatory work for the future removal of page structure fields. - The 4 patch series "mm/damon: add support for hugepage_size DAMOS filter" from Usama Arif adds a DAMOS filter which permits the filtering by huge page sizes. - The 4 patch series "mm: permit guard regions for file-backed/shmem mappings" from Lorenzo Stoakes extends the guard region feature from its present "anon mappings only" state. The feature now covers shmem and file-backed mappings. - The 4 patch series "mm: batched unmap lazyfree large folios during reclamation" from Barry Song cleans up and speeds up the unmapping for pte-mapped large folios. - The 18 patch series "reimplement per-vma lock as a refcount" from Suren Baghdasaryan puts the vm_lock back into the vma. Our reasons for pulling it out were largely bogus and that change made the code more messy. This patchset provides small (0-10%) improvements on one microbenchmark. - The 5 patch series "Docs/mm/damon: misc DAMOS filters documentation fixes and improves" from SeongJae Park does some maintenance work on the DAMON docs. - The 27 patch series "hugetlb/CMA improvements for large systems" from Frank van der Linden addresses a pile of issues which have been observed when using CMA on large machines. - The 2 patch series "mm/damon: introduce DAMOS filter type for unmapped pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the page's mapped/unmapped status. - The 19 patch series "zsmalloc/zram: there be preemption" from Sergey Senozhatsky teaches zram to run its compression and decompression operations preemptibly. - The 12 patch series "selftests/mm: Some cleanups from trying to run them" from Brendan Jackman fixes a pile of unrelated issues which Brendan encountered while runnimg our selftests. - The 2 patch series "fs/proc/task_mmu: add guard region bit to pagemap" from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to determine whether a particular page is a guard page. - The 7 patch series "mm, swap: remove swap slot cache" from Kairui Song removes the swap slot cache from the allocation path - it simply wasn't being effective. - The 5 patch series "mm: cleanups for device-exclusive entries (hmm)" from David Hildenbrand implements a number of unrelated cleanups in this code. - The 5 patch series "mm: Rework generic PTDUMP configs" from Anshuman Khandual implements a number of preparatoty cleanups to the GENERIC_PTDUMP Kconfig logic. - The 8 patch series "mm/damon: auto-tune aggregation interval" from SeongJae Park implements a feedback-driven automatic tuning feature for DAMON's aggregation interval tuning. - The 5 patch series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in powerpc, sparc and x86 lazy MMU implementations. Ryan did this in preparation for implementing lazy mmu mode for arm64 to optimize vmalloc. - The 2 patch series "mm/page_alloc: Some clarifications for migratetype fallback" from Brendan Jackman reworks some commentary to make the code easier to follow. - The 3 patch series "page_counter cleanup and size reduction" from Shakeel Butt cleans up the page_counter code and fixes a size increase which we accidentally added late last year. - The 3 patch series "Add a command line option that enables control of how many threads should be used to allocate huge pages" from Thomas Prescher does that. It allows the careful operator to significantly reduce boot time by tuning the parallalization of huge page initialization. - The 3 patch series "Fix calculations in trace_balance_dirty_pages() for cgwb" from Tang Yizhou fixes the tracing output from the dirty page balancing code. - The 9 patch series "mm/damon: make allow filters after reject filters useful and intuitive" from SeongJae Park improves the handling of allow and reject filters. Behaviour is made more consistent and the documention is updated accordingly. - The 5 patch series "Switch zswap to object read/write APIs" from Yosry Ahmed updates zswap to the new object read/write APIs and thus permits the removal of some legacy code from zpool and zsmalloc. - The 6 patch series "Some trivial cleanups for shmem" from Baolin Wang does as it claims. - The 20 patch series "fs/dax: Fix ZONE_DEVICE page reference counts" from Alistair Popple regularizes the weird ZONE_DEVICE page refcount handling in DAX, permittig the removal of a number of special-case checks. - The 4 patch series "refactor mremap and fix bug" from Lorenzo Stoakes is a preparatoty refactoring and cleanup of the mremap() code. - The 20 patch series "mm: MM owner tracking for large folios (!hugetlb) + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in which we determine whether a large folio is known to be mapped exclusively into a single MM. - The 8 patch series "mm/damon: add sysfs dirs for managing DAMOS filters based on handling layers" from SeongJae Park adds a couple of new sysfs directories to ease the management of DAMON/DAMOS filters. - The 13 patch series "arch, mm: reduce code duplication in mem_init()" from Mike Rapoport consolidates many per-arch implementations of mem_init() into code generic code, where that is practical. - The 13 patch series "mm/damon/sysfs: commit parameters online via damon_call()" from SeongJae Park continues the cleaning up of sysfs access to DAMON internal data. - The 3 patch series "mm: page_ext: Introduce new iteration API" from Luiz Capitulino reworks the page_ext initialization to fix a boot-time crash which was observed with an unusual combination of compile and cmdline options. - The 8 patch series "Buddy allocator like (or non-uniform) folio split" from Zi Yan reworks the code to split a folio into smaller folios. The main benefit is lessened memory consumption: fewer post-split folios are generated. - The 2 patch series "Minimize xa_node allocation during xarry split" from Zi Yan reduces the number of xarray xa_nodes which are generated during an xarray split. - The 2 patch series "drivers/base/memory: Two cleanups" from Gavin Shan performs some maintenance work on the drivers/base/memory code. - The 3 patch series "Add tracepoints for lowmem reserves, watermarks and totalreserve_pages" from Martin Liu adds some more tracepoints to the page allocator code. - The 4 patch series "mm/madvise: cleanup requests validations and classifications" from SeongJae Park cleans up some warts which SeongJae observed during his earlier madvise work. - The 3 patch series "mm/hwpoison: Fix regressions in memory failure handling" from Shuai Xue addresses two quite serious regressions which Shuai has observed in the memory-failure implementation. - The 5 patch series "mm: reliable huge page allocator" from Johannes Weiner makes huge page allocations cheaper and more reliable by reducing fragmentation. - The 5 patch series "Minor memcg cleanups & prep for memdescs" from Matthew Wilcox is preparatory work for the future implementation of memdescs. - The 4 patch series "track memory used by balloon drivers" from Nico Pache introduces a way to track memory used by our various balloon drivers. - The 2 patch series "mm/damon: introduce DAMOS filter type for active pages" from Nhat Pham permits users to filter for active/inactive pages, separately for file and anon pages. - The 2 patch series "Adding Proactive Memory Reclaim Statistics" from Hao Jia separates the proactive reclaim statistics from the direct reclaim statistics. - The 2 patch series "mm/vmscan: don't try to reclaim hwpoison folio" from Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim code. -----BEGIN PGP SIGNATURE----- iHQEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nZaAAKCRDdBJ7gKXxA jsOWAPiP4r7CJHMZRK4eyJOkvS1a1r+TsIarrFZtjwvf/GIfAQCEG+JDxVfUaUSF Ee93qSSLR1BkNdDw+931Pu0mXfbnBw== =Pn2K -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - The series "Enable strict percpu address space checks" from Uros Bizjak uses x86 named address space qualifiers to provide compile-time checking of percpu area accesses. This has caused a small amount of fallout - two or three issues were reported. In all cases the calling code was found to be incorrect. - The series "Some cleanup for memcg" from Chen Ridong implements some relatively monir cleanups for the memcontrol code. - The series "mm: fixes for device-exclusive entries (hmm)" from David Hildenbrand fixes a boatload of issues which David found then using device-exclusive PTE entries when THP is enabled. More work is needed, but this makes thins better - our own HMM selftests now succeed. - The series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed remove the z3fold and zbud implementations. They have been deprecated for half a year and nobody has complained. - The series "mm: further simplify VMA merge operation" from Lorenzo Stoakes implements numerous simplifications in this area. No runtime effects are anticipated. - The series "mm/madvise: remove redundant mmap_lock operations from process_madvise()" from SeongJae Park rationalizes the locking in the madvise() implementation. Performance gains of 20-25% were observed in one MADV_DONTNEED microbenchmark. - The series "Tiny cleanup and improvements about SWAP code" from Baoquan He contains a number of touchups to issues which Baoquan noticed when working on the swap code. - The series "mm: kmemleak: Usability improvements" from Catalin Marinas implements a couple of improvements to the kmemleak user-visible output. - The series "mm/damon/paddr: fix large folios access and schemes handling" from Usama Arif provides a couple of fixes for DAMON's handling of large folios. - The series "mm/damon/core: fix wrong and/or useless damos_walk() behaviors" from SeongJae Park fixes a few issues with the accuracy of kdamond's walking of DAMON regions. - The series "expose mapping wrprotect, fix fb_defio use" from Lorenzo Stoakes changes the interaction between framebuffer deferred-io and core MM. No functional changes are anticipated - this is preparatory work for the future removal of page structure fields. - The series "mm/damon: add support for hugepage_size DAMOS filter" from Usama Arif adds a DAMOS filter which permits the filtering by huge page sizes. - The series "mm: permit guard regions for file-backed/shmem mappings" from Lorenzo Stoakes extends the guard region feature from its present "anon mappings only" state. The feature now covers shmem and file-backed mappings. - The series "mm: batched unmap lazyfree large folios during reclamation" from Barry Song cleans up and speeds up the unmapping for pte-mapped large folios. - The series "reimplement per-vma lock as a refcount" from Suren Baghdasaryan puts the vm_lock back into the vma. Our reasons for pulling it out were largely bogus and that change made the code more messy. This patchset provides small (0-10%) improvements on one microbenchmark. - The series "Docs/mm/damon: misc DAMOS filters documentation fixes and improves" from SeongJae Park does some maintenance work on the DAMON docs. - The series "hugetlb/CMA improvements for large systems" from Frank van der Linden addresses a pile of issues which have been observed when using CMA on large machines. - The series "mm/damon: introduce DAMOS filter type for unmapped pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the page's mapped/unmapped status. - The series "zsmalloc/zram: there be preemption" from Sergey Senozhatsky teaches zram to run its compression and decompression operations preemptibly. - The series "selftests/mm: Some cleanups from trying to run them" from Brendan Jackman fixes a pile of unrelated issues which Brendan encountered while runnimg our selftests. - The series "fs/proc/task_mmu: add guard region bit to pagemap" from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to determine whether a particular page is a guard page. - The series "mm, swap: remove swap slot cache" from Kairui Song removes the swap slot cache from the allocation path - it simply wasn't being effective. - The series "mm: cleanups for device-exclusive entries (hmm)" from David Hildenbrand implements a number of unrelated cleanups in this code. - The series "mm: Rework generic PTDUMP configs" from Anshuman Khandual implements a number of preparatoty cleanups to the GENERIC_PTDUMP Kconfig logic. - The series "mm/damon: auto-tune aggregation interval" from SeongJae Park implements a feedback-driven automatic tuning feature for DAMON's aggregation interval tuning. - The series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in powerpc, sparc and x86 lazy MMU implementations. Ryan did this in preparation for implementing lazy mmu mode for arm64 to optimize vmalloc. - The series "mm/page_alloc: Some clarifications for migratetype fallback" from Brendan Jackman reworks some commentary to make the code easier to follow. - The series "page_counter cleanup and size reduction" from Shakeel Butt cleans up the page_counter code and fixes a size increase which we accidentally added late last year. - The series "Add a command line option that enables control of how many threads should be used to allocate huge pages" from Thomas Prescher does that. It allows the careful operator to significantly reduce boot time by tuning the parallalization of huge page initialization. - The series "Fix calculations in trace_balance_dirty_pages() for cgwb" from Tang Yizhou fixes the tracing output from the dirty page balancing code. - The series "mm/damon: make allow filters after reject filters useful and intuitive" from SeongJae Park improves the handling of allow and reject filters. Behaviour is made more consistent and the documention is updated accordingly. - The series "Switch zswap to object read/write APIs" from Yosry Ahmed updates zswap to the new object read/write APIs and thus permits the removal of some legacy code from zpool and zsmalloc. - The series "Some trivial cleanups for shmem" from Baolin Wang does as it claims. - The series "fs/dax: Fix ZONE_DEVICE page reference counts" from Alistair Popple regularizes the weird ZONE_DEVICE page refcount handling in DAX, permittig the removal of a number of special-case checks. - The series "refactor mremap and fix bug" from Lorenzo Stoakes is a preparatoty refactoring and cleanup of the mremap() code. - The series "mm: MM owner tracking for large folios (!hugetlb) + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in which we determine whether a large folio is known to be mapped exclusively into a single MM. - The series "mm/damon: add sysfs dirs for managing DAMOS filters based on handling layers" from SeongJae Park adds a couple of new sysfs directories to ease the management of DAMON/DAMOS filters. - The series "arch, mm: reduce code duplication in mem_init()" from Mike Rapoport consolidates many per-arch implementations of mem_init() into code generic code, where that is practical. - The series "mm/damon/sysfs: commit parameters online via damon_call()" from SeongJae Park continues the cleaning up of sysfs access to DAMON internal data. - The series "mm: page_ext: Introduce new iteration API" from Luiz Capitulino reworks the page_ext initialization to fix a boot-time crash which was observed with an unusual combination of compile and cmdline options. - The series "Buddy allocator like (or non-uniform) folio split" from Zi Yan reworks the code to split a folio into smaller folios. The main benefit is lessened memory consumption: fewer post-split folios are generated. - The series "Minimize xa_node allocation during xarry split" from Zi Yan reduces the number of xarray xa_nodes which are generated during an xarray split. - The series "drivers/base/memory: Two cleanups" from Gavin Shan performs some maintenance work on the drivers/base/memory code. - The series "Add tracepoints for lowmem reserves, watermarks and totalreserve_pages" from Martin Liu adds some more tracepoints to the page allocator code. - The series "mm/madvise: cleanup requests validations and classifications" from SeongJae Park cleans up some warts which SeongJae observed during his earlier madvise work. - The series "mm/hwpoison: Fix regressions in memory failure handling" from Shuai Xue addresses two quite serious regressions which Shuai has observed in the memory-failure implementation. - The series "mm: reliable huge page allocator" from Johannes Weiner makes huge page allocations cheaper and more reliable by reducing fragmentation. - The series "Minor memcg cleanups & prep for memdescs" from Matthew Wilcox is preparatory work for the future implementation of memdescs. - The series "track memory used by balloon drivers" from Nico Pache introduces a way to track memory used by our various balloon drivers. - The series "mm/damon: introduce DAMOS filter type for active pages" from Nhat Pham permits users to filter for active/inactive pages, separately for file and anon pages. - The series "Adding Proactive Memory Reclaim Statistics" from Hao Jia separates the proactive reclaim statistics from the direct reclaim statistics. - The series "mm/vmscan: don't try to reclaim hwpoison folio" from Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim code. * tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (431 commits) mm/page_alloc: remove unnecessary __maybe_unused in order_to_pindex() x86/mm: restore early initialization of high_memory for 32-bits mm/vmscan: don't try to reclaim hwpoison folio mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper cgroup: docs: add pswpin and pswpout items in cgroup v2 doc mm: vmscan: split proactive reclaim statistics from direct reclaim statistics selftests/mm: speed up split_huge_page_test selftests/mm: uffd-unit-tests support for hugepages > 2M docs/mm/damon/design: document active DAMOS filter type mm/damon: implement a new DAMOS filter type for active pages fs/dax: don't disassociate zero page entries MM documentation: add "Unaccepted" meminfo entry selftests/mm: add commentary about 9pfs bugs fork: use __vmalloc_node() for stack allocation docs/mm: Physical Memory: Populate the "Zones" section xen: balloon: update the NR_BALLOON_PAGES state hv_balloon: update the NR_BALLOON_PAGES state balloon_compaction: update the NR_BALLOON_PAGES state meminfo: add a per node counter for balloon drivers mm: remove references to folio in __memcg_kmem_uncharge_page() ... |
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Joanne Koong
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9b17cb59a7 |
fuse: add default_request_timeout and max_request_timeout sysctls
Introduce two new sysctls, "default_request_timeout" and "max_request_timeout". These control how long (in seconds) a server can take to reply to a request. If the server does not reply by the timeout, then the connection will be aborted. The upper bound on these sysctl values is 65535. "default_request_timeout" sets the default timeout if no timeout is specified by the fuse server on mount. 0 (default) indicates no default timeout should be enforced. If the server did specify a timeout, then default_request_timeout will be ignored. "max_request_timeout" sets the max amount of time the server may take to reply to a request. 0 (default) indicates no maximum timeout. If max_request_timeout is set and the fuse server attempts to set a timeout greater than max_request_timeout, the system will use max_request_timeout as the timeout. Similarly, if default_request_timeout is greater than max_request_timeout, the system will use max_request_timeout as the timeout. If the server does not request a timeout and default_request_timeout is set to 0 but max_request_timeout is set, then the timeout will be max_request_timeout. Please note that these timeouts are not 100% precise. The request may take roughly an extra FUSE_TIMEOUT_TIMER_FREQ seconds beyond the set max timeout due to how it's internally implemented. $ sysctl -a | grep fuse.default_request_timeout fs.fuse.default_request_timeout = 0 $ echo 65536 | sudo tee /proc/sys/fs/fuse/default_request_timeout tee: /proc/sys/fs/fuse/default_request_timeout: Invalid argument $ echo 65535 | sudo tee /proc/sys/fs/fuse/default_request_timeout 65535 $ sysctl -a | grep fuse.default_request_timeout fs.fuse.default_request_timeout = 65535 $ echo 0 | sudo tee /proc/sys/fs/fuse/default_request_timeout 0 $ sysctl -a | grep fuse.default_request_timeout fs.fuse.default_request_timeout = 0 [Luis Henriques: Limit the timeout to the range [FUSE_TIMEOUT_TIMER_FREQ, fuse_max_req_timeout]] Signed-off-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Bernd Schubert <bschubert@ddn.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Luis Henriques <luis@igalia.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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Heiko Carstens
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1018424ace |
s390/smp: Add support for HOTPLUG_SMT
Add support for HOTPLUG_SMT. With this the s390 specific "nosmt" kernel command line parameter handling is replaced with common code handling. This means that just specifying "nosmt" still enables smt from an architectural point of view, however only the primary (base) cpu can be set online. Enabling smt during runtime via /sys/devices/system/cpu/smt/control allows to set secondary cpus online. This way "nosmt" works like on other architectures where enabling and disabling smt during runtime is possible. If "nosmt=force" is specified smt is also still enabled from an architectural point of view, but there is no way to set secondary cpus online during runtime, also like on other architectures. In order to disable smt from architectural point of view, which was previously achieved with the s390 specific "nosmt" command line option, "smt=1" can be used. Tested-by: Mete Durlu <meted@linux.ibm.com> Reviewed-by: Mete Durlu <meted@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Linus Torvalds
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7405c0f01a |
Miscellaneous x86 fixes and updates:
- Fix a large number of x86 Kconfig dependency and help text accuracy
bugs/problems, by Mateusz Jończyk and David Heideberg.
- Fix a VM_PAT interaction with fork() crash. This also touches
core kernel code.
- Fix an ORC unwinder bug for interrupt entries
- Fixes and cleanups.
- Fix an AMD microcode loader bug that can promote verification failures
into success.
- Add early-printk support for MMIO based UARTs on an x86 board that
had no other serial debugging facility and also experienced early
boot crashes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 fixes and updates from Ingo Molnar:
- Fix a large number of x86 Kconfig dependency and help text accuracy
bugs/problems, by Mateusz Jończyk and David Heideberg
- Fix a VM_PAT interaction with fork() crash. This also touches core
kernel code
- Fix an ORC unwinder bug for interrupt entries
- Fixes and cleanups
- Fix an AMD microcode loader bug that can promote verification
failures into success
- Add early-printk support for MMIO based UARTs on an x86 board that
had no other serial debugging facility and also experienced early
boot crashes
* tag 'x86-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Fix __apply_microcode_amd()'s return value
x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range()
x86/fpu: Update the outdated comment above fpstate_init_user()
x86/early_printk: Add support for MMIO-based UARTs
x86/dumpstack: Fix inaccurate unwinding from exception stacks due to misplaced assignment
x86/entry: Fix ORC unwinder for PUSH_REGS with save_ret=1
x86/Kconfig: Fix lists in X86_EXTENDED_PLATFORM help text
x86/Kconfig: Correct X86_X2APIC help text
x86/speculation: Remove the extra #ifdef around CALL_NOSPEC
x86/Kconfig: Document release year of glibc 2.3.3
x86/Kconfig: Make CONFIG_PCI_CNB20LE_QUIRK depend on X86_32
x86/Kconfig: Document CONFIG_PCI_MMCONFIG
x86/Kconfig: Update lists in X86_EXTENDED_PLATFORM
x86/Kconfig: Move all X86_EXTENDED_PLATFORM options together
x86/Kconfig: Always enable ARCH_SPARSEMEM_ENABLE
x86/Kconfig: Enable X86_X2APIC by default and improve help text
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Linus Torvalds
|
0ccff074d6 |
fwctl first pull request
fwctl is a new subsystem intended to bring some common rules and order to the growing pattern of exposing a secure FW interface directly to userspace. Unlike existing places like RDMA/DRM/VFIO/uacce that are exposing a device for datapath operations fwctl is focused on debugging, configuration and provisioning of the device. It will not have the necessary features like interrupt delivery to support a datapath. This concept is similar to the long standing practice in the "HW" RAID space of having a device specific misc device to manage the RAID controller FW. fwctl generalizes this notion of a companion debug and management interface that goes along with a dataplane implemented in an appropriate subsystem. There have been three LWN articles written discussing various aspects of this: https://lwn.net/Articles/955001/ https://lwn.net/Articles/969383/ https://lwn.net/Articles/990802/ This pull requests includes three drivers to launch the subsystem: - CXL provides a vendor scheme for executing commands and a way to learn the 'command effects' (ie the security properties) of such commands. The fwctl driver allows access to these mechanism within the fwctl security model - mlx5 is family of networking products, the driver supports all current Mellanox HW still receiving FW feature updates. This includes RDMA multiprotocol NICs like ConnectX and the Bluefield family of Smart NICs. - AMD/Pensando Distributed Services card is a multi protocol Smart NIC with a multi PCI function design. fwctl works on the management PCI function following a 'command effects' model similar to CXL. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCZ939zQAKCRCFwuHvBreF YdOoAQCJq59/UC7lXU+sOsR6LISaDVTT5jAweBo0o036P9+DNAEA1iQdZ/GK2yCJ Ub33Xo9L+hzIpIbCouI3BtCXqymybAg= =f5YG -----END PGP SIGNATURE----- Merge tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull fwctl subsystem from Jason Gunthorpe: "fwctl is a new subsystem intended to bring some common rules and order to the growing pattern of exposing a secure FW interface directly to userspace. Unlike existing places like RDMA/DRM/VFIO/uacce that are exposing a device for datapath operations fwctl is focused on debugging, configuration and provisioning of the device. It will not have the necessary features like interrupt delivery to support a datapath. This concept is similar to the long standing practice in the "HW" RAID space of having a device specific misc device to manage the RAID controller FW. fwctl generalizes this notion of a companion debug and management interface that goes along with a dataplane implemented in an appropriate subsystem. There have been three LWN articles written discussing various aspects of this: https://lwn.net/Articles/955001/ https://lwn.net/Articles/969383/ https://lwn.net/Articles/990802/ This includes three drivers to launch the subsystem: - CXL provides a vendor scheme for executing commands and a way to learn the 'command effects' (ie the security properties) of such commands. The fwctl driver allows access to these mechanism within the fwctl security model - mlx5 is family of networking products, the driver supports all current Mellanox HW still receiving FW feature updates. This includes RDMA multiprotocol NICs like ConnectX and the Bluefield family of Smart NICs. - AMD/Pensando Distributed Services card is a multi protocol Smart NIC with a multi PCI function design. fwctl works on the management PCI function following a 'command effects' model similar to CXL" * tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (30 commits) pds_fwctl: add Documentation entries pds_fwctl: add rpc and query support pds_fwctl: initial driver framework pds_core: add new fwctl auxiliary_device pds_core: specify auxiliary_device to be created pds_core: make pdsc_auxbus_dev_del() void cxl: Fixup kdoc issues for include/cxl/features.h fwctl/cxl: Add documentation to FWCTL CXL cxl/test: Add Set Feature support to cxl_test cxl/test: Add Get Feature support to cxl_test cxl: Add support to handle user feature commands for set feature cxl: Add support to handle user feature commands for get feature cxl: Add support for fwctl RPC command to enable CXL feature commands cxl: Move cxl feature command structs to user header cxl: Add FWCTL support to CXL mlx5: Create an auxiliary device for fwctl_mlx5 fwctl/mlx5: Support for communicating with mlx5 fw fwctl: Add documentation fwctl: FWCTL_RPC to execute a Remote Procedure Call to device firmware taint: Add TAINT_FWCTL ... |
||
|
Linus Torvalds
|
7288511606 |
Landlock update for v6.15-rc1
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Merge tag 'landlock-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"This brings two main changes to Landlock:
- A signal scoping fix with a new interface for user space to know if
it is compatible with the running kernel.
- Audit support to give visibility on why access requests are denied,
including the origin of the security policy, missing access rights,
and description of object(s). This was designed to limit log spam
as much as possible while still alerting about unexpected blocked
access.
With these changes come new and improved documentation, and a lot of
new tests"
* tag 'landlock-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (36 commits)
landlock: Add audit documentation
selftests/landlock: Add audit tests for network
selftests/landlock: Add audit tests for filesystem
selftests/landlock: Add audit tests for abstract UNIX socket scoping
selftests/landlock: Add audit tests for ptrace
selftests/landlock: Test audit with restrict flags
selftests/landlock: Add tests for audit flags and domain IDs
selftests/landlock: Extend tests for landlock_restrict_self(2)'s flags
selftests/landlock: Add test for invalid ruleset file descriptor
samples/landlock: Enable users to log sandbox denials
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_*_EXEC_* flags
landlock: Log scoped denials
landlock: Log TCP bind and connect denials
landlock: Log truncate and IOCTL denials
landlock: Factor out IOCTL hooks
landlock: Log file-related denials
landlock: Log mount-related denials
landlock: Add AUDIT_LANDLOCK_DOMAIN and log domain status
landlock: Add AUDIT_LANDLOCK_ACCESS and log ptrace denials
...
|
||
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LongPing Wei
|
5c5d0d7050 |
dm-verity: support block number limits for different ioprio classes
Calling verity_verify_io in bh for IO of all sizes is not suitable for embedded devices. From our tests, it can improve the performance of 4K synchronise random reads. For example: ./fio --name=rand_read --ioengine=psync --rw=randread --bs=4K \ --direct=1 --numjobs=8 --runtime=60 --time_based --group_reporting \ --filename=/dev/block/mapper/xx-verity But it will degrade the performance of 512K synchronise sequential reads on our devices. For example: ./fio --name=read --ioengine=psync --rw=read --bs=512K --direct=1 \ --numjobs=8 --runtime=60 --time_based --group_reporting \ --filename=/dev/block/mapper/xx-verity A parameter array is introduced by this change. And users can modify the default config by /sys/module/dm_verity/parameters/use_bh_bytes. The default limits for NONE/RT/BE is set to 8192. The default limits for IDLE is set to 0. Call verity_verify_io directly when verity_end_io is not in hardirq. Signed-off-by: LongPing Wei <weilongping@oppo.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
Linus Torvalds
|
7b667acd69 |
powerpc updates for 6.15
- Removal of support for IBM Cell Blades - SMP support for microwatt platform - Support for inline static calls on PPC32 - Enable pmu selftests for power11 platform - Enable hardware trace macro (HTM) hcall support - Support for limited address mode capability - Changes to RMA size from 512 MB to 768 MB to handle fadump - Misc fixes and cleanups Thanks to: Abhishek Dubey, Amit Machhiwal, Andreas Schwab, Arnd Bergmann, Athira Rajeev, Avnish Chouhan, Christophe Leroy, Disha Goel, Donet Tom, Gaurav Batra, Gautam Menghani, Hari Bathini, Kajol Jain, Kees Cook, Mahesh Salgaonkar, Michael Ellerman, Paul Mackerras, Ritesh Harjani (IBM), Sathvika Vasireddy, Segher Boessenkool, Sourabh Jain, Vaibhav Jain, Venkat Rao Bagalkote. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEqX2DNAOgU8sBX3pRpnEsdPSHZJQFAmfjZnYACgkQpnEsdPSH ZJTmKg/+NGW7wyFY9d8Iai9ncYY7GSzsMSDTaan7qg0QWOd5gjHbsdbava7TM/DW 8p9XsC+17kSeftRNUjtc52bSN8Ei2gBdsXIagQG1alfB2X2e6wkNauifK+dz3Su6 usMEZZTO5R/jFDotFXNM1nsUj+8dvjnPgOUrji/P8k7PT5295wpza0hz1fy5SrOA hM5cliBP36UgFe5Efvgm4OUX2gQIhbc3stt9MVfymW/k0Mit5f41UIPuVGiTWowY s0cUJGkhxUlGXT3VfOVKuZfn4u9KMha7UCl9afSceJzXOdnUIKIbskui1VEv6cD/ iSIxi839uErAobFHlsLYprgYFciYLII3xe2qNZCA/ZxeIMS/Mm6xokESeWLhBnfa P7ke6l0z3GDtTvgI2eSeU9BdrVveF1NgbP9GYSKgT6gtw/kRRnxgHF8tzmLON5PT KXpQlzz8VuSBRtF2jnLFU89+FFwSA1bRUhDrp89HyYFqw1B5g4N7kFFTUJWHOuKS fwPGy+cveKehmCUBedeTRFqHvvqdwpD/WnPlQzCly3WxqdL8U/eTXYftMiAwuK28 ovLuSs3vRThKRQ8DnUa5oB0UGsjMpRV5LdvYkhw+x8mZKUR59oj4fx2ae4TtPakg dbAYuPPkCORdaSga/nV6vQgsLprFpcGX3dq6E19+BVBAY5D+1PE= =GFcj -----END PGP SIGNATURE----- Merge tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Madhavan Srinivasan: - Remove support for IBM Cell Blades - SMP support for microwatt platform - Support for inline static calls on PPC32 - Enable pmu selftests for power11 platform - Enable hardware trace macro (HTM) hcall support - Support for limited address mode capability - Changes to RMA size from 512 MB to 768 MB to handle fadump - Misc fixes and cleanups Thanks to Abhishek Dubey, Amit Machhiwal, Andreas Schwab, Arnd Bergmann, Athira Rajeev, Avnish Chouhan, Christophe Leroy, Disha Goel, Donet Tom, Gaurav Batra, Gautam Menghani, Hari Bathini, Kajol Jain, Kees Cook, Mahesh Salgaonkar, Michael Ellerman, Paul Mackerras, Ritesh Harjani (IBM), Sathvika Vasireddy, Segher Boessenkool, Sourabh Jain, Vaibhav Jain, and Venkat Rao Bagalkote. * tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (61 commits) powerpc/kexec: fix physical address calculation in clear_utlb_entry() crypto: powerpc: Mark ghashp8-ppc.o as an OBJECT_FILES_NON_STANDARD powerpc: Fix 'intra_function_call not a direct call' warning powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu' KVM: PPC: Enable CAP_SPAPR_TCE_VFIO on pSeries KVM guests powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7 powerpc/microwatt: Add SMP support powerpc: Define config option for processors with broadcast TLBIE powerpc/microwatt: Define an idle power-save function powerpc/microwatt: Device-tree updates powerpc/microwatt: Select COMMON_CLK in order to get the clock framework net: toshiba: Remove reference to PPC_IBM_CELL_BLADE net: spider_net: Remove powerpc Cell driver cpufreq: ppc_cbe: Remove powerpc Cell driver genirq: Remove IRQ_EDGE_EOI_HANDLER docs: Remove reference to removed CBE_CPUFREQ_SPU_GOVERNOR powerpc: Remove UDBG_RTAS_CONSOLE powerpc/io: Use standard barrier macros in io.c powerpc/io: Rename _insw_ns() etc. powerpc/io: Use generic raw accessors ... |
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Linus Torvalds
|
96050814a3 |
printk changes for 6.15
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||
|
Linus Torvalds
|
744fab2d9f |
tracing updates for v6.15:
- Add option traceoff_after_boot In order to debug kernel boot, it sometimes is helpful to enable tracing via the kernel command line. Unfortunately, by the time the login prompt appears, the trace is overwritten by the init process and other user space start up applications. Adding a "traceoff_after_boot" will disable tracing when the kernel passes control to init which will allow developers to be able to see the traces that occurred during boot. - Clean up the mmflags macros that display the GFP flags in trace events The macros to print the GFP flags for trace events had a bit of duplication. The code was restructured to remove duplication and in the process it also adds some flags that were missed before. - Removed some dead code and scripts/draw_functrace.py draw_functrace.py hasn't worked in years and as nobody complained about it, remove it. - Constify struct event_trigger_ops The event_trigger_ops is just a structure that has function pointers that are assigned when the variables are created. These variables should all be constants. - Other minor clean ups and fixes -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ+V9IhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qr4RAP9JhE3n69pGuOVaJTN/LGLr2Axl59n4 KqZSZS1nUM76/gD6AxYpR7nxyxgJ7VjNkLptS9tSjJVdPDxGAl0v3eO04w4= =SU30 -----END PGP SIGNATURE----- Merge tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Add option traceoff_after_boot In order to debug kernel boot, it sometimes is helpful to enable tracing via the kernel command line. Unfortunately, by the time the login prompt appears, the trace is overwritten by the init process and other user space start up applications. Adding a "traceoff_after_boot" will disable tracing when the kernel passes control to init which will allow developers to be able to see the traces that occurred during boot. - Clean up the mmflags macros that display the GFP flags in trace events The macros to print the GFP flags for trace events had a bit of duplication. The code was restructured to remove duplication and in the process it also adds some flags that were missed before. - Removed some dead code and scripts/draw_functrace.py draw_functrace.py hasn't worked in years and as nobody complained about it, remove it. - Constify struct event_trigger_ops The event_trigger_ops is just a structure that has function pointers that are assigned when the variables are created. These variables should all be constants. - Other minor clean ups and fixes * tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: Replace strncpy with memcpy for fixed-length substring copy tracing: Fix synth event printk format for str fields tracing: Do not use PERF enums when perf is not defined tracing: Ensure module defining synth event cannot be unloaded while tracing tracing: fix return value in __ftrace_event_enable_disable for TRACE_REG_UNREGISTER tracing/osnoise: Fix possible recursive locking for cpus_read_lock() tracing: Align synth event print fmt tracing: gfp: vsprintf: Do not print "none" when using %pGg printf format tracepoint: Print the function symbol when tracepoint_debug is set tracing: Constify struct event_trigger_ops scripts/tracing: Remove scripts/tracing/draw_functrace.py tracing: Update MAINTAINERS file to include tracepoint.c tracing/user_events: Slightly simplify user_seq_show() tracing/user_events: Don't use %pK through printk tracing: gfp: Remove duplication of recording GFP flags tracing: Remove orphaned event_trace_printk ring-buffer: Fix typo in comment about header page pointer tracing: Add traceoff_after_boot option |
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|
Linus Torvalds
|
5c2a430e85 |
Ext4 bug fixes and cleanups, including:
* hardening against maliciously fuzzed file systems
* backwards compatibility for the brief period when we attempted to
ignore zero-width characters
* avoid potentially BUG'ing if there is a file system corruption found
during the file system unmount
* fix free space reporting by statfs when project quotas are enabled
and the free space is less than the remaining project quota
Also improve performance when replaying a journal with a very large
number of revoke records (applicable for Lustre volumes).
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Merge tag 'ext4-for_linus-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Ext4 bug fixes and cleanups, including:
- hardening against maliciously fuzzed file systems
- backwards compatibility for the brief period when we attempted to
ignore zero-width characters
- avoid potentially BUG'ing if there is a file system corruption
found during the file system unmount
- fix free space reporting by statfs when project quotas are enabled
and the free space is less than the remaining project quota
Also improve performance when replaying a journal with a very large
number of revoke records (applicable for Lustre volumes)"
* tag 'ext4-for_linus-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (71 commits)
ext4: fix OOB read when checking dotdot dir
ext4: on a remount, only log the ro or r/w state when it has changed
ext4: correct the error handle in ext4_fallocate()
ext4: Make sb update interval tunable
ext4: avoid journaling sb update on error if journal is destroying
ext4: define ext4_journal_destroy wrapper
ext4: hash: simplify kzalloc(n * 1, ...) to kzalloc(n, ...)
jbd2: add a missing data flush during file and fs synchronization
ext4: don't over-report free space or inodes in statvfs
ext4: clear DISCARD flag if device does not support discard
jbd2: remove jbd2_journal_unfile_buffer()
ext4: reorder capability check last
ext4: update the comment about mb_optimize_scan
jbd2: fix off-by-one while erasing journal
ext4: remove references to bh->b_page
ext4: goto right label 'out_mmap_sem' in ext4_setattr()
ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
ext4: introduce ITAIL helper
jbd2: remove redundant function jbd2_journal_has_csum_v2or3_feature
ext4: remove redundant function ext4_has_metadata_csum
...
|
||
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Petr Mladek
|
f49040c7aa | Merge branch 'for-6.15-console-suspend-api-cleanup' into for-linus | ||
|
Linus Torvalds
|
22093997ac |
ata changes for 6.15
- Add 'external' to the libata.force module parameter, in order to
allow a user to workaround broken firmware (me)
- Use the str_up_down() helper in the sata_via driver (Salah Triki)
- Convert the Freescale PowerQUICC SATA device tree binding to YAML
(J. Neuschäfer)
- Do not use ATAPI DMA for a device that only supports PIO (me)
- Add Marvell 88SE9215 PCI device ID to the ahci driver.
Since the controller has quirks, it cannot rely on the generic
AHCI PCI class code entry (Daniel Kral)
- Improve the return value of atapi_check_dma() (Huacai Chen)
- Fix the NCQ Non-Data log not supported print to actually reference
the correct log (me)
- Make Marvel 88SE9215 prefer DMA for ATAPI devices (Huacai Chen)
- Simplify the AHCI IRQ vector allocations by performing the IRQ
vector allocations in the same function, regardless of IRQ type
(Tomas Henzl)
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Merge tag 'ata-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata updates from Niklas Cassel:
- Add 'external' to the libata.force module parameter, in order to
allow a user to workaround broken firmware (me)
- Use the str_up_down() helper in the sata_via driver (Salah Triki)
- Convert the Freescale PowerQUICC SATA device tree binding to YAML
(J. Neuschäfer)
- Do not use ATAPI DMA for a device that only supports PIO (me)
- Add Marvell 88SE9215 PCI device ID to the ahci driver. Since the
controller has quirks, it cannot rely on the generic AHCI PCI class
code entry (Daniel Kral)
- Improve the return value of atapi_check_dma() (Huacai Chen)
- Fix the NCQ Non-Data log not supported print to actually reference
the correct log (me)
- Make Marvel 88SE9215 prefer DMA for ATAPI devices (Huacai Chen)
- Simplify the AHCI IRQ vector allocations by performing the IRQ vector
allocations in the same function, regardless of IRQ type (Tomas
Henzl)
* tag 'ata-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: ahci: simplify init function
ahci: Marvell 88SE9215 controllers prefer DMA for ATAPI
ata: libata: Fix NCQ Non-Data log not supported print
ata: libata: Improve return value of atapi_check_dma()
ahci: add PCI ID for Marvell 88SE9215 SATA Controller
ata: libata-eh: Do not use ATAPI DMA for a device limited to PIO mode
dt-bindings: ata: Convert fsl,pq-sata to YAML
ata: sata_via: Use str_up_down() helper in vt6420_prereset()
ata: libata-core: Add 'external' to the libata.force kernel parameter
|
||
|
Linus Torvalds
|
fb1ceb29b2 |
platform-drivers-x86 for v6.15-1
Highlights:
- alienware-wmi: Refactor and split WMAX/legacy drivers
- dell-ddv:
- Correct +0.1 offset in temperature
- Use the power supply extension mechanism for battery temperatures
- intel/pmc:
- Refactor init to mostly use a common init function
- Add support for Arrow Lake U/H
- Add support for Panther Lake
- intel/sst:
- Improve multi die handling
- Prefix header search path with sysroot (fixes cross-compiling)
- lenovo-wmi-hotkey-utilities: Support for mic & audio mute LEDs
- samsung-galaxybook: Add driver for Samsung Galaxy Book series
- wmi:
- Rework WCxx/WExx ACPI method handling
- Enable data block collection when the data block is set
- platform/arm:
- Add Huawei Matebook E Go EC driver
- platform/mellanox:
- Relocate to drivers/platform/mellanox/
- mlxbf-bootctl: RTC battery status sysfs support
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
alienware-wmi:
- Add a state container for LED control feature
- Add a state container for thermal control methods
- Add alienware-wmi.h
- Add WMI Drivers
- Refactor hdmi, amplifier, deepslp methods
- Refactor LED control methods
- Refactor thermal control methods
- Rename alienware-wmi.c
- Split DMI table
- Split the alienware-wmi driver
- Update alienware-wmi config entries
- Update header and module information
amd/pmc:
- fix leak in probe()
- Move macros and structures to the PMC header file
- Notify user when platform does not support s0ix transition
- Remove unnecessary line breaks
- Use managed APIs for mutex
amd/pmf:
- convert timeouts to secs_to_jiffies()
amd:
- Use *-y instead of *-objs in Makefiles
arm64:
- add Huawei Matebook E Go EC driver
arm64: dts: qcom: gaokun3:
- Add Embedded Controller node
compal-laptop:
- Do not include <linux/fb.h>
dell-ddv:
- Fix temperature calculation
- Use devm_battery_hook_register
- Use the power supply extension mechanism
dell: dell-wmi-sysman:
- Use *-y instead of *-objs in Makefile
dell:
- Modify Makefile alignment
- Use *-y instead of *-objs in Makefile
dell-uart-backlight:
- Make dell_uart_bl_serdev_driver static
dt-bindings: platform:
- Add Huawei Matebook E Go EC
hp-bioscfg:
- Replace deprecated strncpy() with strscpy()
- Use wmi_instance_count()
hp:
- Use *-y instead of *-objs in Makefile
hwmon:
- (hp-wmi-sensors) Use the WMI bus API when accessing sensors
ideapad-laptop:
- use dev_groups to register attribute groups
int3472:
- Call "func" "con_id" instead
intel/pmc:
- Add Arrow Lake U/H support to intel_pmc_core driver
- Add Panther Lake support to intel_pmc_core
- Create generic_core_init() for all platforms
- Make tgl_core_generic_init() static
- Move arch specific action to init function
- Remove duplicate enum
- Remove simple init functions
- Remove unnecessary declarations in header
- Remove unneeded extern keyword in header
intel:
- Use *-y instead of *-objs in Makefile
irqdomain: platform/x86:
- Switch to irq_domain_create_linear()
lenovo-wmi-hotkey-utilities.c:
- Support for mic and audio mute LEDs
lenovo-yoga-tab2-pro-1380-fastcharger:
- Make symbol static
MAINTAINERS:
- Add documentation reference for Mellanox platform
- Update ALIENWARE WMI DRIVER entry
mellanox:
- Relocate mlx-platform driver
mlxbf-bootctl:
- Support sysfs entries for RTC battery status
mlx-platform:
- Change register name
- Cosmetic changes
samsung-galaxybook:
- Add samsung-galaxybook driver
- Fix block_recording not supported logic
sonypi:
- Use str_on_off() helper in sonypi_display_info()
think-lmi:
- Use ACPI object when extracting strings
- Use WMI bus API when accessing BIOS settings
thinkpad_acpi:
- check the return value of devm_mutex_init()
- convert timeouts to secs_to_jiffies()
- Do not include <linux/fb.h>
- Move HWMON initialization to tpacpi_hwmon_pdriver's probe
- Move subdriver initialization to tpacpi_pdriver's probe.
tools/power/x86/intel-speed-select:
- Die ID for IO dies
- Fix the condition to check multi die system
- Prefix header search path with sysroot
- Prevent increasing MAX_DIE_PER_PACKAGE
- v1.22 release
wmi:
- Call WCxx methods when setting data blocks
- Rework WCxx/WExx ACPI method handling
- Update documentation regarding the GUID-based API
- Use devres to disable the WMI device
x86-android-tablets:
- Add select POWER_SUPPLY to Kconfig
Merges:
- Merge branch 'fixes' into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into review-ilpo-next
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Merge tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers updates from Ilpo Järvinen:
- alienware-wmi:
- Refactor and split WMAX/legacy drivers
- dell-ddv:
- Correct +0.1 offset in temperature
- Use the power supply extension mechanism for battery temperatures
- intel/pmc:
- Refactor init to mostly use a common init function
- Add support for Arrow Lake U/H
- Add support for Panther Lake
- intel/sst:
- Improve multi die handling
- Prefix header search path with sysroot (fixes cross-compiling)
- lenovo-wmi-hotkey-utilities:
- Support for mic & audio mute LEDs
- samsung-galaxybook:
- Add driver for Samsung Galaxy Book series
- wmi:
- Rework WCxx/WExx ACPI method handling
- Enable data block collection when the data block is set
- platform/arm:
- Add Huawei Matebook E Go EC driver
- platform/mellanox:
- Relocate to drivers/platform/mellanox/
- mlxbf-bootctl:
- RTC battery status sysfs support
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (75 commits)
platform/x86: x86-android-tablets: Add select POWER_SUPPLY to Kconfig
platform/x86/amd/pmf: convert timeouts to secs_to_jiffies()
platform/x86: thinkpad_acpi: convert timeouts to secs_to_jiffies()
irqdomain: platform/x86: Switch to irq_domain_create_linear()
platform/x86/amd/pmc: fix leak in probe()
tools/power/x86/intel-speed-select: v1.22 release
tools/power/x86/intel-speed-select: Prefix header search path with sysroot
tools/power/x86/intel-speed-select: Die ID for IO dies
tools/power/x86/intel-speed-select: Fix the condition to check multi die system
tools/power/x86/intel-speed-select: Prevent increasing MAX_DIE_PER_PACKAGE
platform/x86/amd/pmc: Use managed APIs for mutex
platform/x86/amd/pmc: Remove unnecessary line breaks
platform/x86/amd/pmc: Move macros and structures to the PMC header file
platform/x86/amd/pmc: Notify user when platform does not support s0ix transition
platform/x86: dell-ddv: Use the power supply extension mechanism
platform/x86: dell-ddv: Use devm_battery_hook_register
platform/x86: dell-ddv: Fix temperature calculation
platform/x86: thinkpad_acpi: check the return value of devm_mutex_init()
platform/x86: samsung-galaxybook: Fix block_recording not supported logic
platform/x86: dell-uart-backlight: Make dell_uart_bl_serdev_driver static
...
|
||
|
Mickaël Salaün
|
8e2dd47b10
|
landlock: Add audit documentation
Because audit is dedicated to the system administrator, create a new entry in Documentation/admin-guide/LSM . Extend other Landlock documentation's pages with this new one. Extend UAPI with the new log flags. Extend the guiding principles with logs. Cc: Günther Noack <gnoack@google.com> Cc: Paul Moore <paul@paul-moore.com> Link: https://lore.kernel.org/r/20250320190717.2287696-29-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net> |
||
|
Linus Torvalds
|
1e26c5e28c |
[GIT PULL for v6.15] media updates
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||
|
Linus Torvalds
|
7d20aa5c32 |
Power management updates for 6.15-rc1
- Manage sysfs attributes and boost frequencies efficiently from
cpufreq core to reduce boilerplate code in drivers (Viresh Kumar).
- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, zuoqian).
- Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
Bai).
- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).
- Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng).
- Optimize the amd-pstate driver to avoid cases where call paths end
up calling the same writes multiple times and needlessly caching
variables through code reorganization, locking overhaul and tracing
adjustments (Mario Limonciello, Dhananjay Ugwekar).
- Make it possible to avoid enabling capacity-aware scheduling (CAS) in
the intel_pstate driver and relocate a check for out-of-band (OOB)
platform handling in it to make it detect OOB before checking HWP
availability (Rafael Wysocki).
- Fix dbs_update() to avoid inadvertent conversions of negative integer
values to unsigned int which causes CPU frequency selection to be
inaccurate in some cases when the "conservative" cpufreq governor is
in use (Jie Zhan).
- Update the handling of the most recent idle intervals in the menu
cpuidle governor to prevent useful information from being discarded
by it in some cases and improve the prediction accuracy (Rafael
Wysocki).
- Make it possible to tell the intel_idle driver to ignore its built-in
table of idle states for the given processor, clean up the handling
of auto-demotion disabling on Baytrail and Cherrytrail chips in it,
and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy,
Rafael Wysocki).
- Make some cpuidle drivers use for_each_present_cpu() instead of
for_each_possible_cpu() during initialization to avoid issues
occurring when nosmp or maxcpus=0 are used (Jacky Bai).
- Clean up the Energy Model handling code somewhat (Rafael Wysocki).
- Use kfree_rcu() to simplify the handling of runtime Energy Model
updates (Li RongQing).
- Add an entry for the Energy Model framework to MAINTAINERS as
properly maintained (Lukasz Luba).
- Address RCU-related sparse warnings in the Energy Model code (Rafael
Wysocki).
- Remove ENERGY_MODEL dependency on SMP and allow it to be selected
when DEVFREQ is set without CPUFREQ so it can be used on a wider
range of systems (Jeson Gao).
- Unify error handling during runtime suspend and runtime resume in the
core to help drivers to implement more consistent runtime PM error
handling (Rafael Wysocki).
- Drop a redundant check from pm_runtime_force_resume() and rearrange
documentation related to __pm_runtime_disable() (Rafael Wysocki).
- Rework the handling of the "smart suspend" driver flag in the PM core
to avoid issues hat may occur when drivers using it depend on some
other drivers and clean up the related PM core code (Rafael Wysocki,
Colin Ian King).
- Fix the handling of devices with the power.direct_complete flag set
if device_suspend() returns an error for at least one device to avoid
situations in which some of them may not be resumed (Rafael Wysocki).
- Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
possible deadlock that may occur if the "compressor" hibernation
module parameter is accessed during the registration of a new
ieee80211 device (Lizhi Xu).
- Suppress sleeping parent warning in device_pm_add() in the case when
new children are added under a device with the power.direct_complete
set after it has been processed by device_resume() (Xu Yang).
- Remove needless return in three void functions related to system
wakeup (Zijun Hu).
- Replace deprecated kmap_atomic() with kmap_local_page() in the
hibernation core code (David Reaver).
- Remove unused helper functions related to system sleep (David Alan
Gilbert).
- Clean up s2idle_enter() so it does not lock and unlock CPU offline
in vain and update comments in it (Ulf Hansson).
- Clean up broken white space in dpm_wait_for_children() (Geert
Uytterhoeven).
- Update the cpupower utility to fix lib version-ing in it and memory
leaks in error legs, remove hard-coded values, and implement CPU
physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
Khan, Yiwei Lin, Zhongqiu Han).
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Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These are dominated by cpufreq updates which in turn are dominated by
updates related to boost support in the core and drivers and
amd-pstate driver optimizations.
Apart from the above, there are some cpuidle updates including a
rework of the most recent idle intervals handling in the venerable
menu governor that leads to significant improvements in some
performance benchmarks, as the governor is now more likely to predict
a shorter idle duration in some cases, and there are updates of the
core device power management code, mostly related to system suspend
and resume, that should help to avoid potential issues arising when
the drivers of devices depending on one another want to use different
optimizations.
There is also a usual collection of assorted fixes and cleanups,
including removal of some unused code.
Specifics:
- Manage sysfs attributes and boost frequencies efficiently from
cpufreq core to reduce boilerplate code in drivers (Viresh Kumar)
- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, zuoqian)
- Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
Bai)
- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski)
- Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng)
- Optimize the amd-pstate driver to avoid cases where call paths end
up calling the same writes multiple times and needlessly caching
variables through code reorganization, locking overhaul and tracing
adjustments (Mario Limonciello, Dhananjay Ugwekar)
- Make it possible to avoid enabling capacity-aware scheduling (CAS)
in the intel_pstate driver and relocate a check for out-of-band
(OOB) platform handling in it to make it detect OOB before checking
HWP availability (Rafael Wysocki)
- Fix dbs_update() to avoid inadvertent conversions of negative
integer values to unsigned int which causes CPU frequency selection
to be inaccurate in some cases when the "conservative" cpufreq
governor is in use (Jie Zhan)
- Update the handling of the most recent idle intervals in the menu
cpuidle governor to prevent useful information from being discarded
by it in some cases and improve the prediction accuracy (Rafael
Wysocki)
- Make it possible to tell the intel_idle driver to ignore its
built-in table of idle states for the given processor, clean up the
handling of auto-demotion disabling on Baytrail and Cherrytrail
chips in it, and update its MAINTAINERS entry (David Arcari, Artem
Bityutskiy, Rafael Wysocki)
- Make some cpuidle drivers use for_each_present_cpu() instead of
for_each_possible_cpu() during initialization to avoid issues
occurring when nosmp or maxcpus=0 are used (Jacky Bai)
- Clean up the Energy Model handling code somewhat (Rafael Wysocki)
- Use kfree_rcu() to simplify the handling of runtime Energy Model
updates (Li RongQing)
- Add an entry for the Energy Model framework to MAINTAINERS as
properly maintained (Lukasz Luba)
- Address RCU-related sparse warnings in the Energy Model code
(Rafael Wysocki)
- Remove ENERGY_MODEL dependency on SMP and allow it to be selected
when DEVFREQ is set without CPUFREQ so it can be used on a wider
range of systems (Jeson Gao)
- Unify error handling during runtime suspend and runtime resume in
the core to help drivers to implement more consistent runtime PM
error handling (Rafael Wysocki)
- Drop a redundant check from pm_runtime_force_resume() and rearrange
documentation related to __pm_runtime_disable() (Rafael Wysocki)
- Rework the handling of the "smart suspend" driver flag in the PM
core to avoid issues hat may occur when drivers using it depend on
some other drivers and clean up the related PM core code (Rafael
Wysocki, Colin Ian King)
- Fix the handling of devices with the power.direct_complete flag set
if device_suspend() returns an error for at least one device to
avoid situations in which some of them may not be resumed (Rafael
Wysocki)
- Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
possible deadlock that may occur if the "compressor" hibernation
module parameter is accessed during the registration of a new
ieee80211 device (Lizhi Xu)
- Suppress sleeping parent warning in device_pm_add() in the case
when new children are added under a device with the
power.direct_complete set after it has been processed by
device_resume() (Xu Yang)
- Remove needless return in three void functions related to system
wakeup (Zijun Hu)
- Replace deprecated kmap_atomic() with kmap_local_page() in the
hibernation core code (David Reaver)
- Remove unused helper functions related to system sleep (David Alan
Gilbert)
- Clean up s2idle_enter() so it does not lock and unlock CPU offline
in vain and update comments in it (Ulf Hansson)
- Clean up broken white space in dpm_wait_for_children() (Geert
Uytterhoeven)
- Update the cpupower utility to fix lib version-ing in it and memory
leaks in error legs, remove hard-coded values, and implement CPU
physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
Khan, Yiwei Lin, Zhongqiu Han)"
* tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (139 commits)
PM: sleep: Fix bit masking operation
dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
cpufreq: Init cpufreq only for present CPUs
PM: sleep: Fix handling devices with direct_complete set on errors
cpuidle: Init cpuidle only for present CPUs
PM: clk: Remove unused pm_clk_remove()
PM: sleep: core: Fix indentation in dpm_wait_for_children()
PM: s2idle: Extend comment in s2idle_enter()
PM: s2idle: Drop redundant locks when entering s2idle
PM: sleep: Remove unused pm_generic_ wrappers
cpufreq: tegra186: Share policy per cluster
cpupower: Make lib versioning scheme more obvious and fix version link
PM: EM: Rework the depends on for CONFIG_ENERGY_MODEL
PM: EM: Address RCU-related sparse warnings
cpupower: Implement CPU physical core querying
pm: cpupower: remove hard-coded topology depth values
pm: cpupower: Fix cmd_monitor() error legs to free cpu_topology
...
|
||
|
Linus Torvalds
|
21e0ff5b10 |
ACPI updates for 6.15-rc1
- Use the str_on_off() helper function instead of hard-coded strings in
the ACPI power resources handling code (Thorsten Blum).
- Add fan speed reporting for ACPI fans that have _FST, but otherwise
do not support the entire ACPI 4 fan interface (Joshua Grisham).
- Fix a stale comment regarding trip points in acpi_thermal_add() that
diverged from the commented code after removing _CRT evaluation from
acpi_thermal_get_trip_points() (xueqin Luo).
- Make ACPI button driver also subscribe to system events (Mario
Limonciello).
- Use the str_yes_no() helper function instead of hard-coded strings in
the ACPI backlight (video) driver (Thorsten Blum).
- Add a missing header file include to the x86 arch CPPC code (Mario
Limonciello).
- Rework the sysfs attributes implementation in the ACPI platform-profile
driver and improve the unregistration code in it (Nathan Chancellor,
Kurt Borja).
- Prevent the ACPI HED driver from being built as a module and change
its initcall level to subsys_initcall to avoid initialization ordering
issues related to it (Xiaofei Tan).
- Update a maintainer email address in the ACPI PMIC entry in
MAINTAINERS (Mika Westerberg).
- Address a GCC 15's -Wunterminated-string-initialization warning in
the core PNP subsystem code and remove some dead code from it (Kees
Cook, David Alan Gilbert).
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Merge tag 'acpi-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"From the functional perspective, the most significant changes here are
the ACPI fan driver update allowing it to handle fans with
fine-grained state checking supported, but without fine-grained
control, and the ACPI button driver update making it subscribe to
system event notifications (in addition to device notifications) which
on some systems is requisite for waking up the system from sleep.
The rest is fixes and cleanups including removal of some dead code.
Specifics:
- Use the str_on_off() helper function instead of hard-coded strings
in the ACPI power resources handling code (Thorsten Blum)
- Add fan speed reporting for ACPI fans that have _FST, but otherwise
do not support the entire ACPI 4 fan interface (Joshua Grisham)
- Fix a stale comment regarding trip points in acpi_thermal_add()
that diverged from the commented code after removing _CRT
evaluation from acpi_thermal_get_trip_points() (xueqin Luo)
- Make ACPI button driver also subscribe to system events (Mario
Limonciello)
- Use the str_yes_no() helper function instead of hard-coded strings
in the ACPI backlight (video) driver (Thorsten Blum)
- Add a missing header file include to the x86 arch CPPC code (Mario
Limonciello)
- Rework the sysfs attributes implementation in the ACPI
platform-profile driver and improve the unregistration code in it
(Nathan Chancellor, Kurt Borja)
- Prevent the ACPI HED driver from being built as a module and change
its initcall level to subsys_initcall to avoid initialization
ordering issues related to it (Xiaofei Tan)
- Update a maintainer email address in the ACPI PMIC entry in
MAINTAINERS (Mika Westerberg)
- Address a GCC 15's -Wunterminated-string-initialization warning in
the core PNP subsystem code and remove some dead code from it (Kees
Cook, David Alan Gilbert)"
* tag 'acpi-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PNP: Expand length of fixup id string
PNP: Remove prehistoric deadcode
ACPI: button: Install notifier for system events as well
ACPI: fan: Add fan speed reporting for fans with only _FST
ACPI: HED: Always initialize before evged
x86/ACPI: CPPC: Add missing include
ACPI: video: Use str_yes_no() helper in acpi_video_bus_add()
ACPI: platform_profile: Improve platform_profile_unregister()
ACPI: platform-profile: Fix CFI violation when accessing sysfs files
ACPI: power: Use str_on_off() helper function
ACPI: thermal: Fix stale comment regarding trip points
MAINTAINERS: Use my kernel.org address for ACPI PMIC work
|
||
|
Linus Torvalds
|
906174776c |
- Some preparatory work to convert the mitigations machinery to mitigating
attack vectors instead of single vulnerabilities - Untangle and remove a now unneeded X86_FEATURE_USE_IBPB flag - Add support for a Zen5-specific SRSO mitigation - Cleanups and minor improvements -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmfixS0ACgkQEsHwGGHe VUpi1xAAgvH2u8Eo8ibT5dABQpD65w3oQiykO+9aDpObG9w9beDVGlld8DJE61Rz 6tcE0Clp2H/tMcCbn8zXIJ92TQ3wIX/85uZwLi1VEM1Tx7A6VtAbPv8WKfZE3FCX 9v92HRKnK3ql+A2ZR+oyy+/8RedUmia7y7/bXH1H7Zf2uozoKkmq5cQnwfq5iU4A qNiKuvSlQwjZ8Zz6Ax1ugHUkE4R7mlKh8rccLXl4+mVr63/lkPHSY3OFTjcYf4HW Ir92N86Spfo0/l0vsOOsWoYKmoaiVP7ouJh7YbKR3B0BGN0pt2MT476mehkEs427 m4J6XhRKhIrsYmzEkLvvpsg12zO4/PKk8BEYNS7YPYlRaOwjV4ivyFS2aY6e55rh yUHyo9s+16f/Mp+/fNFXll3mdMxYBioPWh3M191nJkdfyKMrtf0MdKPRibaJB8wH yMF4D1gMx+hFbs0/VOS6dtqD9DKW7VgPg0LW+RysfhnLTuFFb5iBcH6Of7l7Z/Ca vVK+JxrhB1EDVI1+MKnESKPF9c6j3DRa2xrQHi/XYje1TGqnQ1v4CmsEObYBuJDN 9M9t4QLzNuA/DA5tS7cxxtQ3YUthuJjPLcO4EVHOCvnqCAxkzp0i3dVMUr+YISl+ 2yFqaZdTt8s8FjTI21LOyuloCo30ZLlzaorFa0lp2cIyYup+1vg= =btX/ -----END PGP SIGNATURE----- Merge tag 'x86_bugs_for_v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 speculation mitigation updates from Borislav Petkov: - Some preparatory work to convert the mitigations machinery to mitigating attack vectors instead of single vulnerabilities - Untangle and remove a now unneeded X86_FEATURE_USE_IBPB flag - Add support for a Zen5-specific SRSO mitigation - Cleanups and minor improvements * tag 'x86_bugs_for_v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Make spectre user default depend on MITIGATION_SPECTRE_V2 x86/bugs: Use the cpu_smt_possible() helper instead of open-coded code x86/bugs: Add AUTO mitigations for mds/taa/mmio/rfds x86/bugs: Relocate mds/taa/mmio/rfds defines x86/bugs: Add X86_BUG_SPECTRE_V2_USER x86/bugs: Remove X86_FEATURE_USE_IBPB KVM: nVMX: Always use IBPB to properly virtualize IBRS x86/bugs: Use a static branch to guard IBPB on vCPU switch x86/bugs: Remove the X86_FEATURE_USE_IBPB check in ib_prctl_set() x86/mm: Remove X86_FEATURE_USE_IBPB checks in cond_mitigation() x86/bugs: Move the X86_FEATURE_USE_IBPB check into callers x86/bugs: KVM: Add support for SRSO_MSR_FIX |
||
|
Linus Torvalds
|
2d09a9449e |
arm64 updates for 6.15:
Perf and PMUs:
- Support for the "Rainier" CPU PMU from Arm
- Preparatory driver changes and cleanups that pave the way for BRBE
support
- Support for partial virtualisation of the Apple-M1 PMU
- Support for the second event filter in Arm CSPMU designs
- Minor fixes and cleanups (CMN and DWC PMUs)
- Enable EL2 requirements for FEAT_PMUv3p9
Power, CPU topology:
- Support for AMUv1-based average CPU frequency
- Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It adds
a generic topology_is_primary_thread() function overridden by x86 and
powerpc
New(ish) features:
- MOPS (memcpy/memset) support for the uaccess routines
Security/confidential compute:
- Fix the DMA address for devices used in Realms with Arm CCA. The
CCA architecture uses the address bit to differentiate between shared
and private addresses
- Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
default
Memory management clean-ups:
- Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs
- Some minor page table accessor clean-ups
- PIE/POE (permission indirection/overlay) helpers clean-up
Kselftests:
- MTE: skip hugetlb tests if MTE is not supported on such mappings and
user correct naming for sync/async tag checking modes
Miscellaneous:
- Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
request)
- Sysreg updates for new register fields
- CPU type info for some Qualcomm Kryo cores
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Nothing major this time around.
Apart from the usual perf/PMU updates, some page table cleanups, the
notable features are average CPU frequency based on the AMUv1
counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
the uaccess routines.
Perf and PMUs:
- Support for the 'Rainier' CPU PMU from Arm
- Preparatory driver changes and cleanups that pave the way for BRBE
support
- Support for partial virtualisation of the Apple-M1 PMU
- Support for the second event filter in Arm CSPMU designs
- Minor fixes and cleanups (CMN and DWC PMUs)
- Enable EL2 requirements for FEAT_PMUv3p9
Power, CPU topology:
- Support for AMUv1-based average CPU frequency
- Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
adds a generic topology_is_primary_thread() function overridden by
x86 and powerpc
New(ish) features:
- MOPS (memcpy/memset) support for the uaccess routines
Security/confidential compute:
- Fix the DMA address for devices used in Realms with Arm CCA. The
CCA architecture uses the address bit to differentiate between
shared and private addresses
- Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
default
Memory management clean-ups:
- Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs
- Some minor page table accessor clean-ups
- PIE/POE (permission indirection/overlay) helpers clean-up
Kselftests:
- MTE: skip hugetlb tests if MTE is not supported on such mappings
and user correct naming for sync/async tag checking modes
Miscellaneous:
- Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
request)
- Sysreg updates for new register fields
- CPU type info for some Qualcomm Kryo cores"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
arm64: mm: Don't use %pK through printk
perf/arm_cspmu: Fix missing io.h include
arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
arm64: cputype: Add MIDR_CORTEX_A76AE
arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
arm64/sysreg: Enforce whole word match for open/close tokens
arm64/sysreg: Fix unbalanced closing block
arm64: Kconfig: Enable HOTPLUG_SMT
arm64: topology: Support SMT control on ACPI based system
arch_topology: Support SMT control for OF based system
cpu/SMT: Provide a default topology_is_primary_thread()
arm64/mm: Define PTDESC_ORDER
perf/arm_cspmu: Add PMEVFILT2R support
perf/arm_cspmu: Generalise event filtering
perf/arm_cspmu: Move register definitons to header
arm64/kernel: Always use level 2 or higher for early mappings
arm64/mm: Drop PXD_TABLE_BIT
arm64/mm: Check pmd_table() in pmd_trans_huge()
...
|
||
|
Denis Mukhin
|
3181424aea |
x86/early_printk: Add support for MMIO-based UARTs
During the bring-up of an x86 board, the kernel was crashing before
reaching the platform's console driver because of a bug in the firmware,
leaving no trace of the boot progress.
The only available method to debug the kernel boot process was via the
platform's MMIO-based UART, as the board lacked an I/O port-based UART,
PCI UART, or functional video output.
Then it turned out that earlyprintk= does not have a knob to configure
the MMIO-mapped UART.
Extend the early printk facility to support platform MMIO-based UARTs
on x86 systems, enabling debugging during the system bring-up phase.
The command line syntax to enable platform MMIO-based UART is:
earlyprintk=mmio,membase[,{nocfg|baudrate}][,keep]
Note, the change does not integrate MMIO-based UART support to:
arch/x86/boot/early_serial_console.c
Also, update kernel parameters documentation with the new syntax and
add the missing 'nocfg' setting to the PCI serial cards description.
Signed-off-by: Denis Mukhin <dmukhin@ford.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250324-earlyprintk-v3-1-aee7421dc469@ford.com
|
||
|
Linus Torvalds
|
e34c38057a |
[ Merge note: this pull request depends on you having merged
two locking commits in the locking tree,
part of the locking-core-2025-03-22 pull request. ]
x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid='
(Brendan Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and
related cleanups (Brian Gerst)
- Convert the stackprotector canary to a regular percpu
variable (Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB instruction
(Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation
(Kirill A. Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems,
to support PCI BAR space beyond the 10TiB region
(CONFIG_PCI_P2PDMA=y) (Balbir Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Bootup:
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0
(Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI headers
(Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
(Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking instructions
(Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
(Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel,
Artem Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst,
Dan Carpenter, Dr. David Alan Gilbert, H. Peter Anvin,
Ingo Molnar, Josh Poimboeuf, Kevin Brodsky, Mike Rapoport,
Lukas Bulwahn, Maciej Wieczor-Retman, Max Grobecker,
Patryk Wlazlyn, Pawan Gupta, Peter Zijlstra,
Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak,
Vitaly Kuznetsov, Xin Li, liuye.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
"x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid=' (Brendan
Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and related cleanups
(Brian Gerst)
- Convert the stackprotector canary to a regular percpu variable
(Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB
instruction (Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation (Kirill A.
Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems, to support PCI
BAR space beyond the 10TiB region (CONFIG_PCI_P2PDMA=y) (Balbir
Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan
Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan
Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0 (Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI
headers (Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh
Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from
<asm/asm.h> (Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking
instructions (Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in
nmi_shootdown_cpus() (Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel, Artem
Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst, Dan
Carpenter, Dr. David Alan Gilbert, H. Peter Anvin, Ingo Molnar,
Josh Poimboeuf, Kevin Brodsky, Mike Rapoport, Lukas Bulwahn, Maciej
Wieczor-Retman, Max Grobecker, Patryk Wlazlyn, Pawan Gupta, Peter
Zijlstra, Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak, Vitaly
Kuznetsov, Xin Li, liuye"
* tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (211 commits)
zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
x86/asm: Make asm export of __ref_stack_chk_guard unconditional
x86/mm: Only do broadcast flush from reclaim if pages were unmapped
perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
perf/x86/intel, x86/cpu: Simplify Intel PMU initialization
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI headers
x86/locking/atomic: Improve performance by using asm_inline() for atomic locking instructions
x86/asm: Use asm_inline() instead of asm() in clwb()
x86/asm: Use CLFLUSHOPT and CLWB mnemonics in <asm/special_insns.h>
x86/hweight: Use asm_inline() instead of asm()
x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm()
x86/hweight: Use named operands in inline asm()
x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP
x86/head/64: Avoid Clang < 17 stack protector in startup code
x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
x86/runtime-const: Add the RUNTIME_CONST_PTR assembly macro
x86/cpu/intel: Limit the non-architectural constant_tsc model checks
x86/mm/pat: Replace Intel x86_model checks with VFM ones
x86/cpu/intel: Fix fast string initialization for extended Families
...
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||
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Linus Torvalds
|
3ba7dfb8da |
RCU pull request for v6.15
This pull request contains the following branches:
docs.2025.02.04a:
- Add broken-timing possibility to stallwarn.rst.
- Improve discussion of this_cpu_ptr(), add raw_cpu_ptr().
- Document self-propagating callbacks.
- Point call_srcu() to call_rcu() for detailed memory ordering.
- Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header.
- Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text.
- Remove references to old grace-period-wait primitives.
srcu.2025.02.05a:
- Introduce srcu_read_{un,}lock_fast(), which is similar to
srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock at the
cost of calling synchronize_rcu() in synchronize_srcu(). Moreover, by
returning the percpu offset of the counter at srcu_read_lock_fast()
time, srcu_read_unlock_fast() can save extra pointer dereferencing,
which makes it faster than srcu_read_{un,}lock_lite().
srcu_read_{un,}lock_fast() are intended to replace
rcu_read_{un,}lock_trace() if possible.
torture.2025.02.05a:
- Add get_torture_init_jiffies() to return the start time of the test.
- Add a test_boost_holdoff module parameter to allow delaying boosting
tests when building rcutorture as built-in.
- Add grace period sequence number logging at the beginning and end of
failure/close-call results.
- Switch to hexadecimal for the expedited grace period sequence number
in the rcu_exp_grace_period trace point.
- Make cur_ops->format_gp_seqs take buffer length.
- Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool.
- Complain when invalid SRCU reader_flavor is specified.
- Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
uses atomics even when percpu ops are NMI safe, and use the Kconfig
for SRCU lockdep testing.
misc.2025.03.04a:
- Split rcu_report_exp_cpu_mult() mask parameter and use for tracing.
- Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes().
- Fix get_state_synchronize_rcu_full() GP-start detection.
- Move RCU Tasks self-tests to core_initcall().
- Print segment lengths in show_rcu_nocb_gp_state().
- Make RCU watch ct_kernel_exit_state() warning.
- Flush console log from kernel_power_off().
- rcutorture: Allow a negative value for nfakewriters.
- rcu: Update TREE05.boot to test normal synchronize_rcu().
- rcu: Use _full() API to debug synchronize_rcu().
lazypreempt.2025.03.04a: Make RCU handle PREEMPT_LAZY better:
- Fix header guard for rcu_all_qs().
- rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY.
- Update __cond_resched comment about RCU quiescent states.
- Handle unstable rdp in rcu_read_unlock_strict().
- Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y.
- osnoise: Provide quiescent states.
- Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
combination.
- Limit PREEMPT_RCU configurations.
- Make rcutorture senario TREE07 and senario TREE10 use PREEMPT_LAZY=y.
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Merge tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Boqun Feng:
"Documentation:
- Add broken-timing possibility to stallwarn.rst
- Improve discussion of this_cpu_ptr(), add raw_cpu_ptr()
- Document self-propagating callbacks
- Point call_srcu() to call_rcu() for detailed memory ordering
- Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header
- Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text
- Remove references to old grace-period-wait primitives
srcu:
- Introduce srcu_read_{un,}lock_fast(), which is similar to
srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock
at the cost of calling synchronize_rcu() in synchronize_srcu()
Moreover, by returning the percpu offset of the counter at
srcu_read_lock_fast() time, srcu_read_unlock_fast() can avoid
extra pointer dereferencing, which makes it faster than
srcu_read_{un,}lock_lite()
srcu_read_{un,}lock_fast() are intended to replace
rcu_read_{un,}lock_trace() if possible
RCU torture:
- Add get_torture_init_jiffies() to return the start time of the test
- Add a test_boost_holdoff module parameter to allow delaying
boosting tests when building rcutorture as built-in
- Add grace period sequence number logging at the beginning and end
of failure/close-call results
- Switch to hexadecimal for the expedited grace period sequence
number in the rcu_exp_grace_period trace point
- Make cur_ops->format_gp_seqs take buffer length
- Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
- Complain when invalid SRCU reader_flavor is specified
- Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
uses atomics even when percpu ops are NMI safe, and use the Kconfig
for SRCU lockdep testing
Misc:
- Split rcu_report_exp_cpu_mult() mask parameter and use for tracing
- Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes()
- Fix get_state_synchronize_rcu_full() GP-start detection
- Move RCU Tasks self-tests to core_initcall()
- Print segment lengths in show_rcu_nocb_gp_state()
- Make RCU watch ct_kernel_exit_state() warning
- Flush console log from kernel_power_off()
- rcutorture: Allow a negative value for nfakewriters
- rcu: Update TREE05.boot to test normal synchronize_rcu()
- rcu: Use _full() API to debug synchronize_rcu()
Make RCU handle PREEMPT_LAZY better:
- Fix header guard for rcu_all_qs()
- rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY
- Update __cond_resched comment about RCU quiescent states
- Handle unstable rdp in rcu_read_unlock_strict()
- Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y
- osnoise: Provide quiescent states
- Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
combination
- Limit PREEMPT_RCU configurations
- Make rcutorture senario TREE07 and senario TREE10 use
PREEMPT_LAZY=y"
* tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y
rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y
rcu: limit PREEMPT_RCU configurations
rcutorture: Update ->extendables check for lazy preemption
rcutorture: Update rcutorture_one_extend_check() for lazy preemption
osnoise: provide quiescent states
rcu: Use _full() API to debug synchronize_rcu()
rcu: Update TREE05.boot to test normal synchronize_rcu()
rcutorture: Allow a negative value for nfakewriters
Flush console log from kernel_power_off()
context_tracking: Make RCU watch ct_kernel_exit_state() warning
rcu/nocb: Print segment lengths in show_rcu_nocb_gp_state()
rcu-tasks: Move RCU Tasks self-tests to core_initcall()
rcu: Fix get_state_synchronize_rcu_full() GP-start detection
torture: Make SRCU lockdep testing use srcu_read_lock_nmisafe()
srcu: Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing
rcutorture: Complain when invalid SRCU reader_flavor is specified
rcutorture: Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
rcutorture: Make cur_ops->format_gp_seqs take buffer length
rcutorture: Add ftrace-compatible timestamp to GP# failure/close-call output
...
|
||
|
Linus Torvalds
|
f81c2b8150 |
It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9. Much of
this is preparatory to replacing the ancient Perl scripts/kernel-doc
horror with a slightly less horrifying Python implementation, expected
for 6.16.
- Update the minimum Sphinx required to 3.4.3, allowing us to remove a
bunch of older compatibility code.
- Rework and improve the generation of the ABI documentation.
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that work will
still get to you via docs-next
- Try to standardize the format for indicating a developer's affiliation in
commit tags.
- Clarify the TAB's role in CoC enforcement actions.
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission.
Plus lots of other typo fixes and updates.
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Merge tag 'docs-6.15' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9
Much of this is preparatory to replacing the ancient Perl
scripts/kernel-doc horror with a slightly less horrifying Python
implementation, expected for 6.16
- Update the minimum Sphinx required to 3.4.3, allowing us to remove
a bunch of older compatibility code
- Rework and improve the generation of the ABI documentation
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that
work will still get to you via docs-next
- Try to standardize the format for indicating a developer's
affiliation in commit tags
- Clarify the TAB's role in CoC enforcement actions
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission
Plus lots of other typo fixes and updates"
* tag 'docs-6.15' of git://git.lwn.net/linux: (98 commits)
docs/zh_CN: fix spelling mistake
docs/Chinese: change the disclaimer words
docs/zh_CN: Add snp-tdx-threat-model index Chinese translation
docs: driver-api: firmware: clarify userspace requirements
docs: clarify rules wrt tagging other people
docs: Remove outdated highuid.rst documentation
Documentation: dma-buf: heaps: Add heap name definitions
docs/.../submit-checklist: Use Documentation/admin-guide/abi.rst for cross-ref of README
docs: Correct installation instruction
Documentation: kcsan: fix "Plain Accesses and Data Races" URL in kcsan.rst
Documentation/CoC: Spell out the TAB role in enforcement decisions
Documentation: ocxl.rst: Update consortium site
scripts: get_feat.pl: substitute s390x with s390
scripts/kernel-doc: drop dead code for Wcontents_before_sections
scripts/kernel-doc: don't add not needed new lines
docs: driver-api/infiniband.rst: fix Kerneldoc markup
drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup
drivers: media: intel-ipu3.h: fix identation on a kernel-doc markup
include/asm-generic/io.h: fix kerneldoc markup
Docs/arch/arm64: Fix spelling in amu.rst
...
|
||
|
Linus Torvalds
|
94dc216ad8 |
cgroup: Changes for v6.15
- Add deprecation info messages to cgroup1-only features. - rstat updates including a bug fix and breaking up a critical section to reduce interrupt latency impact. - Other misc and doc updates. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZ9xO2g4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGQz4AQDeWKmngRsnddEMkqOV1ArwXSr+8xUQrvCBx0RL vcjOQQEAusGCTeGXWJ96kw+N9BXvGwFsfSeoxjOqAnvrBS1EgAc= =WvJg -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Add deprecation info messages to cgroup1-only features - rstat updates including a bug fix and breaking up a critical section to reduce interrupt latency impact - Other misc and doc updates * tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: rstat: Cleanup flushing functions and locking cgroup/rstat: avoid disabling irqs for O(num_cpu) mm: Fix a build breakage in memcontrol-v1.c blk-cgroup: Simplify policy files registration cgroup: Update file naming comment cgroup: Add deprecation message to legacy freezer controller mm: Add transformation message for per-memcg swappiness RFC cgroup/cpuset-v1: Add deprecation messages to sched_relax_domain_level cgroup/cpuset-v1: Add deprecation messages to memory_migrate cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall cgroup: Print message when /proc/cgroups is read on v2-only system cgroup/blkio: Add deprecation messages to reset_stats cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab cgroup/cpuset-v1: Add deprecation messages to sched_load_balance and memory_pressure_enabled cgroup, docs: Be explicit about independence of RT_GROUP_SCHED and non-cpu controllers cgroup/rstat: Fix forceidle time in cpu.stat cgroup/misc: Remove unused misc_cg_res_total_usage cgroup/cpuset: Move procfs cpuset attribute under cgroup-v1.c cgroup: update comment about dropping cgroup kn refs |
||
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Linus Torvalds
|
fc13a78e1f |
hardening updates for v6.15-rc1
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile time
(Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for it
- Introduce __nonstring_array for silencing future GCC 15 warnings
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Merge tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As usual, it's scattered changes all over. Patches touching things
outside of our traditional areas in the tree have been Acked by
maintainers or were trivial changes:
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan
Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile
time (Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of
memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for
it
- Introduce __nonstring_array for silencing future GCC 15 warnings"
* tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
compiler_types: Introduce __nonstring_array
hardening: Enable i386 FORTIFY_SOURCE on Clang 16+
x86/build: Remove -ffreestanding on i386 with GCC
ubsan/overflow: Enable ignorelist parsing and add type filter
ubsan/overflow: Enable pattern exclusions
ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
samples/check-exec: Fix script name
yama: don't abuse rcu_read_lock/get_task_struct in yama_task_prctl()
kbuild: clang: Support building UM with SUBARCH=i386
loadpin: remove MODULE_COMPRESS_NONE as it is no longer supported
lib/string_choices: Rearrange functions in sorted order
string.h: Validate memtostr*()/strtomem*() arguments more carefully
compiler.h: Introduce __must_be_noncstr()
nilfs2: Mark on-disk strings as nonstring
uapi: stddef.h: Introduce __kernel_nonstring
x86/tdx: Mark message.bytes as nonstring
string: kunit: Mark nonstring test strings as __nonstring
scsi: qla2xxx: Mark device strings as nonstring
scsi: mpt3sas: Mark device strings as nonstring
scsi: mpi3mr: Mark device strings as nonstring
...
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Rafael J. Wysocki
|
7a9072d859 |
Merge branch 'pm-cpuidle'
Merge cpuidle updates for 6.15-rc5, including a menu governor update that is reported to improve some benchmark results quite significantly: - Update the handling of the most recent idle intervals in the menu cpuidle governor to prevent useful information from being discarded by it in some cases and improve the prediction accuracy (Rafael Wysocki). - Make it possible to tell the intel_idle driver to ignore its built-in table of idle states for the given processor, clean up the handling of auto-demotion disabling on Baytrail and Cherrytrail chips in it, and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy, Rafael Wysocki). - Make some cpuidle drivers use for_each_present_cpu() instead of for_each_possible_cpu() during initialization to avoid issues occurring when nosmp or maxcpus=0 are used (Jacky Bai). * pm-cpuidle: cpuidle: Init cpuidle only for present CPUs cpuidle: intel_idle: Update MAINTAINERS intel_idle: introduce 'no_native' module parameter cpuidle: menu: Update documentation after get_typical_interval() changes cpuidle: menu: Avoid discarding useful information cpuidle: menu: Eliminate outliers on both ends of the sample set cpuidle: menu: Tweak threshold use in get_typical_interval() cpuidle: menu: Use one loop for average and variance computations cpuidle: menu: Drop a redundant local variable intel_idle: clean up BYT/CHT auto demotion disable |
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Rafael J. Wysocki
|
1774be7cfc |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.15-rc1: - Manage sysfs attributes and boost frequencies efficiently from cpufreq core to reduce boilerplate code from drivers (Viresh Kumar). - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider, Dhananjay Ugwekar, Imran Shaik, and zuoqian). - Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky Bai). - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski). - Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng). - Optimize the amd-pstate driver to avoid cases where call paths end up calling the same writes multiple times and needlessly caching variables through code reorganization, locking overhaul and tracing adjustments (Mario Limonciello, Dhananjay Ugwekar). - Make it possible to avoid enabling capacity-aware scheduling (CAS) in the intel_pstate driver and relocate a check for out-of-band (OOB) platform handling in it to make it detect OOB before checking HWP availability (Rafael Wysocki). - Fix dbs_update() to avoid inadvertent conversions of negative integer values to unsigned int which causes CPU frequency selection to be inaccurate in some cases when the "conservative" cpufreq governor is in use (Jie Zhan). * pm-cpufreq: (91 commits) dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650 dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1 dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible cpufreq: Init cpufreq only for present CPUs cpufreq: tegra186: Share policy per cluster cpufreq/amd-pstate: Drop actions in amd_pstate_epp_cpu_offline() cpufreq/amd-pstate: Stop caching EPP cpufreq/amd-pstate: Rework CPPC enabling cpufreq/amd-pstate: Drop debug statements for policy setting cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes cpufreq/amd-pstate: Move all EPP tracing into *_update_perf and *_set_epp functions cpufreq/amd-pstate: Cache CPPC request in shared mem case too cpufreq/amd-pstate: Replace all AMD_CPPC_* macros with masks cpufreq/amd-pstate-ut: Adjust variable scope cpufreq/amd-pstate-ut: Run on all of the correct CPUs cpufreq/amd-pstate-ut: Drop SUCCESS and FAIL enums cpufreq/amd-pstate-ut: Allow lowest nonlinear and lowest to be the same cpufreq/amd-pstate-ut: Use _free macro to free put policy cpufreq/amd-pstate: Drop `cppc_cap1_cached` ... |
||
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Hao Jia
|
4c8bc7c4e3 |
cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
The commit |
||
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Hao Jia
|
e452872b40 |
mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
Patch series "Adding Proactive Memory Reclaim Statistics". These two patches are related to proactive memory reclaim. Patch 1 Split proactive reclaim statistics from direct reclaim counters and introduces new counters: pgsteal_proactive, pgdemote_proactive, and pgscan_proactive. Patch 2 Adds pswpin and pswpout items to the cgroup-v2 documentation. This patch (of 2): In proactive memory reclaim scenarios, it is necessary to accurately track proactive reclaim statistics to dynamically adjust the frequency and amount of memory being reclaimed proactively. Currently, proactive reclaim is included in direct reclaim statistics, which can make these direct reclaim statistics misleading. Therefore, separate proactive reclaim memory from the direct reclaim counters by introducing new counters: pgsteal_proactive, pgdemote_proactive, and pgscan_proactive, to avoid confusion with direct reclaim. Link: https://lkml.kernel.org/r/20250318075833.90615-1-jiahao.kernel@gmail.com Link: https://lkml.kernel.org/r/20250318075833.90615-2-jiahao.kernel@gmail.com Signed-off-by: Hao Jia <jiahao1@lixiang.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Donghyeok Choe
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c1aa3daa51 |
printk/panic: Add option to allow non-panic CPUs to write to the ring buffer.
Commit |
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Andrew Jones
|
9fe58530a8
|
Documentation/kernel-parameters: Add riscv unaligned speed parameters
Document riscv parameters used to select scalar and vector unaligned access speeds. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20250304120014.143628-18-ajones@ventanamicro.com Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> |
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Pawan Gupta
|
722fa0dba7 |
x86/rfds: Exclude P-only parts from the RFDS affected list
The affected CPU table (cpu_vuln_blacklist) marks Alderlake and Raptorlake P-only parts affected by RFDS. This is not true because only E-cores are affected by RFDS. With the current family/model matching it is not possible to differentiate the unaffected parts, as the affected and unaffected hybrid variants have the same model number. Add a cpu-type match as well for such parts so as to exclude P-only parts being marked as affected. Note, family/model and cpu-type enumeration could be inaccurate in virtualized environments. In a guest affected status is decided by RFDS_NO and RFDS_CLEAR bits exposed by VMMs. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/r/20250311-add-cpu-type-v8-5-e8514dcaaff2@linux.intel.com |
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Ingo Molnar
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89771319e0 |
Linux 6.14-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmfXVtUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGN/sH/i5423Gt/z51gDjA s4v5Z7GaBJ9zOGBahn2RWFe72zytTqKrEJmMnGfguirs0atD1DtQj4WAP7iFKP+e WyO663X6HF7i5y37ja0Yd4PZc31hwtqzKH8LjBf8f8tTy8UsEVqumdi5A4sS9KTM qm4kTyyVEY9D/s7oRY8ywjDlRJtO6nT0aKMp4kAqNEbrNUYbilT/a0hgXcgSmPyB uIjmjL2fZfutxGI5LgfbaSHCa1ElmhvTvivOMpaAmZSGCRVHCKGgT0CTNnHyn/7C dB145JkRO4ZOUqirCdO4PE/23id3ajq9fcixJGBzAv7c45y+B3JZ1r2kAfKalE8/ qrOKLys= =8r7a -----END PGP SIGNATURE----- Merge tag 'v6.14-rc7' into x86/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Johannes Weiner
|
e3aa7df331 |
mm: page_alloc: defrag_mode
The page allocator groups requests by migratetype to stave off
fragmentation. However, in practice this is routinely defeated by the
fact that it gives up *before* invoking reclaim and compaction - which may
well produce suitable pages. As a result, fragmentation of physical
memory is a common ongoing process in many load scenarios.
Fragmentation deteriorates compaction's ability to produce huge pages.
Depending on the lifetime of the fragmenting allocations, those effects
can be long-lasting or even permanent, requiring drastic measures like
forcible idle states or even reboots as the only reliable ways to recover
the address space for THP production.
In a kernel build test with supplemental THP pressure, the THP allocation
rate steadily declines over 15 runs:
thp_fault_alloc
61988
56474
57258
50187
52388
55409
52925
47648
43669
40621
36077
41721
36685
34641
33215
This is a hurdle in adopting THP in any environment where hosts are shared
between multiple overlapping workloads (cloud environments), and rarely
experience true idle periods. To make THP a reliable and predictable
optimization, there needs to be a stronger guarantee to avoid such
fragmentation.
Introduce defrag_mode. When enabled, reclaim/compaction is invoked to its
full extent *before* falling back. Specifically, ALLOC_NOFRAGMENT is
enforced on the allocator fastpath and the reclaiming slowpath.
For now, fallbacks are permitted to avert OOMs. There is a plan to add
defrag_mode=2 to prefer OOMs over fragmentation, but this requires
additional prep work in compaction and the reserve management to make it
ready for all possible allocation contexts.
The following test results are from a kernel build with periodic bursts of
THP allocations, over 15 runs:
vanilla defrag_mode=1
@claimer[unmovable]: 189 103
@claimer[movable]: 92 103
@claimer[reclaimable]: 207 61
@pollute[unmovable from movable]: 25 0
@pollute[unmovable from reclaimable]: 28 0
@pollute[movable from unmovable]: 38835 0
@pollute[movable from reclaimable]: 147136 0
@pollute[reclaimable from unmovable]: 178 0
@pollute[reclaimable from movable]: 33 0
@steal[unmovable from movable]: 11 0
@steal[unmovable from reclaimable]: 5 0
@steal[reclaimable from unmovable]: 107 0
@steal[reclaimable from movable]: 90 0
@steal[movable from reclaimable]: 354 0
@steal[movable from unmovable]: 130 0
Both types of polluting fallbacks are eliminated in this workload.
Interestingly, whole block conversions are reduced as well. This is
because once a block is claimed for a type, its empty space remains
available for future allocations, instead of being padded with fallbacks;
this allows the native type to group up instead of spreading out to new
blocks. The assumption in the allocator has been that pollution from
movable allocations is less harmful than from other types, since they can
be reclaimed or migrated out should the space be needed. However, since
fallbacks occur *before* reclaim/compaction is invoked, movable pollution
will still cause non-movable allocations to spread out and claim more
blocks.
Without fragmentation, THP rates hold steady with defrag_mode=1:
thp_fault_alloc
32478
20725
45045
32130
14018
21711
40791
29134
34458
45381
28305
17265
22584
28454
30850
While the downward trend is eliminated, the keen reader will of course
notice that the baseline rate is much smaller than the vanilla kernel's to
begin with. This is due to deficiencies in how reclaim and compaction are
currently driven: ALLOC_NOFRAGMENT increases the extent to which smaller
allocations are competing with THPs for pageblocks, while making no effort
themselves to reclaim or compact beyond their own request size. This
effect already exists with the current usage of ALLOC_NOFRAGMENT, but is
amplified by defrag_mode insisting on whole block stealing much more
strongly.
Subsequent patches will address defrag_mode reclaim strategy to raise the
THP success baseline above the vanilla kernel.
Link: https://lkml.kernel.org/r/20250313210647.1314586-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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SeongJae Park
|
114b480877 |
Docs/admin-guide/mm/damon/usage: update for {core,ops}_filters directories
Document {core,ops}_filters directories on usage document.
Link: https://lkml.kernel.org/r/20250305222733.59089-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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David Hildenbrand
|
749492229e |
mm: stop maintaining the per-page mapcount of large folios (CONFIG_NO_PAGE_MAPCOUNT)
Everything is in place to stop using the per-page mapcounts in large
folios: the mapcount of tail pages will always be logically 0 (-1 value),
just like it currently is for hugetlb folios already, and the page
mapcount of the head page is either 0 (-1 value) or contains a page type
(e.g., hugetlb).
Maintaining _nr_pages_mapped without per-page mapcounts is impossible, so
that one also has to go with CONFIG_NO_PAGE_MAPCOUNT.
There are two remaining implications:
(1) Per-node, per-cgroup and per-lruvec stats of "NR_ANON_MAPPED"
("mapped anonymous memory") and "NR_FILE_MAPPED"
("mapped file memory"):
As soon as any page of the folio is mapped -- folio_mapped() -- we
now account the complete folio as mapped. Once the last page is
unmapped -- !folio_mapped() -- we account the complete folio as
unmapped.
This implies that ...
* "AnonPages" and "Mapped" in /proc/meminfo and
/sys/devices/system/node/*/meminfo
* cgroup v2: "anon" and "file_mapped" in "memory.stat" and
"memory.numa_stat"
* cgroup v1: "rss" and "mapped_file" in "memory.stat" and
"memory.numa_stat
... can now appear higher than before. But note that these folios do
consume that memory, simply not all pages are actually currently
mapped.
It's worth nothing that other accounting in the kernel (esp. cgroup
charging on allocation) is not affected by this change.
[why oh why is "anon" called "rss" in cgroup v1]
(2) Detecting partial mappings
Detecting whether anon THPs are partially mapped gets a bit more
unreliable. As long as a single MM maps such a large folio
("exclusively mapped"), we can reliably detect it. Especially before
fork() / after a short-lived child process quit, we will detect
partial mappings reliably, which is the common case.
In essence, if the average per-page mapcount in an anon THP is < 1,
we know for sure that we have a partial mapping.
However, as soon as multiple MMs are involved, we might miss detecting
partial mappings: this might be relevant with long-lived child
processes. If we have a fully-mapped anon folio before fork(), once
our child processes and our parent all unmap (zap/COW) the same pages
(but not the complete folio), we might not detect the partial mapping.
However, once the child processes quit we would detect the partial
mapping.
How relevant this case is in practice remains to be seen.
Swapout/migration will likely mitigate this.
In the future, RMAP walkers could check for that for that case
(e.g., when collecting access bits during reclaim) and simply flag
them for deferred-splitting.
Link: https://lkml.kernel.org/r/20250303163014.1128035-21-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andy Lutomirks^H^Hski <luto@kernel.org>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: Michal Koutn <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: tejun heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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David Hildenbrand
|
eb16876971 |
fs/proc/task_mmu: remove per-page mapcount dependency for PM_MMAP_EXCLUSIVE (CONFIG_NO_PAGE_MAPCOUNT)
Let's implement an alternative when per-page mapcounts in large folios are no longer maintained -- soon with CONFIG_NO_PAGE_MAPCOUNT. PM_MMAP_EXCLUSIVE will now be set if folio_likely_mapped_shared() is true -- when the folio is considered "mapped shared", including when it once was "mapped shared" but no longer is, as documented. This might result in and under-indication of "exclusively mapped", which is considered better than over-indicating it: under-estimating the USS (Unique Set Size) is better than over-estimating it. As an alternative, we could simply remove that flag with CONFIG_NO_PAGE_MAPCOUNT completely, but there might be value to it. So, let's keep it like that and document the behavior. Link: https://lkml.kernel.org/r/20250303163014.1128035-18-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Andy Lutomirks^H^Hski <luto@kernel.org> Cc: Borislav Betkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: Michal Koutn <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: tejun heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Hildenbrand
|
ae4192b769 |
fs/proc/page: remove per-page mapcount dependency for /proc/kpagecount (CONFIG_NO_PAGE_MAPCOUNT)
Let's implement an alternative when per-page mapcounts in large folios are no longer maintained -- soon with CONFIG_NO_PAGE_MAPCOUNT. For large folios, we'll return the per-page average mapcount within the folio, whereby we round to the closest integer when calculating the average: however, we'll always return at least 1 if the folio is mapped. So assuming a folio with 512 pages, the average would be: * 0 if not pages are mapped * 1 if there are 1 .. 767 per-page mappings * 2 if there are 767 .. 1279 per-page mappings ... For hugetlb folios and for large folios that are fully mapped into all address spaces, there is no change. We'll make use of this helper in other context next. As an alternative, we could simply return 0 for non-hugetlb large folios, or disable this legacy interface with CONFIG_NO_PAGE_MAPCOUNT. But the information exposed by this interface can still be valuable, and frequently we deal with fully-mapped large folios where the average corresponds to the actual page mapcount. So we'll leave it like this for now and document the new behavior. Note: this interface is likely not very relevant for performance. If ever required, we could try doing a rather expensive rmap walk to collect precisely how often this folio page is mapped. Link: https://lkml.kernel.org/r/20250303163014.1128035-17-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Andy Lutomirks^H^Hski <luto@kernel.org> Cc: Borislav Betkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: Michal Koutn <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: tejun heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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kth
|
fba374f328 |
docs: Remove outdated highuid.rst documentation
The highuid.rst document describes a transition that is outdated and no longer relevant. Additionally, it references filesystems (ncpfs and smbfs), which have been removed or replaced. Suggested-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Kang Taeho <kangtaeho2456@gmail.com> Link: https://lore.kernel.org/r/20250313145650.278346-1-kangtaeho2456@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Adam Simonelli
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2f1f7787b6 |
printk: Add an option to allow ttynull to be a default console device
The new option is CONFIG_NULL_TTY_DEFAULT_CONSOLE. if enabled, and CONFIG_VT is disabled, ttynull will become the default primary console device. ttynull will be the only console device usually with this option enabled. Some architectures do call add_preferred_console() which may add another console though. Motivation: Many distributions ship with CONFIG_VT enabled. On tested desktop hardware if CONFIG_VT is disabled, the default console device falls back to /dev/ttyS0 instead of /dev/tty. This could cause issues in user space, and hardware problems: 1. The user space issues include the case where /dev/ttyS0 is disconnected, and the TCGETS ioctl, which some user space libraries use as a probe to determine if a file is a tty, is called on /dev/console and fails. Programs that call isatty() on /dev/console and get an incorrect false value may skip expected logging to /dev/console. 2. The hardware issues include the case if a user has a science instrument or other device connected to the /dev/ttyS0 port, and they were to upgrade to a kernel that is disabling the CONFIG_VT option, kernel logs will then be sent to the device connected to /dev/ttyS0 unless they edit their kernel command line manually. The new CONFIG_NULL_TTY_DEFAULT_CONSOLE option will give users and distribution maintainers an option to avoid this. Disabling CONFIG_VT and enabling CONFIG_NULL_TTY_DEFAULT_CONSOLE will ensure the default kernel console behavior is not dependent on hardware configuration by default, and avoid unexpected new behavior on devices connected to the /dev/ttyS0 serial port. Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Adam Simonelli <adamsimonelli@gmail.com> Link: https://lore.kernel.org/r/20250314160749.3286153-2-adamsimonelli@gmail.com [pmladek@suse.com: Fixed indentation of the commit message.] Signed-off-by: Petr Mladek <pmladek@suse.com> |
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Thomas Prescher
|
71f7456889 |
mm: hugetlb: add hugetlb_alloc_threads cmdline option
Add a command line option that enables control of how many threads should be used to allocate huge pages. [akpm@linux-foundation.org: tidy up a comment] Link: https://lkml.kernel.org/r/20250227-hugepage-parameter-v2-2-7db8c6dc0453@cyberus-technology.de Signed-off-by: Thomas Prescher <thomas.prescher@cyberus-technology.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
b243d666d1 |
Docs/admin-guide/mm/damon/usage: add intervals_goal directory on the hierarchy
Document DAMON sysfs interface usage for DAMON sampling and aggregation intervals auto-tuning. Link: https://lkml.kernel.org/r/20250303221726.484227-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ahmad Fatoum
|
e016173f65 |
reboot: add support for configuring emergency hardware protection action
We currently leave the decision of whether to shutdown or reboot to protect hardware in an emergency situation to the individual drivers. This works out in some cases, where the driver detecting the critical failure has inside knowledge: It binds to the system management controller for example or is guided by hardware description that defines what to do. In the general case, however, the driver detecting the issue can't know what the appropriate course of action is and shouldn't be dictating the policy of dealing with it. Therefore, add a global hw_protection toggle that allows the user to specify whether shutdown or reboot should be the default action when the driver doesn't set policy. This introduces no functional change yet as hw_protection_trigger() has no callers, but these will be added in subsequent commits. [arnd@arndb.de: hide unused hw_protection_attr] Link: https://lkml.kernel.org/r/20250224141849.1546019-1-arnd@kernel.org Link: https://lkml.kernel.org/r/20250217-hw_protection-reboot-v3-7-e1c09b090c0c@pengutronix.de Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Cc: Benson Leung <bleung@chromium.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Fabio Estevam <festevam@denx.de> Cc: Guenter Roeck <groeck@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Lukasz Luba <lukasz.luba@arm.com> Cc: Mark Brown <broonie@kernel.org> Cc: Matteo Croce <teknoraver@meta.com> Cc: Matti Vaittinen <mazziesaccount@gmail.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Rob Herring (Arm) <robh@kernel.org> Cc: Rui Zhang <rui.zhang@intel.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: "Serge E. Hallyn" <serge@hallyn.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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8e2f2aeb8b |
fs/proc/task_mmu: add guard region bit to pagemap
Patch series "fs/proc/task_mmu: add guard region bit to pagemap". Currently there is no means of determining whether a given page in a mapping range is designated a guard region (as installed via madvise() using the MADV_GUARD_INSTALL flag). This is generally not an issue, but in some instances users may wish to determine whether this is the case. This series adds this ability via /proc/$pid/pagemap, updates the documentation and adds a self test to assert that this functions correctly. This patch (of 2): Currently there is no means by which users can determine whether a given page in memory is in fact a guard region, that is having had the MADV_GUARD_INSTALL madvise() flag applied to it. This is intentional, as to provide this information in VMA metadata would contradict the intent of the feature (providing a means to change fault behaviour at a page table level rather than a VMA level), and would require VMA metadata operations to scan page tables, which is unacceptable. In many cases, users have no need to reflect and determine what regions have been designated guard regions, as it is the user who has established them in the first place. But in some instances, such as monitoring software, or software that relies upon being able to ascertain the nature of mappings within a remote process for instance, it becomes useful to be able to determine which pages have the guard region marker applied. This patch makes use of an unused pagemap bit (58) to provide this information. This patch updates the documentation at the same time as making the change such that the implementation of the feature and the documentation of it are tied together. Link: https://lkml.kernel.org/r/cover.1740139449.git.lorenzo.stoakes@oracle.com Link: https://lkml.kernel.org/r/521d99c08b975fb06a1e7201e971cc24d68196d1.1740139449.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
|
4127e13c93 |
zram: remove max_comp_streams device attr
max_comp_streams device attribute has been defunct since May 2016 when zram switched to per-CPU compression streams, remove it. Link: https://lkml.kernel.org/r/20250303022425.285971-5-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Hillf Danton <hdanton@sina.com> Cc: Kairui Song <ryncsn@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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f866cfcec2 |
mm/hugetlb: add hugetlb_cma_only cmdline option
Add an option to force hugetlb gigantic pages to be allocated using CMA only (if hugetlb_cma is enabled). This avoids a fallback to allocation from the rest of system memory if the CMA allocation fails. This makes the size of hugetlb_cma a hard upper boundary for gigantic hugetlb page allocations. This is useful because, with a large CMA area, the kernel's unmovable allocations will have less room to work with and it is undesirable for new hugetlb gigantic page allocations to be done from that remaining area. It will eat in to the space available for unmovable allocations, leading to unwanted system behavior (OOMs because the kernel fails to do unmovable allocations). So, with this enabled, an administrator can force a hard upper bound for runtime gigantic page allocations, and have more predictable system behavior. Link: https://lkml.kernel.org/r/20250228182928.2645936-26-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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5b47c02967 |
mm/hugetlb: convert cmdline parameters from setup to early
Convert the cmdline parameters (hugepagesz, hugepages, default_hugepagesz and hugetlb_free_vmemmap) to early parameters. Since parse_early_param might run before MMU setups on some platforms (powerpc), validation of huge page sizes as specified in command line parameters would fail. So instead, for the hstate-related values, just record the them and parse them on demand, from hugetlb_bootmem_alloc. The allocation of hugetlb bootmem pages is now done in hugetlb_bootmem_alloc, which is called explicitly at the start of mm_core_init(). core_initcall would be too late, as that happens with memblock already torn down. This change will allow earlier allocation and initialization of bootmem hugetlb pages later on. No functional change intended. Link: https://lkml.kernel.org/r/20250228182928.2645936-8-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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c009da4258 |
mm, cma: support multiple contiguous ranges, if requested
Currently, CMA manages one range of physically contiguous memory. Creation of larger CMA areas with hugetlb_cma may run in to gaps in physical memory, so that they are not able to allocate that contiguous physical range from memblock when creating the CMA area. This can happen, for example, on an AMD system with > 1TB of memory, where there will be a gap just below the 1TB (40bit DMA) line. If you have set aside most of memory for potential hugetlb CMA allocation, cma_declare_contiguous_nid will fail. hugetlb_cma doesn't need the entire area to be one physically contiguous range. It just cares about being able to get physically contiguous chunks of a certain size (e.g. 1G), and it is fine to have the CMA area backed by multiple physical ranges, as long as it gets 1G contiguous allocations. Multi-range support is implemented by introducing an array of ranges, instead of just one big one. Each range has its own bitmap. Effectively, the allocate and release operations work as before, just per-range. So, instead of going through one large bitmap, they now go through a number of smaller ones. The maximum number of supported ranges is 8, as defined in CMA_MAX_RANGES. Since some current users of CMA expect a CMA area to just use one physically contiguous range, only allow for multiple ranges if a new interface, cma_declare_contiguous_nid_multi, is used. The other interfaces will work like before, creating only CMA areas with 1 range. cma_declare_contiguous_nid_multi works as follows, mimicking the default "bottom-up, above 4G" reservation approach: 0) Try cma_declare_contiguous_nid, which will use only one region. If this succeeds, return. This makes sure that for all the cases that currently work, the behavior remains unchanged even if the caller switches from cma_declare_contiguous_nid to cma_declare_contiguous_nid_multi. 1) Select the largest free memblock ranges above 4G, with a maximum number of CMA_MAX_RANGES. 2) If we did not find at most CMA_MAX_RANGES that add up to the total size requested, return -ENOMEM. 3) Sort the selected ranges by base address. 4) Reserve them bottom-up until we get what we wanted. Link: https://lkml.kernel.org/r/20250228182928.2645936-3-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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0f28583b28 |
Docs/damon: move DAMOS filter type names and meaning to design doc
DAMON sysfs usage doc is describing DAMOS filter type names and their meanings in short. The design doc is providing the short meaning and detailed descriptions, too. This is unnecessary duplicates and confuses where to document new DAMOS filter types and features. Move the details from usage to design doc. Link: https://lkml.kernel.org/r/20250218223708.53437-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Usama Arif
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4ddb209268 |
Docs/admin-guide/mm/damon/usage: document hugepage_size filter type
This includes both the 'hugepage_size' filter type and the min/max files used to decide range of sizes to filter on. Link: https://lkml.kernel.org/r/20250211124437.278873-5-usamaarif642@gmail.com Signed-off-by: Usama Arif <usamaarif642@gmail.com> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Yosry Ahmed
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6df8bae8e8 |
mm: zbud: remove zbud
The zbud compressed pages allocator is rarely used, most users use zsmalloc. zbud consumes much more memory (only stores 1 or 2 compressed pages per physical page). The only advantage of zbud is a marginal performance improvement that by no means justify the memory overhead. Historically, zsmalloc had significantly worse latency than zbud and z3fold but offered better memory savings. This is no longer the case as shown by a simple recent analysis [1]. In a kernel build test on tmpfs in a limited cgroup, zbud 2-3% less time than zsmalloc, but at the cost of using ~32% more memory (1.5G vs 1.13G). The tradeoff does not make sense for zbud in any practical scenario. The only alleged advantage of zbud is not having the dependency on CONFIG_MMU, but CONFIG_SWAP already depends on CONFIG_MMU anyway, and zbud is only used by zswap. Remove zbud after z3fold's removal, leaving zsmalloc as the one and only zpool allocator. Leave the removal of the zpool API (and its associated config options) to a followup cleanup after no more allocators show up. Deprecating zbud for a few cycles before removing it was initially proposed [2], like z3fold was marked as deprecated for 2 cycles [3]. However, Johannes rightfully pointed out that the 2 cycles is too short for most downstream consumers, and z3fold was deprecated first only as a courtesy anyway. [1]https://lore.kernel.org/lkml/CAJD7tkbRF6od-2x_L8-A1QL3=2Ww13sCj4S3i4bNndqF+3+_Vg@mail.gmail.com/ [2]https://lore.kernel.org/lkml/Z5gdnSX5Lv-nfjQL@google.com/ [3]https://lore.kernel.org/lkml/20240904233343.933462-1-yosryahmed@google.com/ Link: https://lkml.kernel.org/r/20250129180633.3501650-3-yosry.ahmed@linux.dev Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Seth Jennings <sjenning@redhat.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: WANG Xuerui <kernel@xen0n.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baokun Li
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62c3da1eac |
ext4: update the descriptions of data_err=abort and data_err=ignore
We now print error messages in ext4_end_bio() when page writeback encounters an error. If data_err=abort is set, the journal will also be aborted in a kworker. This means that we now check all Buffer I/O in all modes and decide whether to abort the journal based on the data_err option. Therefore, we remove the ordered mode restriction in the descriptions of data_err=abort and data_err=ignore. Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20250122110533.4116662-8-libaokun@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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I Hsin Cheng
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e5e6c016fc |
docs: Correct installation instruction
Ammend missing "install" operation keyword after "apt-get", and fix "build-essentials" to "build-essential". Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250306030708.8133-1-richard120310@gmail.com |
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Dr. David Alan Gilbert
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270247a209 |
PNP: Remove prehistoric deadcode
pnp_remove_card() is currently unused, it has been since it was added in 2003's BKrev: 3e6d3f19XSmESWEZnNEReEJOJW5SOw pnp_unregister_protocol() is currently unused, it has been since it was added in 2002's BKrev: 3df0cf6d4FVUKndhbfxjL7pksw5PGA Remove them, and pnp_remove_card_device() and __pnp_remove_device() which are now no longer used. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Link: https://patch.msgid.link/20250307214936.74504-1-linux@treblig.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Michal Koutný
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78f6519ed0 |
cgroup: Add deprecation message to legacy freezer controller
As explained in the commit
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Michal Koutný
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fd4fd0a869 |
mm: Add transformation message for per-memcg swappiness
The concept of per-memcg swappiness has never landed well in memcg for cgroup v2. Add a message to users who use it on v1 hierarchy. Decreased swappiness transforms to memory.swap.max=0 whereas increased swappiness transforms into active memory.reclaim operation. Link: https://lore.kernel.org/r/1577252208-32419-1-git-send-email-teawater@gmail.com/ Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
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9712d38c87 |
Kbuild fixes for v6.14 (3rd)
- Use the specified $(LD) when building userprogs with Clang
- Pass the correct target triple when compile-testing UAPI headers
with Clang
- Fix pacman-pkg build error with KBUILD_OUTPUT
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Merge tag 'kbuild-fixes-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Use the specified $(LD) when building userprogs with Clang
- Pass the correct target triple when compile-testing UAPI headers
with Clang
- Fix pacman-pkg build error with KBUILD_OUTPUT
* tag 'kbuild-fixes-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: install-extmod-build: Fix build when specifying KBUILD_OUTPUT
docs: Kconfig: fix defconfig description
kbuild: hdrcheck: fix cross build with clang
kbuild: userprogs: use correct lld when linking through clang
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Jason Gunthorpe
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8eea4e7447 |
taint: Add TAINT_FWCTL
Requesting a fwctl scope of access that includes mutating device debug data will cause the kernel to be tainted. Changing the device operation through things in the debug scope may cause the device to malfunction in undefined ways. This should be reflected in the TAINT flags to help any debuggers understand that something has been done. Link: https://patch.msgid.link/r/4-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Shannon Nelson <shannon.nelson@amd.com> Tested-by: Dave Jiang <dave.jiang@intel.com> Tested-by: Shannon Nelson <shannon.nelson@amd.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |