mirror of
https://github.com/torvalds/linux.git
synced 2026-10-16 21:00:02 +02:00
master
9415 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Christophe Leroy
|
382094a41c |
powerpc: Fix 'intra_function_call not a direct call' warning
The following build warning have been reported: arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0xe84: intra_function_call not a direct call arch/powerpc/kernel/switch.o: warning: objtool: .text+0x4: intra_function_call not a direct call This happens due to commit |
||
|
Andreas Schwab
|
7e67ef889c |
powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7
Similar to the PowerMac3,1, the PowerBook6,7 is missing the #size-cells
property on the i2s node.
Depends-on: commit
|
||
|
Michael Ellerman
|
b78e0bff85 |
powerpc: Remove UDBG_RTAS_CONSOLE
The IBM Cell blade support was the last user of UDBG_RTAS_CONSOLE. Although it's still possible to build it via PPC_EARLY_DEBUG_UDBG_RTAS_CONSOLE, AFAIK it's not useful on any other platfoms, because only Cell and JS20 era machines provided the RTAS get/put-term-char functions. If anyone is using it or needs it we can always resurrect it from git. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-19-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
1b52e091e7 |
powerpc/io: Use standard barrier macros in io.c
io.c uses open-coded barriers. Update it to use the equivalent but in macro form. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-18-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
76c7d4300d |
powerpc/io: Rename _insw_ns() etc.
The "_ns" suffix was "historical" in 2006, finally remove it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-17-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
6584845b3d |
powerpc/io: Remove PPC_INDIRECT_MMIO
The Cell blade support was the last user of PPC_INDIRECT_MMIO, so it can now be removed. PPC_INDIRECT_PIO is still used by Power8 powernv, so it needs to remain. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-10-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
478e1709ad |
powerpc/io: Remove PPC_IO_WORKAROUNDS
The Cell blade support was the last user of PPC_IO_WORKAROUNDS, so they can now be removed. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-9-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
f026dffd54 |
powerpc: Remove PPC_OF_PLATFORM_PCI
The Cell blade support was the last user of PPC_OF_PLATFORM_PCI, so remove it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-8-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
8e4f1a3495 |
powerpc: Remove some Cell leftovers
Now that CONFIG_PPC_CELL_NATIVE is removed, iommu_fixed_is_weak will always be false, so remove it entirely. Also remove a hack/quirk in the HTAB code that was only used on Cell. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-2-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
05bf59fbee |
powerpc/cell: Remove support for IBM Cell Blades
IBM Cell Blades used the Cell processor and the "blade" server form factor. They were sold as models QS20, QS21 & QS22 from roughly 2006 to 2012 [1]. They were used in a few supercomputers (eg. Roadrunner) that have since been dismantled, and were not that widely used otherwise. Until recently I still had a working QS22, which meant I was able to keep the platform support working, but unfortunately that machine has now died. I'm not aware of any users. If there is a user that wants to keep the upstream support working, we can look at bringing some of the code back as appropriate. See previous discussion at [2]. Remove the top-level config symbol PPC_IBM_CELL_BLADE, and then the dependent symbols PPC_CELL_NATIVE, PPC_CELL_COMMON, CBE_RAS, PPC_IBM_CELL_RESETBUTTON, PPC_IBM_CELL_POWERBUTTON, CBE_THERM, and AXON_MSI. Then remove the associated C files and headers, and trim unused header content (some is shared with PS3). Note that PPC_CELL_COMMON sounds like it would build code shared with PS3, but it does not. It's a relic from when code was shared between the Blade support and QPACE support. Most of the primary authors already have CREDITS entries, with the exception of Christian, so add one for him. [1]: https://www.theregister.com/2011/06/28/ibm_kills_qs22_blade [2]: https://lore.kernel.org/linuxppc-dev/60581044-df82-40ad-b94c-56468007a93e@app.fastmail.com Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-1-mpe@ellerman.id.au |
||
|
Christophe Leroy
|
f50b45626e |
powerpc/static_call: Implement inline static calls
Implement inline static calls:
- Put a 'bl' to the destination function ('b' if tail call)
- Put a 'nop' when the destination function is NULL ('blr' if tail call)
- Put a 'li r3,0' when the destination is the RET0 function and not
a tail call.
If the destination is too far (over the 32Mb limit), go via the
trampoline.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/3dbd0b2ba577c942729235d0211d04a406653d81.1733245362.git.christophe.leroy@csgroup.eu
|
||
|
Christophe Leroy
|
6626f98ed5 |
powerpc: Prepare arch_static_call_transform() for supporting inline static calls
Reorganise arch_static_call_transform() in order to ease the support of inline static calls in following patch: - remove 'target' to nhide whether it is a 'return 0' or not. - Don't bail out if 'tramp' is NULL, just do nothing until next patch. Note that 'target' was 'tramp + PPC_SCT_RET0', is_short was perforce true. So in the 'if (func && !is_short)' leg, target was perforce equal to 'func'. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/7a8b9245e773307c315c2548a4c6cad570ac2648.1733245362.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
f17bcb97ed |
powerpc/time: Define div128_by_32() static and __init
div128_by_32() used to be called from outside time.c in the old days but since v2.6.15 it hasn't been used outside time.c $ git grep div128_by_32 v2.6.14 v2.6.14:arch/ppc64/kernel/iSeries_setup.c: div128_by_32(1024 * 1024, 0, tb_ticks_per_sec, &divres); v2.6.14:arch/ppc64/kernel/pmac_time.c: div128_by_32( 1024*1024, 0, tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32( XSEC_PER_SEC, 0, tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32(1024*1024, 0, tb_ticks_per_sec, &divres); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32(1000000000, 0, tb_ticks_per_sec, &res); v2.6.14:arch/ppc64/kernel/time.c: div128_by_32( 1024*1024, 0, new_tb_ticks_per_sec, &divres ); v2.6.14:arch/ppc64/kernel/time.c:void div128_by_32( unsigned long dividend_high, unsigned long dividend_low, v2.6.14:include/asm-ppc64/time.h:void div128_by_32( unsigned long dividend_high, unsigned long dividend_low, $ git grep div128_by_32 v2.6.15 v2.6.15:arch/powerpc/kernel/time.c: div128_by_32( XSEC_PER_SEC, 0, tb_ticks_per_sec, &divres ); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1024*1024, 0, tb_ticks_per_sec, &res); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1000000000, 0, tb_ticks_per_sec, &res); v2.6.15:arch/powerpc/kernel/time.c: div128_by_32(1024*1024, 0, new_tb_ticks_per_sec, &divres); v2.6.15:arch/powerpc/kernel/time.c:void div128_by_32(u64 dividend_high, u64 dividend_low, v2.6.15:include/asm-powerpc/time.h:extern void div128_by_32(u64 dividend_high, u64 dividend_low, Move it above its only caller which is time_init() and define it static and __init. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/50810349bf1eee378fbeab72a36e4b6553a60c3d.1738749246.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
2c1cbbab62 |
powerpc/vmlinux: Remove etext, edata and end
etext is not used anymore since commit
|
||
|
Thomas Weißschuh
|
223970df2b |
powerpc/vdso: Switch to generic storage implementation
The generic storage implementation provides the same features as the custom one. However it can be shared between architectures, making maintenance easier. Co-developed-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-14-13a4669dfc8c@linutronix.de |
||
|
Thomas Weißschuh
|
127b0e05c1 |
vdso: Rename included Makefile
As the Makefile is included into other Makefiles it can not be used to define objects to be built from the current source directory. However the generic datastore will introduce such a local source file. Rename the included Makefile so it is clear how it is to be used and to make room for a regular Makefile in lib/vdso/. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-4-13a4669dfc8c@linutronix.de |
||
|
Thomas Weißschuh
|
982d13db10 |
powerpc/secvar: Constify 'struct bin_attribute'
The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20241216-sysfs-const-bin_attr-powerpc-v1-2-bbed8906f476@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Thomas Weißschuh
|
10f10210f6 |
powerpc/secvar: Mark __init functions as such
The setup functions are only called during the init phase of the kernel. They can be discarded and their memory reused after that. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20241216-sysfs-const-bin_attr-powerpc-v1-1-bbed8906f476@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Nam Cao
|
d1f0d81b36 |
powerpc/watchdog: Switch to use hrtimer_setup()
hrtimer_setup() takes the callback function pointer as argument and initializes the timer completely. Replace hrtimer_init() and the open coded initialization of hrtimer::function with the new setup mechanism. Patch was created by using Coccinelle. Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/099ebf6d352094a56e22fdfe76582b50f8fd6029.1738746821.git.namcao@linutronix.de |
||
|
Christian Brauner
|
c4a16820d9
|
fs: add open_tree_attr()
Add open_tree_attr() which allow to atomically create a detached mount tree and set mount options on it. If OPEN_TREE_CLONE is used this will allow the creation of a detached mount with a new set of mount options without it ever being exposed to userspace without that set of mount options applied. Link: https://lore.kernel.org/r/20250128-work-mnt_idmap-update-v2-v1-3-c25feb0d2eb3@kernel.org Reviewed-by: "Seth Forshee (DigitalOcean)" <sforshee@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Sourabh Jain
|
b7bb460624 |
powerpc/fadump: fix additional param memory reservation for HASH MMU
Commit
|
||
|
Sourabh Jain
|
0bdd7ff5b8 |
powerpc: export MIN RMA size
Commit
|
||
|
Akihiko Odaki
|
609c8b3091 |
powerpc/crash: Use note name macros
Use note name macros to match with the userspace's expectation. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Acked-by: Baoquan He <bhe@redhat.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://lore.kernel.org/r/20250115-elf-v5-3-0f9e55bbb2fc@daynix.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Oleg Nesterov
|
1027cd8084 |
seccomp: remove the 'sd' argument from __secure_computing()
After the previous changes 'sd' is always NULL. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250128150313.GA15336@redhat.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
fd8c09ad0d |
Kbuild updates for v6.14
- Support multiple hook locations for maint scripts of Debian package
- Remove 'cpio' from the build tool requirement
- Introduce gendwarfksyms tool, which computes CRCs for export symbols
based on the DWARF information
- Support CONFIG_MODVERSIONS for Rust
- Resolve all conflicts in the genksyms parser
- Fix several syntax errors in genksyms
-----BEGIN PGP SIGNATURE-----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=D553
-----END PGP SIGNATURE-----
Merge tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Support multiple hook locations for maint scripts of Debian package
- Remove 'cpio' from the build tool requirement
- Introduce gendwarfksyms tool, which computes CRCs for export symbols
based on the DWARF information
- Support CONFIG_MODVERSIONS for Rust
- Resolve all conflicts in the genksyms parser
- Fix several syntax errors in genksyms
* tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (64 commits)
kbuild: fix Clang LTO with CONFIG_OBJTOOL=n
kbuild: Strip runtime const RELA sections correctly
kconfig: fix memory leak in sym_warn_unmet_dep()
kconfig: fix file name in warnings when loading KCONFIG_DEFCONFIG_LIST
genksyms: fix syntax error for attribute before init-declarator
genksyms: fix syntax error for builtin (u)int*x*_t types
genksyms: fix syntax error for attribute after 'union'
genksyms: fix syntax error for attribute after 'struct'
genksyms: fix syntax error for attribute after abstact_declarator
genksyms: fix syntax error for attribute before nested_declarator
genksyms: fix syntax error for attribute before abstract_declarator
genksyms: decouple ATTRIBUTE_PHRASE from type-qualifier
genksyms: record attributes consistently for init-declarator
genksyms: restrict direct-declarator to take one parameter-type-list
genksyms: restrict direct-abstract-declarator to take one parameter-type-list
genksyms: remove Makefile hack
genksyms: fix last 3 shift/reduce conflicts
genksyms: fix 6 shift/reduce conflicts and 5 reduce/reduce conflicts
genksyms: reduce type_qualifier directly to decl_specifier
genksyms: rename cvar_qualifier to type_qualifier
...
|
||
|
Joel Granados
|
1751f872cc |
treewide: const qualify ctl_tables where applicable
Add the const qualifier to all the ctl_tables in the tree except for
watchdog_hardlockup_sysctl, memory_allocation_profiling_sysctls,
loadpin_sysctl_table and the ones calling register_net_sysctl (./net,
drivers/inifiniband dirs). These are special cases as they use a
registration function with a non-const qualified ctl_table argument or
modify the arrays before passing them on to the registration function.
Constifying ctl_table structs will prevent the modification of
proc_handler function pointers as the arrays would reside in .rodata.
This is made possible after commit
|
||
|
Linus Torvalds
|
9c5968db9e |
The various patchsets are summarized below. Plus of course many
indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec. - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones. - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest. - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code. - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups. - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code. - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c. - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator. - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading. - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated (https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/). Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED). - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled. - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL. - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests. - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size. - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic. - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated. - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated. - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed. - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic. - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy. - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic. - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions. - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed. - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting. - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface. - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior. - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi "introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors." - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram. - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal. - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance. - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation. - "Cleanup for memfd_create()" from Isaac Manjarres does that thing. - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration. - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices. - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ5a+cwAKCRDdBJ7gKXxA jtoyAP9R58oaOKPJuTizEKKXvh/RpMyD6sYcz/uPpnf+cKTZxQEAqfVznfWlw/Lz uC3KRZYhmd5YrxU4o+qjbzp9XWX/xAE= =Ib2s -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "The various patchsets are summarized below. Plus of course many indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated: https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/ Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED) - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation - "Cleanup for memfd_create()" from Isaac Manjarres does that thing - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests" * tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits) mm/compaction: fix UBSAN shift-out-of-bounds warning s390/mm: add missing ctor/dtor on page table upgrade kasan: sw_tags: use str_on_off() helper in kasan_init_sw_tags() tools: add VM_WARN_ON_VMG definition mm/damon/core: use str_high_low() helper in damos_wmark_wait_us() seqlock: add missing parameter documentation for raw_seqcount_try_begin() mm/page-writeback: consolidate wb_thresh bumping logic into __wb_calc_thresh mm/page_alloc: remove the incorrect and misleading comment zram: remove zcomp_stream_put() from write_incompressible_page() mm: separate move/undo parts from migrate_pages_batch() mm/kfence: use str_write_read() helper in get_access_type() selftests/mm/mkdirty: fix memory leak in test_uffdio_copy() kasan: hw_tags: Use str_on_off() helper in kasan_init_hw_tags() selftests/mm: virtual_address_range: avoid reading from VM_IO mappings selftests/mm: vm_util: split up /proc/self/smaps parsing selftests/mm: virtual_address_range: unmap chunks after validation selftests/mm: virtual_address_range: mmap() without PROT_WRITE selftests/memfd/memfd_test: fix possible NULL pointer dereference mm: add FGP_DONTCACHE folio creation flag mm: call filemap_fdatawrite_range_kick() after IOCB_DONTCACHE issue ... |
||
|
Guo Weikang
|
c6f239796b |
mm/memblock: add memblock_alloc_or_panic interface
Before SLUB initialization, various subsystems used memblock_alloc to allocate memory. In most cases, when memory allocation fails, an immediate panic is required. To simplify this behavior and reduce repetitive checks, introduce `memblock_alloc_or_panic`. This function ensures that memory allocation failures result in a panic automatically, improving code readability and consistency across subsystems that require this behavior. [guoweikang.kernel@gmail.com: arch/s390: save_area_alloc default failure behavior changed to panic] Link: https://lkml.kernel.org/r/20250109033136.2845676-1-guoweikang.kernel@gmail.com Link: https://lore.kernel.org/lkml/Z2fknmnNtiZbCc7x@kernel.org/ Link: https://lkml.kernel.org/r/20250102072528.650926-1-guoweikang.kernel@gmail.com Signed-off-by: Guo Weikang <guoweikang.kernel@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
2e04247f7c |
ftrace updates for v6.14:
- Have fprobes built on top of function graph infrastructure The fprobe logic is an optimized kprobe that uses ftrace to attach to functions when a probe is needed at the start or end of the function. The fprobe and kretprobe logic implements a similar method as the function graph tracer to trace the end of the function. That is to hijack the return address and jump to a trampoline to do the trace when the function exits. To do this, a shadow stack needs to be created to store the original return address. Fprobes and function graph do this slightly differently. Fprobes (and kretprobes) has slots per callsite that are reserved to save the return address. This is fine when just a few points are traced. But users of fprobes, such as BPF programs, are starting to add many more locations, and this method does not scale. The function graph tracer was created to trace all functions in the kernel. In order to do this, when function graph tracing is started, every task gets its own shadow stack to hold the return address that is going to be traced. The function graph tracer has been updated to allow multiple users to use its infrastructure. Now have fprobes be one of those users. This will also allow for the fprobe and kretprobe methods to trace the return address to become obsolete. With new technologies like CFI that need to know about these methods of hijacking the return address, going toward a solution that has only one method of doing this will make the kernel less complex. - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Remove disabling of interrupts in the function graph tracer When function graph tracer was first introduced, it could race with interrupts and NMIs. To prevent that race, it would disable interrupts and not trace NMIs. But the code has changed to allow NMIs and also interrupts. This change was done a long time ago, but the disabling of interrupts was never removed. Remove the disabling of interrupts in the function graph tracer is it is not needed. This greatly improves its performance. - Allow the :mod: command to enable tracing module functions on the kernel command line. The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Because enabling function tracing can be done very early at boot up (before scheduling is enabled), the commands that can be done when function tracing is started is limited. Having the ":mod:" command to trace module functions as they are loaded is very useful. Update the kernel command line function filtering to allow it. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ42E2RQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qqXSAPwOMxuhye8tb1GYG62QD9+w7e6nOmlC 2GCPj4detnEM2QD/ciivkhespVKhHpZHRewAuSnJgHPSM45NQ3EVESzjWQ4= =snbx -----END PGP SIGNATURE----- Merge tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ftrace updates from Steven Rostedt: - Have fprobes built on top of function graph infrastructure The fprobe logic is an optimized kprobe that uses ftrace to attach to functions when a probe is needed at the start or end of the function. The fprobe and kretprobe logic implements a similar method as the function graph tracer to trace the end of the function. That is to hijack the return address and jump to a trampoline to do the trace when the function exits. To do this, a shadow stack needs to be created to store the original return address. Fprobes and function graph do this slightly differently. Fprobes (and kretprobes) has slots per callsite that are reserved to save the return address. This is fine when just a few points are traced. But users of fprobes, such as BPF programs, are starting to add many more locations, and this method does not scale. The function graph tracer was created to trace all functions in the kernel. In order to do this, when function graph tracing is started, every task gets its own shadow stack to hold the return address that is going to be traced. The function graph tracer has been updated to allow multiple users to use its infrastructure. Now have fprobes be one of those users. This will also allow for the fprobe and kretprobe methods to trace the return address to become obsolete. With new technologies like CFI that need to know about these methods of hijacking the return address, going toward a solution that has only one method of doing this will make the kernel less complex. - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Remove disabling of interrupts in the function graph tracer When function graph tracer was first introduced, it could race with interrupts and NMIs. To prevent that race, it would disable interrupts and not trace NMIs. But the code has changed to allow NMIs and also interrupts. This change was done a long time ago, but the disabling of interrupts was never removed. Remove the disabling of interrupts in the function graph tracer is it is not needed. This greatly improves its performance. - Allow the :mod: command to enable tracing module functions on the kernel command line. The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Because enabling function tracing can be done very early at boot up (before scheduling is enabled), the commands that can be done when function tracing is started is limited. Having the ":mod:" command to trace module functions as they are loaded is very useful. Update the kernel command line function filtering to allow it. * tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits) ftrace: Implement :mod: cache filtering on kernel command line tracing: Adopt __free() and guard() for trace_fprobe.c bpf: Use ftrace_get_symaddr() for kprobe_multi probes ftrace: Add ftrace_get_symaddr to convert fentry_ip to symaddr Documentation: probes: Update fprobe on function-graph tracer selftests/ftrace: Add a test case for repeating register/unregister fprobe selftests: ftrace: Remove obsolate maxactive syntax check tracing/fprobe: Remove nr_maxactive from fprobe fprobe: Add fprobe_header encoding feature fprobe: Rewrite fprobe on function-graph tracer s390/tracing: Enable HAVE_FTRACE_GRAPH_FUNC ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS tracing: Add ftrace_fill_perf_regs() for perf event tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs fprobe: Use ftrace_regs in fprobe exit handler fprobe: Use ftrace_regs in fprobe entry handler fgraph: Pass ftrace_regs to retfunc fgraph: Replace fgraph_ret_regs with ftrace_regs ... |
||
|
Michael Ellerman
|
200f22fa48 |
powerpc/prom_init: Use IS_ENABLED()
Use IS_ENABLED() for the device tree checks, so that more code is checked by the compiler without having to build all the different configurations. Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218113159.422821-1-mpe@ellerman.id.au |
||
|
Gaurav Batra
|
8f70caad82 |
powerpc/pseries/iommu: IOMMU incorrectly marks MMIO range in DDW
Power Hypervisor can possibily allocate MMIO window intersecting with
Dynamic DMA Window (DDW) range, which is over 32-bit addressing.
These MMIO pages needs to be marked as reserved so that IOMMU doesn't map
DMA buffers in this range.
The current code is not marking these pages correctly which is resulting
in LPAR to OOPS while booting. The stack is at below
BUG: Unable to handle kernel data access on read at 0xc00800005cd40000
Faulting instruction address: 0xc00000000005cdac
Oops: Kernel access of bad area, sig: 11 [#1]
LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
Modules linked in: af_packet rfkill ibmveth(X) lpfc(+) nvmet_fc nvmet nvme_keyring crct10dif_vpmsum nvme_fc nvme_fabrics nvme_core be2net(+) nvme_auth rtc_generic nfsd auth_rpcgss nfs_acl lockd grace sunrpc fuse configfs ip_tables x_tables xfs libcrc32c dm_service_time ibmvfc(X) scsi_transport_fc vmx_crypto gf128mul crc32c_vpmsum dm_mirror dm_region_hash dm_log dm_multipath dm_mod sd_mod scsi_dh_emc scsi_dh_rdac scsi_dh_alua t10_pi crc64_rocksoft_generic crc64_rocksoft sg crc64 scsi_mod
Supported: Yes, External
CPU: 8 PID: 241 Comm: kworker/8:1 Kdump: loaded Not tainted 6.4.0-150600.23.14-default #1 SLE15-SP6 b44ee71c81261b9e4bab5e0cde1f2ed891d5359b
Hardware name: IBM,9080-M9S POWER9 (raw) 0x4e2103 0xf000005 of:IBM,FW950.B0 (VH950_149) hv:phyp pSeries
Workqueue: events work_for_cpu_fn
NIP: c00000000005cdac LR: c00000000005e830 CTR: 0000000000000000
REGS: c00001400c9ff770 TRAP: 0300 Not tainted (6.4.0-150600.23.14-default)
MSR: 800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 24228448 XER: 00000001
CFAR: c00000000005cdd4 DAR: c00800005cd40000 DSISR: 40000000 IRQMASK: 0
GPR00: c00000000005e830 c00001400c9ffa10 c000000001987d00 c00001400c4fe800
GPR04: 0000080000000000 0000000000000001 0000000004000000 0000000000800000
GPR08: 0000000004000000 0000000000000001 c00800005cd40000 ffffffffffffffff
GPR12: 0000000084228882 c00000000a4c4f00 0000000000000010 0000080000000000
GPR16: c00001400c4fe800 0000000004000000 0800000000000000 c00000006088b800
GPR20: c00001401a7be980 c00001400eff3800 c000000002a2da68 000000000000002b
GPR24: c0000000026793a8 c000000002679368 000000000000002a c0000000026793c8
GPR28: 000008007effffff 0000080000000000 0000000000800000 c00001400c4fe800
NIP [c00000000005cdac] iommu_table_reserve_pages+0xac/0x100
LR [c00000000005e830] iommu_init_table+0x80/0x1e0
Call Trace:
[c00001400c9ffa10] [c00000000005e810] iommu_init_table+0x60/0x1e0 (unreliable)
[c00001400c9ffa90] [c00000000010356c] iommu_bypass_supported_pSeriesLP+0x9cc/0xe40
[c00001400c9ffc30] [c00000000005c300] dma_iommu_dma_supported+0xf0/0x230
[c00001400c9ffcb0] [c00000000024b0c4] dma_supported+0x44/0x90
[c00001400c9ffcd0] [c00000000024b14c] dma_set_mask+0x3c/0x80
[c00001400c9ffd00] [c0080000555b715c] be_probe+0xc4/0xb90 [be2net]
[c00001400c9ffdc0] [c000000000986f3c] local_pci_probe+0x6c/0x110
[c00001400c9ffe40] [c000000000188f28] work_for_cpu_fn+0x38/0x60
[c00001400c9ffe70] [c00000000018e454] process_one_work+0x314/0x620
[c00001400c9fff10] [c00000000018f280] worker_thread+0x2b0/0x620
[c00001400c9fff90] [c00000000019bb18] kthread+0x148/0x150
[c00001400c9fffe0] [c00000000000ded8] start_kernel_thread+0x14/0x18
There are 2 issues in the code
1. The index is "int" while the address is "unsigned long". This results in
negative value when setting the bitmap.
2. The DMA offset is page shifted but the MMIO range is used as-is (64-bit
address). MMIO address needs to be page shifted as well.
Fixes:
|
||
|
Matthew Maurer
|
54ac1ac8ed |
modules: Support extended MODVERSIONS info
Adds a new format for MODVERSIONS which stores each field in a separate ELF section. This initially adds support for variable length names, but could later be used to add additional fields to MODVERSIONS in a backwards compatible way if needed. Any new fields will be ignored by old user tooling, unlike the current format where user tooling cannot tolerate adjustments to the format (for example making the name field longer). Since PPC munges its version records to strip leading dots, we reproduce the munging for the new format. Other architectures do not appear to have architecture-specific usage of this information. Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Matthew Maurer <mmaurer@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
|
Masami Hiramatsu (Google)
|
41705c4262 |
fgraph: Pass ftrace_regs to entryfunc
Pass ftrace_regs to the fgraph_ops::entryfunc(). If ftrace_regs is not available, it passes a NULL instead. User callback function can access some registers (including return address) via this ftrace_regs. Note that the ftrace_regs can be NULL when the arch does NOT define: HAVE_DYNAMIC_FTRACE_WITH_ARGS or HAVE_DYNAMIC_FTRACE_WITH_REGS. More specifically, if HAVE_DYNAMIC_FTRACE_WITH_REGS is defined but not the HAVE_DYNAMIC_FTRACE_WITH_ARGS, and the ftrace ops used to register the function callback does not set FTRACE_OPS_FL_SAVE_REGS. In this case, ftrace_regs can be NULL in user callback. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Florent Revest <revest@chromium.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: bpf <bpf@vger.kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alan Maguire <alan.maguire@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Naveen N Rao <naveen@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/173518990044.391279.17406984900626078579.stgit@devnote2 Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Masami Hiramatsu (Google)
|
d576aec24d |
fgraph: Get ftrace recursion lock in function_graph_enter
Get the ftrace recursion lock in the generic function_graph_enter() instead of each architecture code. This changes all function_graph tracer callbacks running in non-preemptive state. On x86 and powerpc, this is by default, but on the other architecutres, this will be new. Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Florent Revest <revest@chromium.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: bpf <bpf@vger.kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alan Maguire <alan.maguire@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Naveen N Rao <naveen@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/173379653720.973433.18438622234884980494.stgit@devnote2 Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Thorsten Blum
|
26bef359bc |
powerpc: Use str_on_off() helper in check_cache_coherency()
Remove hard-coded strings by using the str_on_off() helper function. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241220191705.1446-2-thorsten.blum@linux.dev |
||
|
Shrikanth Hegde
|
00199ed6f2 |
powerpc: Add preempt lazy support
Define preempt lazy bit for Powerpc. Use bit 9 which is free and within 16 bit range of NEED_RESCHED, so compiler can issue single andi. Since Powerpc doesn't use the generic entry/exit, add lazy check at exit to user. CONFIG_PREEMPTION is defined for lazy/full/rt so use it for return to kernel. Ran a few benchmarks and db workload on Power10. Performance is close to preempt=none/voluntary. Since Powerpc systems can have large core count and large memory, preempt lazy is going to be helpful in avoiding soft lockup issues. Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Ankur Arora <ankur.a.arora@oracle.com> Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241116192306.88217-2-sshegde@linux.ibm.com |
||
|
Christophe Leroy
|
9fa9712644 |
powerpc/vdso: Mark the vDSO code read-only after init
VDSO text is fixed-up during init so it can't be const, but it can be read-only after init. Do the same as x86 in commit |
||
|
Michael Ellerman
|
f66dbe4379 |
powerpc/64: Use get_user() in start_thread()
For ELFv1 binaries (big endian), the ELF entry point isn't the address of the first instruction, instead it points to the function descriptor for the entry point. The address of the first instruction is in the function descriptor. That means the kernel has to fetch the address of the first instruction from user memory. Because start_thread() uses __get_user(), which has no access_ok() checks, it looks like a malicious ELF binary could be crafted to point the entry point address at kernel memory. The kernel would load 8 bytes from kernel memory into the NIP and then start the process, it would typically crash, but a debugger could observe the NIP value which would be the result of reading from kernel memory. However that's NOT possible, because there is a check in load_elf_binary() that ensures the ELF entry point is < TASK_SIZE (look for BAD_ADDR(elf_entry)). However it's fragile for start_thread() to rely on a check elsewhere, even if the ELF parser is unlikely to ever drop the check that elf_entry is a user address. Make it more robust by using get_user(), which checks that the address points at userspace before doing the load. If the address doesn't point at userspace it will just set the result to zero, and the userspace program will crash at zero (which is fine because it's self-inflicted). Note that it's also possible for a malicious binary to have a valid ELF entry address, but with the first instruction address pointing into the kernel. However that's OK, because it is blocked by the MMU, just like any other attempt to jump into the kernel from userspace. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241216121706.26790-1-mpe@ellerman.id.au |
||
|
Christophe Leroy
|
2a17a5bebc |
powerpc/32: Replace mulhdu() by mul_u64_u64_shr()
Using mul_u64_u64_shr() provides similar calculation as mulhdu() assembly function, but enables inlining by the compiler. The home-made assembly function had special handling for when one of the arguments is not a fully populated u64 but time functions use it to multiply timebase by a calculated scale which is constructed to have most significant bit set. On mpc8xx sched_clock() runs 3% faster. On mpc83xx it is 2%. As you can see below, sched_clock() is not much bigger than before: c000cf68 <sched_clock>: c000cf68: 7d 2d 42 a6 mftbu r9 c000cf6c: 7d 0c 42 a6 mftb r8 c000cf70: 7d 4d 42 a6 mftbu r10 c000cf74: 7c 09 50 40 cmplw r9,r10 c000cf78: 40 82 ff f0 bne c000cf68 <sched_clock> c000cf7c: 3d 40 c1 37 lis r10,-16073 c000cf80: 38 8a b3 30 addi r4,r10,-19664 c000cf84: 80 ea b3 30 lwz r7,-19664(r10) c000cf88: 80 64 00 14 lwz r3,20(r4) c000cf8c: 39 40 00 00 li r10,0 c000cf90: 80 a4 00 04 lwz r5,4(r4) c000cf94: 80 c4 00 10 lwz r6,16(r4) c000cf98: 7c 63 40 10 subfc r3,r3,r8 c000cf9c: 80 84 00 08 lwz r4,8(r4) c000cfa0: 7d 06 49 10 subfe r8,r6,r9 c000cfa4: 7c c7 19 d6 mullw r6,r7,r3 c000cfa8: 7d 25 18 16 mulhwu r9,r5,r3 c000cfac: 7c 08 29 d6 mullw r0,r8,r5 c000cfb0: 7c 67 18 16 mulhwu r3,r7,r3 c000cfb4: 7d 29 30 14 addc r9,r9,r6 c000cfb8: 7c a8 28 16 mulhwu r5,r8,r5 c000cfbc: 7c ca 51 14 adde r6,r10,r10 c000cfc0: 7d 67 41 d6 mullw r11,r7,r8 c000cfc4: 7d 29 00 14 addc r9,r9,r0 c000cfc8: 7c c6 01 94 addze r6,r6 c000cfcc: 7c 63 28 14 addc r3,r3,r5 c000cfd0: 7d 4a 51 14 adde r10,r10,r10 c000cfd4: 7c e7 40 16 mulhwu r7,r7,r8 c000cfd8: 7c 63 58 14 addc r3,r3,r11 c000cfdc: 7d 4a 01 94 addze r10,r10 c000cfe0: 7c 63 30 14 addc r3,r3,r6 c000cfe4: 7d 4a 39 14 adde r10,r10,r7 c000cfe8: 35 24 ff e0 addic. r9,r4,-32 c000cfec: 41 80 00 10 blt c000cffc <sched_clock+0x94> c000cff0: 7c 63 48 30 slw r3,r3,r9 c000cff4: 38 80 00 00 li r4,0 c000cff8: 4e 80 00 20 blr c000cffc: 21 04 00 1f subfic r8,r4,31 c000d000: 54 69 f8 7e srwi r9,r3,1 c000d004: 7d 4a 20 30 slw r10,r10,r4 c000d008: 7d 29 44 30 srw r9,r9,r8 c000d00c: 7c 64 20 30 slw r4,r3,r4 c000d010: 7d 23 53 78 or r3,r9,r10 c000d014: 4e 80 00 20 blr Before this change: c000d0bc <sched_clock>: c000d0bc: 94 21 ff f0 stwu r1,-16(r1) c000d0c0: 7c 08 02 a6 mflr r0 c000d0c4: 90 01 00 14 stw r0,20(r1) c000d0c8: 93 e1 00 0c stw r31,12(r1) c000d0cc: 7d 2d 42 a6 mftbu r9 c000d0d0: 7d 0c 42 a6 mftb r8 c000d0d4: 7d 4d 42 a6 mftbu r10 c000d0d8: 7c 09 50 40 cmplw r9,r10 c000d0dc: 40 82 ff f0 bne c000d0cc <sched_clock+0x10> c000d0e0: 3f e0 c1 37 lis r31,-16073 c000d0e4: 3b ff b3 30 addi r31,r31,-19664 c000d0e8: 80 9f 00 14 lwz r4,20(r31) c000d0ec: 80 7f 00 10 lwz r3,16(r31) c000d0f0: 7c 84 40 10 subfc r4,r4,r8 c000d0f4: 80 bf 00 00 lwz r5,0(r31) c000d0f8: 80 df 00 04 lwz r6,4(r31) c000d0fc: 7c 63 49 10 subfe r3,r3,r9 c000d100: 48 00 37 85 bl c0010884 <mulhdu> c000d104: 81 3f 00 08 lwz r9,8(r31) c000d108: 35 49 ff e0 addic. r10,r9,-32 c000d10c: 41 80 00 20 blt c000d12c <sched_clock+0x70> c000d110: 80 01 00 14 lwz r0,20(r1) c000d114: 7c 83 50 30 slw r3,r4,r10 c000d118: 83 e1 00 0c lwz r31,12(r1) c000d11c: 38 80 00 00 li r4,0 c000d120: 7c 08 03 a6 mtlr r0 c000d124: 38 21 00 10 addi r1,r1,16 c000d128: 4e 80 00 20 blr c000d12c: 80 01 00 14 lwz r0,20(r1) c000d130: 54 8a f8 7e srwi r10,r4,1 c000d134: 21 09 00 1f subfic r8,r9,31 c000d138: 83 e1 00 0c lwz r31,12(r1) c000d13c: 7c 63 48 30 slw r3,r3,r9 c000d140: 7d 4a 44 30 srw r10,r10,r8 c000d144: 7c 84 48 30 slw r4,r4,r9 c000d148: 7d 43 1b 78 or r3,r10,r3 c000d14c: 7c 08 03 a6 mtlr r0 c000d150: 38 21 00 10 addi r1,r1,16 c000d154: 4e 80 00 20 blr c0010884 <mulhdu>: c0010884: 2c 06 00 00 cmpwi r6,0 c0010888: 2c 83 00 00 cmpwi cr1,r3,0 c001088c: 7c 8a 23 78 mr r10,r4 c0010890: 7c 84 28 16 mulhwu r4,r4,r5 c0010894: 41 82 00 14 beq c00108a8 <mulhdu+0x24> c0010898: 7c 0a 30 16 mulhwu r0,r10,r6 c001089c: 7c ea 29 d6 mullw r7,r10,r5 c00108a0: 7c e0 38 14 addc r7,r0,r7 c00108a4: 7c 84 01 94 addze r4,r4 c00108a8: 4d 86 00 20 beqlr cr1 c00108ac: 7d 23 29 d6 mullw r9,r3,r5 c00108b0: 7d 43 28 16 mulhwu r10,r3,r5 c00108b4: 41 82 00 18 beq c00108cc <mulhdu+0x48> c00108b8: 7c 03 31 d6 mullw r0,r3,r6 c00108bc: 7d 03 30 16 mulhwu r8,r3,r6 c00108c0: 7c e0 38 14 addc r7,r0,r7 c00108c4: 7c 84 41 14 adde r4,r4,r8 c00108c8: 7d 4a 01 94 addze r10,r10 c00108cc: 7c 84 48 14 addc r4,r4,r9 c00108d0: 7c 6a 01 94 addze r3,r10 c00108d4: 4e 80 00 20 blr Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/f29e473c193c87bdbd36b209dfdee99d2f0c60dc.1733566130.git.christophe.leroy@csgroup.eu |
||
|
Michael Ellerman
|
cf89c9434a |
powerpc/prom_init: Fixup missing powermac #size-cells
On some powermacs `escc` nodes are missing `#size-cells` properties, which is deprecated and now triggers a warning at boot since commit |
||
|
Linus Torvalds
|
42d9e8b7cc |
powerpc updates for 6.13
- Rework kfence support for the HPT MMU to work on systems with >= 16TB of RAM.
- Remove the powerpc "maple" platform, used by the "Yellow Dog Powerstation".
- Add support for DYNAMIC_FTRACE_WITH_CALL_OPS,
DYNAMIC_FTRACE_WITH_DIRECT_CALLS & BPF Trampolines.
- Add support for running KVM nested guests on Power11.
- Other small features, cleanups and fixes.
Thanks to: Amit Machhiwal, Arnd Bergmann, Christophe Leroy, Costa Shulyupin,
David Hunter, David Wang, Disha Goel, Gautam Menghani, Geert Uytterhoeven,
Hari Bathini, Julia Lawall, Kajol Jain, Keith Packard, Lukas Bulwahn, Madhavan
Srinivasan, Markus Elfring, Michal Suchanek, Ming Lei, Mukesh Kumar Chaurasiya,
Nathan Chancellor, Naveen N Rao, Nicholas Piggin, Nysal Jan K.A, Paulo Miguel
Almeida, Pavithra Prakash, Ritesh Harjani (IBM), Rob Herring (Arm), Sachin P
Bappalige, Shen Lichuan, Simon Horman, Sourabh Jain, Thomas Weißschuh, Thorsten
Blum, Thorsten Leemhuis, Venkat Rao Bagalkote, Zhang Zekun,
zhang jiao.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRjvi15rv0TSTaE+SIF0oADX8seIQUCZ0Fi5AAKCRAF0oADX8se
IeI0AQCAkNWRYzGNzPM6aMwDpq5qdeZzvp0rZxuNsRSnIKJlxAD+PAOxOietgjbQ
Lxt3oizg+UcH/304Y/iyT8IrwI4n+gE=
=xNtu
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Rework kfence support for the HPT MMU to work on systems with >= 16TB
of RAM.
- Remove the powerpc "maple" platform, used by the "Yellow Dog
Powerstation".
- Add support for DYNAMIC_FTRACE_WITH_CALL_OPS,
DYNAMIC_FTRACE_WITH_DIRECT_CALLS & BPF Trampolines.
- Add support for running KVM nested guests on Power11.
- Other small features, cleanups and fixes.
Thanks to Amit Machhiwal, Arnd Bergmann, Christophe Leroy, Costa
Shulyupin, David Hunter, David Wang, Disha Goel, Gautam Menghani, Geert
Uytterhoeven, Hari Bathini, Julia Lawall, Kajol Jain, Keith Packard,
Lukas Bulwahn, Madhavan Srinivasan, Markus Elfring, Michal Suchanek,
Ming Lei, Mukesh Kumar Chaurasiya, Nathan Chancellor, Naveen N Rao,
Nicholas Piggin, Nysal Jan K.A, Paulo Miguel Almeida, Pavithra Prakash,
Ritesh Harjani (IBM), Rob Herring (Arm), Sachin P Bappalige, Shen
Lichuan, Simon Horman, Sourabh Jain, Thomas Weißschuh, Thorsten Blum,
Thorsten Leemhuis, Venkat Rao Bagalkote, Zhang Zekun, and zhang jiao.
* tag 'powerpc-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (89 commits)
EDAC/powerpc: Remove PPC_MAPLE drivers
powerpc/perf: Add per-task/process monitoring to vpa_pmu driver
powerpc/kvm: Add vpa latency counters to kvm_vcpu_arch
docs: ABI: sysfs-bus-event_source-devices-vpa-pmu: Document sysfs event format entries for vpa_pmu
powerpc/perf: Add perf interface to expose vpa counters
MAINTAINERS: powerpc: Mark Maddy as "M"
powerpc/Makefile: Allow overriding CPP
powerpc-km82xx.c: replace of_node_put() with __free
ps3: Correct some typos in comments
powerpc/kexec: Fix return of uninitialized variable
macintosh: Use common error handling code in via_pmu_led_init()
powerpc/powermac: Use of_property_match_string() in pmac_has_backlight_type()
powerpc: remove dead config options for MPC85xx platform support
powerpc/xive: Use cpumask_intersects()
selftests/powerpc: Remove the path after initialization.
powerpc/xmon: symbol lookup length fixed
powerpc/ep8248e: Use %pa to format resource_size_t
powerpc/ps3: Reorganize kerneldoc parameter names
KVM: PPC: Book3S HV: Fix kmv -> kvm typo
powerpc/sstep: make emulate_vsx_load and emulate_vsx_store static
...
|
||
|
Linus Torvalds
|
5c00ff742b |
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection algorithm.
This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of shadow
entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in the
hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page into
small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio size
rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel Butt
removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations" from
Mike Rapoport teaches x86 to use large pages for read-only-execute
module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in tests
over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a single
VMA, rather than requiring that multiple VMAs be created for this.
Improved efficiencies for userspace memory allocators are expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP from
the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep is
enabled.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZzwFqgAKCRDdBJ7gKXxA
jkeuAQCkl+BmeYHE6uG0hi3pRxkupseR6DEOAYIiTv0/l8/GggD/Z3jmEeqnZaNq
xyyenpibWgUoShU2wZ/Ha8FE5WDINwg=
=JfWR
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection
algorithm. This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping
code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of
shadow entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in
the hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page
into small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to
do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio
size rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON
splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel
Butt removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations"
from Mike Rapoport teaches x86 to use large pages for
read-only-execute module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in
tests over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a
single VMA, rather than requiring that multiple VMAs be created for
this. Improved efficiencies for userspace memory allocators are
expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP
from the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep
is enabled.
* tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (215 commits)
cma: enforce non-zero pageblock_order during cma_init_reserved_mem()
mm/kfence: add a new kunit test test_use_after_free_read_nofault()
zram: fix NULL pointer in comp_algorithm_show()
memcg/hugetlb: add hugeTLB counters to memcg
vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount
zram: ZRAM_DEF_COMP should depend on ZRAM
MAINTAINERS/MEMORY MANAGEMENT: add document files for mm
Docs/mm/damon: recommend academic papers to read and/or cite
mm: define general function pXd_init()
kmemleak: iommu/iova: fix transient kmemleak false positive
mm/list_lru: simplify the list_lru walk callback function
mm/list_lru: split the lock to per-cgroup scope
mm/list_lru: simplify reparenting and initial allocation
mm/list_lru: code clean up for reparenting
mm/list_lru: don't export list_lru_add
mm/list_lru: don't pass unnecessary key parameters
kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller
kasan: change kasan_atomics kunit test as KUNIT_CASE_SLOW
kasan: use EXPORT_SYMBOL_IF_KUNIT to export symbols
...
|
||
|
Linus Torvalds
|
e6de688e93 |
Devicetree updates for v6.13:
Bindings:
- Enable dtc "interrupt_provider" warnings for binding examples.
Fix the warnings in fsl,mu-msi and ti,sci-inta due to this.
- Convert zii,rave-sp-wdt, zii,rave-sp-pwrbutton, and
altr,fpga-passive-serial to DT schema format
- Add some documentation on the different forms of YAML text blocks
which are a constant source of review comments
- Fix some schema errors in constraints for arrays
- Add compatibles for qcom,sar2130p-pdc and onnn,adt7462
DT core:
- Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
- Add some warnings on deprecated address handling
- Rework early_init_dt_scan() so the arch can pass in the phys address
of the DTB as __pa() is not always valid to use. This fixes a warning
for arm64 with kexec.
- Add and use some new DT graph iterators for iterating over ports and
endpoints
- Rework reserved-memory handling to be sized dynamically for fixed
regions
- Optimize of_modalias() to avoid a strlen() call
- Constify struct device_node and property pointers where ever possible
-----BEGIN PGP SIGNATURE-----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=NCYS
-----END PGP SIGNATURE-----
Merge tag 'devicetree-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"Bindings:
- Enable dtc "interrupt_provider" warnings for binding examples. Fix
the warnings in fsl,mu-msi and ti,sci-inta due to this.
- Convert zii,rave-sp-wdt, zii,rave-sp-pwrbutton, and
altr,fpga-passive-serial to DT schema format
- Add some documentation on the different forms of YAML text blocks
which are a constant source of review comments
- Fix some schema errors in constraints for arrays
- Add compatibles for qcom,sar2130p-pdc and onnn,adt7462
DT core:
- Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
- Add some warnings on deprecated address handling
- Rework early_init_dt_scan() so the arch can pass in the phys
address of the DTB as __pa() is not always valid to use. This fixes
a warning for arm64 with kexec.
- Add and use some new DT graph iterators for iterating over ports
and endpoints
- Rework reserved-memory handling to be sized dynamically for fixed
regions
- Optimize of_modalias() to avoid a strlen() call
- Constify struct device_node and property pointers where ever
possible"
* tag 'devicetree-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (36 commits)
of: Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
dt-bindings: interrupt-controller: qcom,pdc: Add SAR2130P compatible
of/address: Rework bus matching to avoid warnings
of: WARN on deprecated #address-cells/#size-cells handling
of/fdt: Don't use default address cell sizes for address translation
dt-bindings: Enable dtc "interrupt_provider" warnings
of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify
dt-bindings: cache: qcom,llcc: Fix X1E80100 reg entries
dt-bindings: watchdog: convert zii,rave-sp-wdt.txt to yaml format
dt-bindings: input: convert zii,rave-sp-pwrbutton.txt to yaml
media: xilinx-tpg: use new of_graph functions
fbdev: omapfb: use new of_graph functions
gpu: drm: omapdrm: use new of_graph functions
ASoC: audio-graph-card2: use new of_graph functions
ASoC: audio-graph-card: use new of_graph functions
ASoC: test-component: use new of_graph functions
of: property: use new of_graph functions
of: property: add of_graph_get_next_port_endpoint()
of: property: add of_graph_get_next_port()
of: module: remove strlen() call in of_modalias()
...
|
||
|
Linus Torvalds
|
aad3a0d084 |
ftrace updates for v6.13:
- Merged tag ftrace-v6.12-rc4 There was a fix to locking in register_ftrace_graph() for shadow stacks that was sent upstream. But this code was also being rewritten, and the locking fix was needed. Merging this fix was required to continue the work. - Restructure the function graph shadow stack to prepare it for use with kretprobes With the goal of merging the shadow stack logic of function graph and kretprobes, some more restructuring of the function shadow stack is required. Move out function graph specific fields from the fgraph infrastructure and store it on the new stack variables that can pass data from the entry callback to the exit callback. Hopefully, with this change, the merge of kretprobes to use fgraph shadow stacks will be ready by the next merge window. - Make shadow stack 4k instead of using PAGE_SIZE. Some architectures have very large PAGE_SIZE values which make its use for shadow stacks waste a lot of memory. - Give shadow stacks its own kmem cache. When function graph is started, every task on the system gets a shadow stack. In the future, shadow stacks may not be 4K in size. Have it have its own kmem cache so that whatever size it becomes will still be efficient in allocations. - Initialize profiler graph ops as it will be needed for new updates to fgraph - Convert to use guard(mutex) for several ftrace and fgraph functions - Add more comments and documentation - Show function return address in function graph tracer Add an option to show the caller of a function at each entry of the function graph tracer, similar to what the function tracer does. - Abstract out ftrace_regs from being used directly like pt_regs ftrace_regs was created to store a partial pt_regs. It holds only the registers and stack information to get to the function arguments and return values. On several archs, it is simply a wrapper around pt_regs. But some users would access ftrace_regs directly to get the pt_regs which will not work on all archs. Make ftrace_regs an abstract structure that requires all access to its fields be through accessor functions. - Show how long it takes to do function code modifications When code modification for function hooks happen, it always had the time recorded in how long it took to do the conversion. But this value was never exported. Recently the code was touched due to new ROX modification handling that caused a large slow down in doing the modifications and had a significant impact on boot times. Expose the timings in the dyn_ftrace_total_info file. This file was created a while ago to show information about memory usage and such to implement dynamic function tracing. It's also an appropriate file to store the timings of this modification as well. This will make it easier to see the impact of changes to code modification on boot up timings. - Other clean ups and small fixes -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZztrUxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qnnNAQD6w4q9VQ7oOE2qKLqtnj87h4c1GqKn SPkpEfC3n/ATEAD/fnYjT/eOSlHiGHuD/aTA+U/bETrT99bozGM/4mFKEgY= =6nCa -----END PGP SIGNATURE----- Merge tag 'ftrace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ftrace updates from Steven Rostedt: - Restructure the function graph shadow stack to prepare it for use with kretprobes With the goal of merging the shadow stack logic of function graph and kretprobes, some more restructuring of the function shadow stack is required. Move out function graph specific fields from the fgraph infrastructure and store it on the new stack variables that can pass data from the entry callback to the exit callback. Hopefully, with this change, the merge of kretprobes to use fgraph shadow stacks will be ready by the next merge window. - Make shadow stack 4k instead of using PAGE_SIZE. Some architectures have very large PAGE_SIZE values which make its use for shadow stacks waste a lot of memory. - Give shadow stacks its own kmem cache. When function graph is started, every task on the system gets a shadow stack. In the future, shadow stacks may not be 4K in size. Have it have its own kmem cache so that whatever size it becomes will still be efficient in allocations. - Initialize profiler graph ops as it will be needed for new updates to fgraph - Convert to use guard(mutex) for several ftrace and fgraph functions - Add more comments and documentation - Show function return address in function graph tracer Add an option to show the caller of a function at each entry of the function graph tracer, similar to what the function tracer does. - Abstract out ftrace_regs from being used directly like pt_regs ftrace_regs was created to store a partial pt_regs. It holds only the registers and stack information to get to the function arguments and return values. On several archs, it is simply a wrapper around pt_regs. But some users would access ftrace_regs directly to get the pt_regs which will not work on all archs. Make ftrace_regs an abstract structure that requires all access to its fields be through accessor functions. - Show how long it takes to do function code modifications When code modification for function hooks happen, it always had the time recorded in how long it took to do the conversion. But this value was never exported. Recently the code was touched due to new ROX modification handling that caused a large slow down in doing the modifications and had a significant impact on boot times. Expose the timings in the dyn_ftrace_total_info file. This file was created a while ago to show information about memory usage and such to implement dynamic function tracing. It's also an appropriate file to store the timings of this modification as well. This will make it easier to see the impact of changes to code modification on boot up timings. - Other clean ups and small fixes * tag 'ftrace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (22 commits) ftrace: Show timings of how long nop patching took ftrace: Use guard to take ftrace_lock in ftrace_graph_set_hash() ftrace: Use guard to take the ftrace_lock in release_probe() ftrace: Use guard to lock ftrace_lock in cache_mod() ftrace: Use guard for match_records() fgraph: Use guard(mutex)(&ftrace_lock) for unregister_ftrace_graph() fgraph: Give ret_stack its own kmem cache fgraph: Separate size of ret_stack from PAGE_SIZE ftrace: Rename ftrace_regs_return_value to ftrace_regs_get_return_value selftests/ftrace: Fix check of return value in fgraph-retval.tc test ftrace: Use arch_ftrace_regs() for ftrace_regs_*() macros ftrace: Consolidate ftrace_regs accessor functions for archs using pt_regs ftrace: Make ftrace_regs abstract from direct use fgragh: No need to invoke the function call_filter_check_discard() fgraph: Simplify return address printing in function graph tracer function_graph: Remove unnecessary initialization in ftrace_graph_ret_addr() function_graph: Support recording and printing the function return address ftrace: Have calltime be saved in the fgraph storage ftrace: Use a running sleeptime instead of saving on shadow stack fgraph: Use fgraph data to store subtime for profiler ... |
||
|
Linus Torvalds
|
bf9aa14fc5 |
A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the signal
of the timer is ignored so that the timer signal can be delivered once
the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small intervals
and keeps the system pointlessly out of low power states for no value.
This is a long standing non-trivial problem due to the lock order of
posix-timer lock and the sighand lock along with life time issues as
the timer and the sigqueue have different life time rules.
Cure this by:
* Embedding the sigqueue into the timer struct to have the same life
time rules. Aside of that this also avoids the lookup of the timer
in the signal delivery and rearm path as it's just a always valid
container_of() now.
* Queuing ignored timer signals onto a seperate ignored list.
* Moving queued timer signals onto the ignored list when the signal is
switched to SIG_IGN before it could be delivered.
* Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal delivery
code to rearm the timer.
This also required to consolidate the signal delivery rules so they are
consistent across all situations. With that all self test scenarios
finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time stamps
by default and switch to fine grained time stamps when inode attributes
are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that the
VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
* Move all sleep and timeout functions into one file
* Rework udelay() and ndelay() into proper documented inline functions
and replace the hardcoded magic numbers by proper defines.
* Rework the fsleep() implementation to take the reality of the timer
wheel granularity on different HZ values into account. Right now the
boundaries are hard coded time ranges which fail to provide the
requested accuracy on different HZ settings.
* Update documentation for all sleep/timeout related functions and fix
up stale documentation links all over the place
* Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as that's
the clock which drives the timekeeping adjustments via the various user
space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file descriptor
based posix clocks, but their usability is very limited. They can't be
accessed fast as they always go all the way out to the hardware and
they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the kernel
provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework converts
timekeeping and adjtimex(2) into generic functionality which operates
on pointers to data structures instead of using static variables.
This allows to provide time accessors and adjtimex(2) functionality for
the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less straight
forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the core
code and a few usage sites of the less frequently used interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is already
prepared and scheduled for the next merge window.
- Drivers:
* Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with other
clusters.
* Mostly boring cleanups, fixes, improvements and code movement
-----BEGIN PGP SIGNATURE-----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=2VC6
-----END PGP SIGNATURE-----
Merge tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the
signal of the timer is ignored so that the timer signal can be
delivered once the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small
intervals and keeps the system pointlessly out of low power states
for no value. This is a long standing non-trivial problem due to
the lock order of posix-timer lock and the sighand lock along with
life time issues as the timer and the sigqueue have different life
time rules.
Cure this by:
- Embedding the sigqueue into the timer struct to have the same
life time rules. Aside of that this also avoids the lookup of
the timer in the signal delivery and rearm path as it's just a
always valid container_of() now.
- Queuing ignored timer signals onto a seperate ignored list.
- Moving queued timer signals onto the ignored list when the
signal is switched to SIG_IGN before it could be delivered.
- Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal
delivery code to rearm the timer.
This also required to consolidate the signal delivery rules so they
are consistent across all situations. With that all self test
scenarios finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time
stamps by default and switch to fine grained time stamps when inode
attributes are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that
the VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
- Move all sleep and timeout functions into one file
- Rework udelay() and ndelay() into proper documented inline
functions and replace the hardcoded magic numbers by proper
defines.
- Rework the fsleep() implementation to take the reality of the
timer wheel granularity on different HZ values into account.
Right now the boundaries are hard coded time ranges which fail
to provide the requested accuracy on different HZ settings.
- Update documentation for all sleep/timeout related functions
and fix up stale documentation links all over the place
- Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP
clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as
that's the clock which drives the timekeeping adjustments via the
various user space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file
descriptor based posix clocks, but their usability is very limited.
They can't be accessed fast as they always go all the way out to
the hardware and they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the
kernel provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework
converts timekeeping and adjtimex(2) into generic functionality
which operates on pointers to data structures instead of using
static variables.
This allows to provide time accessors and adjtimex(2) functionality
for the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less
straight forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the
core code and a few usage sites of the less frequently used
interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is
already prepared and scheduled for the next merge window.
- Drivers:
- Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with
other clusters.
- Mostly boring cleanups, fixes, improvements and code movement"
* tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (140 commits)
posix-timers: Fix spurious warning on double enqueue versus do_exit()
clocksource/drivers/arm_arch_timer: Use of_property_present() for non-boolean properties
clocksource/drivers/gpx: Remove redundant casts
clocksource/drivers/timer-ti-dm: Fix child node refcount handling
dt-bindings: timer: actions,owl-timer: convert to YAML
clocksource/drivers/ralink: Add Ralink System Tick Counter driver
clocksource/drivers/mips-gic-timer: Always use cluster 0 counter as clocksource
clocksource/drivers/timer-ti-dm: Don't fail probe if int not found
clocksource/drivers:sp804: Make user selectable
clocksource/drivers/dw_apb: Remove unused dw_apb_clockevent functions
hrtimers: Delete hrtimer_init_on_stack()
alarmtimer: Switch to use hrtimer_setup() and hrtimer_setup_on_stack()
io_uring: Switch to use hrtimer_setup_on_stack()
sched/idle: Switch to use hrtimer_setup_on_stack()
hrtimers: Delete hrtimer_init_sleeper_on_stack()
wait: Switch to use hrtimer_setup_sleeper_on_stack()
timers: Switch to use hrtimer_setup_sleeper_on_stack()
net: pktgen: Switch to use hrtimer_setup_sleeper_on_stack()
futex: Switch to use hrtimer_setup_sleeper_on_stack()
fs/aio: Switch to use hrtimer_setup_sleeper_on_stack()
...
|
||
|
Linus Torvalds
|
0352387523 |
First step of consolidating the VDSO data page handling:
The VDSO data page handling is architecture specific for historical
reasons, but there is no real technical reason to do so.
Aside of that VDSO data has become a dump ground for various mechanisms
and fail to provide a clear separation of the functionalities.
Clean this up by:
* consolidating the VDSO page data by getting rid of architecture
specific warts especially in x86 and PowerPC.
* removing the last includes of header files which are pulling in other
headers outside of the VDSO namespace.
* seperating timekeeping and other VDSO data accordingly.
Further consolidation of the VDSO page handling is done in subsequent
changes scheduled for the next merge window.
This also lays the ground for expanding the VDSO time getters for
independent PTP clocks in a generic way without making every architecture
add support seperately.
-----BEGIN PGP SIGNATURE-----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=q5eD
-----END PGP SIGNATURE-----
Merge tag 'timers-vdso-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vdso data page handling updates from Thomas Gleixner:
"First steps of consolidating the VDSO data page handling.
The VDSO data page handling is architecture specific for historical
reasons, but there is no real technical reason to do so.
Aside of that VDSO data has become a dump ground for various
mechanisms and fail to provide a clear separation of the
functionalities.
Clean this up by:
- consolidating the VDSO page data by getting rid of architecture
specific warts especially in x86 and PowerPC.
- removing the last includes of header files which are pulling in
other headers outside of the VDSO namespace.
- seperating timekeeping and other VDSO data accordingly.
Further consolidation of the VDSO page handling is done in subsequent
changes scheduled for the next merge window.
This also lays the ground for expanding the VDSO time getters for
independent PTP clocks in a generic way without making every
architecture add support seperately"
* tag 'timers-vdso-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/vdso: Add missing brackets in switch case
vdso: Rename struct arch_vdso_data to arch_vdso_time_data
powerpc: Split systemcfg struct definitions out from vdso
powerpc: Split systemcfg data out of vdso data page
powerpc: Add kconfig option for the systemcfg page
powerpc/pseries/lparcfg: Use num_possible_cpus() for potential processors
powerpc/pseries/lparcfg: Fix printing of system_active_processors
powerpc/procfs: Propagate error of remap_pfn_range()
powerpc/vdso: Remove offset comment from 32bit vdso_arch_data
x86/vdso: Split virtual clock pages into dedicated mapping
x86/vdso: Delete vvar.h
x86/vdso: Access vdso data without vvar.h
x86/vdso: Move the rng offset to vsyscall.h
x86/vdso: Access rng vdso data without vvar.h
x86/vdso: Access timens vdso data without vvar.h
x86/vdso: Allocate vvar page from C code
x86/vdso: Access rng data from kernel without vvar
x86/vdso: Place vdso_data at beginning of vvar page
x86/vdso: Use __arch_get_vdso_data() to access vdso data
x86/mm/mmap: Remove arch_vma_name()
...
|
||
|
Linus Torvalds
|
82339c4911 |
sanitize xattr and io_uring interactions with it,
add *xattrat() syscalls, sanitize struct filename handling in there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCZzdj4gAKCRBZ7Krx/gZQ 6/02AQC8ndn9i1wLGRb5DdZYGNWUDhXCdPrZCF2nyvU2swCIPwEAm1H5F/bxBXeT 6qCLHThVw4KTJOT2aDY03ELrxbi8Vg4= =35Oj -----END PGP SIGNATURE----- Merge tag 'pull-xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull xattr updates from Al Viro: "Sanitize xattr and io_uring interactions with it, add *xattrat() syscalls, sanitize struct filename handling in there" * tag 'pull-xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: xattr: remove redundant check on variable err fs/xattr: add *at family syscalls new helpers: file_removexattr(), filename_removexattr() new helpers: file_listxattr(), filename_listxattr() replace do_getxattr() with saner helpers. replace do_setxattr() with saner helpers. new helper: import_xattr_name() fs: rename struct xattr_ctx to kernel_xattr_ctx xattr: switch to CLASS(fd) io_[gs]etxattr_prep(): just use getname() io_uring: IORING_OP_F[GS]ETXATTR is fine with REQ_F_FIXED_FILE getname_maybe_null() - the third variant of pathname copy-in teach filename_lookup() to treat NULL filename as "" |
||
|
Arnd Bergmann
|
a5371018ee |
powerpc/Makefile: Allow overriding CPP
Unlike all other arches, powerpc doesn't allow the user to override CPP, because it sets it unconditionally in the arch Makefile. This can lead to strange build failures. Instead add the required flags to KBUILD_CPPFLAGS, which are passed to CPP, CC and AS invocations by the generic Makefile logic. Reported-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Closes: https://lore.kernel.org/all/20240607061629.530301-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> [mpe: Rebase, write change log, add Arnd's SoB as communicated privately] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241107112646.32401-1-mpe@ellerman.id.au |
||
|
Thomas Weißschuh
|
d7a82238cb |
powerpc/vdso: Remove unused clockmode asm offsets
These offsets are not used anymore, delete them.
Fixes:
|
||
|
David Wang
|
5b881c1f83 |
powerpc/irq: use seq_put_decimal_ull_width() for decimal values
On a system with n CPUs and m interrupts, there will be n*m decimal values yielded via seq_printf(.."%10u "..) which is less efficient than seq_put_decimal_ull_width(), stress reading /proc/interrupts indicates ~30% performance improvement with this patch. Signed-off-by: David Wang <00107082@163.com> [mpe: Flesh out change log based on original submission] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/all/20241103080552.4787-1-00107082@163.com Link: https://patch.msgid.link/20241108162327.9887-1-00107082@163.com |
||
|
Gautam Menghani
|
44e5d21e6d |
powerpc/pseries: Fix KVM guest detection for disabling hardlockup detector
As per the kernel documentation[1], hardlockup detector should
be disabled in KVM guests as it may give false positives. On
PPC, hardlockup detector is enabled inside KVM guests because
disable_hardlockup_detector() is marked as early_initcall and it
relies on kvm_guest static key (is_kvm_guest()) which is initialized
later during boot by check_kvm_guest(), which is a core_initcall.
check_kvm_guest() is also called in pSeries_smp_probe(), which is called
before initcalls, but it is skipped if KVM guest does not have doorbell
support or if the guest is launched with SMT=1.
Call check_kvm_guest() in disable_hardlockup_detector() so that
is_kvm_guest() check goes through fine and hardlockup detector can be
disabled inside the KVM guest.
[1]: Documentation/admin-guide/sysctl/kernel.rst
Fixes:
|
||
|
Sourabh Jain
|
fb90dca828 |
fadump: reserve param area if below boot_mem_top
The param area is a memory region where the kernel places additional
command-line arguments for fadump kernel. Currently, the param memory
area is reserved in fadump kernel if it is above boot_mem_top. However,
it should be reserved if it is below boot_mem_top because the fadump
kernel already reserves memory from boot_mem_top to the end of DRAM.
Currently, there is no impact from not reserving param memory if it is
below boot_mem_top, as it is not used after the early boot phase of the
fadump kernel. However, if this changes in the future, it could lead to
issues in the fadump kernel.
Fixes:
|
||
|
Hari Bathini
|
f4892c68ec |
powerpc/fadump: allocate memory for additional parameters early
Memory for passing additional parameters to fadump capture kernel
is allocated during subsys_initcall level, using memblock. But
as slab is already available by this time, allocation happens via
the buddy allocator. This may work for radix MMU but is likely to
fail in most cases for hash MMU as hash MMU needs this memory in
the first memory block for it to be accessible in real mode in the
capture kernel (second boot). So, allocate memory for additional
parameters area as soon as MMU mode is obvious.
Fixes:
|
||
|
Mike Rapoport (Microsoft)
|
0c3beacf68 |
asm-generic: introduce text-patching.h
Several architectures support text patching, but they name the header files that declare patching functions differently. Make all such headers consistently named text-patching.h and add an empty header in asm-generic for architectures that do not support text patching. Link: https://lkml.kernel.org/r/20241023162711.2579610-4-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Tested-by: kdevops <kdevops@lists.linux.dev> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <linux@armlinux.org.uk> Cc: Song Liu <song@kernel.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christian Göttsche
|
6140be90ec |
fs/xattr: add *at family syscalls
Add the four syscalls setxattrat(), getxattrat(), listxattrat() and
removexattrat(). Those can be used to operate on extended attributes,
especially security related ones, either relative to a pinned directory
or on a file descriptor without read access, avoiding a
/proc/<pid>/fd/<fd> detour, requiring a mounted procfs.
One use case will be setfiles(8) setting SELinux file contexts
("security.selinux") without race conditions and without a file
descriptor opened with read access requiring SELinux read permission.
Use the do_{name}at() pattern from fs/open.c.
Pass the value of the extended attribute, its length, and for
setxattrat(2) the command (XATTR_CREATE or XATTR_REPLACE) via an added
struct xattr_args to not exceed six syscall arguments and not
merging the AT_* and XATTR_* flags.
[AV: fixes by Christian Brauner folded in, the entire thing rebased on
top of {filename,file}_...xattr() primitives, treatment of empty
pathnames regularized. As the result, AT_EMPTY_PATH+NULL handling
is cheap, so f...(2) can use it]
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Link: https://lore.kernel.org/r/20240426162042.191916-1-cgoettsche@seltendoof.de
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
CC: x86@kernel.org
CC: linux-alpha@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: linux-arm-kernel@lists.infradead.org
CC: linux-ia64@vger.kernel.org
CC: linux-m68k@lists.linux-m68k.org
CC: linux-mips@vger.kernel.org
CC: linux-parisc@vger.kernel.org
CC: linuxppc-dev@lists.ozlabs.org
CC: linux-s390@vger.kernel.org
CC: linux-sh@vger.kernel.org
CC: sparclinux@vger.kernel.org
CC: linux-fsdevel@vger.kernel.org
CC: audit@vger.kernel.org
CC: linux-arch@vger.kernel.org
CC: linux-api@vger.kernel.org
CC: linux-security-module@vger.kernel.org
CC: selinux@vger.kernel.org
[brauner: slight tweaks]
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
||
|
Thorsten Blum
|
19e0a70e6c |
powerpc: Use str_enabled_disabled() helper function
Remove hard-coded strings by using the str_enabled_disabled() helper function. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241027222219.1173-2-thorsten.blum@linux.dev |
||
|
Nathan Chancellor
|
d677ce5213 |
powerpc/vdso: Drop -mstack-protector-guard flags in 32-bit files with clang
Under certain conditions, the 64-bit '-mstack-protector-guard' flags may end up in the 32-bit vDSO flags, resulting in build failures due to the structure of clang's argument parsing of the stack protector options, which validates the arguments of the stack protector guard flags unconditionally in the frontend, choking on the 64-bit values when targeting 32-bit: clang: error: invalid value 'r13' in 'mstack-protector-guard-reg=', expected one of: r2 clang: error: invalid value 'r13' in 'mstack-protector-guard-reg=', expected one of: r2 make[3]: *** [arch/powerpc/kernel/vdso/Makefile:85: arch/powerpc/kernel/vdso/vgettimeofday-32.o] Error 1 make[3]: *** [arch/powerpc/kernel/vdso/Makefile:87: arch/powerpc/kernel/vdso/vgetrandom-32.o] Error 1 Remove these flags by adding them to the CC32FLAGSREMOVE variable, which already handles situations similar to this. Additionally, reformat and align a comment better for the expanding CONFIG_CC_IS_CLANG block. Cc: stable@vger.kernel.org # v6.1+ Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030-powerpc-vdso-drop-stackp-flags-clang-v1-1-d95e7376d29c@kernel.org |
||
|
Thomas Weißschuh
|
6142be7ed7 |
powerpc: Split systemcfg struct definitions out from vdso
The systemcfg data has nothing to do anymore with the vdso. Split it into a dedicated header file. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-27-b64f0842d512@linutronix.de |
||
|
Thomas Weißschuh
|
1184674d6e |
powerpc: Split systemcfg data out of vdso data page
The systemcfg data only has minimal overlap with the vdso data. Splitting the two avoids mapping the implementation-defined vdso data into /proc/ppc64/systemcfg. It is also a preparation for the standardization of vdso data storage. The only field actually used by both systemcfg and vdso is tb_ticks_per_sec and it is only changed once during time_init(). Initialize it in both structures there. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-26-b64f0842d512@linutronix.de |
||
|
Thomas Weißschuh
|
c22c06b4cc |
powerpc: Add kconfig option for the systemcfg page
The systemcfg page through procfs is only a backwards-compatible interface for very old applications. Make it possible to be disabled. This also creates a convenient config #define to guard any accesses to the systemcfg page. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-25-b64f0842d512@linutronix.de |
||
|
Thomas Weißschuh
|
d4526a2d2d |
powerpc/procfs: Propagate error of remap_pfn_range()
If the operation fails and userspace is unaware it will access unmapped memory, crashing the process. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-22-b64f0842d512@linutronix.de |
||
|
Naveen N Rao
|
a52f6043a2 |
powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS
Add support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS similar to the arm64 implementation. ftrace direct calls allow custom trampolines to be called into directly from function ftrace call sites, bypassing the ftrace trampoline completely. This functionality is currently utilized by BPF trampolines to hook into kernel function entries. Since we have limited relative branch range, we support ftrace direct calls through support for DYNAMIC_FTRACE_WITH_CALL_OPS. In this approach, ftrace trampoline is not entirely bypassed. Rather, it is re-purposed into a stub that reads direct_call field from the associated ftrace_ops structure and branches into that, if it is not NULL. For this, it is sufficient if we can ensure that the ftrace trampoline is reachable from all traceable functions. When multiple ftrace_ops are associated with a call site, we utilize a call back to set pt_regs->orig_gpr3 that can then be tested on the return path from the ftrace trampoline to branch into the direct caller. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-16-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
e717754f0b |
powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS
Implement support for DYNAMIC_FTRACE_WITH_CALL_OPS similar to the arm64 implementation. This works by patching-in a pointer to an associated ftrace_ops structure before each traceable function. If multiple ftrace_ops are associated with a call site, then a special ftrace_list_ops is used to enable iterating over all the registered ftrace_ops. If no ftrace_ops are associated with a call site, then a special ftrace_nop_ops structure is used to render the ftrace call as a no-op. ftrace trampoline can then read the associated ftrace_ops for a call site by loading from an offset from the LR, and branch directly to the associated function. The primary advantage with this approach is that we don't have to iterate over all the registered ftrace_ops for call sites that have a single ftrace_ops registered. This is the equivalent of implementing support for dynamic ftrace trampolines, which set up a special ftrace trampoline for each registered ftrace_ops and have individual call sites branch into those directly. A secondary advantage is that this gives us a way to add support for direct ftrace callers without having to resort to using stubs. The address of the direct call trampoline can be loaded from the ftrace_ops structure. To support this, we reserve a nop before each function on 32-bit powerpc. For 64-bit powerpc, two nops are reserved before each out-of-line stub. During ftrace activation, we update this location with the associated ftrace_ops pointer. Then, on ftrace entry, we load from this location and call into ftrace_ops->func(). For 64-bit powerpc, we ensure that the out-of-line stub area is doubleword aligned so that ftrace_ops address can be updated atomically. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-15-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
cf9bc0efcc |
powerpc64/ftrace: Support .text larger than 32MB with out-of-line stubs
We are restricted to a .text size of ~32MB when using out-of-line function profile sequence. Allow this to be extended up to the previous limit of ~64MB by reserving space in the middle of .text. A new config option CONFIG_PPC_FTRACE_OUT_OF_LINE_NUM_RESERVE is introduced to specify the number of function stubs that are reserved in .text. On boot, ftrace utilizes stubs from this area first before using the stub area at the end of .text. A ppc64le defconfig has ~44k functions that can be traced. A more conservative value of 32k functions is chosen as the default value of PPC_FTRACE_OUT_OF_LINE_NUM_RESERVE so that we do not allot more space than necessary by default. If building a kernel that only has 32k trace-able functions, we won't allot any more space at the end of .text during the pass on vmlinux.o. Otherwise, only the remaining functions get space for stubs at the end of .text. This default value should help cover a .text size of ~48MB in total (including space reserved at the end of .text which can cover up to 32MB), which should be sufficient for most common builds. For a very small kernel build, this can be set to 0. Or, this can be bumped up to a larger value to support vmlinux .text size up to ~64MB. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-14-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
eec37961a5 |
powerpc64/ftrace: Move ftrace sequence out of line
Function profile sequence on powerpc includes two instructions at the beginning of each function: mflr r0 bl ftrace_caller The call to ftrace_caller() gets nop'ed out during kernel boot and is patched in when ftrace is enabled. Given the sequence, we cannot return from ftrace_caller with 'blr' as we need to keep LR and r0 intact. This results in link stack (return address predictor) imbalance when ftrace is enabled. To address that, we would like to use a three instruction sequence: mflr r0 bl ftrace_caller mtlr r0 Further more, to support DYNAMIC_FTRACE_WITH_CALL_OPS, we need to reserve two instruction slots before the function. This results in a total of five instruction slots to be reserved for ftrace use on each function that is traced. Move the function profile sequence out-of-line to minimize its impact. To do this, we reserve a single nop at function entry using -fpatchable-function-entry=1 and add a pass on vmlinux.o to determine the total number of functions that can be traced. This is then used to generate a .S file reserving the appropriate amount of space for use as ftrace stubs, which is built and linked into vmlinux. On bootup, the stub space is split into separate stubs per function and populated with the proper instruction sequence. A pointer to the associated stub is maintained in dyn_arch_ftrace. For modules, space for ftrace stubs is reserved from the generic module stub space. This is restricted to and enabled by default only on 64-bit powerpc, though there are some changes to accommodate 32-bit powerpc. This is done so that 32-bit powerpc could choose to opt into this based on further tests and benchmarks. As an example, after this patch, kernel functions will have a single nop at function entry: <kernel_clone>: addis r2,r12,467 addi r2,r2,-16028 nop mfocrf r11,8 ... When ftrace is enabled, the nop is converted to an unconditional branch to the stub associated with that function: <kernel_clone>: addis r2,r12,467 addi r2,r2,-16028 b ftrace_ool_stub_text_end+0x11b28 mfocrf r11,8 ... The associated stub: <ftrace_ool_stub_text_end+0x11b28>: mflr r0 bl ftrace_caller mtlr r0 b kernel_clone+0xc ... This change showed an improvement of ~10% in null_syscall benchmark on a Power 10 system with ftrace enabled. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-13-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
ed6144656b |
powerpc/ftrace: Move ftrace stub used for init text before _einittext
Move the ftrace stub used to cover inittext before _einittext so that it is within kernel text, as seen through core_kernel_text(). This is required for a subsequent change to ftrace. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-9-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
1d59bd2fc0 |
powerpc/ftrace: Skip instruction patching if the instructions are the same
To simplify upcoming changes to ftrace, add a check to skip actual instruction patching if the old and new instructions are the same. We still validate that the instruction is what we expect, but don't actually patch the same instruction again. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-8-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
8b0dc1305e |
powerpc/ftrace: Remove pointer to struct module from dyn_arch_ftrace
Pointer to struct module is only relevant for ftrace records belonging to kernel modules. Having this field in dyn_arch_ftrace wastes memory for all ftrace records belonging to the kernel. Remove the same in favour of looking up the module from the ftrace record address, similar to other architectures. Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-7-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
c12cfe9dee |
powerpc/module_64: Convert #ifdef to IS_ENABLED()
Minor refactor for converting #ifdef to IS_ENABLED(). Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-6-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
654b3fa61b |
powerpc32/ftrace: Unify 32-bit and 64-bit ftrace entry code
On 32-bit powerpc, gcc generates a three instruction sequence for function profiling: mflr r0 stw r0, 4(r1) bl _mcount On kernel boot, the call to _mcount() is nop-ed out, to be patched back in when ftrace is actually enabled. The 'stw' instruction therefore is not necessary unless ftrace is enabled. Nop it out during ftrace init. When ftrace is enabled, we want the 'stw' so that stack unwinding works properly. Perform the same within the ftrace handler, similar to 64-bit powerpc. Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-5-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
161d62c2b0 |
powerpc64/ftrace: Nop out additional 'std' instruction emitted by gcc v5.x
Gcc v5.x emits a 3-instruction sequence for -mprofile-kernel: mflr r0 std r0, 16(r1) bl _mcount Gcc v6.x moved to a simpler 2-instruction sequence by removing the 'std' instruction. The store saved the return address in the LR save area in the caller stack frame for stack unwinding. However, with dynamic ftrace, we no longer have a call to _mcount on kernel boot when ftrace is not enabled. When ftrace is enabled, that store is performed within ftrace_caller(). As such, the additional 'std' instruction is redundant. Nop it out on kernel boot. With this change, we now use the same 2-instruction profiling sequence with both -mprofile-kernel, as well as -fpatchable-function-entry on 64-bit powerpc. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-4-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
be87d713ea |
powerpc/kprobes: Use ftrace to determine if a probe is at function entry
Rather than hard-coding the offset into a function to be used to determine if a kprobe is at function entry, use ftrace_location() to determine the ftrace location within the function and categorize all instructions till that offset to be function entry. For functions that cannot be traced, we fall back to using a fixed offset of 8 (two instructions) to categorize a probe as being at function entry for 64-bit elfv2, unless we are using pcrel. Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-3-hbathini@linux.ibm.com |
||
|
Naveen N Rao
|
0b9846529e |
powerpc/trace: Account for -fpatchable-function-entry support by toolchain
So far, we have relied on the fact that gcc supports both -mprofile-kernel, as well as -fpatchable-function-entry, and clang supports neither. Our Makefile only checks for CONFIG_MPROFILE_KERNEL to decide which files to build. Clang has a feature request out [*] to implement -fpatchable-function-entry, and is unlikely to support -mprofile-kernel. Update our Makefile checks so that we pick up the correct files to build once clang picks up support for -fpatchable-function-entry. [*] https://github.com/llvm/llvm-project/issues/57031 Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241030070850.1361304-2-hbathini@linux.ibm.com |
||
|
Usama Arif
|
b2473a3597 |
of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify
__pa() is only intended to be used for linear map addresses and using
it for initial_boot_params which is in fixmap for arm64 will give an
incorrect value. Hence save the physical address when it is known at
boot time when calling early_init_dt_scan for arm64 and use it at kexec
time instead of converting the virtual address using __pa().
Note that arm64 doesn't need the FDT region reserved in the DT as the
kernel explicitly reserves the passed in FDT. Therefore, only a debug
warning is fixed with this change.
Reported-by: Breno Leitao <leitao@debian.org>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Usama Arif <usamaarif642@gmail.com>
Fixes:
|
||
|
Michael Ellerman
|
62f8f307c8 |
powerpc/64: Remove maple platform
The maple platform was added in 2004 [1], to support the "Maple" 970FX evaluation board. It was later used for IBM JS20/JS21 machines, as well as the Bimini machine, aka "Yellow Dog Powerstation". Sadly all those machines have passed into memory, and there's been no evidence for years that anyone is still using any of them. Remove the platform and related code. It can always be reinstated if there's interest. Note that this has no impact on support for 970FX based Power Macs. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux-fullhistory.git/commit/?id=f0d068d65c5e555ffcfbc189de32598f6f00770c Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241013102957.548291-1-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
b23b9edf64 |
powerpc/machdep: Drop include of dma-mapping.h
Drop the include of dma-mapping.h in machdep.h, replace it with forward declarations of struct device and struct pci_dev, and include time64.h and page.h which are required for time64_t and pgprot_t respectively. Add direct includes of some other headers to some files that were getting them via machdep.h. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/20241009051826.132805-2-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
5e296fc37e |
powerpc/64: Drop IPI_PRIORITY from asm-offsets
The last use of IPI_PRIORITY in asm was removed in commit
|
||
|
Ritesh Harjani (IBM)
|
05b94cae1c |
powerpc/fadump: Move fadump_cma_init to setup_arch() after initmem_init()
During early init CMA_MIN_ALIGNMENT_BYTES can be PAGE_SIZE,
since pageblock_order is still zero and it gets initialized
later during initmem_init() e.g.
setup_arch() -> initmem_init() -> sparse_init() -> set_pageblock_order()
One such use case where this causes issue is -
early_setup() -> early_init_devtree() -> fadump_reserve_mem() -> fadump_cma_init()
This causes CMA memory alignment check to be bypassed in
cma_init_reserved_mem(). Then later cma_activate_area() can hit
a VM_BUG_ON_PAGE(pfn & ((1 << order) - 1)) if the reserved memory
area was not pageblock_order aligned.
Fix it by moving the fadump_cma_init() after initmem_init(),
where other such cma reservations also gets called.
<stack trace>
==============
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10010
flags: 0x13ffff800000000(node=1|zone=0|lastcpupid=0x7ffff) CMA
raw: 013ffff800000000 5deadbeef0000100 5deadbeef0000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(pfn & ((1 << order) - 1))
------------[ cut here ]------------
kernel BUG at mm/page_alloc.c:778!
Call Trace:
__free_one_page+0x57c/0x7b0 (unreliable)
free_pcppages_bulk+0x1a8/0x2c8
free_unref_page_commit+0x3d4/0x4e4
free_unref_page+0x458/0x6d0
init_cma_reserved_pageblock+0x114/0x198
cma_init_reserved_areas+0x270/0x3e0
do_one_initcall+0x80/0x2f8
kernel_init_freeable+0x33c/0x530
kernel_init+0x34/0x26c
ret_from_kernel_user_thread+0x14/0x1c
Fixes:
|
||
|
Ritesh Harjani (IBM)
|
6faeac507b |
powerpc/fadump: Reserve page-aligned boot_memory_size during fadump_reserve_mem
This patch refactors all CMA related initialization and alignment code to within fadump_cma_init() which gets called in the end. This also means that we keep [reserve_dump_area_start, boot_memory_size] page aligned during fadump_reserve_mem(). Then later in fadump_cma_init() we extract the aligned chunk and provide it to CMA. This inherently also fixes an issue in the current code where the reserve_dump_area_start is not aligned when the physical memory can have holes and the suitable chunk starts at an unaligned boundary. After this we should be able to call fadump_cma_init() independently later in setup_arch() where pageblock_order is non-zero. Suggested-by: Sourabh Jain <sourabhjain@linux.ibm.com> Acked-by: Hari Bathini <hbathini@linux.ibm.com> Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/805d6b900968fb9402ad8f4e4775597db42085c4.1729146153.git.ritesh.list@gmail.com |
||
|
Ritesh Harjani (IBM)
|
adfaec30ff |
powerpc/fadump: Refactor and prepare fadump_cma_init for late init
We anyway don't use any return values from fadump_cma_init(). Since fadump_reserve_mem() from where fadump_cma_init() gets called today, already has the required checks. This patch makes this function return type as void. Let's also handle extra cases like return if fadump_supported is false or dump_active, so that in later patches we can call fadump_cma_init() separately from setup_arch(). Acked-by: Hari Bathini <hbathini@linux.ibm.com> Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/a2afc3d6481a87a305e89cfc4a3f3d2a0b8ceab3.1729146153.git.ritesh.list@gmail.com |
||
|
Christophe Leroy
|
4e3fa1aecb |
powerpc/vdso: Implement __arch_get_vdso_rng_data()
VDSO time functions do not call any other function, so they don't need to save/restore LR. However, retrieving the address of VDSO data page requires using LR hence saving then restoring it, which can be heavy on some CPUs. On the other hand, VDSO functions on powerpc are not standard functions and require a wrapper function to call C VDSO functions. And that wrapper has to save and restore LR in order to call the C VDSO function, so retrieving VDSO data page address in that wrapper doesn't require additional save/restore of LR. For random VDSO functions it is a bit different. Because the function calls __arch_chacha20_blocks_nostack(), it saves and restores LR. Retrieving VDSO data page address can then be done there without additional save/restore of LR. So lets implement __arch_get_vdso_rng_data() and simplify the wrapper. It starts paving the way for the day powerpc will implement a more standard ABI for VDSO functions. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/a1a9bd0df508f1b5c04684b7366940577dfc6262.1727858295.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
c39b1dcf05 |
powerpc/vdso: Add a page for non-time data
The page containing VDSO time data is swapped with the one containing TIME namespace data when a process uses a non-root time namespace. For other data like powerpc specific data and RNG data, it means tracking whether time namespace is the root one or not to know which page to use. Simplify the logic behind by moving time data out of first data page so that the first data page which contains everything else always remains the first page. Time data is in the second or third page depending on selected time namespace. While we are playing with get_datapage macro, directly take into account the data offset inside the macro instead of adding that offset afterwards. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://patch.msgid.link/0557d3ec898c1d0ea2fc59fa8757618e524c5d94.1727858295.git.christophe.leroy@csgroup.eu |
||
|
Anna-Maria Behnsen
|
b7f0eb8c9b |
powerpc/rtas: Use fsleep() to minimize additional sleep duration
When commit
|
||
|
Thomas Weißschuh
|
d93948d3ce |
powerpc/vdso: Remove timekeeper includes
Since the generic VDSO clock mode storage is used, this header file is unused and can be removed. This avoids including a non-VDSO header while building the VDSO, which can lead to compilation errors. Also drop the comment which is out of date and in the wrong place. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241010-vdso-generic-arch_update_vsyscall-v1-4-7fe5a3ea4382@linutronix.de |
||
|
Christophe Leroy
|
8956c582ac |
powerpc/8xx: Fix kernel DTLB miss on dcbz
Following OOPS is encountered while loading test_bpf module on powerpc 8xx: [ 218.835567] BUG: Unable to handle kernel data access on write at 0xcb000000 [ 218.842473] Faulting instruction address: 0xc0017a80 [ 218.847451] Oops: Kernel access of bad area, sig: 11 [#1] [ 218.852854] BE PAGE_SIZE=16K PREEMPT CMPC885 [ 218.857207] SAF3000 DIE NOTIFICATION [ 218.860713] Modules linked in: test_bpf(+) test_module [ 218.865867] CPU: 0 UID: 0 PID: 527 Comm: insmod Not tainted 6.11.0-s3k-dev-09856-g3de3d71ae2e6-dirty #1280 [ 218.875546] Hardware name: MIAE 8xx 0x500000 CMPC885 [ 218.880521] NIP: c0017a80 LR: |
||
|
Steven Rostedt
|
7888af4166 |
ftrace: Make ftrace_regs abstract from direct use
ftrace_regs was created to hold registers that store information to save function parameters, return value and stack. Since it is a subset of pt_regs, it should only be used by its accessor functions. But because pt_regs can easily be taken from ftrace_regs (on most archs), it is tempting to use it directly. But when running on other architectures, it may fail to build or worse, build but crash the kernel! Instead, make struct ftrace_regs an empty structure and have the architectures define __arch_ftrace_regs and all the accessor functions will typecast to it to get to the actual fields. This will help avoid usage of ftrace_regs directly. Link: https://lore.kernel.org/all/20241007171027.629bdafd@gandalf.local.home/ Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org> Cc: "x86@kernel.org" <x86@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Naveen N Rao <naveen@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/20241008230628.958778821@goodmis.org Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390 Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Jason A. Donenfeld
|
4b058c9f28 |
powerpc/vdso: allow r30 in vDSO code generation of getrandom
For gettimeofday, -ffixed-r30 was passed to work around a bug in Go
code, where the vDSO trampoline forgot to save and restore this register
across function calls. But Go requires a different trampoline for every
call, and there's no reason that new Go code needs to be broken and add
more bugs. So remove -ffixed-r30 for getrandom.
Fixes:
|
||
|
Linus Torvalds
|
4ffc458083 |
powerpc fixes for 6.12 #2
- Fix build error in vdso32 when building 64-bit with COMPAT=y and -Os. - Fix build error in pseries EEH when CONFIG_DEBUG_FS is not set. Thanks to: Christophe Leroy, Narayana Murty N, Christian Zigotzky, Ritesh Harjani. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRjvi15rv0TSTaE+SIF0oADX8seIQUCZvPfwQAKCRAF0oADX8se IeqKAPkBZJBXheDywa0aZ1hIKfwB2mWeAMgZLb1AhWeAGpJMBAEA9LtZbM4KhQHG r2JCuHtV7rDyTG04+97V/K4M2iQSsgg= =cygk -----END PGP SIGNATURE----- Merge tag 'powerpc-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix build error in vdso32 when building 64-bit with COMPAT=y and -Os - Fix build error in pseries EEH when CONFIG_DEBUG_FS is not set Thanks to Christophe Leroy, Narayana Murty N, Christian Zigotzky, and Ritesh Harjani. * tag 'powerpc-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries/eeh: move pseries_eeh_err_inject() outside CONFIG_DEBUG_FS block powerpc/vdso32: Fix use of crtsavres for PPC64 |
||
|
Linus Torvalds
|
617a814f14 |
ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
"Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
"Some cleanups for shmem" from Baolin Wang. No functional changes - mode
code reuse, better function naming, logic simplifications.
"mm: some small page fault cleanups" from Josef Bacik. No functional
changes - code cleanups only.
"Various memory tiering fixes" from Zi Yan. A small fix and a little
cleanup.
"mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
"Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt. This
is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at all
used 16k. Useful for some system tuning things, but partivularly useful
for "the dynamic kernel stack project".
"kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
Teaches kmemleak to detect leaksage of percpu memory.
"mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
"mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
Hildenbrand. Improves PTE/PMD splitlock detection, makes powerpc/8xx work
correctly by design rather than by accident.
"mm: remove arch_make_page_accessible()" from David Hildenbrand. Some
folio conversions which make arch_make_page_accessible() unneeded.
"mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
Cleans up and fixes our handling of the resetting of the cgroup/process
peak-memory-use detector.
"Make core VMA operations internal and testable" from Lorenzo Stoakes.
Rationalizaion and encapsulation of the VMA manipulation APIs. With a
view to better enable testing of the VMA functions, even from a
userspace-only harness.
"mm: zswap: fixes for global shrinker" from Takero Funaki. Fix issues in
the zswap global shrinker, resulting in improved performance.
"mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill in
some missing info in /proc/zoneinfo.
"mm: replace follow_page() by folio_walk" from David Hildenbrand. Code
cleanups and rationalizations (conversion to folio_walk()) resulting in
the removal of follow_page().
"improving dynamic zswap shrinker protection scheme" from Nhat Pham. Some
tuning to improve zswap's dynamic shrinker. Significant reductions in
swapin and improvements in performance are shown.
"mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
Improvements to the new unaccepted memory feature,
"mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on DAX
PUDs. This was missing, although nobody seems to have notied yet.
"Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
Cleanups and modest performance improvements for the maple tree library
code.
"memcg: further decouple v1 code from v2" from Shakeel Butt. Move more
cgroup v1 remnants away from the v2 memcg code.
"memcg: initiate deprecation of v1 features" from Shakeel Butt. Adds
various warnings telling users that memcg v1 features are deprecated.
"mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
Greatly improves the success rate of the mTHP swap allocation.
"mm: introduce numa_memblks" from Mike Rapoport. Moves various disparate
per-arch implementations of numa_memblk code into generic code.
"mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
"support large folio swap-out and swap-in for shmem" from Baolin Wang.
With this series we no longer split shmem large folios into simgle-page
folios when swapping out shmem.
"mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice performance
improvements and code reductions for gigantic folios.
"support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
"mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
"Increase the number of bits available in page_type" from Matthew Wilcox.
Increases the number of bits available in page_type!
"Simplify the page flags a little" from Matthew Wilcox. Many legacy page
flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
"mm: store zero pages to be swapped out in a bitmap" from Usama Arif. An
optimization which permits us to avoid writing/reading zero-filled zswap
pages to backing store.
"Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race window
which occurs when a MAP_FIXED operqtion is occurring during an unrelated
vma tree walk.
"mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of the
vma_merge() functionality, making ot cleaner, more testable and better
tested.
"misc fixups for DAMON {self,kunit} tests" from SeongJae Park. Minor
fixups of DAMON selftests and kunit tests.
"mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang. Code
cleanups and folio conversions.
"Shmem mTHP controls and stats improvements" from Ryan Roberts. Cleanups
for shmem controls and stats.
"mm: count the number of anonymous THPs per size" from Barry Song. Expose
additional anon THP stats to userspace for improved tuning.
"mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
conversions and removal of now-unused page-based APIs.
"replace per-quota region priorities histogram buffer with per-context
one" from SeongJae Park. DAMON histogram rationalization.
"Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
Park. DAMON documentation updates.
"mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
related doc and warn" from Jason Wang: fixes usage of page allocator
__GFP_NOFAIL and GFP_ATOMIC flags.
"mm: split underused THPs" from Yu Zhao. Improve THP=always policy - this
was overprovisioning THPs in sparsely accessed memory areas.
"zram: introduce custom comp backends API" frm Sergey Senozhatsky. Add
support for zram run-time compression algorithm tuning.
"mm: Care about shadow stack guard gap when getting an unmapped area" from
Mark Brown. Fix up the various arch_get_unmapped_area() implementations
to better respect guard areas.
"Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability of
mem_cgroup_iter() and various code cleanups.
"mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
"resource: Fix region_intersects() vs add_memory_driver_managed()" from
Huang Ying. Fix a bug in region_intersects() for systems with CXL memory.
"mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches a
couple more code paths to correctly recover from the encountering of
poisoned memry.
"mm: enable large folios swap-in support" from Barry Song. Support the
swapin of mTHP memory into appropriately-sized folios, rather than into
single-page folios.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZu1BBwAKCRDdBJ7gKXxA
jlWNAQDYlqQLun7bgsAN4sSvi27VUuWv1q70jlMXTfmjJAvQqwD/fBFVR6IOOiw7
AkDbKWP2k0hWPiNJBGwoqxdHHx09Xgo=
=s0T+
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Along with the usual shower of singleton patches, notable patch series
in this pull request are:
- "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
- "Some cleanups for shmem" from Baolin Wang. No functional changes -
mode code reuse, better function naming, logic simplifications.
- "mm: some small page fault cleanups" from Josef Bacik. No
functional changes - code cleanups only.
- "Various memory tiering fixes" from Zi Yan. A small fix and a
little cleanup.
- "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
- "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
Butt. This is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at
all used 16k. Useful for some system tuning things, but
partivularly useful for "the dynamic kernel stack project".
- "kmemleak: support for percpu memory leak detect" from Pavel
Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.
- "mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
- "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
David Hildenbrand. Improves PTE/PMD splitlock detection, makes
powerpc/8xx work correctly by design rather than by accident.
- "mm: remove arch_make_page_accessible()" from David Hildenbrand.
Some folio conversions which make arch_make_page_accessible()
unneeded.
- "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
Finkel. Cleans up and fixes our handling of the resetting of the
cgroup/process peak-memory-use detector.
- "Make core VMA operations internal and testable" from Lorenzo
Stoakes. Rationalizaion and encapsulation of the VMA manipulation
APIs. With a view to better enable testing of the VMA functions,
even from a userspace-only harness.
- "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
issues in the zswap global shrinker, resulting in improved
performance.
- "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
in some missing info in /proc/zoneinfo.
- "mm: replace follow_page() by folio_walk" from David Hildenbrand.
Code cleanups and rationalizations (conversion to folio_walk())
resulting in the removal of follow_page().
- "improving dynamic zswap shrinker protection scheme" from Nhat
Pham. Some tuning to improve zswap's dynamic shrinker. Significant
reductions in swapin and improvements in performance are shown.
- "mm: Fix several issues with unaccepted memory" from Kirill
Shutemov. Improvements to the new unaccepted memory feature,
- "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
DAX PUDs. This was missing, although nobody seems to have notied
yet.
- "Introduce a store type enum for the Maple tree" from Sidhartha
Kumar. Cleanups and modest performance improvements for the maple
tree library code.
- "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
more cgroup v1 remnants away from the v2 memcg code.
- "memcg: initiate deprecation of v1 features" from Shakeel Butt.
Adds various warnings telling users that memcg v1 features are
deprecated.
- "mm: swap: mTHP swap allocator base on swap cluster order" from
Chris Li. Greatly improves the success rate of the mTHP swap
allocation.
- "mm: introduce numa_memblks" from Mike Rapoport. Moves various
disparate per-arch implementations of numa_memblk code into generic
code.
- "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
- "support large folio swap-out and swap-in for shmem" from Baolin
Wang. With this series we no longer split shmem large folios into
simgle-page folios when swapping out shmem.
- "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
performance improvements and code reductions for gigantic folios.
- "support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
- "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
- "Increase the number of bits available in page_type" from Matthew
Wilcox. Increases the number of bits available in page_type!
- "Simplify the page flags a little" from Matthew Wilcox. Many legacy
page flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
- "mm: store zero pages to be swapped out in a bitmap" from Usama
Arif. An optimization which permits us to avoid writing/reading
zero-filled zswap pages to backing store.
- "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
window which occurs when a MAP_FIXED operqtion is occurring during
an unrelated vma tree walk.
- "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
the vma_merge() functionality, making ot cleaner, more testable and
better tested.
- "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
Minor fixups of DAMON selftests and kunit tests.
- "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
Code cleanups and folio conversions.
- "Shmem mTHP controls and stats improvements" from Ryan Roberts.
Cleanups for shmem controls and stats.
- "mm: count the number of anonymous THPs per size" from Barry Song.
Expose additional anon THP stats to userspace for improved tuning.
- "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
folio conversions and removal of now-unused page-based APIs.
- "replace per-quota region priorities histogram buffer with
per-context one" from SeongJae Park. DAMON histogram
rationalization.
- "Docs/damon: update GitHub repo URLs and maintainer-profile" from
SeongJae Park. DAMON documentation updates.
- "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
improve related doc and warn" from Jason Wang: fixes usage of page
allocator __GFP_NOFAIL and GFP_ATOMIC flags.
- "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
This was overprovisioning THPs in sparsely accessed memory areas.
- "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
Add support for zram run-time compression algorithm tuning.
- "mm: Care about shadow stack guard gap when getting an unmapped
area" from Mark Brown. Fix up the various arch_get_unmapped_area()
implementations to better respect guard areas.
- "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
of mem_cgroup_iter() and various code cleanups.
- "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
- "resource: Fix region_intersects() vs add_memory_driver_managed()"
from Huang Ying. Fix a bug in region_intersects() for systems with
CXL memory.
- "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
a couple more code paths to correctly recover from the encountering
of poisoned memry.
- "mm: enable large folios swap-in support" from Barry Song. Support
the swapin of mTHP memory into appropriately-sized folios, rather
than into single-page folios"
* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
zram: free secondary algorithms names
uprobes: turn xol_area->pages[2] into xol_area->page
uprobes: introduce the global struct vm_special_mapping xol_mapping
Revert "uprobes: use vm_special_mapping close() functionality"
mm: support large folios swap-in for sync io devices
mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
set_memory: add __must_check to generic stubs
mm/vma: return the exact errno in vms_gather_munmap_vmas()
memcg: cleanup with !CONFIG_MEMCG_V1
mm/show_mem.c: report alloc tags in human readable units
mm: support poison recovery from copy_present_page()
mm: support poison recovery from do_cow_fault()
resource, kunit: add test case for region_intersects()
resource: make alloc_free_mem_region() works for iomem_resource
mm: z3fold: deprecate CONFIG_Z3FOLD
vfio/pci: implement huge_fault support
mm/arm64: support large pfn mappings
mm/x86: support large pfn mappings
...
|
||
|
Narayana Murty N
|
3af2e2f68c |
powerpc/pseries/eeh: move pseries_eeh_err_inject() outside CONFIG_DEBUG_FS block
Makes pseries_eeh_err_inject() available even when debugfs
is disabled (CONFIG_DEBUG_FS=n). It moves eeh_debugfs_break_device()
and eeh_pe_inject_mmio_error() out of the CONFIG_DEBUG_FS block
and renames it as eeh_break_device().
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202409170509.VWC6jadC-lkp@intel.com/
Fixes:
|
||
|
Linus Torvalds
|
de848da12f |
drm next for 6.12-rc1
string: - add mem_is_zero() core: - support more device numbers - use XArray for minor ids - add backlight constants - Split dma fence array creation into alloc and arm fbdev: - remove usage of old fbdev hooks kms: - Add might_fault() to drm_modeset_lock priming - Add dynamic per-crtc vblank configuration support dma-buf: - docs cleanup buddy: - Add start address support for trim function printk: - pass description to kmsg_dump scheduler; - Remove full_recover from drm_sched_start ttm: - Make LRU walk restartable after dropping locks - Allow direct reclaim to allocate local memory panic: - add display QR code (in rust) displayport: - mst: GUID improvements bridge: - Silence error message on -EPROBE_DEFER - analogix: Clean aup - bridge-connector: Fix double free - lt6505: Disable interrupt when powered off - tc358767: Make default DP port preemphasis configurable - lt9611uxc: require DRM_BRIDGE_ATTACH_NO_CONNECTOR - anx7625: simplify OF array handling - dw-hdmi: simplify clock handling - lontium-lt8912b: fix mode validation - nwl-dsi: fix mode vsync/hsync polarity xe: - Enable LunarLake and Battlemage support - Introducing Xe2 ccs modifiers for integrated and discrete graphics - rename xe perf to xe observation - use wb caching on DGFX for system memory - add fence timeouts - Lunar Lake graphics/media/display workarounds - Battlemage workarounds - Battlemage GSC support - GSC and HuC fw updates for LL/BM - use dma_fence_chain_free - refactor hw engine lookup and mmio access - enable priority mem read for Xe2 - Add first GuC BMG fw - fix dma-resv lock - Fix DGFX display suspend/resume - Use xe_managed for kernel BOs - Use reserved copy engine for user binds on faulting devices - Allow mixing dma-fence jobs and long-running faulting jobs - fix media TLB invalidation - fix rpm in TTM swapout path - track resources and VF state by PF i915: - Type-C programming fix for MTL+ - FBC cleanup - Calc vblank delay more accurately - On DP MST, Enable LT fallback for UHBR<->non-UHBR rates - Fix DP LTTPR detection - limit relocations to INT_MAX - fix long hangs in buddy allocator on DG2/A380 amdgpu: - Per-queue reset support - SDMA devcoredump support - DCN 4.0.1 updates - GFX12/VCN4/JPEG4 updates - Convert vbios embedded EDID to drm_edid - GFX9.3/9.4 devcoredump support - process isolation framework for GFX 9.4.3/4 - take IOMMU mappings into account for P2P DMA amdkfd: - CRIU fixes - HMM fix - Enable process isolation support for GFX 9.4.3/4 - Allow users to target recommended SDMA engines - KFD support for targetting queues on recommended SDMA engines radeon: - remove .load and drm_dev_alloc - Fix vbios embedded EDID size handling - Convert vbios embedded EDID to drm_edid - Use GEM references instead of TTM - r100 cp init cleanup - Fix potential overflows in evergreen CS offset tracking msm: - DPU: - implement DP/PHY mapping on SC8180X - Enable writeback on SM8150, SC8180X, SM6125, SM6350 - DP: - Enable widebus on all relevant chipsets - MSM8998 HDMI support - GPU: - A642L speedbin support - A615/A306/A621 support - A7xx devcoredump support ast: - astdp: Support AST2600 with VGA - Clean up HPD - Fix timeout loop for DP link training - reorganize output code by type (VGA, DP, etc) - convert to struct drm_edid - fix BMC handling for all outputs exynos: - drop stale MAINTAINERS pattern - constify struct loongson: - use GEM refcount over TTM mgag200: - Improve BMC handling - Support VBLANK intterupts - transparently support BMC outputs nouveau: - Refactor and clean up internals - Use GEM refcount over TTM's gm12u320: - convert to struct drm_edid gma500: - update i2c terms lcdif: - pixel clock fix host1x: - fix syncpoint IRQ during resume - use iommu_paging_domain_alloc() imx: - ipuv3: convert to struct drm_edid omapdrm: - improve error handling - use common helper for_each_endpoint_of_node() panel: - add support for BOE TV101WUM-LL2 plus DT bindings - novatek-nt35950: improve error handling - nv3051d: improve error handling - panel-edp: add support for BOE NE140WUM-N6G; revert support for SDC ATNA45AF01 - visionox-vtdr6130: improve error handling; use devm_regulator_bulk_get_const() - boe-th101mb31ig002: Support for starry-er88577 MIPI-DSI panel plus DT; Fix porch parameter - edp: Support AOU B116XTN02.3, AUO B116XAN06.1, AOU B116XAT04.1, BOE NV140WUM-N41, BOE NV133WUM-N63, BOE NV116WHM-A4D, CMN N116BCA-EA2, CMN N116BCP-EA2, CSW MNB601LS1-4 - himax-hx8394: Support Microchip AC40T08A MIPI Display panel plus DT - ilitek-ili9806e: Support Densitron DMT028VGHMCMI-1D TFT plus DT - jd9365da: Support Melfas lmfbx101117480 MIPI-DSI panel plus DT; Refactor for code sharing - panel-edp: fix name for HKC MB116AN01 - jd9365da: fix "exit sleep" commands - jdi-fhd-r63452: simplify error handling with DSI multi-style helpers - mantix-mlaf057we51: simplify error handling with DSI multi-style helpers - simple: support Innolux G070ACE-LH3 plus DT bindings support On Tat Industrial Company KD50G21-40NT-A1 plus DT bindings - st7701: decouple DSI and DRM code add SPI support support Anbernic RG28XX plus DT bindings mediatek: - support alpha blending - remove cl in struct cmdq_pkt - ovl adaptor fix - add power domain binding for mediatek DPI controller renesas: - rz-du: add support for RZ/G2UL plus DT bindings rockchip: - Improve DP sink-capability reporting - dw_hdmi: Support 4k@60Hz - vop: Support RGB display on Rockchip RK3066; Support 4096px width sti: - convert to struct drm_edid stm: - Avoid UAF wih managed plane and CRTC helpers - Fix module owner - Fix error handling in probe - Depend on COMMON_CLK - ltdc: Fix transparency after disabling plane; Remove unused interrupt tegra: - gr3d: improve PM domain handling - convert to struct drm_edid - Call drm_atomic_helper_shutdown() vc4: - fix PM during detect - replace DRM_ERROR() with drm_error() - v3d: simplify clock retrieval v3d: - Clean up perfmon virtio: - add DRM capset -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmbq43gACgkQDHTzWXnE hr4+lg/+O/r41E7ioitcM0DWeWem0dTlvQr41pJ8jujHvw+bXNdg0BMGWtsTyTLA eOft2AwofsFjg+O7l8IFXOT37mQLdIdfjb3+w5brI198InL3OWC3QV8ZSwY9VGET n8crO9jFoxNmHZnFniBZbtI6egTyl6H+2ey3E0MTnKiPUKZQvsK/4+x532yVLPob UUOze5wcjyGZc7LJEIZPohPVneCb9ki7sabDQqh4cxIQ0Eg+nqPpWjYM4XVd+lTS 8QmssbR49LrJ7z9m90qVE+8TjYUCn+ChDPMs61KZAAnc8k++nK41btjGZ23mDKPb YEguahCYthWJ4U8K18iXBPnLPxZv5+harQ8OIWAUYqdIOWSXHozvuJ2Z84eHV13a 9mQ5vIymXang8G1nEXwX/vml9uhVhBCeWu3qfdse2jfaTWYUb1YzhqUoFvqI0R0K 8wT03MyNdx965CSqAhpH5Jd559ueZmpd+jsHOfhAS+1gxfD6NgoPXv7lpnMUmGWX SnaeC9RLD4cgy7j2Swo7TEqQHrvK5XhZSwX94kU6RPmFE5RRKqWgFVQmwuikDMId UpNqDnPT5NL2UX4TNG4V4coyTXvKgVcSB9TA7j8NSLfwdGHhiz73pkYosaZXKyxe u6qKMwMONfZiT20nhD7RhH0AFnnKosAcO14dhn0TKFZPY6Ce9O8= =7jR+ -----END PGP SIGNATURE----- Merge tag 'drm-next-2024-09-19' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "This adds a couple of patches outside the drm core, all should be acked appropriately, the string and pstore ones are the main ones that come to mind. Otherwise it's the usual drivers, xe is getting enabled by default on some new hardware, we've changed the device number handling to allow more devices, and we added some optional rust code to create QR codes in the panic handler, an idea first suggested I think 10 years ago :-) string: - add mem_is_zero() core: - support more device numbers - use XArray for minor ids - add backlight constants - Split dma fence array creation into alloc and arm fbdev: - remove usage of old fbdev hooks kms: - Add might_fault() to drm_modeset_lock priming - Add dynamic per-crtc vblank configuration support dma-buf: - docs cleanup buddy: - Add start address support for trim function printk: - pass description to kmsg_dump scheduler: - Remove full_recover from drm_sched_start ttm: - Make LRU walk restartable after dropping locks - Allow direct reclaim to allocate local memory panic: - add display QR code (in rust) displayport: - mst: GUID improvements bridge: - Silence error message on -EPROBE_DEFER - analogix: Clean aup - bridge-connector: Fix double free - lt6505: Disable interrupt when powered off - tc358767: Make default DP port preemphasis configurable - lt9611uxc: require DRM_BRIDGE_ATTACH_NO_CONNECTOR - anx7625: simplify OF array handling - dw-hdmi: simplify clock handling - lontium-lt8912b: fix mode validation - nwl-dsi: fix mode vsync/hsync polarity xe: - Enable LunarLake and Battlemage support - Introducing Xe2 ccs modifiers for integrated and discrete graphics - rename xe perf to xe observation - use wb caching on DGFX for system memory - add fence timeouts - Lunar Lake graphics/media/display workarounds - Battlemage workarounds - Battlemage GSC support - GSC and HuC fw updates for LL/BM - use dma_fence_chain_free - refactor hw engine lookup and mmio access - enable priority mem read for Xe2 - Add first GuC BMG fw - fix dma-resv lock - Fix DGFX display suspend/resume - Use xe_managed for kernel BOs - Use reserved copy engine for user binds on faulting devices - Allow mixing dma-fence jobs and long-running faulting jobs - fix media TLB invalidation - fix rpm in TTM swapout path - track resources and VF state by PF i915: - Type-C programming fix for MTL+ - FBC cleanup - Calc vblank delay more accurately - On DP MST, Enable LT fallback for UHBR<->non-UHBR rates - Fix DP LTTPR detection - limit relocations to INT_MAX - fix long hangs in buddy allocator on DG2/A380 amdgpu: - Per-queue reset support - SDMA devcoredump support - DCN 4.0.1 updates - GFX12/VCN4/JPEG4 updates - Convert vbios embedded EDID to drm_edid - GFX9.3/9.4 devcoredump support - process isolation framework for GFX 9.4.3/4 - take IOMMU mappings into account for P2P DMA amdkfd: - CRIU fixes - HMM fix - Enable process isolation support for GFX 9.4.3/4 - Allow users to target recommended SDMA engines - KFD support for targetting queues on recommended SDMA engines radeon: - remove .load and drm_dev_alloc - Fix vbios embedded EDID size handling - Convert vbios embedded EDID to drm_edid - Use GEM references instead of TTM - r100 cp init cleanup - Fix potential overflows in evergreen CS offset tracking msm: - DPU: - implement DP/PHY mapping on SC8180X - Enable writeback on SM8150, SC8180X, SM6125, SM6350 - DP: - Enable widebus on all relevant chipsets - MSM8998 HDMI support - GPU: - A642L speedbin support - A615/A306/A621 support - A7xx devcoredump support ast: - astdp: Support AST2600 with VGA - Clean up HPD - Fix timeout loop for DP link training - reorganize output code by type (VGA, DP, etc) - convert to struct drm_edid - fix BMC handling for all outputs exynos: - drop stale MAINTAINERS pattern - constify struct loongson: - use GEM refcount over TTM mgag200: - Improve BMC handling - Support VBLANK intterupts - transparently support BMC outputs nouveau: - Refactor and clean up internals - Use GEM refcount over TTM's gm12u320: - convert to struct drm_edid gma500: - update i2c terms lcdif: - pixel clock fix host1x: - fix syncpoint IRQ during resume - use iommu_paging_domain_alloc() imx: - ipuv3: convert to struct drm_edid omapdrm: - improve error handling - use common helper for_each_endpoint_of_node() panel: - add support for BOE TV101WUM-LL2 plus DT bindings - novatek-nt35950: improve error handling - nv3051d: improve error handling - panel-edp: - add support for BOE NE140WUM-N6G - revert support for SDC ATNA45AF01 - visionox-vtdr6130: - improve error handling - use devm_regulator_bulk_get_const() - boe-th101mb31ig002: - Support for starry-er88577 MIPI-DSI panel plus DT - Fix porch parameter - edp: Support AOU B116XTN02.3, AUO B116XAN06.1, AOU B116XAT04.1, BOE NV140WUM-N41, BOE NV133WUM-N63, BOE NV116WHM-A4D, CMN N116BCA-EA2, CMN N116BCP-EA2, CSW MNB601LS1-4 - himax-hx8394: Support Microchip AC40T08A MIPI Display panel plus DT - ilitek-ili9806e: Support Densitron DMT028VGHMCMI-1D TFT plus DT - jd9365da: - Support Melfas lmfbx101117480 MIPI-DSI panel plus DT - Refactor for code sharing - panel-edp: fix name for HKC MB116AN01 - jd9365da: fix "exit sleep" commands - jdi-fhd-r63452: simplify error handling with DSI multi-style helpers - mantix-mlaf057we51: simplify error handling with DSI multi-style helpers - simple: - support Innolux G070ACE-LH3 plus DT bindings - support On Tat Industrial Company KD50G21-40NT-A1 plus DT bindings - st7701: - decouple DSI and DRM code - add SPI support - support Anbernic RG28XX plus DT bindings mediatek: - support alpha blending - remove cl in struct cmdq_pkt - ovl adaptor fix - add power domain binding for mediatek DPI controller renesas: - rz-du: add support for RZ/G2UL plus DT bindings rockchip: - Improve DP sink-capability reporting - dw_hdmi: Support 4k@60Hz - vop: - Support RGB display on Rockchip RK3066 - Support 4096px width sti: - convert to struct drm_edid stm: - Avoid UAF wih managed plane and CRTC helpers - Fix module owner - Fix error handling in probe - Depend on COMMON_CLK - ltdc: - Fix transparency after disabling plane - Remove unused interrupt tegra: - gr3d: improve PM domain handling - convert to struct drm_edid - Call drm_atomic_helper_shutdown() vc4: - fix PM during detect - replace DRM_ERROR() with drm_error() - v3d: simplify clock retrieval v3d: - Clean up perfmon virtio: - add DRM capset" * tag 'drm-next-2024-09-19' of https://gitlab.freedesktop.org/drm/kernel: (1326 commits) drm/xe: Fix missing conversion to xe_display_pm_runtime_resume drm/xe/xe2hpg: Add Wa_15016589081 drm/xe: Don't keep stale pointer to bo->ggtt_node drm/xe: fix missing 'xe_vm_put' drm/xe: fix build warning with CONFIG_PM=n drm/xe: Suppress missing outer rpm protection warning drm/xe: prevent potential UAF in pf_provision_vf_ggtt() drm/amd/display: Add all planes on CRTC to state for overlay cursor drm/i915/bios: fix printk format width drm/i915/display: Fix BMG CCS modifiers drm/amdgpu: get rid of bogus includes of fdtable.h drm/amdkfd: CRIU fixes drm/amdgpu: fix a race in kfd_mem_export_dmabuf() drm: new helper: drm_gem_prime_handle_to_dmabuf() drm/amdgpu/atomfirmware: Silence UBSAN warning drm/amdgpu: Fix kdoc entry in 'amdgpu_vm_cpu_prepare' drm/amd/amdgpu: apply command submission parser for JPEG v1 drm/amd/amdgpu: apply command submission parser for JPEG v2+ drm/amd/pm: fix the pp_dpm_pcie issue on smu v14.0.2/3 drm/amd/pm: update the features set on smu v14.0.2/3 ... |
||
|
Linus Torvalds
|
3a7101e9b2 |
powerpc updates for 6.12
- Reduce alignment constraints on STRICT_KERNEL_RWX and speed-up TLB misses on
8xx and 603.
- Replace kretprobe code with rethook and enable fprobe.
- Remove the "fast endian switch" syscall.
- Handle DLPAR device tree updates in kernel, allowing the deprecation of the
binary /proc/powerpc/ofdt interface.
Thanks to: Abhishek Dubey, Alex Shi, Benjamin Gray, Christophe Leroy, Gaosheng
Cui, Gautam Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Huang
Xiaojia, Jinjie Ruan, Madhavan Srinivasan, Miguel Ojeda, Mina Almasry, Narayana
Murty N, Naveen Rao, Rob Herring (Arm), Scott Cheloha, Segher Boessenkool,
Stephen Rothwell, Thomas Zimmermann, Uwe Kleine-König, Vaibhav Jain, Zhang
Zekun.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRjvi15rv0TSTaE+SIF0oADX8seIQUCZurC9gAKCRAF0oADX8se
IWunAPkBK70cSZgldH9gJL7C0aqRX+j6qBbvzmoz0E0UlxiRKQD/eW4yDxJBsS9Q
KPS9e50duoeU+gKQYuSWkKpH/i4uXAU=
=Q107
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Reduce alignment constraints on STRICT_KERNEL_RWX and speed-up TLB
misses on 8xx and 603
- Replace kretprobe code with rethook and enable fprobe
- Remove the "fast endian switch" syscall
- Handle DLPAR device tree updates in kernel, allowing the deprecation
of the binary /proc/powerpc/ofdt interface
Thanks to Abhishek Dubey, Alex Shi, Benjamin Gray, Christophe Leroy,
Gaosheng Cui, Gautam Menghani, Geert Uytterhoeven, Haren Myneni, Hari
Bathini, Huang Xiaojia, Jinjie Ruan, Madhavan Srinivasan, Miguel Ojeda,
Mina Almasry, Narayana Murty N, Naveen Rao, Rob Herring (Arm), Scott
Cheloha, Segher Boessenkool, Stephen Rothwell, Thomas Zimmermann, Uwe
Kleine-König, Vaibhav Jain, and Zhang Zekun.
* tag 'powerpc-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (59 commits)
powerpc/atomic: Use YZ constraints for DS-form instructions
MAINTAINERS: powerpc: Add Maddy
powerpc: Switch back to struct platform_driver::remove()
powerpc/pseries/eeh: Fix pseries_eeh_err_inject
selftests/powerpc: Allow building without static libc
macintosh/via-pmu: register_pmu_pm_ops() can be __init
powerpc: Stop using no_llseek
powerpc/64s: Remove the "fast endian switch" syscall
powerpc/mm/64s: Restrict THP to Radix or HPT w/64K pages
powerpc/mm/64s: Move THP reqs into a separate symbol
powerpc/64s: Make mmu_hash_ops __ro_after_init
powerpc: Replace kretprobe code with rethook on powerpc
powerpc: pseries: Constify struct kobj_type
powerpc: powernv: Constify struct kobj_type
powerpc: Constify struct kobj_type
powerpc/pseries/dlpar: Add device tree nodes for DLPAR IO add
powerpc/pseries/dlpar: Remove device tree node for DLPAR IO remove
powerpc/pseries: Use correct data types from pseries_hp_errorlog struct
powerpc/vdso: Inconditionally use CFUNC macro
powerpc/32: Implement validation of emergency stack
...
|
||
|
Linus Torvalds
|
4a39ac5b7d |
Random number generator updates for Linux 6.12-rc1.
-----BEGIN PGP SIGNATURE-----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=mWCw
-----END PGP SIGNATURE-----
Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator updates from Jason Donenfeld:
"Originally I'd planned on sending each of the vDSO getrandom()
architecture ports to their respective arch trees. But as we started
to work on this, we found lots of interesting issues in the shared
code and infrastructure, the fixes for which the various archs needed
to base their work.
So in the end, this turned into a nice collaborative effort fixing up
issues and porting to 5 new architectures -- arm64, powerpc64,
powerpc32, s390x, and loongarch64 -- with everybody pitching in and
commenting on each other's code. It was a fun development cycle.
This contains:
- Numerous fixups to the vDSO selftest infrastructure, getting it
running successfully on more platforms, and fixing bugs in it.
- Additions to the vDSO getrandom & chacha selftests. Basically every
time manual review unearthed a bug in a revision of an arch patch,
or an ambiguity, the tests were augmented.
By the time the last arch was submitted for review, s390x, v1 of
the series was essentially fine right out of the gate.
- Fixes to the the generic C implementation of vDSO getrandom, to
build and run successfully on all archs, decoupling it from
assumptions we had (unintentionally) made on x86_64 that didn't
carry through to the other architectures.
- Port of vDSO getrandom to LoongArch64, from Xi Ruoyao and acked by
Huacai Chen.
- Port of vDSO getrandom to ARM64, from Adhemerval Zanella and acked
by Will Deacon.
- Port of vDSO getrandom to PowerPC, in both 32-bit and 64-bit
varieties, from Christophe Leroy and acked by Michael Ellerman.
- Port of vDSO getrandom to S390X from Heiko Carstens, the arch
maintainer.
While it'd be natural for there to be things to fix up over the course
of the development cycle, these patches got a decent amount of review
from a fairly diverse crew of folks on the mailing lists, and, for the
most part, they've been cooking in linux-next, which has been helpful
for ironing out build issues.
In terms of architectures, I think that mostly takes care of the
important 64-bit archs with hardware still being produced and running
production loads in settings where vDSO getrandom is likely to help.
Arguably there's still RISC-V left, and we'll see for 6.13 whether
they find it useful and submit a port"
* tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (47 commits)
selftests: vDSO: check cpu caps before running chacha test
s390/vdso: Wire up getrandom() vdso implementation
s390/vdso: Move vdso symbol handling to separate header file
s390/vdso: Allow alternatives in vdso code
s390/module: Provide find_section() helper
s390/facility: Let test_facility() generate static branch if possible
s390/alternatives: Remove ALT_FACILITY_EARLY
s390/facility: Disable compile time optimization for decompressor code
selftests: vDSO: fix vdso_config for s390
selftests: vDSO: fix ELF hash table entry size for s390x
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32
powerpc/vdso: Refactor CFLAGS for CVDSO build
powerpc/vdso32: Add crtsavres
mm: Define VM_DROPPABLE for powerpc/32
powerpc/vdso: Fix VDSO data access when running in a non-root time namespace
selftests: vDSO: don't include generated headers for chacha test
arm64: vDSO: Wire up getrandom() vDSO implementation
arm64: alternative: make alternative_has_cap_likely() VDSO compatible
selftests: vDSO: also test counter in vdso_test_chacha
...
|
||
|
Linus Torvalds
|
067610ebaa |
RCU pull request for v6.12
This pull request contains the following branches:
context_tracking.15.08.24a: Rename context tracking state related
symbols and remove references to "dynticks" in various context
tracking state variables and related helpers; force
context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section.
csd.lock.15.08.24a: Enhance CSD-lock diagnostic reports; add an API
to provide an indication of ongoing CSD-lock stall.
nocb.09.09.24a: Update and simplify RCU nocb code to handle
(de-)offloading of callbacks only for offline CPUs; fix RT
throttling hrtimer being armed from offline CPU.
rcutorture.14.08.24a: Remove redundant rcu_torture_ops get_gp_completed
fields; add SRCU ->same_gp_state and ->get_comp_state
functions; add generic test for NUM_ACTIVE_*RCU_POLL* for
testing RCU and SRCU polled grace periods; add CFcommon.arch
for arch-specific Kconfig options; print number of update types
in rcu_torture_write_types();
add rcutree.nohz_full_patience_delay testing to the TREE07
scenario; add a stall_cpu_repeat module parameter to test
repeated CPU stalls; add argument to limit number of CPUs a
guest OS can use in torture.sh;
rcustall.09.09.24a: Abbreviate RCU CPU stall warnings during CSD-lock
stalls; Allow dump_cpu_task() to be called without disabling
preemption; defer printing stall-warning backtrace when holding
rcu_node lock.
srcu.12.08.24a: Make SRCU gp seq wrap-around faster; add KCSAN checks
for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays; mark idle SRCU-barrier
callbacks to help identify stuck SRCU-barrier callback.
rcu.tasks.14.08.24a: Remove RCU Tasks Rude asynchronous APIs as they
are no longer used; stop testing RCU Tasks Rude asynchronous
APIs; fix access to non-existent percpu regions; check
processor-ID assumptions during chosen CPU calculation for
callback enqueuing; update description of rtp->tasks_gp_seq
grace-period sequence number; add rcu_barrier_cb_is_done()
to identify whether a given rcu_barrier callback is stuck;
mark idle Tasks-RCU-barrier callbacks; add
*torture_stats_print() functions to print detailed
diagnostics for Tasks-RCU variants; capture start time of
rcu_barrier_tasks*() operation to help distinguish a hung
barrier operation from a long series of barrier operations.
rcu_scaling_tests.15.08.24a:
refscale: Add a TINY scenario to support tests of Tiny RCU
and Tiny SRCU; Optimize process_durations() operation;
rcuscale: Dump stacks of stalled rcu_scale_writer() instances;
dump grace-period statistics when rcu_scale_writer() stalls;
mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks; print detailed grace-period and barrier diagnostics
on rcu_scale_writer() hangs for Tasks-RCU variants; warn if
async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude;
make all writer tasks report upon hang; tolerate repeated
GFP_KERNEL failure in rcu_scale_writer(); use special allocator
for rcu_scale_writer(); NULL out top-level pointers to heap
memory to avoid double-free bugs on modprobe failures; maintain
per-task instead of per-CPU callbacks count to avoid any issues
with migration of either tasks or callbacks; constify struct
ref_scale_ops.
fixes.12.08.24a: Use system_unbound_wq for kfree_rcu work to avoid
disturbing isolated CPUs.
misc.11.08.24a: Warn on unexpected rcu_state.srs_done_tail state;
Better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines; annotate struct
kvfree_rcu_bulk_data with __counted_by().
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSi2tPIQIc2VEtjarIAHS7/6Z0wpQUCZt8+8wAKCRAAHS7/6Z0w
pTqoAPwPN//tlEoJx2PRs6t0q+nD1YNvnZawPaRmdzgdM8zJogD+PiSN+XhqRr80
jzyvMDU4Aa0wjUNP3XsCoaCxo7L/lQk=
=bZ9z
-----END PGP SIGNATURE-----
Merge tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Context tracking:
- rename context tracking state related symbols and remove references
to "dynticks" in various context tracking state variables and
related helpers
- force context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section
CSD lock:
- enhance CSD-lock diagnostic reports
- add an API to provide an indication of ongoing CSD-lock stall
nocb:
- update and simplify RCU nocb code to handle (de-)offloading of
callbacks only for offline CPUs
- fix RT throttling hrtimer being armed from offline CPU
rcutorture:
- remove redundant rcu_torture_ops get_gp_completed fields
- add SRCU ->same_gp_state and ->get_comp_state functions
- add generic test for NUM_ACTIVE_*RCU_POLL* for testing RCU and SRCU
polled grace periods
- add CFcommon.arch for arch-specific Kconfig options
- print number of update types in rcu_torture_write_types()
- add rcutree.nohz_full_patience_delay testing to the TREE07 scenario
- add a stall_cpu_repeat module parameter to test repeated CPU stalls
- add argument to limit number of CPUs a guest OS can use in
torture.sh
rcustall:
- abbreviate RCU CPU stall warnings during CSD-lock stalls
- Allow dump_cpu_task() to be called without disabling preemption
- defer printing stall-warning backtrace when holding rcu_node lock
srcu:
- make SRCU gp seq wrap-around faster
- add KCSAN checks for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays
- mark idle SRCU-barrier callbacks to help identify stuck
SRCU-barrier callback
rcu tasks:
- remove RCU Tasks Rude asynchronous APIs as they are no longer used
- stop testing RCU Tasks Rude asynchronous APIs
- fix access to non-existent percpu regions
- check processor-ID assumptions during chosen CPU calculation for
callback enqueuing
- update description of rtp->tasks_gp_seq grace-period sequence
number
- add rcu_barrier_cb_is_done() to identify whether a given
rcu_barrier callback is stuck
- mark idle Tasks-RCU-barrier callbacks
- add *torture_stats_print() functions to print detailed diagnostics
for Tasks-RCU variants
- capture start time of rcu_barrier_tasks*() operation to help
distinguish a hung barrier operation from a long series of barrier
operations
refscale:
- add a TINY scenario to support tests of Tiny RCU and Tiny
SRCU
- optimize process_durations() operation
rcuscale:
- dump stacks of stalled rcu_scale_writer() instances and
grace-period statistics when rcu_scale_writer() stalls
- mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks
- print detailed grace-period and barrier diagnostics on
rcu_scale_writer() hangs for Tasks-RCU variants
- warn if async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude
- make all writer tasks report upon hang
- tolerate repeated GFP_KERNEL failure in rcu_scale_writer()
- use special allocator for rcu_scale_writer()
- NULL out top-level pointers to heap memory to avoid double-free
bugs on modprobe failures
- maintain per-task instead of per-CPU callbacks count to avoid any
issues with migration of either tasks or callbacks
- constify struct ref_scale_ops
Fixes:
- use system_unbound_wq for kfree_rcu work to avoid disturbing
isolated CPUs
Misc:
- warn on unexpected rcu_state.srs_done_tail state
- better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines
- annotate struct kvfree_rcu_bulk_data with __counted_by()"
* tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (90 commits)
rcu: Defer printing stall-warning backtrace when holding rcu_node lock
rcu/nocb: Remove superfluous memory barrier after bypass enqueue
rcu/nocb: Conditionally wake up rcuo if not already waiting on GP
rcu/nocb: Fix RT throttling hrtimer armed from offline CPU
rcu/nocb: Simplify (de-)offloading state machine
context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
rcu: Update stray documentation references to rcu_dynticks_eqs_{enter, exit}()
rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()
rcu: Rename struct rcu_data .exp_dynticks_snap into .exp_watching_snap
rcu: Rename struct rcu_data .dynticks_snap into .watching_snap
rcu: Rename rcu_dynticks_zero_in_eqs() into rcu_watching_zero_in_eqs()
rcu: Rename rcu_dynticks_in_eqs_since() into rcu_watching_snap_stopped_since()
rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs()
rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_online()
context_tracking, rcu: Rename rcu_dynticks_curr_cpu_in_eqs() into rcu_is_watching_curr_cpu()
context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()
refscale: Constify struct ref_scale_ops
...
|
||
|
Linus Torvalds
|
97e17c08a4 |
A set of updates for CPU hotplug:
- Prepare the core for supporting parallel hotplug on loongarch - A small set of cleanups and enhancements -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmbn6qETHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZutD/94s3G8D3xrgQ6DwMHVtMtIAbzLtlBt SeKpIiSCnSy8bnQ+sAqOw4VjmbpB0dOlcJRii701D6hY+48TEgsL3dLn1/ws4ECc /5PapLihQgIquiAqk9iQH2BOrsFVqOGp4jbU95+ppBQtiDIB+3KeQPxxws57xb7E EUXzgCMTSsqlHCt40UCbsn7atbj0AfkV12uPKsNZT7WxPjxGK3OLuttMA6a+4xHm nBxxy/Vp9ll3J+uRGQobLFgZiIEiUsHI/+pGwltYxXC7jdN3joGqD3LuwypqLuly Ir8yXP+NhpOeNMn3iSVE8sm39bp8Sm1UslrbXvlQHGuP1JsUnIZzyevdneUp5Je7 zDKHzfn04Ls3uK1XiuQGUTvLYuiHPQ/UHP8ZeWFlkapFFDtl3fu2FU9r+LlkwKZK /0zQF6R5eBaGl3F1YKn7nPcfNf1jTLQlYq+eZT2DnSSeOb7ammjxVGgIMzWRWidG ZFNZhkjusRi3MH4aYLF8mQl7nyepy4+XQF4K0PusQ8B/NQxYRoI66mFsKhtufn5e 7T9vpYTazmhazl9SO1wQ9NNXYub+bjVj3fyRl5WSsTdS5d9pz9yqgC+xBIAJXTaq 9kN+NlP/nJ6HAzTgO074znUYR/tjlki22hNHVa6JyEh0/h0AVG53CFH5/hSONJ3P jvnhjxM/X/kLwg== =0FVL -----END PGP SIGNATURE----- Merge tag 'smp-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug updates from Thomas Gleixner: - Prepare the core for supporting parallel hotplug on loongarch - A small set of cleanups and enhancements * tag 'smp-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smp: Mark smp_prepare_boot_cpu() __init cpu: Fix W=1 build kernel-doc warning cpu/hotplug: Provide weak fallback for arch_cpuhp_init_parallel_bringup() cpu/hotplug: Make HOTPLUG_PARALLEL independent of HOTPLUG_SMT |
||
|
Christophe Leroy
|
8072b39c3a |
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
Extend getrandom() vDSO implementation to VDSO64. Tested on QEMU on both ppc64_defconfig and ppc64le_defconfig. Results from a Power9 (PowerNV): ~ # ./vdso_test_getrandom bench-single vdso: 25000000 times in 0.787943615 seconds libc: 25000000 times in 14.101887252 seconds syscall: 25000000 times in 14.047475082 seconds Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Tested-by: Madhavan Srinivasan <maddy@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Christophe Leroy
|
53cee505ae |
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32
To be consistent with other VDSO functions, the function is called __kernel_getrandom() __arch_chacha20_blocks_nostack() fonction is implemented basically with 32 bits operations. It performs 4 QUARTERROUND operations in parallele. There are enough registers to avoid using the stack: On input: r3: output bytes r4: 32-byte key input r5: 8-byte counter input/output r6: number of 64-byte blocks to write to output During operation: stack: pointer to counter (r5) and non-volatile registers (r14-131) r0: counter of blocks (initialised with r6) r4: Value '4' after key has been read, used for indexing r5-r12: key r14-r15: block counter r16-r31: chacha state At the end: r0, r6-r12: Zeroised r5, r14-r31: Restored Performance on powerpc 885 (using kernel selftest): ~# ./vdso_test_getrandom bench-single vdso: 25000000 times in 62.938002291 seconds libc: 25000000 times in 535.581916866 seconds syscall: 25000000 times in 531.525042806 seconds Performance on powerpc 8321 (using kernel selftest): ~# ./vdso_test_getrandom bench-single vdso: 25000000 times in 16.899318858 seconds libc: 25000000 times in 131.050596522 seconds syscall: 25000000 times in 129.794790389 seconds This first patch adds support for VDSO32. As selftests cannot easily be generated only for VDSO32, and because the following patch brings support for VDSO64 anyway, this patch opts out all code in __arch_chacha20_blocks_nostack() so that vdso_test_chacha will not fail to compile and will not crash on PPC64/PPC64LE, allthough the selftest itself will fail. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Christophe Leroy
|
a6b67eb099 |
powerpc/vdso: Refactor CFLAGS for CVDSO build
In order to avoid two much duplication when we add new VDSO functionnalities in C like getrandom, refactor common CFLAGS. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Christophe Leroy
|
b163596a5b |
powerpc/vdso32: Add crtsavres
Commit
|
||
|
Christophe Leroy
|
c73049389e |
powerpc/vdso: Fix VDSO data access when running in a non-root time namespace
When running in a non-root time namespace, the global VDSO data page is replaced by a dedicated namespace data page and the global data page is mapped next to it. Detailed explanations can be found at commit |
||
|
Simona Vetter
|
b615b9c36c |
Linux 6.11-rc7
-----BEGIN PGP SIGNATURE-----
iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmbeHCQeHHRvcnZhbGRz
QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGwfwH/ijnVvDWt0L1mpkE
oIPmKV+2018CA5ww/Hh+ncToWn/aCmrczHc1SEUOk/SbZnGyXJj/6KiNEK6XpJyu
Hb90y53D5B9jkEq8WPbSy5RtqCU598gYPeBxkczjj431jer9EsZVzqsKxGRzdAud
2+Ft/qLiVL8AP5P8IPuU7G8CU6OE0fUL5PyuzMGDtstL3R6lPpG+kf/VrJGV1mp7
DVZO8hKwIi5Vu+ciaTJv+9PMHzXRnMhLIGabtGIzM8nhmrQx/Kv/PMjiEl/OBkmk
6PzafEkxVtBKDNK2Qhp+QMTQJATuPccZI8Kn6peZhqoNWYHBqx7d88Q/2iiAGj0z
skPW5Gs=
=orf8
-----END PGP SIGNATURE-----
Merge v6.11-rc7 into drm-next
Thomas needs
|
||
|
Narayana Murty N
|
b0e2b828df |
powerpc/pseries/eeh: Fix pseries_eeh_err_inject
VFIO_EEH_PE_INJECT_ERR ioctl is currently failing on pseries due to missing implementation of err_inject eeh_ops for pseries. This patch implements pseries_eeh_err_inject in eeh_ops/pseries eeh_ops. Implements support for injecting MMIO load/store error for testing from user space. The check on PCI error type (bus type) code is moved to platform code, since the eeh_pe_inject_err can be allowed to more error types depending on platform requirement. Removal of the check for 'type' in eeh_pe_inject_err() doesn't impact PowerNV as pnv_eeh_err_inject() already has an equivalent check in place. Signed-off-by: Narayana Murty N <nnmlinux@linux.ibm.com> Reviewed-by: Vaibhav Jain <vaibhav@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240909140220.529333-1-nnmlinux@linux.ibm.com |
||
|
Bibo Mao
|
1d07085402 |
smp: Mark smp_prepare_boot_cpu() __init
smp_prepare_boot_cpu() is only called during boot, hence mark it as __init. Signed-off-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://lore.kernel.org/all/20240907082720.452148-1-maobibo@loongson.cn |
||
|
Michael Ellerman
|
5b4bc44a48 |
powerpc: Stop using no_llseek
Since commit
|
||
|
Michael Ellerman
|
29dbb98449 |
powerpc/64s: Remove the "fast endian switch" syscall
The non-standard "fast endian switch" syscall was added in 2008[1], but was never widely used. It was disabled by default in 2017[2], and there's no evidence it's ever been used since. Remove it entirely. A normal endian switch syscall was added in 2015[3]. [1]: |
||
|
Abhishek Dubey
|
19f1bc3fb5 |
powerpc: Replace kretprobe code with rethook on powerpc
This is an adaptation of commit |
||
|
Huang Xiaojia
|
7509c23770 |
powerpc: Constify struct kobj_type
'struct kobj_type' is not modified. It is only used in kobject_init_and_add()/kobject_init() which takes a 'const struct kobj_type *ktype' parameter. Constifying this structure moves some data to a read-only section, so increase over all security. On a x86_64, compiled with ppc64 defconfig: Before: ====== text data bss dec hex filename 7145 606 0 7751 1e47 arch/powerpc/kernel/cacheinfo.o 3663 384 16 4063 fdf arch/powerpc/kernel/secvar-sysfs.o After: ====== text data bss dec hex filename 7193 558 0 7751 1e47 arch/powerpc/kernel/cacheinfo.o 3663 384 16 4063 fdf arch/powerpc/kernel/secvar-sysfs.o Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240826150957.3500237-1-huangxiaojia2@huawei.com |
||
|
Michael Ellerman
|
edb4a8bffd |
powerpc/vdso: refactor error handling
Linus noticed that the error handling in __arch_setup_additional_pages()
fails to clear the mm VDSO pointer if _install_special_mapping() fails.
In practice there should be no actual bug, because if there's an error the
VDSO pointer is cleared later in arch_setup_additional_pages().
However it's no longer necessary to set the pointer before installing the
mapping. Commit
|
||
|
Michael Ellerman
|
5463bafab4 |
powerpc/mm: handle VDSO unmapping via close() rather than arch_unmap()
Add a close() callback to the VDSO special mapping to handle unmapping of the VDSO. That will make it possible to remove the arch_unmap() hook entirely in a subsequent patch. Link: https://lkml.kernel.org/r/20240812082605.743814-2-mpe@ellerman.id.au Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jeff Xu <jeffxu@google.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Pedro Falcato <pedro.falcato@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christophe Leroy
|
65948b0e71 |
powerpc/vdso: Inconditionally use CFUNC macro
During merge of commit |
||
|
Christophe Leroy
|
dca5b1d69a |
powerpc/32: Implement validation of emergency stack
VMAP stack added an emergency stack on powerpc/32 for when there is a stack overflow, but failed to add stack validation for that emergency stack. That validation is required for show stack. Implement it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/2439d50b019f758db4a6d7b238b06441ab109799.1724156805.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
062e825a33 |
powerpc/603: Inconditionally use task PGDIR in DTLB misses
At the time being, DATA TLB miss handlers use task PGDIR for user addresses and swapper_pg_dir for kernel addresses. Now that kernel part of swapper_pg_dir is copied into task PGDIR at PGD allocation, it is possible to avoid the above logic and always use task PGDIR. But new kernel PGD entries can still be created after init, in which case those PGD entries may miss in task PGDIR. This can be handled in DATA TLB error handler. However, it needs to be done in real mode because the missing entry might be related to the stack. So implement copy of missing PGD entry in DATA TLB miss handler just after detection of invalid PGD entry. Also replace comparison by same calculation as in previous patch to know if an address belongs to a kernel or user segment. Note that as mentioned in platforms/Kconfig.cputype, SMP is not supported on 603 processors so there is no risk of the PGD entry be populated during the fault. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/a2ba8eeb1c845eeb9e46b6fe3a5e9f841df9a033.1724173828.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
3f57d90c23 |
powerpc/603: Inconditionally use task PGDIR in ITLB misses
Now that modules exec page tables are preallocated, the instruction TLBmiss handler can use task PGDIR inconditionally. Also revise the identification of user vs kernel user space by doing a calculation instead of a comparison: Get the segment number and subtract the number of the first kernel segment. The result is positive for kernel addresses and negative for user addresses, which means that upper 2 bits are 0 for kernel and 3 for user. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/9a3242162ad2faab8019c698e501b326a126ee9e.1724173828.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
31c0e137ec |
powerpc/603: Switch r0 and r3 in TLB miss handlers
In preparation of next patch that will perform some additional calculations to replace comparison, switch the use of r0 and r3 as r0 has some limitations in some instructions like 'addi/subi'. Also remove outdated comments about the meaning of each register. The registers are used for many things and it would be difficult to accurately describe all things done with a given register. The function is now small enough to get a global view without much description. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/566af5e87685b1a85d3182549c0d520ce2d8877a.1724173828.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
ac9f97ff8b |
powerpc/8xx: Inconditionally use task PGDIR in DTLB misses
At the time being, DATA TLB miss handlers use task PGDIR for user addresses and swapper_pg_dir for kernel addresses. Now that kernel part of swapper_pg_dir is copied into task PGDIR at PGD allocation, it is possible to avoid the above logic and always use task PGDIR. But new kernel PGD entries can still be created after init, in which case those PGD entries may miss in task PGDIR. This can be handled in DATA TLB error handler. However, it needs to be done in real mode because the missing entry might be related to the stack. So implement copy of missing PGD entry in the prolog of DATA TLB ERROR handler just after the fixup of DAR. Note that this is feasible because 8xx doesn't implement vmap or ioremap with 8Mbytes pages but only 512kbytes pages which are at PTE level. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/7a76a923d2a111f1d843d8b20b4df0c65d2f4a7b.1724173828.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
33c527522f |
powerpc/8xx: Inconditionally use task PGDIR in ITLB misses
Now that modules exec page tables are preallocated, the instruction TLBmiss handler can use task PGDIR inconditionally. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/774fd766a8b9bcb9173b5e677d5dad0df2d3970f.1724173828.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
1a736d98c8 |
Revert "powerpc/8xx: Always pin kernel text TLB"
This reverts commit |
||
|
Christophe Leroy
|
65a82e117f |
powerpc/8xx: Fix kernel vs user address comparison
Since commit |
||
|
Gaosheng Cui
|
dace02a9ee |
powerpc: Remove obsoleted declaration for _get_SP
The implementation of _get_SP() was removed in commit
|
||
|
Daniel Vetter
|
4461e9e5c3 |
Linux 6.11-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmbK2B8eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGFwkH/10QpUgzIfbFKbF+ 5hwcvaqS5myxWwJ4PjN0eR1qGE6RzVO0Tb24+TVql+7pxu+iWm1kYgC3+/T5xJsP ECAszdmPWSco1xaHrh2y3PyCJjaBiqFbIxdjPp7odjDpG9qarbcty8YpWs44u/gd RDXzHUuScEShBhEt0ZhvE1pIDL8jJ8JL3yqOMZ+XaDxtJbjaHw4GHp8efxlBWc8N jZKIVJi22q5NWG5T0tGtPWwzCm0ewA/JNMTEvE9leoSoAgO85NZ0ivxMC76q/tbj BrYk5KnzfhJs4b/n/KtIwWaLTgLyXKGqHMaMq8sbXtp410aUdgnRJO2cl3fI+1vc vxQfAfk= =RemI -----END PGP SIGNATURE----- Merge v6.11-rc5 into drm-next amdgpu pr conconflicts due to patches cherry-picked to -fixes, I might as well catch up with a backmerge and handle them all. Plus both misc and intel maintainers asked for a backmerge anyway. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
||
|
Christophe Leroy
|
6114139c3b |
powerpc/vdso: Don't discard rela sections
After building the VDSO, there is a verification that it contains no dynamic relocation, see commit |
||
|
Benjamin Gray
|
5799cd765f |
powerpc/32: Convert patch_instruction() to patch_uint()
These changes are for patch_instruction() uses on data. Unlike ppc64 these should not be incorrect as-is, but using the patch_uint() alias better reflects what kind of data being patched and allows for benchmarking the effect of different patch_* implementations (e.g., skipping instruction flushing when patching data). Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Tested-by: Hari Bathini <hbathini@linux.ibm.com> Acked-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240515024445.236364-5-bgray@linux.ibm.com |
||
|
Benjamin Gray
|
90d4fed5b2 |
powerpc/64: Convert patch_instruction() to patch_u32()
This use of patch_instruction() is working on 32 bit data, and can fail
if the data looks like a prefixed instruction and the extra write
crosses a page boundary. Use patch_u32() to fix the write size.
Fixes:
|
||
|
Christophe Leroy
|
e7e846dc6c |
powerpc/mm: Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL
Booting with CONFIG_DEBUG_VIRTUAL leads to following warning when
passing hugepage reservation on command line:
Kernel command line: hugepagesz=1g hugepages=1 hugepagesz=64m hugepages=1 hugepagesz=256m hugepages=1 noreboot
HugeTLB: allocating 1 of page size 1.00 GiB failed. Only allocated 0 hugepages.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at arch/powerpc/include/asm/io.h:948 __alloc_bootmem_huge_page+0xd4/0x284
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 6.10.0-rc6-00396-g6b0e82791bd0-dirty #936
Hardware name: MPC8544DS e500v2 0x80210030 MPC8544 DS
NIP: c1020240 LR: c10201d0 CTR: 00000000
REGS: c13fdd30 TRAP: 0700 Not tainted (6.10.0-rc6-00396-g6b0e82791bd0-dirty)
MSR: 00021000 <CE,ME> CR: 44084288 XER: 20000000
GPR00: c10201d0 c13fde20 c130b560 e8000000 e8001000 00000000 00000000 c1420000
GPR08: 00000000 00028001 00000000 00000004 44084282 01066ac0 c0eb7c9c efffe149
GPR16: c0fc4228 0000005f ffffffff c0eb7d0c c0eb7cc0 c0eb7ce0 ffffffff 00000000
GPR24: c1441cec efffe153 e8001000 c14240c0 00000000 c1441d64 00000000 e8000000
NIP [c1020240] __alloc_bootmem_huge_page+0xd4/0x284
LR [c10201d0] __alloc_bootmem_huge_page+0x64/0x284
Call Trace:
[c13fde20] [c10201d0] __alloc_bootmem_huge_page+0x64/0x284 (unreliable)
[c13fde50] [c10207b8] hugetlb_hstate_alloc_pages+0x8c/0x3e8
[c13fdeb0] [c1021384] hugepages_setup+0x240/0x2cc
[c13fdef0] [c1000574] unknown_bootoption+0xfc/0x280
[c13fdf30] [c0078904] parse_args+0x200/0x4c4
[c13fdfa0] [c1000d9c] start_kernel+0x238/0x7d0
[c13fdff0] [c0000434] set_ivor+0x12c/0x168
Code: 554aa33e 7c042840 3ce0c142 80a7427c 5109a016 50caa016 7c9a2378 7fdcf378 4180000c 7c052040 41810160 7c095040 <0fe00000> 38c00000 40800108 3c60c0eb
---[ end trace 0000000000000000 ]---
This is due to virt_addr_valid() using high_memory before it is set.
high_memory is set in mem_init() using max_low_pfn, but max_low_pfn
is available long before, it is set in mem_topology_setup(). So just
like commit
|
||
|
Daniel Vetter
|
91dae758bd |
drm-misc-next for v6.12:
UAPI Changes: virtio: - Define DRM capset Cross-subsystem Changes: dma-buf: - heaps: Clean up documentation printk: - Pass description to kmsg_dump() Core Changes: CI: - Update IGT tests - Point upstream repo to GitLab instance modesetting: - Introduce Power Saving Policy property for connectors - Add might_fault() to drm_modeset_lock priming - Add dynamic per-crtc vblank configuration support panic: - Avoid build-time interference with framebuffer console docs: - Document Colorspace property scheduler: - Remove full_recover from drm_sched_start TTM: - Make LRU walk restartable after dropping locks - Allow direct reclaim to allocate local memory Driver Changes: amdgpu: - Support Power Saving Policy connector property ast: - astdp: Support AST2600 with VGA; Clean up HPD bridge: - Silence error message on -EPROBE_DEFER - analogix: Clean aup - bridge-connector: Fix double free - lt6505: Disable interrupt when powered off - tc358767: Make default DP port preemphasis configurable gma500: - Update i2c terminology ivpu: - Add MODULE_FIRMWARE() lcdif: - Fix pixel clock loongson: - Use GEM refcount over TTM's mgag200: - Improve BMC handling - Support VBLANK intterupts nouveau: - Refactor and clean up internals - Use GEM refcount over TTM's panel: - Shutdown fixes plus documentation - Refactor several drivers for better code sharing - boe-th101mb31ig002: Support for starry-er88577 MIPI-DSI panel plus DT; Fix porch parameter - edp: Support AOU B116XTN02.3, AUO B116XAN06.1, AOU B116XAT04.1, BOE NV140WUM-N41, BOE NV133WUM-N63, BOE NV116WHM-A4D, CMN N116BCA-EA2, CMN N116BCP-EA2, CSW MNB601LS1-4 - himax-hx8394: Support Microchip AC40T08A MIPI Display panel plus DT - ilitek-ili9806e: Support Densitron DMT028VGHMCMI-1D TFT plus DT - jd9365da: Support Melfas lmfbx101117480 MIPI-DSI panel plus DT; Refactor for code sharing sti: - Fix module owner stm: - Avoid UAF wih managed plane and CRTC helpers - Fix module owner - Fix error handling in probe - Depend on COMMON_CLK - ltdc: Fix transparency after disabling plane; Remove unused interrupt tegra: - Call drm_atomic_helper_shutdown() v3d: - Clean up perfmon vkms: - Clean up -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEchf7rIzpz2NEoWjlaA3BHVMLeiMFAmareygACgkQaA3BHVML eiO2vwf9FirbMiq4lfHzgcbNIU1dTUtjRAZjrlwGmqk5cb9lUshAMCMBMOEQBDdg XMQQj/RMBvRUuxzsPGk78ObSz5FBaBLgKwFprer0V6uslQaJxj4YRsnkp0l2n+0k +ebhfo2rUgZOdgNOkXH326w9UhqiydIa7GaA2aq1vUzXKFDfvGXtSN75BMlEWlKP rTft56AiwjwcKu7zYFHGlFUMSNpKAQy7lnV3+dBXAfFNHu4zVNoI/yWGEOdR7eVo WhiEcpvismsOh+BfUvMNPP3RKwjXHdwMlJYb+v9XGgH27hqc50lSceWydHtoJTto DTXF9WQhJ+/GQR9ZGmBjos9GVbECDA== =L/1W -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2024-08-01' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next drm-misc-next for v6.12: UAPI Changes: virtio: - Define DRM capset Cross-subsystem Changes: dma-buf: - heaps: Clean up documentation printk: - Pass description to kmsg_dump() Core Changes: CI: - Update IGT tests - Point upstream repo to GitLab instance modesetting: - Introduce Power Saving Policy property for connectors - Add might_fault() to drm_modeset_lock priming - Add dynamic per-crtc vblank configuration support panic: - Avoid build-time interference with framebuffer console docs: - Document Colorspace property scheduler: - Remove full_recover from drm_sched_start TTM: - Make LRU walk restartable after dropping locks - Allow direct reclaim to allocate local memory Driver Changes: amdgpu: - Support Power Saving Policy connector property ast: - astdp: Support AST2600 with VGA; Clean up HPD bridge: - Silence error message on -EPROBE_DEFER - analogix: Clean aup - bridge-connector: Fix double free - lt6505: Disable interrupt when powered off - tc358767: Make default DP port preemphasis configurable gma500: - Update i2c terminology ivpu: - Add MODULE_FIRMWARE() lcdif: - Fix pixel clock loongson: - Use GEM refcount over TTM's mgag200: - Improve BMC handling - Support VBLANK intterupts nouveau: - Refactor and clean up internals - Use GEM refcount over TTM's panel: - Shutdown fixes plus documentation - Refactor several drivers for better code sharing - boe-th101mb31ig002: Support for starry-er88577 MIPI-DSI panel plus DT; Fix porch parameter - edp: Support AOU B116XTN02.3, AUO B116XAN06.1, AOU B116XAT04.1, BOE NV140WUM-N41, BOE NV133WUM-N63, BOE NV116WHM-A4D, CMN N116BCA-EA2, CMN N116BCP-EA2, CSW MNB601LS1-4 - himax-hx8394: Support Microchip AC40T08A MIPI Display panel plus DT - ilitek-ili9806e: Support Densitron DMT028VGHMCMI-1D TFT plus DT - jd9365da: Support Melfas lmfbx101117480 MIPI-DSI panel plus DT; Refactor for code sharing sti: - Fix module owner stm: - Avoid UAF wih managed plane and CRTC helpers - Fix module owner - Fix error handling in probe - Depend on COMMON_CLK - ltdc: Fix transparency after disabling plane; Remove unused interrupt tegra: - Call drm_atomic_helper_shutdown() v3d: - Clean up perfmon vkms: - Clean up Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20240801121406.GA102996@linux.fritz.box |
||
|
Thomas Zimmermann
|
28455894bb |
powerpc/traps: Use backlight power constants
Replace FB_BLANK_ constants with their counterparts from the backlight subsystem. The values are identical, so there's no change in functionality or semantics. traps.c already includes backlight.h where the BACKLIGHT constants are defined. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240731130720.1148872-2-tzimmermann@suse.de |
||
|
Thomas Zimmermann
|
0e8655b4e8 |
Merge drm/drm-next into drm-misc-next
Backmerging to get a late RC of v6.10 before moving into v6.11. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> |
||
|
Valentin Schneider
|
d65d411c92 |
treewide: context_tracking: Rename CONTEXT_* into CT_STATE_*
Context tracking state related symbols currently use a mix of the CONTEXT_ (e.g. CONTEXT_KERNEL) and CT_SATE_ (e.g. CT_STATE_MASK) prefixes. Clean up the naming and make the ctx_state enum use the CT_STATE_ prefix. Suggested-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Valentin Schneider <vschneid@redhat.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
||
|
Linus Torvalds
|
527eff227d |
- In the series "treewide: Refactor heap related implementation",
Kuan-Wei Chiu has significantly reworked the min_heap library code and has taught bcachefs to use the new more generic implementation. - Yury Norov's series "Cleanup cpumask.h inclusion in core headers" reworks the cpumask and nodemask headers to make things generally more rational. - Kuan-Wei Chiu has sent along some maintenance work against our sorting library code in the series "lib/sort: Optimizations and cleanups". - More library maintainance work from Christophe Jaillet in the series "Remove usage of the deprecated ida_simple_xx() API". - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the series "nilfs2: eliminate the call to inode_attach_wb()". - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB command error". - Plus the usual shower of singleton patches all over the place. Please see the relevant changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2GvwAKCRDdBJ7gKXxA jlf/AP48xP5ilIHbtpAKm2z+MvGuTxJQ5VSC0UXFacuCbc93lAEA+Yo+vOVRmh6j fQF2nVKyKLYfSz7yqmCyAaHWohIYLgg= =Stxz -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - In the series "treewide: Refactor heap related implementation", Kuan-Wei Chiu has significantly reworked the min_heap library code and has taught bcachefs to use the new more generic implementation. - Yury Norov's series "Cleanup cpumask.h inclusion in core headers" reworks the cpumask and nodemask headers to make things generally more rational. - Kuan-Wei Chiu has sent along some maintenance work against our sorting library code in the series "lib/sort: Optimizations and cleanups". - More library maintainance work from Christophe Jaillet in the series "Remove usage of the deprecated ida_simple_xx() API". - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the series "nilfs2: eliminate the call to inode_attach_wb()". - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB command error". - Plus the usual shower of singleton patches all over the place. Please see the relevant changelogs for details. * tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (98 commits) ia64: scrub ia64 from poison.h watchdog/perf: properly initialize the turbo mode timestamp and rearm counter tsacct: replace strncpy() with strscpy() lib/bch.c: use swap() to improve code test_bpf: convert comma to semicolon init/modpost: conditionally check section mismatch to __meminit* init: remove unused __MEMINIT* macros nilfs2: Constify struct kobj_type nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro math: rational: add missing MODULE_DESCRIPTION() macro lib/zlib: add missing MODULE_DESCRIPTION() macro fs: ufs: add MODULE_DESCRIPTION() lib/rbtree.c: fix the example typo ocfs2: add bounds checking to ocfs2_check_dir_entry() fs: add kernel-doc comments to ocfs2_prepare_orphan_dir() coredump: simplify zap_process() selftests/fpu: add missing MODULE_DESCRIPTION() macro compiler.h: simplify data_race() macro build-id: require program headers to be right after ELF header resource: add missing MODULE_DESCRIPTION() ... |
||
|
Linus Torvalds
|
fbc90c042c |
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff). Yu has a fix which I'll send along later via the hotfixes branch. - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Is anyone reading this stuff? If so, email me! - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2C+QAKCRDdBJ7gKXxA joTkAQDvjqOoFStqk4GU3OXMYB7WCU/ZQMFG0iuu1EEwTVDZ4QEA8CnG7seek1R3 xEoo+vw0sWWeLV3qzsxnCA1BJ8cTJA8= =z0Lf -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. * tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits) mm/mglru: fix ineffective protection calculation mm/zswap: fix a white space issue mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio mm/hugetlb: fix possible recursive locking detected warning mm/gup: clear the LRU flag of a page before adding to LRU batch mm/numa_balancing: teach mpol_to_str about the balancing mode mm: memcg1: convert charge move flags to unsigned long long alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting lib: reuse page_ext_data() to obtain codetag_ref lib: add missing newline character in the warning message mm/mglru: fix overshooting shrinker memory mm/mglru: fix div-by-zero in vmpressure_calc_level() mm/kmemleak: replace strncpy() with strscpy() mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB mm: ignore data-race in __swap_writepage hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr mm: shmem: rename mTHP shmem counters mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async() mm/migrate: putback split folios when numa hint migration fails ... |
||
|
Linus Torvalds
|
3c3ff7be97 |
powerpc updates for 6.11
- Remove support for 40x CPUs & platforms. - Add support to the 64-bit BPF JIT for cpu v4 instructions. - Fix PCI hotplug driver crash on powernv. - Fix doorbell emulation for KVM on PAPR guests (nestedv2). - Fix KVM nested guest handling of some less used SPRs. - Online NUMA nodes with no CPU/memory if they have a PCI device attached. - Reduce memory overhead of enabling kfence on 64-bit Radix MMU kernels. - Reimplement the iommu table_group_ops for pseries for VFIO SPAPR TCE. Thanks to: Anjali K, Artem Savkov, Athira Rajeev, Breno Leitao, Brian King, Celeste Liu, Christophe Leroy, Esben Haabendal, Gaurav Batra, Gautam Menghani, Haren Myneni, Hari Bathini, Jeff Johnson, Krishna Kumar, Krzysztof Kozlowski, Nathan Lynch, Nicholas Piggin, Nick Bowler, Nilay Shroff, Rob Herring (Arm), Shawn Anastasio, Shivaprasad G Bhat, Sourabh Jain, Srikar Dronamraju, Timothy Pearson, Uwe Kleine-König, Vaibhav Jain. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmaaUNITHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgDA+D/4o7OZ+SY0plTlMKSy3hW/SRXVj/byA CCKdizNY+3Rf/+K7KhuLOUPXhZOemLPE0xfKS3ND4mIEKCswzzXqmi6kjPH0qd8q qUhkHbt/LNpNJzZOYYw+usaklMTMdZtAl/jD9WEvGwgu2EYHgrujRIq04kEI1b0e OPiRnXOZcfevRBepQmYZKHvFlCRRa5vvsQcvLfY64yFqD0AsKTHgIi/48Dn33pb2 hqHYyV1tZA3uT86Z1TgF1OG83VOSDsgc19Sb2xn14O9aJJ7lD2TOgVa4P4FfBlXA TXYYGQwK31ymGVWGcGfebVdC1ECeTem9n28vlk5I0NO9xNgPok/Ov4DAiZ+u1G0E 3CXRDx9Uz2yPcGBJI2dpxfp2iw83Ad2DtBzAdukMD36xnC7xfrQz+W9SQfbcPJ8e I5SMAstWuLNgrX7YkjAOnXh1N41kht/mdV6KHdcMxPc7jOtAD65gUOZcgwYLeXlT Av17Ax0PMbiQ1BpFe2KNr/0T9Ba5k5rN7oDSKncDAq4uX8LcZKHj4bSHT9KroT1C q+GERspoCYp2VDMO742Jm7KTmQDHsS5y4Q+iSdOR8cQBXF613FaryDxSoJZhg2pf C2zIVED13RGcjIFcWlv73iA6QpBsphM+WWFz7mjULyJhxFQwm6BYt+Wy6jFu84oH sOgvPH8YyaK2uA== =eHVd -----END PGP SIGNATURE----- Merge tag 'powerpc-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Remove support for 40x CPUs & platforms - Add support to the 64-bit BPF JIT for cpu v4 instructions - Fix PCI hotplug driver crash on powernv - Fix doorbell emulation for KVM on PAPR guests (nestedv2) - Fix KVM nested guest handling of some less used SPRs - Online NUMA nodes with no CPU/memory if they have a PCI device attached - Reduce memory overhead of enabling kfence on 64-bit Radix MMU kernels - Reimplement the iommu table_group_ops for pseries for VFIO SPAPR TCE Thanks to: Anjali K, Artem Savkov, Athira Rajeev, Breno Leitao, Brian King, Celeste Liu, Christophe Leroy, Esben Haabendal, Gaurav Batra, Gautam Menghani, Haren Myneni, Hari Bathini, Jeff Johnson, Krishna Kumar, Krzysztof Kozlowski, Nathan Lynch, Nicholas Piggin, Nick Bowler, Nilay Shroff, Rob Herring (Arm), Shawn Anastasio, Shivaprasad G Bhat, Sourabh Jain, Srikar Dronamraju, Timothy Pearson, Uwe Kleine-König, and Vaibhav Jain. * tag 'powerpc-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (57 commits) Documentation/powerpc: Mention 40x is removed powerpc: Remove 40x leftovers macintosh/therm_windtunnel: fix module unload. powerpc: Check only single values are passed to CPU/MMU feature checks powerpc/xmon: Fix disassembly CPU feature checks powerpc: Drop clang workaround for builtin constant checks powerpc64/bpf: jit support for signed division and modulo powerpc64/bpf: jit support for sign extended mov powerpc64/bpf: jit support for sign extended load powerpc64/bpf: jit support for unconditional byte swap powerpc64/bpf: jit support for 32bit offset jmp instruction powerpc/pci: Hotplug driver bridge support pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv powerpc/configs: Update defconfig with now user-visible CONFIG_FSL_IFC powerpc: add missing MODULE_DESCRIPTION() macros macintosh/mac_hid: add MODULE_DESCRIPTION() KVM: PPC: add missing MODULE_DESCRIPTION() macros powerpc/kexec: Use of_property_read_reg() powerpc/64s/radix/kfence: map __kfence_pool at page granularity powerpc/pseries/iommu: Define spapr_tce_table_group_ops only with CONFIG_IOMMU_API ... |
||
|
Jocelyn Falempe
|
e1a261ba59 |
printk: Add a short description string to kmsg_dump()
kmsg_dump doesn't forward the panic reason string to the kmsg_dumper callback. This patch adds a new struct kmsg_dump_detail, that will hold the reason and description, and pass it to the dump() callback. To avoid updating all kmsg_dump() call, it adds a kmsg_dump_desc() function and a macro for backward compatibility. I've written this for drm_panic, but it can be useful for other kmsg_dumper. It allows to see the panic reason, like "sysrq triggered crash" or "VFS: Unable to mount root fs on xxxx" on the drm panic screen. v2: * Use a struct kmsg_dump_detail to hold the reason and description pointer, for more flexibility if we want to add other parameters. (Kees Cook) * Fix powerpc/nvram_64 build, as I didn't update the forward declaration of oops_to_nvram() Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com> Acked-by: Petr Mladek <pmladek@suse.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Kees Cook <kees@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240702122639.248110-1-jfalempe@redhat.com |
||
|
Masahiro Yamada
|
73db3abdca |
init/modpost: conditionally check section mismatch to __meminit*
This reverts commit
|
||
|
Christophe Leroy
|
7c44202e36 |
powerpc/e500: use contiguous PMD instead of hugepd
e500 supports many page sizes among which the following size are implemented in the kernel at the time being: 4M, 16M, 64M, 256M, 1G. On e500, TLB miss for hugepages is exclusively handled by SW even on e6500 which has HW assistance for 4k pages, so there are no constraints like on the 8xx. On e500/32, all are at PGD/PMD level and can be handled as cont-PMD. On e500/64, smaller ones are on PMD while bigger ones are on PUD. Again, they can easily be handled as cont-PMD and cont-PUD instead of hugepd. On e500/32, use the pagesize bits in PTE to know if it is a PMD or a leaf entry. This works because the pagesize bits are in the last 12 bits and page tables are 4k aligned. On e500/64, use highest bit which is always 1 on PxD (Because PxD contains virtual address of a kernel memory) and always 0 on PTEs because not all bits of RPN are used/possible. Link: https://lkml.kernel.org/r/dd085987816ed2a0c70adb7e34966cb833fc03e1.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christophe Leroy
|
dc0aa538a9 |
powerpc/e500: free r10 for FIND_PTE
Move r13 load after the call to FIND_PTE, and use r13 instead of r10 for storing fault address. This will allow using r10 freely in FIND_PTE in following patch to handle hugepage size. Link: https://lkml.kernel.org/r/a3ee563ad5b13c891a15d3aae6c136c44ce8aa63.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christophe Leroy
|
276d5affbb |
powerpc/e500: don't pre-check write access on data TLB error
Don't pre-check write access on read-only pages on data TLB error. Load the TLB anyway and take a DSI exception when it happens. This avoids reading SPRN_ESR at every data TLB error exception. Link: https://lkml.kernel.org/r/8525518e1657d6032b7e980c1888102828d66950.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christophe Leroy
|
6b0e82791b |
powerpc/e500: switch to 64 bits PGD on 85xx (32 bits)
At the time being when CONFIG_PTE_64BIT is selected, PTE entries are 64 bits but PGD entries are still 32 bits. In order to allow leaf PMD entries, switch the PGD to 64 bits entries. Link: https://lkml.kernel.org/r/ca85397df02564e5edc3a3c27b55cf43af3e4ef3.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Christophe Leroy
|
0549e76663 |
powerpc/8xx: rework support for 8M pages using contiguous PTE entries
In order to fit better with standard Linux page tables layout, add support for 8M pages using contiguous PTE entries in a standard page table. Page tables will then be populated with 1024 similar entries and two PMD entries will point to that page table. The PMD entries also get a flag to tell it is addressing an 8M page, this is required for the HW tablewalk assistance. Link: https://lkml.kernel.org/r/8693d9a0408371043ca63bf9e4a9c140667af63e.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Michael Ellerman
|
0db46aaabe |
powerpc/64e: drop unused TLB miss handlers
There are two possibilities for book3e_htw_mode, PPC_HTW_E6500 or PPC_HTW_NONE. The TLB miss handlers are patched to use, respectively: - exc_[data|indstruction]_tlb_miss_e6500_book3e - exc_[data|indstruction]_tlb_miss_bolted_book3e Which means the default handlers are never used. Remove those, and use the bolted handlers (PPC_HTW_NONE) by default. Link: https://lkml.kernel.org/r/9a670adc1771fb1871fba93ace5372f7eadc286f.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Michael Ellerman
|
aca69900d7 |
powerpc/64e: drop MMU_FTR_TYPE_FSL_E checks in 64-bit code
All 64-bit Book3E have MMU_FTR_TYPE_FSL_E, since A2 was removed, so remove checks for it in 64-bit only code. Link: https://lkml.kernel.org/r/2b0b0bc9752e6cece222e4e2050358da70bb631d.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
c6653f49e4 |
powerpc fixes for 6.10 #4
- Fix unnecessary copy to 0 when kernel is booted at address 0. - Fix usercopy crash when dumping dtl via debugfs. - Avoid possible crash when PCI hotplug races with error handling. - Fix kexec crash caused by scv being disabled before other CPUs call-in. - Fix powerpc selftests build with USERCFLAGS set. Thanks to: Anjali K, Ganesh Goudar, Gautam Menghani, Jinglin Wen, Nicholas Piggin, Sourabh Jain, Srikar Dronamraju, Vishal Chourasia. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmaJyekTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgN6zD/0d8lPrWQ3TRkS+jLdhsDfHc+qMW1/N DuxPrVJl4qLgvYPEZWAF5+uWuhJurmbTCXNRnUQ5HHfwPtkU77pbTNiQcCAYsy2l W35DYE+vqnNNid9hFCgvLoSrGDA0qvcGpMVBVfqjRygOLxpWztmV7S7q9E0CvuWg ESXt4HNyPiRVl4ufPam12lmiEDh+PycsD24U6FSjaTxqvd4kwSTyLDLfmI+gTaqx 1PdzKt0c3g2QhDBoR7cpRaTCRamKRPwqFHANMUAkIXm3fIdHpWOEF03lvTsA0OgA 0ktzaEUhCPHr6kjAizbybmgXZovh/eoZc9wUd7zCWdSGNiq8FlhsmFuIuScrbQ7k YCYz+X/KoqNk2VbxKkDneO6/H2juzu9wzzK5OMcKsVGSWi7+DjBp9FBDiFCfb3VQ ZMuc71dOTtA7fDqWDnYtFMtEwrUGpTixE5xPNBzbzIVkKdSjb1H3RLd/mhu7+X/B eVjFOPj7mRburIX5M3UllvsdbOiLqjbg6P28JL3qG6qT/OiiQAmF5apKvf1LNvPV xgJHGPemlAkVNihg6Xu8+up+wcPuMi13osjA9FZkLUdLXK4O+d3q/K/Rf7TGjT2X rBNhCd3lRd6gmpa52ujm5X0f9czEJxMrfy0Ota3L8YFUb7hW8JK6fgcwSispXGSI o/JUlQ30K6JAjA== =B1pw -----END PGP SIGNATURE----- Merge tag 'powerpc-6.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix unnecessary copy to 0 when kernel is booted at address 0 - Fix usercopy crash when dumping dtl via debugfs - Avoid possible crash when PCI hotplug races with error handling - Fix kexec crash caused by scv being disabled before other CPUs call-in - Fix powerpc selftests build with USERCFLAGS set Thanks to Anjali K, Ganesh Goudar, Gautam Menghani, Jinglin Wen, Nicholas Piggin, Sourabh Jain, Srikar Dronamraju, and Vishal Chourasia. * tag 'powerpc-6.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix build with USERCFLAGS set powerpc/pseries: Fix scv instruction crash with kexec powerpc/eeh: avoid possible crash when edev->pdev changes powerpc/pseries: Whitelist dtl slub object for copying to userspace powerpc/64s: Fix unnecessary copy to 0 when kernel is booted at address 0 |
||
|
Krishna Kumar
|
20ce0c247b |
powerpc/pci: Hotplug driver bridge support
There is an issue with the hotplug operation when it's done on the bridge/switch slot. The bridge-port and devices behind the bridge, which become offline by hot-unplug operation, don't get hot-plugged/enabled by doing hot-plug operation on that slot. Only the first port of the bridge gets enabled and the remaining port/devices remain unplugged. The hot plug/unplug operation is done by the hotplug driver (drivers/pci/ hotplug/pnv_php.c). This behavior is due to missing code for the switch/bridge. The existing driver depends on pci_hp_add_devices() function for device enablement. This function calls pci_scan_slot() on only one device-node/port of the bridge, not on all the siblings' device-node/port. The missing code needs to be added which will find all the sibling device-nodes/bridge-ports and will run explicit pci_scan_slot() on those. A new function has been added for this purpose which is invoked from pci_hp_add_devices(). This new function traverse_siblings_and_scan_slot() gets all the sibling bridge-ports by traversal and explicitly invokes pci_scan_slot() on them. Tested-by: Shawn Anastasio <sanastasio@raptorengineering.com> Signed-off-by: Krishna Kumar <krishnak@linux.ibm.com> [mpe: Move the code into pci-hotplug.c] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240701074513.94873-3-krishnak@linux.ibm.com |
||
|
Jeff Johnson
|
9c5f64734f |
powerpc: add missing MODULE_DESCRIPTION() macros
With ARCH=powerpc, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/kernel/rtas_flash.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/sysdev/rtc_cmos_setup.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/platforms/pseries/papr_scm.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/platforms/cell/spufs/spufs.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/platforms/cell/cbe_thermal.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/platforms/cell/cpufreq_spudemand.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/powerpc/platforms/cell/cbe_powerbutton.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). This includes 85xx/t1042rdb_diu.c and chrp/nvram.c which, although they did not produce a warning with the powerpc allmodconfig configuration, may cause this warning with other configurations. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240615-md-powerpc-arch-powerpc-v1-1-ba4956bea47a@quicinc.com |
||
|
Nathan Lynch
|
7bdd1c6c87 |
powerpc/prom: Add CPU info to hardware description string later
cur_cpu_spec->cpu_name is appended to ppc_hw_desc before cur_cpu_spec
has taken on its final value. This is illustrated on pseries by
comparing the CPU name as reported at boot ("POWER8E (raw)") to the
contents of /proc/cpuinfo ("POWER8 (architected)"):
$ dmesg | grep Hardware
Hardware name: IBM,8408-E8E POWER8E (raw) 0x4b0201 0xf000004 \
of:IBM,FW860.50 (SV860_146) hv:phyp pSeries
$ grep -m 1 ^cpu /proc/cpuinfo
cpu : POWER8 (architected), altivec supported
Some 44x models would appear to be affected as well; see
identical_pvr_fixup().
This results in incorrect CPU information in stack dumps --
ppc_hw_desc is an input to dump_stack_set_arch_desc().
Delay gathering the CPU name until after all potential calls to
identify_cpu().
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes:
|
||
|
Nathan Lynch
|
0974d03eb4 |
powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
Smatch warns: arch/powerpc/kernel/rtas.c:1932 __do_sys_rtas() warn: potential spectre issue 'args.args' [r] (local cap) The 'nargs' and 'nret' locals come directly from a user-supplied buffer and are used as indexes into a small stack-based array and as inputs to copy_to_user() after they are subject to bounds checks. Use array_index_nospec() after the bounds checks to clamp these values for speculative execution. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reported-by: Breno Leitao <leitao@debian.org> Reviewed-by: Breno Leitao <leitao@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240530-sys_rtas-nargs-nret-v1-1-129acddd4d89@linux.ibm.com |
||
|
Michael Ellerman
|
7bf5f0562b |
powerpc: Replace CONFIG_4xx with CONFIG_44x
Replace 4xx usage with 44x, and replace 4xx_SOC with 44x. Also, as pointed out by Christophe, if 44x || BOOKE can be simplified to just test BOOKE, because 44x always selects BOOKE. Retain the CONFIG_4xx symbol, as there are drivers that use it to mean 4xx || 44x, those will need updating before CONFIG_4xx can be removed. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240628121201.130802-6-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
002b27a51b |
powerpc/4xx: Remove CONFIG_BOOKE_OR_40x
Now that 40x is gone, replace CONFIG_BOOKE_OR_40x by CONFIG_BOOKE. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240628121201.130802-5-mpe@ellerman.id.au |
||
|
Christophe Leroy
|
732b32daef |
powerpc: Remove core support for 40x
Now that 40x platforms have gone, remove support for 40x in the core of powerpc arch. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240628121201.130802-4-mpe@ellerman.id.au |
||
|
Shivaprasad G Bhat
|
f431a8cde7 |
powerpc/iommu: Reimplement the iommu_table_group_ops for pSeries
PPC64 IOMMU API defines iommu_table_group_ops which handles DMA windows for PEs, their ownership transfer, create/set/unset the TCE tables for the Dynamic DMA wundows(DDW). VFIOS uses these APIs for support on POWER. The commit |
||
|
Shivaprasad G Bhat
|
35146eadcb |
powerpc/iommu: Move dev_has_iommu_table() to iommu.c
Move function dev_has_iommu_table() to powerpc/kernel/iommu.c as it is going to be used by machine specific iommu code as well in subsequent patches. Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/171923274748.1397.6274953248403106679.stgit@linux.ibm.com |
||
|
Shivaprasad G Bhat
|
b09c031d94 |
powerpc/iommu: Move pSeries specific functions to pseries/iommu.c
The PowerNV specific table_group_ops are defined in powernv/pci-ioda.c. The pSeries specific table_group_ops are sitting in the generic powerpc file. Move it to where it actually belong(pseries/iommu.c). The functions are currently defined even for CONFIG_PPC_POWERNV which are unused on PowerNV. Only code movement, no functional changes intended. Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/171923269701.1397.15758640002786937132.stgit@linux.ibm.com |
||
|
Arnd Bergmann
|
b1e31c134a |
powerpc: restore some missing spu syscalls
A couple of system calls were inadventently removed from the table during
a bugfix for 32-bit powerpc entry. Restore the original behavior.
Fixes:
|
||
|
Arnd Bergmann
|
d3882564a7 |
syscalls: fix compat_sys_io_pgetevents_time64 usage
Using sys_io_pgetevents() as the entry point for compat mode tasks works almost correctly, but misses the sign extension for the min_nr and nr arguments. This was addressed on parisc by switching to compat_sys_io_pgetevents_time64() in commit |
||
|
Ganesh Goudar
|
a1216e62d0 |
powerpc/eeh: avoid possible crash when edev->pdev changes
If a PCI device is removed during eeh_pe_report_edev(), edev->pdev will change and can cause a crash, hold the PCI rescan/remove lock while taking a copy of edev->pdev->bus. Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240617140240.580453-1-ganeshgr@linux.ibm.com |
||
|
Jinglin Wen
|
13fc6c1759 |
powerpc/64s: Fix unnecessary copy to 0 when kernel is booted at address 0
According to the code logic, when the kernel is loaded at address 0, no
copying operation should be performed, but it is currently being done.
This patch fixes the issue where the kernel code was incorrectly
duplicated to address 0 when booting from address 0.
Fixes:
|
||
|
Jeff Xu
|
ff388fe5c4 |
mseal: wire up mseal syscall
Patch series "Introduce mseal", v10.
This patchset proposes a new mseal() syscall for the Linux kernel.
In a nutshell, mseal() protects the VMAs of a given virtual memory range
against modifications, such as changes to their permission bits.
Modern CPUs support memory permissions, such as the read/write (RW) and
no-execute (NX) bits. Linux has supported NX since the release of kernel
version 2.6.8 in August 2004 [1]. The memory permission feature improves
the security stance on memory corruption bugs, as an attacker cannot
simply write to arbitrary memory and point the code to it. The memory
must be marked with the X bit, or else an exception will occur.
Internally, the kernel maintains the memory permissions in a data
structure called VMA (vm_area_struct). mseal() additionally protects the
VMA itself against modifications of the selected seal type.
Memory sealing is useful to mitigate memory corruption issues where a
corrupted pointer is passed to a memory management system. For example,
such an attacker primitive can break control-flow integrity guarantees
since read-only memory that is supposed to be trusted can become writable
or .text pages can get remapped. Memory sealing can automatically be
applied by the runtime loader to seal .text and .rodata pages and
applications can additionally seal security critical data at runtime. A
similar feature already exists in the XNU kernel with the
VM_FLAGS_PERMANENT [3] flag and on OpenBSD with the mimmutable syscall
[4]. Also, Chrome wants to adopt this feature for their CFI work [2] and
this patchset has been designed to be compatible with the Chrome use case.
Two system calls are involved in sealing the map: mmap() and mseal().
The new mseal() is an syscall on 64 bit CPU, and with following signature:
int mseal(void addr, size_t len, unsigned long flags)
addr/len: memory range.
flags: reserved.
mseal() blocks following operations for the given memory range.
1> Unmapping, moving to another location, and shrinking the size,
via munmap() and mremap(), can leave an empty space, therefore can
be replaced with a VMA with a new set of attributes.
2> Moving or expanding a different VMA into the current location,
via mremap().
3> Modifying a VMA via mmap(MAP_FIXED).
4> Size expansion, via mremap(), does not appear to pose any specific
risks to sealed VMAs. It is included anyway because the use case is
unclear. In any case, users can rely on merging to expand a sealed VMA.
5> mprotect() and pkey_mprotect().
6> Some destructive madvice() behaviors (e.g. MADV_DONTNEED) for anonymous
memory, when users don't have write permission to the memory. Those
behaviors can alter region contents by discarding pages, effectively a
memset(0) for anonymous memory.
The idea that inspired this patch comes from Stephen Röttger’s work in
V8 CFI [5]. Chrome browser in ChromeOS will be the first user of this
API.
Indeed, the Chrome browser has very specific requirements for sealing,
which are distinct from those of most applications. For example, in the
case of libc, sealing is only applied to read-only (RO) or read-execute
(RX) memory segments (such as .text and .RELRO) to prevent them from
becoming writable, the lifetime of those mappings are tied to the lifetime
of the process.
Chrome wants to seal two large address space reservations that are managed
by different allocators. The memory is mapped RW- and RWX respectively
but write access to it is restricted using pkeys (or in the future ARM
permission overlay extensions). The lifetime of those mappings are not
tied to the lifetime of the process, therefore, while the memory is
sealed, the allocators still need to free or discard the unused memory.
For example, with madvise(DONTNEED).
However, always allowing madvise(DONTNEED) on this range poses a security
risk. For example if a jump instruction crosses a page boundary and the
second page gets discarded, it will overwrite the target bytes with zeros
and change the control flow. Checking write-permission before the discard
operation allows us to control when the operation is valid. In this case,
the madvise will only succeed if the executing thread has PKEY write
permissions and PKRU changes are protected in software by control-flow
integrity.
Although the initial version of this patch series is targeting the Chrome
browser as its first user, it became evident during upstream discussions
that we would also want to ensure that the patch set eventually is a
complete solution for memory sealing and compatible with other use cases.
The specific scenario currently in mind is glibc's use case of loading and
sealing ELF executables. To this end, Stephen is working on a change to
glibc to add sealing support to the dynamic linker, which will seal all
non-writable segments at startup. Once this work is completed, all
applications will be able to automatically benefit from these new
protections.
In closing, I would like to formally acknowledge the valuable
contributions received during the RFC process, which were instrumental in
shaping this patch:
Jann Horn: raising awareness and providing valuable insights on the
destructive madvise operations.
Liam R. Howlett: perf optimization.
Linus Torvalds: assisting in defining system call signature and scope.
Theo de Raadt: sharing the experiences and insight gained from
implementing mimmutable() in OpenBSD.
MM perf benchmarks
==================
This patch adds a loop in the mprotect/munmap/madvise(DONTNEED) to
check the VMAs’ sealing flag, so that no partial update can be made,
when any segment within the given memory range is sealed.
To measure the performance impact of this loop, two tests are developed.
[8]
The first is measuring the time taken for a particular system call,
by using clock_gettime(CLOCK_MONOTONIC). The second is using
PERF_COUNT_HW_REF_CPU_CYCLES (exclude user space). Both tests have
similar results.
The tests have roughly below sequence:
for (i = 0; i < 1000, i++)
create 1000 mappings (1 page per VMA)
start the sampling
for (j = 0; j < 1000, j++)
mprotect one mapping
stop and save the sample
delete 1000 mappings
calculates all samples.
Below tests are performed on Intel(R) Pentium(R) Gold 7505 @ 2.00GHz,
4G memory, Chromebook.
Based on the latest upstream code:
The first test (measuring time)
syscall__ vmas t t_mseal delta_ns per_vma %
munmap__ 1 909 944 35 35 104%
munmap__ 2 1398 1502 104 52 107%
munmap__ 4 2444 2594 149 37 106%
munmap__ 8 4029 4323 293 37 107%
munmap__ 16 6647 6935 288 18 104%
munmap__ 32 11811 12398 587 18 105%
mprotect 1 439 465 26 26 106%
mprotect 2 1659 1745 86 43 105%
mprotect 4 3747 3889 142 36 104%
mprotect 8 6755 6969 215 27 103%
mprotect 16 13748 14144 396 25 103%
mprotect 32 27827 28969 1142 36 104%
madvise_ 1 240 262 22 22 109%
madvise_ 2 366 442 76 38 121%
madvise_ 4 623 751 128 32 121%
madvise_ 8 1110 1324 215 27 119%
madvise_ 16 2127 2451 324 20 115%
madvise_ 32 4109 4642 534 17 113%
The second test (measuring cpu cycle)
syscall__ vmas cpu cmseal delta_cpu per_vma %
munmap__ 1 1790 1890 100 100 106%
munmap__ 2 2819 3033 214 107 108%
munmap__ 4 4959 5271 312 78 106%
munmap__ 8 8262 8745 483 60 106%
munmap__ 16 13099 14116 1017 64 108%
munmap__ 32 23221 24785 1565 49 107%
mprotect 1 906 967 62 62 107%
mprotect 2 3019 3203 184 92 106%
mprotect 4 6149 6569 420 105 107%
mprotect 8 9978 10524 545 68 105%
mprotect 16 20448 21427 979 61 105%
mprotect 32 40972 42935 1963 61 105%
madvise_ 1 434 497 63 63 115%
madvise_ 2 752 899 147 74 120%
madvise_ 4 1313 1513 200 50 115%
madvise_ 8 2271 2627 356 44 116%
madvise_ 16 4312 4883 571 36 113%
madvise_ 32 8376 9319 943 29 111%
Based on the result, for 6.8 kernel, sealing check adds
20-40 nano seconds, or around 50-100 CPU cycles, per VMA.
In addition, I applied the sealing to 5.10 kernel:
The first test (measuring time)
syscall__ vmas t tmseal delta_ns per_vma %
munmap__ 1 357 390 33 33 109%
munmap__ 2 442 463 21 11 105%
munmap__ 4 614 634 20 5 103%
munmap__ 8 1017 1137 120 15 112%
munmap__ 16 1889 2153 263 16 114%
munmap__ 32 4109 4088 -21 -1 99%
mprotect 1 235 227 -7 -7 97%
mprotect 2 495 464 -30 -15 94%
mprotect 4 741 764 24 6 103%
mprotect 8 1434 1437 2 0 100%
mprotect 16 2958 2991 33 2 101%
mprotect 32 6431 6608 177 6 103%
madvise_ 1 191 208 16 16 109%
madvise_ 2 300 324 24 12 108%
madvise_ 4 450 473 23 6 105%
madvise_ 8 753 806 53 7 107%
madvise_ 16 1467 1592 125 8 108%
madvise_ 32 2795 3405 610 19 122%
The second test (measuring cpu cycle)
syscall__ nbr_vma cpu cmseal delta_cpu per_vma %
munmap__ 1 684 715 31 31 105%
munmap__ 2 861 898 38 19 104%
munmap__ 4 1183 1235 51 13 104%
munmap__ 8 1999 2045 46 6 102%
munmap__ 16 3839 3816 -23 -1 99%
munmap__ 32 7672 7887 216 7 103%
mprotect 1 397 443 46 46 112%
mprotect 2 738 788 50 25 107%
mprotect 4 1221 1256 35 9 103%
mprotect 8 2356 2429 72 9 103%
mprotect 16 4961 4935 -26 -2 99%
mprotect 32 9882 10172 291 9 103%
madvise_ 1 351 380 29 29 108%
madvise_ 2 565 615 49 25 109%
madvise_ 4 872 933 61 15 107%
madvise_ 8 1508 1640 132 16 109%
madvise_ 16 3078 3323 245 15 108%
madvise_ 32 5893 6704 811 25 114%
For 5.10 kernel, sealing check adds 0-15 ns in time, or 10-30
CPU cycles, there is even decrease in some cases.
It might be interesting to compare 5.10 and 6.8 kernel
The first test (measuring time)
syscall__ vmas t_5_10 t_6_8 delta_ns per_vma %
munmap__ 1 357 909 552 552 254%
munmap__ 2 442 1398 956 478 316%
munmap__ 4 614 2444 1830 458 398%
munmap__ 8 1017 4029 3012 377 396%
munmap__ 16 1889 6647 4758 297 352%
munmap__ 32 4109 11811 7702 241 287%
mprotect 1 235 439 204 204 187%
mprotect 2 495 1659 1164 582 335%
mprotect 4 741 3747 3006 752 506%
mprotect 8 1434 6755 5320 665 471%
mprotect 16 2958 13748 10790 674 465%
mprotect 32 6431 27827 21397 669 433%
madvise_ 1 191 240 49 49 125%
madvise_ 2 300 366 67 33 122%
madvise_ 4 450 623 173 43 138%
madvise_ 8 753 1110 357 45 147%
madvise_ 16 1467 2127 660 41 145%
madvise_ 32 2795 4109 1314 41 147%
The second test (measuring cpu cycle)
syscall__ vmas cpu_5_10 c_6_8 delta_cpu per_vma %
munmap__ 1 684 1790 1106 1106 262%
munmap__ 2 861 2819 1958 979 327%
munmap__ 4 1183 4959 3776 944 419%
munmap__ 8 1999 8262 6263 783 413%
munmap__ 16 3839 13099 9260 579 341%
munmap__ 32 7672 23221 15549 486 303%
mprotect 1 397 906 509 509 228%
mprotect 2 738 3019 2281 1140 409%
mprotect 4 1221 6149 4929 1232 504%
mprotect 8 2356 9978 7622 953 423%
mprotect 16 4961 20448 15487 968 412%
mprotect 32 9882 40972 31091 972 415%
madvise_ 1 351 434 82 82 123%
madvise_ 2 565 752 186 93 133%
madvise_ 4 872 1313 442 110 151%
madvise_ 8 1508 2271 763 95 151%
madvise_ 16 3078 4312 1234 77 140%
madvise_ 32 5893 8376 2483 78 142%
From 5.10 to 6.8
munmap: added 250-550 ns in time, or 500-1100 in cpu cycle, per vma.
mprotect: added 200-750 ns in time, or 500-1200 in cpu cycle, per vma.
madvise: added 33-50 ns in time, or 70-110 in cpu cycle, per vma.
In comparison to mseal, which adds 20-40 ns or 50-100 CPU cycles, the
increase from 5.10 to 6.8 is significantly larger, approximately ten times
greater for munmap and mprotect.
When I discuss the mm performance with Brian Makin, an engineer who worked
on performance, it was brought to my attention that such performance
benchmarks, which measuring millions of mm syscall in a tight loop, may
not accurately reflect real-world scenarios, such as that of a database
service. Also this is tested using a single HW and ChromeOS, the data
from another HW or distribution might be different. It might be best to
take this data with a grain of salt.
This patch (of 5):
Wire up mseal syscall for all architectures.
Link: https://lkml.kernel.org/r/20240415163527.626541-1-jeffxu@chromium.org
Link: https://lkml.kernel.org/r/20240415163527.626541-2-jeffxu@chromium.org
Signed-off-by: Jeff Xu <jeffxu@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Jann Horn <jannh@google.com> [Bug #2]
Cc: Jeff Xu <jeffxu@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Stephen Röttger <sroettger@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Amer Al Shanawany <amer.shanawany@gmail.com>
Cc: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Linus Torvalds
|
3eb3c33c1d |
asm-generic cleanups for 6.10
These are a few cross-architecture cleanup patches:
- Thomas Zimmermann works on separating fbdev support from the asm/video.h
contents that may be used by either the old fbdev drivers or the
newer drm display code.
- Thorsten Blum contributes cleanups for the generic bitops code
and asm-generic/bug.h
- I remove the orphaned include/asm-generic/page.h header that used to
included by long-removed mmu-less architectures.
-----BEGIN PGP SIGNATURE-----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=riCs
-----END PGP SIGNATURE-----
Merge tag 'asm-generic-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"These are a few cross-architecture cleanup patches:
- separate out fbdev support from the asm/video.h contents that may
be used by either the old fbdev drivers or the newer drm display
code (Thomas Zimmermann)
- cleanups for the generic bitops code and asm-generic/bug.h
(Thorsten Blum)
- remove the orphaned include/asm-generic/page.h header that used to
be included by long-removed mmu-less architectures (me)"
* tag 'asm-generic-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
arch: Fix name collision with ACPI's video.o
bug: Improve comment
asm-generic: remove unused asm-generic/page.h
arch: Rename fbdev header and source files
arch: Remove struct fb_info from video helpers
arch: Select fbdev helpers with CONFIG_VIDEO
bitops: Change function return types from long to int
|
||
|
Linus Torvalds
|
61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZkgQYwAKCRDdBJ7gKXxA
jrdKAP9WVJdpEcXxpoub/vVE0UWGtffr8foifi9bCwrQrGh5mgEAx7Yf0+d/oBZB
nvA4E0DcPrUAFy144FNM0NTCb7u9vAw=
=V3R/
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
|
||
|
Linus Torvalds
|
ff9a79307f |
Kbuild updates for v6.10
- Avoid 'constexpr', which is a keyword in C23
- Allow 'dtbs_check' and 'dt_compatible_check' run independently of
'dt_binding_check'
- Fix weak references to avoid GOT entries in position-independent
code generation
- Convert the last use of 'optional' property in arch/sh/Kconfig
- Remove support for the 'optional' property in Kconfig
- Remove support for Clang's ThinLTO caching, which does not work with
the .incbin directive
- Change the semantics of $(src) so it always points to the source
directory, which fixes Makefile inconsistencies between upstream and
downstream
- Fix 'make tar-pkg' for RISC-V to produce a consistent package
- Provide reasonable default coverage for objtool, sanitizers, and
profilers
- Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
- Remove the last use of tristate choice in drivers/rapidio/Kconfig
- Various cleanups and fixes in Kconfig
-----BEGIN PGP SIGNATURE-----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=D5B/
-----END PGP SIGNATURE-----
Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Avoid 'constexpr', which is a keyword in C23
- Allow 'dtbs_check' and 'dt_compatible_check' run independently of
'dt_binding_check'
- Fix weak references to avoid GOT entries in position-independent code
generation
- Convert the last use of 'optional' property in arch/sh/Kconfig
- Remove support for the 'optional' property in Kconfig
- Remove support for Clang's ThinLTO caching, which does not work with
the .incbin directive
- Change the semantics of $(src) so it always points to the source
directory, which fixes Makefile inconsistencies between upstream and
downstream
- Fix 'make tar-pkg' for RISC-V to produce a consistent package
- Provide reasonable default coverage for objtool, sanitizers, and
profilers
- Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
- Remove the last use of tristate choice in drivers/rapidio/Kconfig
- Various cleanups and fixes in Kconfig
* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
kconfig: use sym_get_choice_menu() in sym_check_prop()
rapidio: remove choice for enumeration
kconfig: lxdialog: remove initialization with A_NORMAL
kconfig: m/nconf: merge two item_add_str() calls
kconfig: m/nconf: remove dead code to display value of bool choice
kconfig: m/nconf: remove dead code to display children of choice members
kconfig: gconf: show checkbox for choice correctly
kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
Makefile: remove redundant tool coverage variables
kbuild: provide reasonable defaults for tool coverage
modules: Drop the .export_symbol section from the final modules
kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
kconfig: use sym_get_choice_menu() in conf_write_defconfig()
kconfig: add sym_get_choice_menu() helper
kconfig: turn defaults and additional prompt for choice members into error
kconfig: turn missing prompt for choice members into error
kconfig: turn conf_choice() into void function
kconfig: use linked list in sym_set_changed()
kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
kconfig: gconf: remove debug code
...
|
||
|
Linus Torvalds
|
70a663205d |
Probes updates for v6.10:
- tracing/probes: Adding new pseudo-types %pd and %pD support for dumping
dentry name from 'struct dentry *' and file name from 'struct file *'.
- uprobes: Some performance optimizations have been done.
. Speed up the BPF uprobe event by delaying the fetching of the uprobe
event arguments that are not used in BPF.
. Avoid locking by speculatively checking whether uprobe event is valid.
. Reduce lock contention by using read/write_lock instead of spinlock for
uprobe list operation. This improved BPF uprobe benchmark result 43% on
average.
- rethook: Removes non-fatal warning messages when tracing stack from BPF
and skip rcu_is_watching() validation in rethook if possible.
- objpool: Optimizing objpool (which is used by kretprobes and fprobe as
rethook backend storage) by inlining functions and avoid caching nr_cpu_ids
because it is a const value.
- fprobe: Add entry/exit callbacks types (code cleanup)
- kprobes: Check ftrace was killed in kprobes if it uses ftrace.
-----BEGIN PGP SIGNATURE-----
iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmZFUxsbHG1hc2FtaS5o
aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8b+fIH/A96/SeC5WRLhXmHfTCM
IvKUea2n0b0oV/2pVfHqfkCBTICuUZ97Opd9VH9jLtjBOTh0fUOGZ2DNVGdSYfWm
IIkS5dhuZxHXrSHEVYykwLHI3AOL7Q6Ny9EmOg1CNMidUkPMNtBvppsBYPlFU/B/
qQJAvOdkVOnNITCaas0+MNgepoVVKdJzdNQ1I4WrGyG8isCZBaCYKo2QcGyheCNN
y8NXvnVHgmgHQ8nTaeE5AawclFzFnhwHfPQPe1kiyGrx15b8K+VYmaZxPKv33A1a
KT3TKJ1Ep7s7iWFh2iPVJzIwOXCmSnvNTKfNx/MDuKtO7UVfFwytoMEaekbmv3bG
VqM=
=n/mW
-----END PGP SIGNATURE-----
Merge tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
- tracing/probes: Add new pseudo-types %pd and %pD support for dumping
dentry name from 'struct dentry *' and file name from 'struct file *'
- uprobes performance optimizations:
- Speed up the BPF uprobe event by delaying the fetching of the
uprobe event arguments that are not used in BPF
- Avoid locking by speculatively checking whether uprobe event is
valid
- Reduce lock contention by using read/write_lock instead of
spinlock for uprobe list operation. This improved BPF uprobe
benchmark result 43% on average
- rethook: Remove non-fatal warning messages when tracing stack from
BPF and skip rcu_is_watching() validation in rethook if possible
- objpool: Optimize objpool (which is used by kretprobes and fprobe as
rethook backend storage) by inlining functions and avoid caching
nr_cpu_ids because it is a const value
- fprobe: Add entry/exit callbacks types (code cleanup)
- kprobes: Check ftrace was killed in kprobes if it uses ftrace
* tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobe/ftrace: bail out if ftrace was killed
selftests/ftrace: Fix required features for VFS type test case
objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids
objpool: enable inlining objpool_push() and objpool_pop() operations
rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()
ftrace: make extra rcu_is_watching() validation check optional
uprobes: reduce contention on uprobes_tree access
rethook: Remove warning messages printed for finding return address of a frame.
fprobe: Add entry/exit callbacks types
selftests/ftrace: add fprobe test cases for VFS type "%pd" and "%pD"
selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD"
Documentation: tracing: add new type '%pd' and '%pD' for kprobe
tracing/probes: support '%pD' type for print struct file's name
tracing/probes: support '%pd' type for print struct dentry's name
uprobes: add speculative lockless system-wide uprobe filter check
uprobes: prepare uprobe args buffer lazily
uprobes: encapsulate preparation of uprobe args buffer
|
||
|
Linus Torvalds
|
ff2632d7d0 |
powerpc updates for 6.10
- Enable BPF Kernel Functions (kfuncs) in the powerpc BPF JIT.
- Allow per-process DEXCR (Dynamic Execution Control Register) settings via
prctl, notably NPHIE which controls hashst/hashchk for ROP protection.
- Install powerpc selftests in sub-directories. Note this changes the way
run_kselftest.sh needs to be invoked for powerpc selftests.
- Change fadump (Firmware Assisted Dump) to better handle memory add/remove.
- Add support for passing additional parameters to the fadump kernel.
- Add support for updating the kdump image on CPU/memory add/remove events.
- Other small features, cleanups and fixes.
Thanks to: Andrew Donnellan, Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann,
Benjamin Gray, Bjorn Helgaas, Christian Zigotzky, Christophe Jaillet, Christophe
Leroy, Colin Ian King, Cédric Le Goater, Dr. David Alan Gilbert, Erhard Furtner,
Frank Li, GUO Zihua, Ganesh Goudar, Geoff Levand, Ghanshyam Agrawal, Greg Kurz,
Hari Bathini, Joel Stanley, Justin Stitt, Kunwu Chan, Li Yang, Lidong Zhong,
Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Matthias Schiffer,
Naresh Kamboju, Nathan Chancellor, Nathan Lynch, Naveen N Rao, Nicholas
Miehlbradt, Ran Wang, Randy Dunlap, Ritesh Harjani, Sachin Sant, Shirisha Ganta,
Shrikanth Hegde, Sourabh Jain, Stephen Rothwell, sundar, Thorsten Blum, Vaibhav
Jain, Xiaowei Bao, Yang Li, Zhao Chenhui.
-----BEGIN PGP SIGNATURE-----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=GoCV
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Enable BPF Kernel Functions (kfuncs) in the powerpc BPF JIT.
- Allow per-process DEXCR (Dynamic Execution Control Register) settings
via prctl, notably NPHIE which controls hashst/hashchk for ROP
protection.
- Install powerpc selftests in sub-directories. Note this changes the
way run_kselftest.sh needs to be invoked for powerpc selftests.
- Change fadump (Firmware Assisted Dump) to better handle memory
add/remove.
- Add support for passing additional parameters to the fadump kernel.
- Add support for updating the kdump image on CPU/memory add/remove
events.
- Other small features, cleanups and fixes.
Thanks to Andrew Donnellan, Andy Shevchenko, Aneesh Kumar K.V, Arnd
Bergmann, Benjamin Gray, Bjorn Helgaas, Christian Zigotzky, Christophe
Jaillet, Christophe Leroy, Colin Ian King, Cédric Le Goater, Dr. David
Alan Gilbert, Erhard Furtner, Frank Li, GUO Zihua, Ganesh Goudar, Geoff
Levand, Ghanshyam Agrawal, Greg Kurz, Hari Bathini, Joel Stanley, Justin
Stitt, Kunwu Chan, Li Yang, Lidong Zhong, Madhavan Srinivasan, Mahesh
Salgaonkar, Masahiro Yamada, Matthias Schiffer, Naresh Kamboju, Nathan
Chancellor, Nathan Lynch, Naveen N Rao, Nicholas Miehlbradt, Ran Wang,
Randy Dunlap, Ritesh Harjani, Sachin Sant, Shirisha Ganta, Shrikanth
Hegde, Sourabh Jain, Stephen Rothwell, sundar, Thorsten Blum, Vaibhav
Jain, Xiaowei Bao, Yang Li, and Zhao Chenhui.
* tag 'powerpc-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (85 commits)
powerpc/fadump: Fix section mismatch warning
powerpc/85xx: fix compile error without CONFIG_CRASH_DUMP
powerpc/fadump: update documentation about bootargs_append
powerpc/fadump: pass additional parameters when fadump is active
powerpc/fadump: setup additional parameters for dump capture kernel
powerpc/pseries/fadump: add support for multiple boot memory regions
selftests/powerpc/dexcr: Fix spelling mistake "predicition" -> "prediction"
KVM: PPC: Book3S HV nestedv2: Fix an error handling path in gs_msg_ops_kvmhv_nestedv2_config_fill_info()
KVM: PPC: Fix documentation for ppc mmu caps
KVM: PPC: code cleanup for kvmppc_book3s_irqprio_deliver
KVM: PPC: Book3S HV nestedv2: Cancel pending DEC exception
powerpc/xmon: Check cpu id in commands "c#", "dp#" and "dx#"
powerpc/code-patching: Use dedicated memory routines for patching
powerpc/code-patching: Test patch_instructions() during boot
powerpc64/kasan: Pass virtual addresses to kasan_init_phys_region()
powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX
powerpc: Fix typos
powerpc/eeh: Fix spelling of the word "auxillary" and update comment
macintosh/ams: Fix unused variable warning
powerpc/Makefile: Remove bits related to the previous use of -mcmodel=large
...
|
||
|
Michael Ellerman
|
61700f816e |
powerpc/fadump: Fix section mismatch warning
With some compilers/configs fadump_setup_param_area() isn't inlined into
its caller (which is __init), leading to a section mismatch warning:
WARNING: modpost: vmlinux: section mismatch in reference:
fadump_setup_param_area+0x200 (section: .text.fadump_setup_param_area)
-> memblock_phys_alloc_range (section: .init.text)
Fix it by adding an __init annotation.
Fixes:
|
||
|
Stephen Brennan
|
1a7d0890dd |
kprobe/ftrace: bail out if ftrace was killed
If an error happens in ftrace, ftrace_kill() will prevent disarming kprobes. Eventually, the ftrace_ops associated with the kprobes will be freed, yet the kprobes will still be active, and when triggered, they will use the freed memory, likely resulting in a page fault and panic. This behavior can be reproduced quite easily, by creating a kprobe and then triggering a ftrace_kill(). For simplicity, we can simulate an ftrace error with a kernel module like [1]: [1]: https://github.com/brenns10/kernel_stuff/tree/master/ftrace_killer sudo perf probe --add commit_creds sudo perf trace -e probe:commit_creds # In another terminal make sudo insmod ftrace_killer.ko # calls ftrace_kill(), simulating bug # Back to perf terminal # ctrl-c sudo perf probe --del commit_creds After a short period, a page fault and panic would occur as the kprobe continues to execute and uses the freed ftrace_ops. While ftrace_kill() is supposed to be used only in extreme circumstances, it is invoked in FTRACE_WARN_ON() and so there are many places where an unexpected bug could be triggered, yet the system may continue operating, possibly without the administrator noticing. If ftrace_kill() does not panic the system, then we should do everything we can to continue operating, rather than leave a ticking time bomb. Link: https://lore.kernel.org/all/20240501162956.229427-1-stephen.s.brennan@oracle.com/ Signed-off-by: Stephen Brennan <stephen.s.brennan@oracle.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Guo Ren <guoren@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Masahiro Yamada
|
7f7f6f7ad6 |
Makefile: remove redundant tool coverage variables
Now Kbuild provides reasonable defaults for objtool, sanitizers, and profilers. Remove redundant variables. Note: This commit changes the coverage for some objects: - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV - include arch/sparc/vdso/vdso-image-*.o into UBSAN - include arch/sparc/vdso/vma.o into UBSAN - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vma.o into GCOV, KCOV - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOV I believe these are positive effects because all of them are kernel space objects. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Roberto Sassu <roberto.sassu@huawei.com> |
||
|
Mike Rapoport (IBM)
|
0a956d52e6 |
powerpc: use CONFIG_EXECMEM instead of CONFIG_MODULES where appropriate
There are places where CONFIG_MODULES guards the code that depends on memory allocation being done with module_alloc(). Replace CONFIG_MODULES with CONFIG_EXECMEM in such places. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Mike Rapoport (IBM)
|
0cc2dc4902 |
arch: make execmem setup available regardless of CONFIG_MODULES
execmem does not depend on modules, on the contrary modules use execmem. To make execmem available when CONFIG_MODULES=n, for instance for kprobes, split execmem_params initialization out from arch/*/kernel/module.c and compile it when CONFIG_EXECMEM=y Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Mike Rapoport (IBM)
|
1b750c2fbf |
powerpc: extend execmem_params for kprobes allocations
powerpc overrides kprobes::alloc_insn_page() to remove writable permissions when STRICT_MODULE_RWX is on. Add definition of EXECMEM_KRPOBES to execmem_params to allow using the generic kprobes::alloc_insn_page() with the desired permissions. As powerpc uses breakpoint instructions to inject kprobes, it does not need to constrain kprobe allocations to the modules area and can use the entire vmalloc address space. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Mike Rapoport (IBM)
|
223b5e57d0 |
mm/execmem, arch: convert remaining overrides of module_alloc to execmem
Extend execmem parameters to accommodate more complex overrides of module_alloc() by architectures. This includes specification of a fallback range required by arm, arm64 and powerpc, EXECMEM_MODULE_DATA type required by powerpc, support for allocation of KASAN shadow required by s390 and x86 and support for late initialization of execmem required by arm64. The core implementation of execmem_alloc() takes care of suppressing warnings when the initial allocation fails but there is a fallback range defined. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Song Liu <song@kernel.org> Tested-by: Liviu Dudau <liviu@dudau.co.uk> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Mike Rapoport (IBM)
|
12af2b83d0 |
mm: introduce execmem_alloc() and execmem_free()
module_alloc() is used everywhere as a mean to allocate memory for code. Beside being semantically wrong, this unnecessarily ties all subsystems that need to allocate code, such as ftrace, kprobes and BPF to modules and puts the burden of code allocation to the modules code. Several architectures override module_alloc() because of various constraints where the executable memory can be located and this causes additional obstacles for improvements of code allocation. Start splitting code allocation from modules by introducing execmem_alloc() and execmem_free() APIs. Initially, execmem_alloc() is a wrapper for module_alloc() and execmem_free() is a replacement of module_memfree() to allow updating all call sites to use the new APIs. Since architectures define different restrictions on placement, permissions, alignment and other parameters for memory that can be used by different subsystems that allocate executable memory, execmem_alloc() takes a type argument, that will be used to identify the calling subsystem and to allow architectures define parameters for ranges suitable for that subsystem. No functional changes. Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Song Liu <song@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Linus Torvalds
|
6e5a0c30b6 |
Scheduler changes for v6.10:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt. affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix.
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=obph
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
* tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
sched/pelt: Remove shift of thermal clock
sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
thermal/cpufreq: Remove arch_update_thermal_pressure()
sched/cpufreq: Take cpufreq feedback into account
cpufreq: Add a cpufreq pressure feedback for the scheduler
sched/fair: Fix update of rd->sg_overutilized
sched/vtime: Do not include <asm/vtime.h> header
s390/irq,nmi: Include <asm/vtime.h> header directly
s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
sched/vtime: Get rid of generic vtime_task_switch() implementation
sched/vtime: Remove confusing arch_vtime_task_switch() declaration
sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags
sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
sched/fair: Rename root_domain::overload to ::overloaded
sched/fair: Use helper functions to access root_domain::overload
sched/fair: Check root_domain::overload value before update
sched/fair: Combine EAS check with root_domain::overutilized access
sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
...
|
||
|
Hari Bathini
|
3416c9daa6 |
powerpc/fadump: pass additional parameters when fadump is active
Append the additional parameters passed/set in the dedicated parameter area (RTAS_FADUMP_PARAM_AREA) to bootargs in fadump capture kernel. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240509115755.519982-4-hbathini@linux.ibm.com |
||
|
Hari Bathini
|
683eab94da |
powerpc/fadump: setup additional parameters for dump capture kernel
For fadump case, passing additional parameters to dump capture kernel helps in minimizing the memory footprint for it and also provides the flexibility to disable components/modules, like hugepages, that are hindering the boot process of the special dump capture environment. Set up a dedicated parameter area to be passed to the capture kernel. This area type is defined as RTAS_FADUMP_PARAM_AREA. Sysfs attribute '/sys/kernel/fadump/bootargs_append' is exported to the userspace to specify the additional parameters to be passed to the capture kernel Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240509115755.519982-3-hbathini@linux.ibm.com |
||
|
Hari Bathini
|
78d5cc15fb |
powerpc/pseries/fadump: add support for multiple boot memory regions
Currently, fadump on pseries assumes a single boot memory region even though f/w supports more than one boot memory region. Add support for more boot memory regions to make the implementation flexible for any enhancements that introduce other region types. For this, rtas memory structure for fadump is updated to have multiple boot memory regions instead of just one. Additionally, methods responsible for creating the fadump memory structure during both the first and second kernel boot have been modified to take these multiple boot memory regions into account. Also, a new callback has been added to the fadump_ops structure to get the maximum boot memory regions supported by the platform. Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240509115755.519982-2-hbathini@linux.ibm.com |
||
|
Masahiro Yamada
|
b1992c3772 |
kbuild: use $(src) instead of $(srctree)/$(src) for source directory
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:
src := $(obj)
When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.
This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.
To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.
Going forward, the variables used in Makefiles will have the following
meanings:
$(obj) - directory in the object tree
$(src) - directory in the source tree (changed by this commit)
$(objtree) - the top of the kernel object tree
$(srctree) - the top of the kernel source tree
Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
|
||
|
Matthias Schiffer
|
ad679719d7 |
powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX
This register number is hardware-specific, rename it for clarity. FIXME comments are added in a few places where it seems like the wrong register is used. As I can't test this, only the rename is done with no functional change. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240124105031.45734-1-matthias.schiffer@ew.tq-group.com |
||
|
Bjorn Helgaas
|
0ddbbb8960 |
powerpc: Fix typos
Fix typos, most reported by "codespell arch/powerpc". Only touches comments, no code changes. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240103231605.1801364-8-helgaas@kernel.org |
||
|
Ghanshyam Agrawal
|
39434af10f |
powerpc/eeh: Fix spelling of the word "auxillary" and update comment
Fix spelling of the word "auxillary" in arch/powerpc/kernel/eeh_pe.c and arch/powerpc/include/asm/eeh.h. Also update the eeh_set_pe_aux_size() comment to include the units. Signed-off-by: Ghanshyam Agrawal <ghanshyam1898@gmail.com> [mpe: Squash into one commit] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/2ab034609285b21c309cd8ab26c937c846d37ee7.1703756365.git.ghanshyam1898@gmail.com |
||
|
Naveen N Rao
|
c330b50d8c |
powerpc/Makefile: Remove bits related to the previous use of -mcmodel=large
All supported compilers today (gcc v5.1+ and clang v11+) have support for -mcmodel=medium. As such, NO_MINIMAL_TOC is no longer being set. Remove NO_MINIMAL_TOC as well as the fallback to -mminimal-toc. Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240110141237.3179199-1-naveen@kernel.org |
||
|
GUO Zihua
|
473e2311f3 |
powerpc: Fix preserved memory size for int-vectors
The first 32k of memory is reserved for interrupt vectors, however for powerpc64 this might not be enough. Fix this by reserving the maximum size between 32k and the real size of interrupt vectors. Signed-off-by: GUO Zihua <guozihua@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240113080509.1598290-1-guozihua@huawei.com |
||
|
Masahiro Yamada
|
4f1dad6185 |
powerpc: remove unused *_syscall_64.o variables in Makefile
Commit
|
||
|
Benjamin Gray
|
628d701f2d |
powerpc/dexcr: Add DEXCR prctl interface
Now that we track a DEXCR on a per-task basis, individual tasks are free to configure it as they like. The interface is a pair of getter/setter prctl's that work on a single aspect at a time (multiple aspects at once is more difficult if there are different rules applied for each aspect, now or in future). The getter shows the current state of the process config, and the setter allows setting/clearing the aspect. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> [mpe: Account for PR_RISCV_SET_ICACHE_FLUSH_CTX, shrink some longs lines] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240417112325.728010-5-bgray@linux.ibm.com |
||
|
Thomas Zimmermann
|
2fd001cd36
|
arch: Rename fbdev header and source files
The per-architecture fbdev code has no dependencies on fbdev and can be used for any video-related subsystem. Rename the files to 'video'. Use video-sti.c on parisc as the source file depends on CONFIG_STI_CORE. On arc, arm, arm64, sh, and um the asm header file is an empty wrapper around the file in asm-generic. Let Kbuild generate the file. The build system does this automatically. Only um needs to generate video.h explicitly, so that it overrides the host architecture's header. The latter would otherwise interfere with the build. Further update all includes statements, include guards, and Makefiles. Also update a few strings and comments to refer to video instead of fbdev. v3: - arc, arm, arm64, sh: generate asm header via build system (Sam, Helge, Arnd) - um: rename fb.h to video.h - fix typo in commit message (Sam) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Benjamin Gray
|
bbd99922d0 |
powerpc/dexcr: Reset DEXCR value across exec
Inheriting the DEXCR across exec can have security and usability concerns. If a program is compiled with hash instructions it generally expects to run with NPHIE enabled. But if the parent process disables NPHIE then if it's not careful it will be disabled for any children too and the protection offered by hash checks is basically worthless. This patch introduces a per-process reset value that new execs in a particular process tree are initialized with. This enables fine grained control over what DEXCR value child processes run with by default. For example, containers running legacy binaries that expect hash instructions to act as NOPs could configure the reset value of the container root to control the default reset value for all members of the container. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> [mpe: Add missing SPDX tag on dexcr.c] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240417112325.728010-4-bgray@linux.ibm.com |
||
|
Benjamin Gray
|
75171f06c4 |
powerpc/dexcr: Track the DEXCR per-process
Add capability to make the DEXCR act as a per-process SPR. We do not yet have an interface for changing the values per task. We also expect the kernel to use a single DEXCR value across all tasks while in privileged state, so there is no need to synchronize after changing it (the userspace aspects will synchronize upon returning to userspace). Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240417112325.728010-3-bgray@linux.ibm.com |
||
|
Dr. David Alan Gilbert
|
4071739249 |
powerpc/module: Remove arch specific module bug stuff
The last function to reference module_bug_list went in 2008's commit |
||
|
Masahiro Yamada
|
b957df3b85 |
arch: use $(obj)/ instead of $(src)/ for preprocessed linker scripts
These are generated files. Prefix them with $(obj)/ instead of $(src)/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Helge Deller <deller@gmx.de> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> |
||
|
Ganesh Goudar
|
d1679b4fa1 |
powerpc/eeh: Permanently disable the removed device
When a device is hot removed on powernv, the hotplug driver clears the device's state. However, on pseries, if a device is removed by phyp after reaching the error threshold, the kernel remains unaware, leading to the device not being torn down. This prevents necessary remediation actions like failover. Permanently disable the device if the presence check fails. Also, in eeh_dev_check_failure in we may consider the error as false positive if the device is hotpluged out as the get_state call returns EEH_STATE_NOT_SUPPORT and we may end up not clearing the device state, so log the event if the state is not moved to permanent failure state. Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240422075737.1405551-1-ganeshgr@linux.ibm.com |
||
|
Sourabh Jain
|
bc446c5aca |
powerpc/fadump: add hotplug_ready sysfs interface
The elfcorehdr describes the CPUs and memory of the crashed kernel to
the kernel that captures the dump, known as the second or fadump kernel.
The elfcorehdr needs to be updated if the system's memory changes due to
memory hotplug or online/offline events.
Currently, memory hotplug events are monitored in userspace by udev
rules, and fadump is re-registered, which recreates the elfcorehdr with
the latest available memory in the system.
However, the previous patch ("powerpc: make fadump resilient with memory
add/remove events") moved the creation of elfcorehdr to the second or
fadump kernel. This eliminates the need to regenerate the elfcorehdr
during memory hotplug or online/offline events.
Create a sysfs entry at /sys/kernel/fadump/hotplug_ready to let
userspace know that fadump re-registration is not required for memory
add/remove events.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240422195932.1583833-3-sourabhjain@linux.ibm.com
|
||
|
Sourabh Jain
|
c6c5b14dac |
powerpc: make fadump resilient with memory add/remove events
Due to changes in memory resources caused by either memory hotplug or online/offline events, the elfcorehdr, which describes the CPUs and memory of the crashed kernel to the kernel that collects the dump (known as second/fadump kernel), becomes outdated. Consequently, attempting dump collection with an outdated elfcorehdr can lead to failed or inaccurate dump collection. Memory hotplug or online/offline events is referred as memory add/remove events in reset of the commit message. The current solution to address the aforementioned issue is as follows: Monitor memory add/remove events in userspace using udev rules, and re-register fadump whenever there are changes in memory resources. This leads to the creation of a new elfcorehdr with updated system memory information. There are several notable issues associated with re-registering fadump for every memory add/remove events. 1. Bulk memory add/remove events with udev-based fadump re-registration can lead to race conditions and, more importantly, it creates a wide window during which fadump is inactive until all memory add/remove events are settled. 2. Re-registering fadump for every memory add/remove event is inefficient. 3. The memory for elfcorehdr is allocated based on the memblock regions available during early boot and remains fixed thereafter. However, if elfcorehdr is later recreated with additional memblock regions, its size will increase, potentially leading to memory corruption. Address the aforementioned challenges by shifting the creation of elfcorehdr from the first kernel (also referred as the crashed kernel), where it was created and frequently recreated for every memory add/remove event, to the fadump kernel. As a result, the elfcorehdr only needs to be created once, thus eliminating the necessity to re-register fadump during memory add/remove events. At present, the first kernel prepares fadump header and stores it in the fadump reserved area. The fadump header includes the start address of the elfcorehdr, crashing CPU details, and other relevant information. In the event of a crash in the first kernel, the second/fadump boots and accesses the fadump header prepared by the first kernel. It then performs the following steps in a platform-specific function [rtas|opal]_fadump_process: 1. Sanity check for fadump header 2. Update CPU notes in elfcorehdr Along with the above, update the setup_fadump()/fadump.c to create elfcorehdr and set its address to the global variable elfcorehdr_addr for the vmcore module to process it in the second/fadump kernel. Section below outlines the information required to create the elfcorehdr and the changes made to make it available to the fadump kernel if it's not already. To create elfcorehdr, the following crashed kernel information is required: CPU notes, vmcoreinfo, and memory ranges. At present, the CPU notes are already prepared in the fadump kernel, so no changes are needed in that regard. The fadump kernel has access to all crashed kernel memory regions, including boot memory regions that are relocated by firmware to fadump reserved areas, so no changes for that either. However, it is necessary to add new members to the fadump header, i.e., the 'fadump_crash_info_header' structure, in order to pass the crashed kernel's vmcoreinfo address and its size to fadump kernel. In addition to the vmcoreinfo address and size, there are a few other attributes also added to the fadump_crash_info_header structure. 1. version: It stores the fadump header version, which is currently set to 1. This provides flexibility to update the fadump crash info header in the future without changing the magic number. For each change in the fadump header, the version will be increased. This will help the updated kernel determine how to handle kernel dumps from older kernels. The magic number remains relevant for checking fadump header corruption. 2. pt_regs_sz/cpu_mask_sz: Store size of pt_regs and cpu_mask structure of first kernel. These attributes are used to prevent dump processing if the sizes of pt_regs or cpu_mask structure differ between the first and fadump kernels. Note: if either first/crashed kernel or second/fadump kernel do not have the changes introduced here then kernel fail to collect the dump and prints relevant error message on the console. Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240422195932.1583833-2-sourabhjain@linux.ibm.com |
||
|
Baoquan He
|
0b52663f75 |
mm/mm_init.c: remove arch_reserved_kernel_pages()
Since the current calculation of calc_nr_kernel_pages() has taken into consideration of kernel reserved memory, no need to have arch_reserved_kernel_pages() any more. Link: https://lkml.kernel.org/r/20240325145646.1044760-7-bhe@redhat.com Signed-off-by: Baoquan He <bhe@redhat.com> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
8a2f118787 |
change alloc_pages name in dma_map_ops to avoid name conflicts
After redefining alloc_pages, all uses of that name are being replaced. Change the conflicting names to prevent preprocessor from replacing them when it's not intended. Link: https://lkml.kernel.org/r/20240321163705.3067592-18-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kent Overstreet
|
0069455bcb |
fix missing vmalloc.h includes
Patch series "Memory allocation profiling", v6.
Overview:
Low overhead [1] per-callsite memory allocation profiling. Not just for
debug kernels, overhead low enough to be deployed in production.
Example output:
root@moria-kvm:~# sort -rn /proc/allocinfo
127664128 31168 mm/page_ext.c:270 func:alloc_page_ext
56373248 4737 mm/slub.c:2259 func:alloc_slab_page
14880768 3633 mm/readahead.c:247 func:page_cache_ra_unbounded
14417920 3520 mm/mm_init.c:2530 func:alloc_large_system_hash
13377536 234 block/blk-mq.c:3421 func:blk_mq_alloc_rqs
11718656 2861 mm/filemap.c:1919 func:__filemap_get_folio
9192960 2800 kernel/fork.c:307 func:alloc_thread_stack_node
4206592 4 net/netfilter/nf_conntrack_core.c:2567 func:nf_ct_alloc_hashtable
4136960 1010 drivers/staging/ctagmod/ctagmod.c:20 [ctagmod] func:ctagmod_start
3940352 962 mm/memory.c:4214 func:alloc_anon_folio
2894464 22613 fs/kernfs/dir.c:615 func:__kernfs_new_node
...
Usage:
kconfig options:
- CONFIG_MEM_ALLOC_PROFILING
- CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT
- CONFIG_MEM_ALLOC_PROFILING_DEBUG
adds warnings for allocations that weren't accounted because of a
missing annotation
sysctl:
/proc/sys/vm/mem_profiling
Runtime info:
/proc/allocinfo
Notes:
[1]: Overhead
To measure the overhead we are comparing the following configurations:
(1) Baseline with CONFIG_MEMCG_KMEM=n
(2) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n)
(3) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y)
(4) Enabled at runtime (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n && /proc/sys/vm/mem_profiling=1)
(5) Baseline with CONFIG_MEMCG_KMEM=y && allocating with __GFP_ACCOUNT
(6) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n) && CONFIG_MEMCG_KMEM=y
(7) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y) && CONFIG_MEMCG_KMEM=y
Performance overhead:
To evaluate performance we implemented an in-kernel test executing
multiple get_free_page/free_page and kmalloc/kfree calls with allocation
sizes growing from 8 to 240 bytes with CPU frequency set to max and CPU
affinity set to a specific CPU to minimize the noise. Below are results
from running the test on Ubuntu 22.04.2 LTS with 6.8.0-rc1 kernel on
56 core Intel Xeon:
kmalloc pgalloc
(1 baseline) 6.764s 16.902s
(2 default disabled) 6.793s (+0.43%) 17.007s (+0.62%)
(3 default enabled) 7.197s (+6.40%) 23.666s (+40.02%)
(4 runtime enabled) 7.405s (+9.48%) 23.901s (+41.41%)
(5 memcg) 13.388s (+97.94%) 48.460s (+186.71%)
(6 def disabled+memcg) 13.332s (+97.10%) 48.105s (+184.61%)
(7 def enabled+memcg) 13.446s (+98.78%) 54.963s (+225.18%)
Memory overhead:
Kernel size:
text data bss dec diff
(1) 26515311 18890222 17018880 62424413
(2) 26524728 19423818 16740352 62688898 264485
(3) 26524724 19423818 16740352 62688894 264481
(4) 26524728 19423818 16740352 62688898 264485
(5) 26541782 18964374 16957440 62463596 39183
Memory consumption on a 56 core Intel CPU with 125GB of memory:
Code tags: 192 kB
PageExts: 262144 kB (256MB)
SlabExts: 9876 kB (9.6MB)
PcpuExts: 512 kB (0.5MB)
Total overhead is 0.2% of total memory.
Benchmarks:
Hackbench tests run 100 times:
hackbench -s 512 -l 200 -g 15 -f 25 -P
baseline disabled profiling enabled profiling
avg 0.3543 0.3559 (+0.0016) 0.3566 (+0.0023)
stdev 0.0137 0.0188 0.0077
hackbench -l 10000
baseline disabled profiling enabled profiling
avg 6.4218 6.4306 (+0.0088) 6.5077 (+0.0859)
stdev 0.0933 0.0286 0.0489
stress-ng tests:
stress-ng --class memory --seq 4 -t 60
stress-ng --class cpu --seq 4 -t 60
Results posted at: https://evilpiepirate.org/~kent/memalloc_prof_v4_stress-ng/
[2] https://lore.kernel.org/all/20240306182440.2003814-1-surenb@google.com/
This patch (of 37):
The next patch drops vmalloc.h from a system header in order to fix a
circular dependency; this adds it to all the files that were pulling it in
implicitly.
[kent.overstreet@linux.dev: fix arch/alpha/lib/memcpy.c]
Link: https://lkml.kernel.org/r/20240327002152.3339937-1-kent.overstreet@linux.dev
[surenb@google.com: fix arch/x86/mm/numa_32.c]
Link: https://lkml.kernel.org/r/20240402180933.1663992-1-surenb@google.com
[kent.overstreet@linux.dev: a few places were depending on sizes.h]
Link: https://lkml.kernel.org/r/20240404034744.1664840-1-kent.overstreet@linux.dev
[arnd@arndb.de: fix mm/kasan/hw_tags.c]
Link: https://lkml.kernel.org/r/20240404124435.3121534-1-arnd@kernel.org
[surenb@google.com: fix arc build]
Link: https://lkml.kernel.org/r/20240405225115.431056-1-surenb@google.com
Link: https://lkml.kernel.org/r/20240321163705.3067592-1-surenb@google.com
Link: https://lkml.kernel.org/r/20240321163705.3067592-2-surenb@google.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Tested-by: Kees Cook <keescook@chromium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Gary Guo <gary@garyguo.net>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Aneesh Kumar K.V (IBM)
|
5a799af952 |
powerpc/mm: Update the memory limit based on direct mapping restrictions
memory limit value specified by the user are further updated such that the value is 16MB aligned. This is because hash translation mode use 16MB as direct mapping page size. Make sure we update the global variable 'memory_limit' with the 16MB aligned value such that all kernel components will see the new aligned value of the memory limit. Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240403083611.172833-3-aneesh.kumar@kernel.org |
||
|
Aneesh Kumar K.V (IBM)
|
f94f5ac079 |
powerpc/fadump: Don't update the user-specified memory limit
If the user specifies the memory limit, the kernel should honor it such that all allocation and reservations are made within the memory limit specified. fadump was breaking that rule. Remove the code which updates the memory limit such that fadump reservations are done within the limit specified. Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240403083611.172833-2-aneesh.kumar@kernel.org |
||
|
Aneesh Kumar K.V (IBM)
|
5ca096161c |
powerpc/mm: Align memory_limit value specified using mem= kernel parameter
The value specified for the memory limit is used to set a restriction on memory usage. It is important to ensure that this restriction is within the linear map kernel address space range. The hash page table translation uses a 16MB page size to map the kernel linear map address space. htab_bolt_mapping() function aligns down the size of the range while mapping kernel linear address space. Since the memblock limit is enforced very early during boot, before we can detect the type of memory translation (radix vs hash), we align the memory limit value specified as a kernel parameter to 16MB. This alignment value will work for both hash and radix translations. Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org> Acked-by: Joel Savitz <jsavitz@redhat.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240403083611.172833-1-aneesh.kumar@kernel.org |
||
|
Alexander Gordeev
|
89d6910cc5 |
sched/vtime: Get rid of generic vtime_task_switch() implementation
The generic vtime_task_switch() implementation gets built only if __ARCH_HAS_VTIME_TASK_SWITCH is not defined, but requires an architecture to implement arch_vtime_task_switch() callback at the same time, which is confusing. Further, arch_vtime_task_switch() is implemented for 32-bit PowerPC architecture only and vtime_task_switch() generic variant is rather superfluous. Simplify the whole vtime_task_switch() wiring by moving the existing generic implementation to PowerPC. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/2cb6e3caada93623f6d4f78ad938ac6cd0e2fda8.1712760275.git.agordeev@linux.ibm.com |
||
|
Mahesh Salgaonkar
|
0db880fc86 |
powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.
nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel crash when invoked during real mode interrupt handling (e.g. early HMI/MCE interrupt handler) if percpu allocation comes from vmalloc area. Early HMI/MCE handlers are called through DEFINE_INTERRUPT_HANDLER_NMI() wrapper which invokes nmi_enter/nmi_exit calls. We don't see any issue when percpu allocation is from the embedded first chunk. However with CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK enabled there are chances where percpu allocation can come from the vmalloc area. With kernel command line "percpu_alloc=page" we can force percpu allocation to come from vmalloc area and can see kernel crash in machine_check_early: [ 1.215714] NIP [c000000000e49eb4] rcu_nmi_enter+0x24/0x110 [ 1.215717] LR [c0000000000461a0] machine_check_early+0xf0/0x2c0 [ 1.215719] --- interrupt: 200 [ 1.215720] [c000000fffd73180] [0000000000000000] 0x0 (unreliable) [ 1.215722] [c000000fffd731b0] [0000000000000000] 0x0 [ 1.215724] [c000000fffd73210] [c000000000008364] machine_check_early_common+0x134/0x1f8 Fix this by avoiding use of nmi_enter()/nmi_exit() in real mode if percpu first chunk is not embedded. Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Tested-by: Shirisha Ganta <shirisha@linux.ibm.com> Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240410043006.81577-1-mahesh@linux.ibm.com |
||
|
Thorsten Blum
|
3e42e72796 |
powerpc: Use str_plural() in cpu_init_thread_core_maps()
Fixes the following Coccinelle/coccicheck warning reported by string_choices.cocci: opportunity for str_plural(tpc) Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240331222249.107467-2-thorsten.blum@toblux.com |
||
|
Shivaprasad G Bhat
|
5bd31ab5f7 |
powerpc/iommu: Refactor spapr_tce_platform_iommu_attach_dev()
The patch makes the iommu_group_get() call only when using it thereby avoiding the unnecessary get & put for domain already being set case. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/170800513841.2411.13524607664262048895.stgit@linux.ibm.com |
||
|
Hari Bathini
|
5c4233cc09 |
powerpc/kdump: Split KEXEC_CORE and CRASH_DUMP dependency
Remove CONFIG_CRASH_DUMP dependency on CONFIG_KEXEC. CONFIG_KEXEC_CORE was used at places where CONFIG_CRASH_DUMP or CONFIG_CRASH_RESERVE was appropriate. Replace with appropriate #ifdefs to support CONFIG_KEXEC and !CONFIG_CRASH_DUMP configuration option. Also, make CONFIG_FA_DUMP dependent on CONFIG_CRASH_DUMP to avoid unmet dependencies for FA_DUMP with !CONFIG_KEXEC_CORE configuration option. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240226103010.589537-4-hbathini@linux.ibm.com |
||
|
Linus Torvalds
|
66a27abac3 |
powerpc updates for 6.9
- Add AT_HWCAP3 and AT_HWCAP4 aux vector entries for future use by glibc. - Add support for recognising the Power11 architected and raw PVRs. - Add support for nr_cpus=n on the command line where the boot CPU is >= n. - Add ppcxx_allmodconfig targets for all 32-bit sub-arches. - Other small features, cleanups and fixes. Thanks to: Akanksha J N, Brian King, Christophe Leroy, Dawei Li, Geoff Levand, Greg Kroah-Hartman, Jan-Benedict Glaw, Kajol Jain, Kunwu Chan, Li zeming, Madhavan Srinivasan, Masahiro Yamada, Nathan Chancellor, Nicholas Piggin, Peter Bergner, Qiheng Lin, Randy Dunlap, Ricardo B. Marliere, Rob Herring, Sathvika Vasireddy, Shrikanth Hegde, Uwe Kleine-König, Vaibhav Jain, Wen Xiong. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmX01vgTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgJ4bEACVsxXXjbjl+WKgWNjHsM7sVwUX/sSV z43iVycLPXDqochSkkgKjyIEFowaWhjgWVHFHmUXWxB5FjjFEEoH4FPo3VB0IY48 VoSFT6PhzqXDrGmt2fWsJ+k6zUyJZa8pNS38DHg1yuuYDAa0KWxd3E/x/r0qzsbr vcas1uWcDWgjoUDMBuJpyx0sYTl6+mR9HlZuM4+aNQdzhTFU/jK69hAN0RFvryes K2/fLgI0fgLZpQDogCn4HV1/4uixi1eEFlVNXkwvMYDpQVo2FqiBaWLF0hNLWNCk kvm/fYIJhdFoNlp38jVKv0KJnBhW7aAs3prF+8B3YL2B23rLnvA6ZLZKHcdBAeLb 8PJMRrbAbmVxOnVSAG0fgU+0dEdkJQ+0ABqa+usMOV7xIPg9uIui1YrKT1KVq6Fs KyGHM5EQuBC/P6bTsKO6X+1beY2QIfwWxaIkoo8pj6d0WU69qU4u+LzQiDO4XR0L UQQguB1Qo8yaip3rHXhuv0hlnMNVAVye56Zw63uq1MWGkewRKSkY91Ms02L+pXpF r6+96xoFB0ulKZFnyxyBdkj2iC0426fHtTiiJFfQ4R1fiibPKtAx9P59WYnqymVh QsSYqlgC2/jWzRgqJTweLp/XQK8fWqmFkNmCGDN1N9Sij9Xjx/8aZb5dvwJkSBnK rZ4ObxBoaCPbPA== =K9Ok -----END PGP SIGNATURE----- Merge tag 'powerpc-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add AT_HWCAP3 and AT_HWCAP4 aux vector entries for future use by glibc - Add support for recognising the Power11 architected and raw PVRs - Add support for nr_cpus=n on the command line where the boot CPU is >= n - Add ppcxx_allmodconfig targets for all 32-bit sub-arches - Other small features, cleanups and fixes Thanks to Akanksha J N, Brian King, Christophe Leroy, Dawei Li, Geoff Levand, Greg Kroah-Hartman, Jan-Benedict Glaw, Kajol Jain, Kunwu Chan, Li zeming, Madhavan Srinivasan, Masahiro Yamada, Nathan Chancellor, Nicholas Piggin, Peter Bergner, Qiheng Lin, Randy Dunlap, Ricardo B. Marliere, Rob Herring, Sathvika Vasireddy, Shrikanth Hegde, Uwe Kleine-König, Vaibhav Jain, and Wen Xiong. * tag 'powerpc-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (71 commits) powerpc/macio: Make remove callback of macio driver void returned powerpc/83xx: Fix build failure with FPU=n powerpc/64s: Fix get_hugepd_cache_index() build failure powerpc/4xx: Fix warp_gpio_leds build failure powerpc/amigaone: Make several functions static powerpc/embedded6xx: Fix no previous prototype for avr_uart_send() etc. macintosh/adb: make adb_dev_class constant powerpc: xor_vmx: Add '-mhard-float' to CFLAGS powerpc/fsl: Fix mfpmr() asm constraint error powerpc: Remove cpu-as-y completely powerpc/fsl: Modernise mt/mfpmr powerpc/fsl: Fix mfpmr build errors with newer binutils powerpc/64s: Use .machine power4 around dcbt powerpc/64s: Move dcbt/dcbtst sequence into a macro powerpc/mm: Code cleanup for __hash_page_thp powerpc/hv-gpci: Fix the H_GET_PERF_COUNTER_INFO hcall return value checks powerpc/irq: Allow softirq to hardirq stack transition powerpc: Stop using of_root powerpc/machdep: Define 'compatibles' property in ppc_md and use it of: Reimplement of_machine_is_compatible() using of_machine_compatible_match() ... |
||
|
Linus Torvalds
|
902861e34c |
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series "mm:
zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is hotplugged
as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving policy
wherein we allocate memory across nodes in a weighted fashion rather
than uniformly. This is beneficial in heterogeneous memory environments
appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the process
has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown situations.
The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings" Ryan
Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's series
"Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page faults.
He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction test",
Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in
our handling of DAX on archiecctures which have virtually aliasing data
caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic
improvements in worst-case mmap_lock hold times during certain
userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability improvements
in his series "Mitigate a vmap lock contention". It realizes a 12x
improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging of
large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages() to
an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which are
configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZfJpPQAKCRDdBJ7gKXxA
joxeAP9TrcMEuHnLmBlhIXkWbIR4+ki+pA3v+gNTlJiBhnfVSgD9G55t1aBaRplx
TMNhHfyiHYDTx/GAV9NXW84tasJSDgA=
=TG55
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series
"mm: zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is
hotplugged as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving
policy wherein we allocate memory across nodes in a weighted fashion
rather than uniformly. This is beneficial in heterogeneous memory
environments appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the
process has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown
situations. The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings"
Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's
series "Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page
faults. He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction
test", Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and
refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess
in our handling of DAX on archiecctures which have virtually aliasing
data caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides
dramatic improvements in worst-case mmap_lock hold times during
certain userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability
improvements in his series "Mitigate a vmap lock contention". It
realizes a 12x improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging
of large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages()
to an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which
are configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
* tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits)
mm/zswap: remove the memcpy if acomp is not sleepable
crypto: introduce: acomp_is_async to expose if comp drivers might sleep
memtest: use {READ,WRITE}_ONCE in memory scanning
mm: prohibit the last subpage from reusing the entire large folio
mm: recover pud_leaf() definitions in nopmd case
selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
selftests/mm: skip uffd hugetlb tests with insufficient hugepages
selftests/mm: dont fail testsuite due to a lack of hugepages
mm/huge_memory: skip invalid debugfs new_order input for folio split
mm/huge_memory: check new folio order when split a folio
mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure
mm: add an explicit smp_wmb() to UFFDIO_CONTINUE
mm: fix list corruption in put_pages_list
mm: remove folio from deferred split list before uncharging it
filemap: avoid unnecessary major faults in filemap_fault()
mm,page_owner: drop unnecessary check
mm,page_owner: check for null stack_record before bumping its refcount
mm: swap: fix race between free_swap_and_cache() and swapoff()
mm/treewide: align up pXd_leaf() retval across archs
mm/treewide: drop pXd_large()
...
|
||
|
Linus Torvalds
|
9187210eee |
Networking changes for 6.9.
Core & protocols
----------------
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps etc.)
lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core
instead of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length
and budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global config
variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug
of ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for
use on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code
--------------------------------------------
- Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce
VM_SPARSE kind and vm_area_[un]map_pages (used by bpf_arena).
- Rework selftest harness to enable the use of the full range of
ksft exit code (pass, fail, skip, xfail, xpass).
Netfilter
---------
- Allow userspace to define a table that is exclusively owned by a daemon
(via netlink socket aliveness) without auto-removing this table when
the userspace program exits. Such table gets marked as orphaned and
a restarting management daemon can re-attach/regain ownership.
- Speed up element insertions to nftables' concatenated-ranges set type.
Compact a few related data structures.
BPF
---
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between BPF
program and user space where structures inside the arena can have
pointers to other areas of the arena, and pointers work seamlessly
for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the verifier
and the program. The verifier allows the program to loop assuming it's
behaving well, but reserves the right to terminate it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF objects.
Wireless
--------
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API
----------
- Major overhaul of the Energy Efficient Ethernet internals to support
new link modes (2.5GE, 5GE), share more code between drivers
(especially those using phylib), and encourage more uniform behavior.
Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc
----
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions,
and packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message encapsulation
or "Netlink polymorphism", where interpretation of nested attributes
depends on link type, classifier type or some other "class type".
Drivers
-------
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic
on CAN BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO) support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs to
have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmXv0mgACgkQMUZtbf5S
IrtgMxAAuRd+WJW++SENr4KxIWhYO1q6Xcxnai43wrNkan9swD24icG8TYALt4f3
yoT6idQvWReAb5JNlh9rUQz8R7E0nJXlvEFn5MtJwcthx2C6wFo/XkJlddlRrT+j
c2xGILwLjRhW65LaC0MZ2ECbEERkFz8xcGfK2SWzUgh6KYvPjcRfKFxugpM7xOQK
P/Wnqhs4fVRS/Mj/bCcXcO+yhwC121Q3qVeQVjGS0AzEC65hAW87a/kc2BfgcegD
EyI9R7mf6criQwX+0awubjfoIdr4oW/8oDVNvUDczkJkbaEVaLMQk9P5x/0XnnVS
UHUchWXyI80Q8Rj12uN1/I0h3WtwNQnCRBuLSmtm6GLfCAwbLvp2nGWDnaXiqryW
DVKUIHGvqPKjkOOMOVfSvfB3LvkS3xsFVVYiQBQCn0YSs/gtu4CoF2Nty9CiLPbK
tTuxUnLdPDZDxU//l0VArZmP8p2JM7XQGJ+JH8GFH4SBTyBR23e0iyPSoyaxjnYn
RReDnHMVsrS1i7GPhbqDJWn+uqMSs7N149i0XmmyeqwQHUVSJN3J2BApP2nCaDfy
H2lTuYly5FfEezt61NvCE4qr/VsWeEjm1fYlFQ9dFn4pGn+HghyCpw+xD1ZN56DN
lujemau5B3kk1UTtAT4ypPqvuqjkRFqpNV2LzsJSk/Js+hApw8Y=
=oY52
-----END PGP SIGNATURE-----
Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps
etc) lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core instead
of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length and
budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global
config variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug of
ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for use
on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code:
- Enforce VM_IOREMAP flag and range in ioremap_page_range and
introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
bpf_arena).
- Rework selftest harness to enable the use of the full range of ksft
exit code (pass, fail, skip, xfail, xpass).
Netfilter:
- Allow userspace to define a table that is exclusively owned by a
daemon (via netlink socket aliveness) without auto-removing this
table when the userspace program exits. Such table gets marked as
orphaned and a restarting management daemon can re-attach/regain
ownership.
- Speed up element insertions to nftables' concatenated-ranges set
type. Compact a few related data structures.
BPF:
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between
BPF program and user space where structures inside the arena can
have pointers to other areas of the arena, and pointers work
seamlessly for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the
verifier and the program. The verifier allows the program to loop
assuming it's behaving well, but reserves the right to terminate
it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops
type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF
firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF
objects.
Wireless:
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API:
- Major overhaul of the Energy Efficient Ethernet internals to
support new link modes (2.5GE, 5GE), share more code between
drivers (especially those using phylib), and encourage more
uniform behavior. Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from
drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc:
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions, and
packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message
encapsulation or "Netlink polymorphism", where interpretation of
nested attributes depends on link type, classifier type or some
other "class type".
Drivers:
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic on CAN
BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO)
support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs
to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro"
* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
nexthop: Fix out-of-bounds access during attribute validation
nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
nexthop: Only parse NHA_OP_FLAGS for get messages that require it
bpf: move sleepable flag from bpf_prog_aux to bpf_prog
bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
selftests/bpf: Add kprobe multi triggering benchmarks
ptp: Move from simple ida to xarray
vxlan: Remove generic .ndo_get_stats64
vxlan: Do not alloc tstats manually
devlink: Add comments to use netlink gen tool
nfp: flower: handle acti_netdevs allocation failure
net/packet: Add getsockopt support for PACKET_COPY_THRESH
net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
selftests/bpf: Add bpf_arena_htab test.
selftests/bpf: Add bpf_arena_list test.
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
bpf: Add helper macro bpf_addr_space_cast()
libbpf: Recognize __arena global variables.
bpftool: Recognize arena map type
...
|
||
|
Linus Torvalds
|
89c572e2f3 |
Scheduler changes for v6.9:
- Fix inconsistency in misfit task load-balancing - Fix CPU isolation bugs in the task-wakeup logic - Rework & unify the sched_use_asym_prio() and sched_asym_prefer() logic - Clean up & simplify ->avg_* accesses - Misc cleanups & fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmXu9V0RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gqWBAAvqPlJx/jwNTePiXtxsObmtTnTStnVSM8 8SRxb2uznSFjYj73RdMDUzeYOfweE48elJoUAN7IGX2fgCFjxeDgpPnAyvnU0jFE X/gJXEO2xCCYsvDnMg1huNSxEJ1ZQl6YJgdd6eLGjBK6l75pkgLJLOSmeFfTShgw gMk4yIaUrxd/yc/bBvK39gMW1JDXiFIwmHuzfEl0/5k+abzVOU0ZfqFir2OH/GT9 YH8ZNsKKn88i01mp2qzo9LouF7mmOH4dZYd9k0SueH+rW8Z+goSuVF8O3igodL0T TM5sqqG7qd1WC8SN0zng+OGODmJ+PrN7soKbTZC5NsC+LvipjVZ1Y92dLyS1xhgn Bpm+NjVNrz9ZWhZiC5LiIF+zDZHu51RDejcOgt1Va6qBIY229GFKLgxFSis/TzzD 7xFpi7ApGCS/Rp9VeIDC69V8ZVfsCPJ7D1oxo5wmLzGe17nThxMeE1AmoWOXOUp8 M9ISbvete8i/8uS8jJQQMylrFceQkzumTVK7p+LqEdlaH0fF/fNKyeH81ZLZMwpM 0pfc7OVFpxd3Rt4wq+db00ilStdfV4yKkVAJiOLfVPyh+tZusvxkKjqXIMrm3RI/ DkZu6/3KYompfVcfkVXbW57Zu+kfgi6kQVt+6yEGrnLcIPkaPR08inEB7vtf6T+R EBncKVtt1Rs= =3CZV -----END PGP SIGNATURE----- Merge tag 'sched-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: - Fix inconsistency in misfit task load-balancing - Fix CPU isolation bugs in the task-wakeup logic - Rework and unify the sched_use_asym_prio() and sched_asym_prefer() logic - Clean up and simplify ->avg_* accesses - Misc cleanups and fixes * tag 'sched-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/topology: Rename SD_SHARE_PKG_RESOURCES to SD_SHARE_LLC sched/fair: Check the SD_ASYM_PACKING flag in sched_use_asym_prio() sched/fair: Rework sched_use_asym_prio() and sched_asym_prefer() sched/fair: Remove unused parameter from sched_asym() sched/topology: Remove duplicate descriptions from TOPOLOGY_SD_FLAGS sched/fair: Simplify the update_sd_pick_busiest() logic sched/fair: Do strict inequality check for busiest misfit task group sched/fair: Remove unnecessary goto in update_sd_lb_stats() sched/fair: Take the scheduling domain into account in select_idle_core() sched/fair: Take the scheduling domain into account in select_idle_smt() sched/fair: Add READ_ONCE() and use existing helper function to access ->avg_irq sched/fair: Use existing helper functions to access ->avg_rt and ->avg_dl sched/core: Simplify code by removing duplicate #ifdefs |
||
|
Jakub Kicinski
|
5f20e6ab1f |
for-netdev
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmXvm7IACgkQ6rmadz2v bTqdMA//VMHNHVLb4oROoXyQD9fw2mCmIUEKzP88RXfqcxsfEX7HF+k8B5ZTk0ro CHXTAnc79+Qqg0j24bkQKxup/fKBQVw9D+Ia4b3ytlm1I2MtyU/16xNEzVhAPU2D iKk6mVBsEdCbt/GjpWORy/VVnZlZpC7BOpZLxsbbxgXOndnCegyjXzSnLGJGxdvi zkrQTn2SrFzLi6aNpVLqrv6Nks6HJusfCKsIrtlbkQ85dulasHOtwK9s6GF60nte aaho+MPx3L+lWEgapsm8rR779pHaYIB/GbZUgEPxE/xUJ/V8BzDgFNLMzEiIBRMN a0zZam11BkBzCfcO9gkvDRByaei/dZz2jdqfU4GlHklFj1WFfz8Q7fRLEPINksvj WXLgJADGY5mtGbjG21FScThxzj+Ruqwx0a13ddlyI/W+P3y5yzSWsLwJG5F9p0oU 6nlkJ4U8yg+9E1ie5ae0TibqvRJzXPjfOERZGwYDSVvfQGzv1z+DGSOPMmgNcWYM dIaO+A/+NS3zdbk8+1PP2SBbhHPk6kWyCUByWc7wMzCPTiwriFGY/DD2sN+Fsufo zorzfikUQOlTfzzD5jbmT49U8hUQUf6QIWsu7BijSiHaaC7am4S8QB2O6ibJMqdv yNiwvuX+ThgVIY3QKrLLqL0KPGeKMR5mtfq6rrwSpfp/b4g27FE= =eFgA -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Alexei Starovoitov says: ==================== pull-request: bpf-next 2024-03-11 We've added 59 non-merge commits during the last 9 day(s) which contain a total of 88 files changed, 4181 insertions(+), 590 deletions(-). The main changes are: 1) Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce VM_SPARSE kind and vm_area_[un]map_pages to be used in bpf_arena, from Alexei. 2) Introduce bpf_arena which is sparse shared memory region between bpf program and user space where structures inside the arena can have pointers to other areas of the arena, and pointers work seamlessly for both user-space programs and bpf programs, from Alexei and Andrii. 3) Introduce may_goto instruction that is a contract between the verifier and the program. The verifier allows the program to loop assuming it's behaving well, but reserves the right to terminate it, from Alexei. 4) Use IETF format for field definitions in the BPF standard document, from Dave. 5) Extend struct_ops libbpf APIs to allow specify version suffixes for stuct_ops map types, share the same BPF program between several map definitions, and other improvements, from Eduard. 6) Enable struct_ops support for more than one page in trampolines, from Kui-Feng. 7) Support kCFI + BPF on riscv64, from Puranjay. 8) Use bpf_prog_pack for arm64 bpf trampoline, from Puranjay. 9) Fix roundup_pow_of_two undefined behavior on 32-bit archs, from Toke. ==================== Link: https://lore.kernel.org/r/20240312003646.8692-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Alexei Starovoitov
|
d7bca9199a |
mm: Introduce vmap_page_range() to map pages in PCI address space
ioremap_page_range() should be used for ranges within vmalloc range only.
The vmalloc ranges are allocated by get_vm_area(). PCI has "resource"
allocator that manages PCI_IOBASE, IO_SPACE_LIMIT address range, hence
introduce vmap_page_range() to be used exclusively to map pages
in PCI address space.
Fixes:
|
||
|
Linus Torvalds
|
e4f7900095 |
powerpc fixes for 6.8 #5
- Fix IOMMU table initialisation when doing kdump over SR-IOV. - Fix incorrect RTAS function name for resetting TCE tables. - Fix fpu_signal selftest failures since a recent change. Thanks to: Gaurav Batra, Nathan Lynch. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmXkauwTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgLTSD/4/boNe5MtrGgk6RtxnyWJv/p9KCMcC rRTa5pSR6HFVK3m89V17O0onL8aKyIljO5P3rDS8X4SUhr41Z9b9/FUoHv277E7a f7hgX4/901DYiMLJEt9jkfmM30IxTYkPmlft0Uus/NiesNdTcdQOO4UScSysnZac 0HM1POp32KSC2HQRc/i+WIshRnaZcC+f0PPTU/qfS/u7/pwK4eekWdayLNvvvSvH TfjV5Hu4JVDF7hBLsoY4PdqVQGVD3t3d1D5+UrhHuYzPx+Afc8rIDfJx/+o339W6 ZTXrRPOfiticfhHQvMX1AgsYr3/A0BbZj/wCvv+pPsCjZPfox9XsW6CgiMKUxVDf ifrBhvNx0fICMf+cEjH9q2dcGwMba7dZTX5HBlSXR4xLeNitUI8pt6bYCaqw7UjH ohwl9aAI7Rl1hcW6qBaviKaIDqhbmj3N4B4ZdgMAKj2gnovbF9gUSG3ARLwEjsqB qfd0c3x6UUThj4vYfGC/iI1z1LCXC8myqof6EGArLTc13R9vFv+ycx5FwERvAxtY ALNBh6LMIkKI5z8ZrGWULoXHoS2QrE1SXpQ5ooH2g9n+vLibd37JdJNcrEMf/TJZ PluhRCJcEWkw98aUSzIoRFIFpZ2wMg/uzg3KZePhRus3GhgttTqFTbrcKHhyONBO pq/EDB8FizZ9/A== =MSDF -----END PGP SIGNATURE----- Merge tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix IOMMU table initialisation when doing kdump over SR-IOV - Fix incorrect RTAS function name for resetting TCE tables - Fix fpu_signal selftest failures since a recent change Thanks to Gaurav Batra and Nathan Lynch. * tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix fpu_signal failures powerpc/rtas: use correct function name for resetting TCE tables powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV |
||
|
Michael Ellerman
|
4eb20bf34e |
powerpc/irq: Allow softirq to hardirq stack transition
Allow a transition from the softirq stack to the hardirq stack when handling a hardirq. Doing so means a hardirq received while deep in softirq processing is less likely to cause a stack overflow of the softirq stack. Previously it wasn't safe to do so because irq_exit() (which initiates softirq processing) was called on the hardirq stack. That was changed in commit |
||
|
Christophe Leroy
|
2a066ae118 |
powerpc: Stop using of_root
Replace all usages of of_root by of_find_node_by_path("/")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231214103152.12269-5-mpe@ellerman.id.au
|
||
|
Christophe Leroy
|
28da734d58 |
powerpc/machdep: Define 'compatibles' property in ppc_md and use it
Most probe functions that do not use the 'compatible' string do nothing else than checking whether the machine is compatible with one of the strings in a NULL terminated table of strings. Define that table of strings in ppc_md structure and check it directly from probe_machine() instead of using ppc_md.probe() for that. Keep checking in ppc_md.probe() only for more complex probing. All .compatible could be replaced with a single element NULL terminated list but that's not worth the churn. Can be do incrementaly in follow-up patches. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214103152.12269-4-mpe@ellerman.id.au |
||
|
Alex Shi
|
54de442747 |
sched/topology: Rename SD_SHARE_PKG_RESOURCES to SD_SHARE_LLC
SD_SHARE_PKG_RESOURCES is a bit of a misnomer: its naming suggests that it's sharing all 'package resources' - while in reality it's specifically for sharing the LLC only. Rename it to SD_SHARE_LLC to reduce confusion. [ mingo: Rewrote the confusing changelog as well. ] Suggested-by: Valentin Schneider <vschneid@redhat.com> Signed-off-by: Alex Shi <alexs@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Reviewed-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Reviewed-by: Barry Song <baohua@kernel.org> Link: https://lore.kernel.org/r/20240210113924.1130448-5-alexs@kernel.org |
||
|
Linus Torvalds
|
ab0a97cffa |
powerpc fixes for 6.8 #4
- Fix a crash when hot adding a PCI device to an LPAR since recent changes. - Fix nested KVM level-2 guest reboot failure due to empty 'arch_compat'. Thanks to: Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav Batra, Vaibhav Jain. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmXaf8kTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgJUyEACK+gmbPJxVwRnt60e7l8SJrjaXE9ZH llI2ffSM63KOL0qeJlWj8EfNcmU3ihCnMpVS4VHAIvEvCq8KBdcHh7EfLmIjMSl2 oHfcb+dpdnWpQUkI2jci6ptxv8Al7hmd5kP6X5TGn0XJaXWatW4tj7QDP574DCZY UfbHGvGnCVmlcxm3xhn7JzJT4Lgj9ehxgZEMHB68qfwU2rJgUXNITBzOsGwfq4c0 wiIdzVGMuJQdaFLt0JLNP2KY8kpVsAeKRYgSsLrkDkp+tKOIPvgeBmC221pOb1Y4 iZbpXR3h06WfFBnA2PJpdfuacN55/gF0U5BnyOj5tB7CTx65oTyX/BJLIocKWAlF hRRPVEYqBH0mZCHXn03+J/A2/iut1XxDlVMpEhjjZjb57CTYCApSpHer6shPw6PV QqG+iAr7lBCZ70qS2m2+mjPhgDf5TNlxlsip7S3xJJpJvScN/JyPDupDF7tQYuHD GjIOm8gSHL0i3F4L3NAZ9FtPRwxXcv85sWCTbE7jsfVOT/kkDGTwhx/vdPIR0la8 agDv/Q0FyyFHWd5IS4oqXFop6P3boulHexdIec/MIhBrPSZ6oG0ySzj3rqdI7VYh 7BYj/cHerKONR/BU6S3vKddh9RDD9Fe5ghEAgng2DxG+Za/m/M2v/76123/ZeZuw qQ8aiIvYOJ4DGA== =+tcX -----END PGP SIGNATURE----- Merge tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix a crash when hot adding a PCI device to an LPAR since recent changes - Fix nested KVM level-2 guest reboot failure due to empty 'arch_compat' Thanks to Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav Batra, and Vaibhav Jain. * tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: KVM: PPC: Book3S HV: Fix L2 guest reboot failure due to empty 'arch_compat' powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller |
||
|
Baoquan He
|
443cbaf9e2 |
crash: split vmcoreinfo exporting code out from crash_core.c
Now move the relevant codes into separate files:
kernel/crash_reserve.c, include/linux/crash_reserve.h.
And add config item CRASH_RESERVE to control its enabling.
And also update the old ifdeffery of CONFIG_CRASH_CORE, including of
<linux/crash_core.h> and config item dependency on CRASH_CORE
accordingly.
And also do renaming as follows:
- arch/xxx/kernel/{crash_core.c => vmcore_info.c}
because they are only related to vmcoreinfo exporting on x86, arm64,
riscv.
And also Remove config item CRASH_CORE, and rely on CONFIG_KEXEC_CORE to
decide if build in crash_core.c.
[yang.lee@linux.alibaba.com: remove duplicated include in vmcore_info.c]
Link: https://lkml.kernel.org/r/20240126005744.16561-1-yang.lee@linux.alibaba.com
Link: https://lkml.kernel.org/r/20240124051254.67105-3-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Pingfan Liu <piliu@redhat.com>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Michael Kelley <mhklinux@outlook.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Nathan Lynch
|
fad87dbd48 |
powerpc/rtas: use correct function name for resetting TCE tables
The PAPR spec spells the function name as
"ibm,reset-pe-dma-windows"
but in practice firmware uses the singular form:
"ibm,reset-pe-dma-window"
in the device tree. Since we have the wrong spelling in the RTAS
function table, reverse lookups (token -> name) fail and warn:
unexpected failed lookup for token 86
WARNING: CPU: 1 PID: 545 at arch/powerpc/kernel/rtas.c:659 __do_enter_rtas_trace+0x2a4/0x2b4
CPU: 1 PID: 545 Comm: systemd-udevd Not tainted 6.8.0-rc4 #30
Hardware name: IBM,9105-22A POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NL1060_028) hv:phyp pSeries
NIP [c0000000000417f0] __do_enter_rtas_trace+0x2a4/0x2b4
LR [c0000000000417ec] __do_enter_rtas_trace+0x2a0/0x2b4
Call Trace:
__do_enter_rtas_trace+0x2a0/0x2b4 (unreliable)
rtas_call+0x1f8/0x3e0
enable_ddw.constprop.0+0x4d0/0xc84
dma_iommu_dma_supported+0xe8/0x24c
dma_set_mask+0x5c/0xd8
mlx5_pci_init.constprop.0+0xf0/0x46c [mlx5_core]
probe_one+0xfc/0x32c [mlx5_core]
local_pci_probe+0x68/0x12c
pci_call_probe+0x68/0x1ec
pci_device_probe+0xbc/0x1a8
really_probe+0x104/0x570
__driver_probe_device+0xb8/0x224
driver_probe_device+0x54/0x130
__driver_attach+0x158/0x2b0
bus_for_each_dev+0xa8/0x120
driver_attach+0x34/0x48
bus_add_driver+0x174/0x304
driver_register+0x8c/0x1c4
__pci_register_driver+0x68/0x7c
mlx5_init+0xb8/0x118 [mlx5_core]
do_one_initcall+0x60/0x388
do_init_module+0x7c/0x2a4
init_module_from_file+0xb4/0x108
idempotent_init_module+0x184/0x34c
sys_finit_module+0x90/0x114
And oopses are possible when lockdep is enabled or the RTAS
tracepoints are active, since those paths dereference the result of
the lookup.
Use the correct spelling to match firmware's behavior, adjusting the
related constants to match.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes:
|
||
|
Christophe Leroy
|
f7f18e30b4 |
powerpc/kprobes: Handle error returned by set_memory_rox()
set_memory_rox() can fail. In case it fails, free allocated memory and return NULL. Link: https://github.com/KSPP/linux/issues/7 Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/b4907cf4339bd086abc40430d91311436cb0c18e.1708078401.git.christophe.leroy@csgroup.eu |
||
|
Christophe Leroy
|
d5835fb60b |
powerpc: Use user_mode() macro when possible
There is a nice macro to check user mode. Use it instead of open coding anding with MSR_PR to increase readability and avoid having to comment what that anding is for. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/fbf74887dcf1f1ba9e1680fc3247cbb581b00662.1708078228.git.christophe.leroy@csgroup.eu |
||
|
Nicholas Piggin
|
6e9de2054e |
powerpc/pseries: Set CPU_FTR_DBELL according to ibm,pi-features
PAPR will define a new ibm,pi-features bit which says that doorbells should not be used even on architectures where they exist. This could be because they are emulated and slower than using the interrupt controller directly for IPIs. Wire this bit into the pi-features parser to clear CPU_FTR_DBELL, and ensure CPU_FTR_DBELL is not in CPU_FTRS_ALWAYS. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240207035220.339726-2-npiggin@gmail.com |
||
|
Nicholas Piggin
|
8b33806106 |
powerpc/pseries: Add a clear modifier to ibm,pa/pi-features parser
When a new ibm,pa/pi-features bit is introduced that is intended to
apply to existing systems and features, it may have an "inverted"
meaning (i.e., bit clear => feature available; bit set => unavailable).
Depending on the nature of the feature, this may give the best
backward compatibility result where old firmware will continue to
have that bit clear and therefore the feature available.
The 'invert' modifier presumably was introduced for this type of
feature bit. However it invert will set the feature if the bit is
clear, which prevents it being used in the situation where an old
CPU lacks a feature that a new CPU has, then a new firmware comes
out to disable that feature on the new CPU if the bit is set.
Adding an 'invert' entry for that feature would incorrectly enable
it for the old CPU.
So add a 'clear' modifier that clears the feature if the bit is set,
but it does not set the feature if the bit is clear. The feature
is expected to be set in the cpu table.
This replaces the 'invert' modifier, which is unused since commit
|
||
|
Madhavan Srinivasan
|
c2ed087ed3 |
powerpc: Add Power11 architected and raw mode
Add CPU table entries for raw and architected mode. Most fields are copied from the Power10 table entries. CPU, MMU and user (ELF_HWCAP) features are unchanged vs P10. However userspace can detect P11 because the AT_PLATFORM value changes to "power11". The logical PVR value of 0x0F000007, passed to firmware via the ibm_arch_vec, indicates the kernel can support a P11 compatible CPU, which means at least ISA v3.1 compliant. Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240221044623.1598642-1-mpe@ellerman.id.au |
||
|
Shrikanth Hegde
|
8c328de8fd |
powerpc: Remove duplicate/unnecessary ifdefs
When an ifdef is used in the below manner, second one could be considered as duplicate. ifdef DEFINE_A ...code block... ifdef DEFINE_A <-- This is a duplicate. ...code block... endif else ifndef DEFINE_A <-- This is also duplicate. ...code block... endif endif More details about the script and methods used to find these code patterns are in cover letter of [1]. Few places in arch/powerpc where this pattern was seen: paca.h: Hunk1: Code is under check of CONFIG_PPC64 from line 13, hence the second CONFIG_PPC64 at line 166 is a duplicate. Hunk2: CONFIG_PPC_BOOK3S_64 was defined back to back. Merged the two ifdefs. asm-offsets.c: Code is under check of CONFIG_PPC64 from line 176 hence second CONFIG_PPC64 at line 249 is a duplicate. powermac/feature.c: #ifndef CONFIG_PPC64 is used at line 2066. And then in #else again #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else means CONFIG_PPC64 is defined. xmon.c: Code is under the check of CONFIG_SMP from line 521 hence the same check of CONFIG_SMP at line 646 is a duplicate. No functional change is intended here. It only aims to improve code readability. [1] https://lore.kernel.org/all/20240118080326.13137-1-sshegde@linux.ibm.com/ Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240216053016.528906-1-sshegde@linux.ibm.com |
||
|
Masahiro Yamada
|
97a5253d7c |
powerpc: remove unused KCSAN_SANITIZE_early_64.o in Makefile
Commit
|
||
|
Gaurav Batra
|
a5c57fd2e9 |
powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller
When a PCI device is dynamically added, the kernel oopses with a NULL pointer dereference: BUG: Kernel NULL pointer dereference on read at 0x00000030 Faulting instruction address: 0xc0000000006bbe5c Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries Modules linked in: rpadlpar_io rpaphp rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs xsk_diag bonding nft_compat nf_tables nfnetlink rfkill binfmt_misc dm_multipath rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_umad ib_iser libiscsi scsi_transport_iscsi ib_ipoib rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c mlx5_core mlxfw sd_mod t10_pi sg tls ibmvscsi ibmveth scsi_transport_srp vmx_crypto pseries_wdt psample dm_mirror dm_region_hash dm_log dm_mod fuse CPU: 17 PID: 2685 Comm: drmgr Not tainted 6.7.0-203405+ #66 Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries NIP: c0000000006bbe5c LR: c000000000a13e68 CTR: c0000000000579f8 REGS: c00000009924f240 TRAP: 0300 Not tainted (6.7.0-203405+) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24002220 XER: 20040006 CFAR: c000000000a13e64 DAR: 0000000000000030 DSISR: 40000000 IRQMASK: 0 ... NIP sysfs_add_link_to_group+0x34/0x94 LR iommu_device_link+0x5c/0x118 Call Trace: iommu_init_device+0x26c/0x318 (unreliable) iommu_device_link+0x5c/0x118 iommu_init_device+0xa8/0x318 iommu_probe_device+0xc0/0x134 iommu_bus_notifier+0x44/0x104 notifier_call_chain+0xb8/0x19c blocking_notifier_call_chain+0x64/0x98 bus_notify+0x50/0x7c device_add+0x640/0x918 pci_device_add+0x23c/0x298 of_create_pci_dev+0x400/0x884 of_scan_pci_dev+0x124/0x1b0 __of_scan_bus+0x78/0x18c pcibios_scan_phb+0x2a4/0x3b0 init_phb_dynamic+0xb8/0x110 dlpar_add_slot+0x170/0x3b8 [rpadlpar_io] add_slot_store.part.0+0xb4/0x130 [rpadlpar_io] kobj_attr_store+0x2c/0x48 sysfs_kf_write+0x64/0x78 kernfs_fop_write_iter+0x1b0/0x290 vfs_write+0x350/0x4a0 ksys_write+0x84/0x140 system_call_exception+0x124/0x330 system_call_vectored_common+0x15c/0x2ec Commit |
||
|
Linus Torvalds
|
c02197fc90 |
powerpc fixes for 6.8 #3
- Fix ftrace bug on boot caused by exit text sections with -fpatchable-function-entry.
- Fix accuracy of stolen time on pseries since the switch to VIRT_CPU_ACCOUNTING_GEN.
- Fix a crash in the IOMMU code when doing DLPAR remove.
- Set pt_regs->link on scv entry to fix BPF stack unwinding.
- Add missing PPC_FEATURE_BOOKE on 64-bit e5500/e6500, which broke gdb.
- Fix boot on some 6xx platforms with STRICT_KERNEL_RWX enabled.
- Fix build failures with KASAN enabled and 32KB stack size.
- Some other minor fixes.
Thanks to: Arnd Bergmann, Benjamin Gray, Christophe Leroy, David Engraf, Gaurav
Batra, Jason Gunthorpe, Jiangfeng Xiao, Matthias Schiffer, Nathan Lynch, Naveen
N Rao, Nicholas Piggin, Nysal Jan K.A, R Nageswara Sastry, Shivaprasad G Bhat,
Shrikanth Hegde, Spoorthy, Srikar Dronamraju, Venkat Rao Bagalkote.
-----BEGIN PGP SIGNATURE-----
iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmXRQ64THG1wZUBlbGxl
cm1hbi5pZC5hdQAKCRBR6+o8yOGlgNpvD/kBw+HCCTOCIG1R5qW76PE3zek5ikkn
TmzmovQv51S2NH/NJ1vuy12/xs7kkiyKMcLi2G5Ua1HVaGtLRwn25pWsJZpWJii+
inBPCn8lRaXiDNqPCtF3xMvypWtLEvoQnUtH9If6XXEfmzo5TfoRuJdH0TF6eEuM
A6abVONL7qYt/zGM2RhRrkVexznFk3SfF1UvKoR+6LMGVhgdW66mTKwcEt9KPn2X
hOjtBShXQYR315qv3FJQdUQooiwdIqM7IaZf32oFoG1U/iHz+3wzHcG+83iggZEa
jQMxthyeFjLWExT8dKwiLrTuaCa8B0bRKLypGcub1yh396/xcHv4KrX8XNJ3nQoL
nKcQOcPkcd+ZVAfigu7wGUS12CKmuFLUTXspgGp3CJQKzBUfLMaVqlAY/DnKEgmc
stQVi8pOv1puAE3qS2FK7HR0AdLTu0BRTdw8xfTOyfLeoYiGQQRLYnBhxb9HtwW7
HbVjpicE6VSth1BVGfgdmWH0n/a8cuuhXYOGzJ8ug1dCjgZc3zBISVx2B1yortri
vypyMhZ8t4i6j8B2fFRSQ1O0PY/0NmoQ6Yg2JIwIjaO5IbWkyI/KjO5VgdZTkbuV
8i4VLBHvSUUQwd1wBLeNQFD9nLnyJAYo7qvvtBCntmUx6ZNrPihXP4fRjz/la5rJ
I3xlArKK088RMw==
=TiJM
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"This is a bit of a big batch for rc4, but just due to holiday hangover
and because I didn't send any fixes last week due to a late revert
request. I think next week should be back to normal.
- Fix ftrace bug on boot caused by exit text sections with
'-fpatchable-function-entry'
- Fix accuracy of stolen time on pseries since the switch to
VIRT_CPU_ACCOUNTING_GEN
- Fix a crash in the IOMMU code when doing DLPAR remove
- Set pt_regs->link on scv entry to fix BPF stack unwinding
- Add missing PPC_FEATURE_BOOKE on 64-bit e5500/e6500, which broke
gdb
- Fix boot on some 6xx platforms with STRICT_KERNEL_RWX enabled
- Fix build failures with KASAN enabled and 32KB stack size
- Some other minor fixes
Thanks to Arnd Bergmann, Benjamin Gray, Christophe Leroy, David
Engraf, Gaurav Batra, Jason Gunthorpe, Jiangfeng Xiao, Matthias
Schiffer, Nathan Lynch, Naveen N Rao, Nicholas Piggin, Nysal Jan K.A,
R Nageswara Sastry, Shivaprasad G Bhat, Shrikanth Hegde, Spoorthy,
Srikar Dronamraju, and Venkat Rao Bagalkote"
* tag 'powerpc-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/iommu: Fix the missing iommu_group_put() during platform domain attach
powerpc/pseries: fix accuracy of stolen time
powerpc/ftrace: Ignore ftrace locations in exit text sections
powerpc/cputable: Add missing PPC_FEATURE_BOOKE on PPC64 Book-E
powerpc/kasan: Limit KASAN thread size increase to 32KB
Revert "powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add"
powerpc: 85xx: mark local functions static
powerpc: udbg_memcons: mark functions static
powerpc/kasan: Fix addr error caused by page alignment
powerpc/6xx: set High BAT Enable flag on G2_LE cores
selftests/powerpc/papr_vpd: Check devfd before get_system_loc_code()
powerpc/64: Set task pt_regs->link to the LR value on scv entry
powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add
powerpc/pseries/papr-sysparm: use u8 arrays for payloads
|
||
|
Michael Ellerman
|
0875f1ceba |
powerpc/smp: Remap boot CPU onto core 0 if >= nr_cpu_ids
If nr_cpu_ids is too low to include the boot CPU, remap the boot CPU onto logical core 0. This is achieved in two stages. In early_init_dt_scan_cpus() the boot CPU is renumbered to be on logical core 0, and the original boot core's hardware ID is recorded. Later in smp_setup_cpu_maps(), if the original boot core ID is set, the logical CPU numbers on the 0th core are skipped in the normal device tree search over CPU device tree nodes. Then the search is continued until the device tree node matching the boot core is found, and those CPUs are assigned the CPU numbers starting at 0. This allows kdump kernels to be booted with low values for nr_cpu_ids to conserve memory, while also allowing the crashing/boot CPU to be any CPU. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Wen Xiong <wenxiong@us.ibm.com> Link: https://msgid.link/20231229120107.2281153-5-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
9832de6544 |
powerpc/smp: Factor out assign_threads()
Factor out the for loop that assigns CPU numbers to threads of a core. The function takes the next CPU number to use as input, and returns the next available CPU number after the threads has been assigned. This will allow a subsequent change to assign threads out of order. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-4-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
dca79603fb |
powerpc/smp: Lookup avail once per device tree node
The of_device_is_available() check only needs to be done once per device node, there's no need to repeat it for each thread. Move it out of the loop. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-3-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
777f81f0a9 |
powerpc/smp: Increase nr_cpu_ids to include the boot CPU
If nr_cpu_ids is too low to include the boot CPU adjust nr_cpu_ids upward. Otherwise the kernel will BUG when trying to allocate a paca for the boot CPU and fail to boot. Cc: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-2-mpe@ellerman.id.au |
||
|
Michael Ellerman
|
5580e96dad |
powerpc/smp: Adjust nr_cpu_ids to cover all threads of a core
If nr_cpu_ids is too low to include at least all the threads of a single core adjust nr_cpu_ids upwards. This avoids triggering odd bugs in code that assumes all threads of a core are available. Cc: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-1-mpe@ellerman.id.au |
||
|
Shivaprasad G Bhat
|
0846dd77c8 |
powerpc/iommu: Fix the missing iommu_group_put() during platform domain attach
The function spapr_tce_platform_iommu_attach_dev() is missing to call
iommu_group_put() when the domain is already set. This refcount leak
shows up with BUG_ON() during DLPAR remove operation as:
KernelBug: Kernel bug in state 'None': kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!
Oops: Exception in kernel mode, sig: 5 [#1]
LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries
<snip>
Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries
NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000
REGS: c0000013aed5f840 TRAP: 0700 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e)
MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 44002402 XER: 20040000
CFAR: c000000000a0d170 IRQMASK: 0
...
NIP iommu_reconfig_notifier+0x94/0x200
LR iommu_reconfig_notifier+0x8c/0x200
Call Trace:
iommu_reconfig_notifier+0x8c/0x200 (unreliable)
notifier_call_chain+0xb8/0x19c
blocking_notifier_call_chain+0x64/0x98
of_reconfig_notify+0x44/0xdc
of_detach_node+0x78/0xb0
ofdt_write.part.0+0x86c/0xbb8
proc_reg_write+0xf4/0x150
vfs_write+0xf8/0x488
ksys_write+0x84/0x140
system_call_exception+0x138/0x330
system_call_vectored_common+0x15c/0x2ec
The patch adds the missing iommu_group_put() call.
Fixes:
|
||
|
Naveen N Rao
|
ea73179e64 |
powerpc/ftrace: Ignore ftrace locations in exit text sections
Michael reported that we are seeing an ftrace bug on bootup when KASAN
is enabled and we are using -fpatchable-function-entry:
ftrace: allocating 47780 entries in 18 pages
ftrace-powerpc: 0xc0000000020b3d5c: No module provided for non-kernel address
------------[ ftrace bug ]------------
ftrace faulted on modifying
[<c0000000020b3d5c>] 0xc0000000020b3d5c
Initializing ftrace call sites
ftrace record flags: 0
(0)
expected tramp: c00000000008cef4
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/trace/ftrace.c:2180 ftrace_bug+0x3c0/0x424
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0-rc3-00120-g0f71dcfb4aef #860
Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries
NIP: c0000000003aa81c LR: c0000000003aa818 CTR: 0000000000000000
REGS: c0000000033cfab0 TRAP: 0700 Not tainted (6.5.0-rc3-00120-g0f71dcfb4aef)
MSR: 8000000002021033 <SF,VEC,ME,IR,DR,RI,LE> CR: 28028240 XER: 00000000
CFAR: c0000000002781a8 IRQMASK: 3
...
NIP [c0000000003aa81c] ftrace_bug+0x3c0/0x424
LR [c0000000003aa818] ftrace_bug+0x3bc/0x424
Call Trace:
ftrace_bug+0x3bc/0x424 (unreliable)
ftrace_process_locs+0x5f4/0x8a0
ftrace_init+0xc0/0x1d0
start_kernel+0x1d8/0x484
With CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY=y and
CONFIG_KASAN=y, compiler emits nops in functions that it generates for
registering and unregistering global variables (unlike with -pg and
-mprofile-kernel where calls to _mcount() are not generated in those
functions). Those functions then end up in INIT_TEXT and EXIT_TEXT
respectively. We don't expect to see any profiled functions in
EXIT_TEXT, so ftrace_init_nop() assumes that all addresses that aren't
in the core kernel text belongs to a module. Since these functions do
not match that criteria, we see the above bug.
Address this by having ftrace ignore all locations in the text exit
sections of vmlinux.
Fixes:
|
||
|
David Engraf
|
eb6d871f4b |
powerpc/cputable: Add missing PPC_FEATURE_BOOKE on PPC64 Book-E
Commit |
||
|
Michael Ellerman
|
1fba2bf8e9 |
Revert "powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add"
This reverts commit
|
||
|
Linus Torvalds
|
4356e9f841 |
work around gcc bugs with 'asm goto' with outputs
We've had issues with gcc and 'asm goto' before, and we created a 'asm_volatile_goto()' macro for that in the past: see commits |
||
|
Matthias Schiffer
|
a038a3ff8c |
powerpc/6xx: set High BAT Enable flag on G2_LE cores
MMU_FTR_USE_HIGH_BATS is set for G2_LE cores and derivatives like e300cX,
but the high BATs need to be enabled in HID2 to work. Add register
definitions and add the needed setup to __setup_cpu_603.
This fixes boot on CPUs like the MPC5200B with STRICT_KERNEL_RWX enabled
on systems where the flag has not been set by the bootloader already.
Fixes:
|
||
|
Naveen N Rao
|
aad98efd0b |
powerpc/64: Set task pt_regs->link to the LR value on scv entry
Nysal reported that userspace backtraces are missing in offcputime bcc
tool. As an example:
$ sudo ./bcc/tools/offcputime.py -uU
Tracing off-CPU time (us) of user threads by user stack... Hit Ctrl-C to end.
^C
write
- python (9107)
8
write
- sudo (9105)
9
mmap
- python (9107)
16
clock_nanosleep
- multipathd (697)
3001604
The offcputime bcc tool attaches a bpf program to a kprobe on
finish_task_switch(), which is usually hit on a syscall from userspace.
With the switch to system call vectored, we started setting
pt_regs->link to zero. This is because system call vectored behaves like
a function call with LR pointing to the system call return address, and
with no modification to SRR0/SRR1. The LR value does indicate our next
instruction, so it is being saved as pt_regs->nip, and pt_regs->link is
being set to zero. This is not a problem by itself, but BPF uses perf
callchain infrastructure for capturing stack traces, and that stores LR
as the second entry in the stack trace. perf has code to cope with the
second entry being zero, and skips over it. However, generic userspace
unwinders assume that a zero entry indicates end of the stack trace,
resulting in a truncated userspace stack trace.
Rather than fixing all userspace unwinders to ignore/skip past the
second entry, store the real LR value in pt_regs->link so that there
continues to be a valid, though duplicate entry in the stack trace.
With this change:
$ sudo ./bcc/tools/offcputime.py -uU
Tracing off-CPU time (us) of user threads by user stack... Hit Ctrl-C to end.
^C
write
write
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
PyObject_VectorcallMethod
[unknown]
[unknown]
PyObject_CallOneArg
PyFile_WriteObject
PyFile_WriteString
[unknown]
[unknown]
PyObject_Vectorcall
_PyEval_EvalFrameDefault
PyEval_EvalCode
[unknown]
[unknown]
[unknown]
_PyRun_SimpleFileObject
_PyRun_AnyFileObject
Py_RunMain
[unknown]
Py_BytesMain
[unknown]
__libc_start_main
- python (1293)
7
write
write
[unknown]
sudo_ev_loop_v1
sudo_ev_dispatch_v1
[unknown]
[unknown]
[unknown]
[unknown]
__libc_start_main
- sudo (1291)
7
syscall
syscall
bpf_open_perf_buffer_opts
[unknown]
[unknown]
[unknown]
[unknown]
_PyObject_MakeTpCall
PyObject_Vectorcall
_PyEval_EvalFrameDefault
PyEval_EvalCode
[unknown]
[unknown]
[unknown]
_PyRun_SimpleFileObject
_PyRun_AnyFileObject
Py_RunMain
[unknown]
Py_BytesMain
[unknown]
__libc_start_main
- python (1293)
11
clock_nanosleep
clock_nanosleep
nanosleep
sleep
[unknown]
[unknown]
__clone
- multipathd (698)
3001661
Fixes:
|
||
|
Gaurav Batra
|
ed8b94f6e0 |
powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add
When a PCI device is dynamically added, the kernel oopses with a NULL pointer dereference: BUG: Kernel NULL pointer dereference on read at 0x00000030 Faulting instruction address: 0xc0000000006bbe5c Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries Modules linked in: rpadlpar_io rpaphp rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs xsk_diag bonding nft_compat nf_tables nfnetlink rfkill binfmt_misc dm_multipath rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_umad ib_iser libiscsi scsi_transport_iscsi ib_ipoib rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c mlx5_core mlxfw sd_mod t10_pi sg tls ibmvscsi ibmveth scsi_transport_srp vmx_crypto pseries_wdt psample dm_mirror dm_region_hash dm_log dm_mod fuse CPU: 17 PID: 2685 Comm: drmgr Not tainted 6.7.0-203405+ #66 Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries NIP: c0000000006bbe5c LR: c000000000a13e68 CTR: c0000000000579f8 REGS: c00000009924f240 TRAP: 0300 Not tainted (6.7.0-203405+) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24002220 XER: 20040006 CFAR: c000000000a13e64 DAR: 0000000000000030 DSISR: 40000000 IRQMASK: 0 ... NIP sysfs_add_link_to_group+0x34/0x94 LR iommu_device_link+0x5c/0x118 Call Trace: iommu_init_device+0x26c/0x318 (unreliable) iommu_device_link+0x5c/0x118 iommu_init_device+0xa8/0x318 iommu_probe_device+0xc0/0x134 iommu_bus_notifier+0x44/0x104 notifier_call_chain+0xb8/0x19c blocking_notifier_call_chain+0x64/0x98 bus_notify+0x50/0x7c device_add+0x640/0x918 pci_device_add+0x23c/0x298 of_create_pci_dev+0x400/0x884 of_scan_pci_dev+0x124/0x1b0 __of_scan_bus+0x78/0x18c pcibios_scan_phb+0x2a4/0x3b0 init_phb_dynamic+0xb8/0x110 dlpar_add_slot+0x170/0x3b8 [rpadlpar_io] add_slot_store.part.0+0xb4/0x130 [rpadlpar_io] kobj_attr_store+0x2c/0x48 sysfs_kf_write+0x64/0x78 kernfs_fop_write_iter+0x1b0/0x290 vfs_write+0x350/0x4a0 ksys_write+0x84/0x140 system_call_exception+0x124/0x330 system_call_vectored_common+0x15c/0x2ec Commit |
||
|
Shivaprasad G Bhat
|
d2d00e1580 |
powerpc: iommu: Bring back table group release_ownership() call
The commit |
||
|
Linus Torvalds
|
78273df7f6 |
header cleanups for 6.8
The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies. Testing - it's been in -next, and fixes from pretty much all architectures have percolated in - nothing major. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmWfBwwACgkQE6szbY3K bnZPwBAAmuRojXaeWxi01IPIOehSGDe68vw44PR9glEMZvxdnZuPOdvE4/+245/L bRKU2WBCjBUokUbV9msIShwRkFTZAmEMPNfPAAsFMA+VXeDYHKB+ZRdwTggNAQ+I SG6fZgh5m0HsewCDxU8oqVHkjVq4fXn0cy+aL6xLEd9gu67GoBzX2pDieS2Kvy6j jnyoKTxFwb+LTQgph0P4EIpq5I2umAsdLwdSR8EJ+8e9NiNvMo1pI00Lx/ntAnFZ JftWUJcMy3TQ5u1GkyfQN9y/yThX1bZK5GvmHS9SJ2Dkacaus5d+xaKCHtRuFS1I 7C6b8PsNgRczUMumBXus44HdlNfNs1yU3lvVxFvBIPE1qC9pYRHrkWIXXIocXLLC oxTEJ6B2G3BQZVQgLIA4fOaxMVhmvKffi/aEZLi9vN9VVosd1a6XNKI6KbyRnXFp GSs9qDqszhn5I3GYNlDNQTc/8UsRlhPFgS6nS0By6QnvxtGi9QkU2tBRBsXvqwCy cLoCYIhc2tvugHvld70dz26umiJ4rnmxGlobStNoigDvIKAIUt1UmIdr1so8P8eH xehnL9ZcOX6xnANDL0AqMFFHV6I58CJynhFdUoXfVQf/DWLGX48mpi9LVNsYBzsI CAwVOAQ0UjGrpdWmJ9ueY/ABYqg9vRjzaDEXQ+MhAYO55CLaVsg= =3tyT -----END PGP SIGNATURE----- Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs Pull header cleanups from Kent Overstreet: "The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies" * tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits) Kill sched.h dependency on rcupdate.h kill unnecessary thread_info.h include Kill unnecessary kernel.h include preempt.h: Kill dependency on list.h rseq: Split out rseq.h from sched.h LoongArch: signal.c: add header file to fix build error restart_block: Trim includes lockdep: move held_lock to lockdep_types.h sem: Split out sem_types.h uidgid: Split out uidgid_types.h seccomp: Split out seccomp_types.h refcount: Split out refcount_types.h uapi/linux/resource.h: fix include x86/signal: kill dependency on time.h syscall_user_dispatch.h: split out *_types.h mm_types_task.h: Trim dependencies Split out irqflags_types.h ipc: Kill bogus dependency on spinlock.h shm: Slim down dependencies workqueue: Split out workqueue_types.h ... |
||
|
Linus Torvalds
|
999a36b52b |
bcachefs updates for 6.8:
- btree write buffer rewrite: instead of adding keys to the btree write
buffer at transaction commit time, we know journal them with a
different journal entry type and copy them from the journal to the
write buffer just prior to journal write.
This reduces the number of atomic operations on shared cachelines
in the transaction commit path and is a signicant performance
improvement on some workloads: multithreaded 4k random writes went
from ~650k iops to ~850k iops.
- Bring back optimistic spinning for six locks: the new implementation
doesn't use osq locks; instead we add to the lock waitlist as normal,
and then spin on the lock_acquired bit in the waitlist entry, _not_
the lock itself.
- BCH_IOCTL_DEV_USAGE_V2, which allows for new data types
- BCH_IOCTL_OFFLINE_FSCK, which runs the kernel implementation of fsck
but without mounting: useful for transparently using the kernel
version of fsck from 'bcachefs fsck' when the kernel version is a
better match for the on disk filesystem.
- BCH_IOCTL_ONLINE_FSCK: online fsck. Not all passes are supported yet,
but the passes that are supported are fully featured - errors may be
corrected as normal.
The new ioctls use the new 'thread_with_file' abstraction for kicking
off a kthread that's tied to a file descriptor returned to userspace
via the ioctl.
- btree_paths within a btree_trans are now dynamically growable,
instead of being limited to 64. This is important for the
check_directory_structure phase of fsck, and also fixes some issues
we were having with btree path overflow in the reflink btree.
- Trigger refactoring; prep work for the upcoming disk space accounting
rewrite
- Numerous bugfixes :)
-----BEGIN PGP SIGNATURE-----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=JvA2
-----END PGP SIGNATURE-----
Merge tag 'bcachefs-2024-01-10' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs updates from Kent Overstreet:
- btree write buffer rewrite: instead of adding keys to the btree write
buffer at transaction commit time, we now journal them with a
different journal entry type and copy them from the journal to the
write buffer just prior to journal write.
This reduces the number of atomic operations on shared cachelines in
the transaction commit path and is a signicant performance
improvement on some workloads: multithreaded 4k random writes went
from ~650k iops to ~850k iops.
- Bring back optimistic spinning for six locks: the new implementation
doesn't use osq locks; instead we add to the lock waitlist as normal,
and then spin on the lock_acquired bit in the waitlist entry, _not_
the lock itself.
- New ioctls:
- BCH_IOCTL_DEV_USAGE_V2, which allows for new data types
- BCH_IOCTL_OFFLINE_FSCK, which runs the kernel implementation of
fsck but without mounting: useful for transparently using the
kernel version of fsck from 'bcachefs fsck' when the kernel
version is a better match for the on disk filesystem.
- BCH_IOCTL_ONLINE_FSCK: online fsck. Not all passes are supported
yet, but the passes that are supported are fully featured - errors
may be corrected as normal.
The new ioctls use the new 'thread_with_file' abstraction for kicking
off a kthread that's tied to a file descriptor returned to userspace
via the ioctl.
- btree_paths within a btree_trans are now dynamically growable,
instead of being limited to 64. This is important for the
check_directory_structure phase of fsck, and also fixes some issues
we were having with btree path overflow in the reflink btree.
- Trigger refactoring; prep work for the upcoming disk space accounting
rewrite
- Numerous bugfixes :)
* tag 'bcachefs-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (226 commits)
bcachefs: eytzinger0_find() search should be const
bcachefs: move "ptrs not changing" optimization to bch2_trigger_extent()
bcachefs: fix simulateously upgrading & downgrading
bcachefs: Restart recovery passes more reliably
bcachefs: bch2_dump_bset() doesn't choke on u64s == 0
bcachefs: improve checksum error messages
bcachefs: improve validate_bset_keys()
bcachefs: print sb magic when relevant
bcachefs: __bch2_sb_field_to_text()
bcachefs: %pg is banished
bcachefs: Improve would_deadlock trace event
bcachefs: fsck_err()s don't need to manually check c->sb.version anymore
bcachefs: Upgrades now specify errors to fix, like downgrades
bcachefs: no thread_with_file in userspace
bcachefs: Don't autofix errors we can't fix
bcachefs: add missing bch2_latency_acct() call
bcachefs: increase max_active on io_complete_wq
bcachefs: add time_stats for btree_node_read_done()
bcachefs: don't clear accessed bit in btree node fill
bcachefs: Add an option to control btree node prefetching
...
|
||
|
Linus Torvalds
|
063a7ce32d |
lsm/stable-6.8 PR 20240105
-----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmWYKUIUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXNyHw/+IKnqL1MZ5QS+/HtSzi4jCL47N9yZ OHLol6XswyEGHH9myKPPGnT5lVA93v98v4ty2mws7EJUSGZQQUntYBPbU9Gi40+B XDzYSRocoj96sdlKeOJMgaWo3NBRD9HYSoGPDNWZixy6m+bLPk/Dqhn3FabKf1lo 2qQSmstvChFRmVNkmgaQnBCAtWVqla4EJEL0EKX6cspHbuzRNTeJdTPn6Q/zOUVL O2znOZuEtSVpYS7yg3uJT0hHD8H0GnIciAcDAhyPSBL5Uk5l6gwJiACcdRfLRbgp QM5Z4qUFdKljV5XBCzYnfhhrx1df08h1SG84El8UK8HgTTfOZfYmawByJRWNJSQE TdCmtyyvEbfb61CKBFVwD7Tzb9/y8WgcY5N3Un8uCQqRzFIO+6cghHri5NrVhifp nPFlP4klxLHh3d7ZVekLmCMHbpaacRyJKwLy+f/nwbBEID47jpPkvZFIpbalat+r QaKRBNWdTeV+GZ+Yu0uWsI029aQnpcO1kAnGg09fl6b/dsmxeKOVWebir25AzQ++ a702S8HRmj80X+VnXHU9a64XeGtBH7Nq0vu0lGHQPgwhSx/9P6/qICEPwsIriRjR I9OulWt4OBPDtlsonHFgDs+lbnd0Z0GJUwYT8e9pjRDMxijVO9lhAXyglVRmuNR8 to2ByKP5BO+Vh8Y= =Py+n -----END PGP SIGNATURE----- Merge tag 'lsm-pr-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm Pull security module updates from Paul Moore: - Add three new syscalls: lsm_list_modules(), lsm_get_self_attr(), and lsm_set_self_attr(). The first syscall simply lists the LSMs enabled, while the second and third get and set the current process' LSM attributes. Yes, these syscalls may provide similar functionality to what can be found under /proc or /sys, but they were designed to support multiple, simultaneaous (stacked) LSMs from the start as opposed to the current /proc based solutions which were created at a time when only one LSM was allowed to be active at a given time. We have spent considerable time discussing ways to extend the existing /proc interfaces to support multiple, simultaneaous LSMs and even our best ideas have been far too ugly to support as a kernel API; after +20 years in the kernel, I felt the LSM layer had established itself enough to justify a handful of syscalls. Support amongst the individual LSM developers has been nearly unanimous, with a single objection coming from Tetsuo (TOMOYO) as he is worried that the LSM_ID_XXX token concept will make it more difficult for out-of-tree LSMs to survive. Several members of the LSM community have demonstrated the ability for out-of-tree LSMs to continue to exist by picking high/unused LSM_ID values as well as pointing out that many kernel APIs rely on integer identifiers, e.g. syscalls (!), but unfortunately Tetsuo's objections remain. My personal opinion is that while I have no interest in penalizing out-of-tree LSMs, I'm not going to penalize in-tree development to support out-of-tree development, and I view this as a necessary step forward to support the push for expanded LSM stacking and reduce our reliance on /proc and /sys which has occassionally been problematic for some container users. Finally, we have included the linux-api folks on (all?) recent revisions of the patchset and addressed all of their concerns. - Add a new security_file_ioctl_compat() LSM hook to handle the 32-bit ioctls on 64-bit systems problem. This patch includes support for all of the existing LSMs which provide ioctl hooks, although it turns out only SELinux actually cares about the individual ioctls. It is worth noting that while Casey (Smack) and Tetsuo (TOMOYO) did not give explicit ACKs to this patch, they did both indicate they are okay with the changes. - Fix a potential memory leak in the CALIPSO code when IPv6 is disabled at boot. While it's good that we are fixing this, I doubt this is something users are seeing in the wild as you need to both disable IPv6 and then attempt to configure IPv6 labeled networking via NetLabel/CALIPSO; that just doesn't make much sense. Normally this would go through netdev, but Jakub asked me to take this patch and of all the trees I maintain, the LSM tree seemed like the best fit. - Update the LSM MAINTAINERS entry with additional information about our process docs, patchwork, bug reporting, etc. I also noticed that the Lockdown LSM is missing a dedicated MAINTAINERS entry so I've added that to the pull request. I've been working with one of the major Lockdown authors/contributors to see if they are willing to step up and assume a Lockdown maintainer role; hopefully that will happen soon, but in the meantime I'll continue to look after it. - Add a handful of mailmap entries for Serge Hallyn and myself. * tag 'lsm-pr-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: (27 commits) lsm: new security_file_ioctl_compat() hook lsm: Add a __counted_by() annotation to lsm_ctx.ctx calipso: fix memory leak in netlbl_calipso_add_pass() selftests: remove the LSM_ID_IMA check in lsm/lsm_list_modules_test MAINTAINERS: add an entry for the lockdown LSM MAINTAINERS: update the LSM entry mailmap: add entries for Serge Hallyn's dead accounts mailmap: update/replace my old email addresses lsm: mark the lsm_id variables are marked as static lsm: convert security_setselfattr() to use memdup_user() lsm: align based on pointer length in lsm_fill_user_ctx() lsm: consolidate buffer size handling into lsm_fill_user_ctx() lsm: correct error codes in security_getselfattr() lsm: cleanup the size counters in security_getselfattr() lsm: don't yet account for IMA in LSM_CONFIG_COUNT calculation lsm: drop LSM_ID_IMA LSM: selftests for Linux Security Module syscalls SELinux: Add selfattr hooks AppArmor: Add selfattr hooks Smack: implement setselfattr and getselfattr hooks ... |
||
|
Linus Torvalds
|
968b803324 |
powerpc updates for 6.8
- Add initial support to recognise the HeXin C2000 processor.
- Add papr-vpd and papr-sysparm character device drivers for VPD & sysparm
retrieval, so userspace tools can be adapted to avoid doing raw firmware
calls from userspace.
- Sched domains optimisations for shared processor partitions on P9/P10.
- A series of optimisations for KVM running as a nested HV under PowerVM.
- Other small features and fixes.
Thanks to: Aditya Gupta, Aneesh Kumar K.V, Arnd Bergmann, Christophe Leroy,
Colin Ian King, Dario Binacchi, David Heidelberg, Geoff Levand, Gustavo A.
R. Silva, Haoran Liu, Jordan Niethe, Kajol Jain, Kevin Hao, Kunwu Chan, Li
kunyu, Li zeming, Masahiro Yamada, Michal Suchánek, Nathan Lynch, Naveen N Rao,
Nicholas Piggin, Randy Dunlap, Sathvika Vasireddy, Srikar Dronamraju, Stephen
Rothwell, Vaibhav Jain, Zhao Ke.
-----BEGIN PGP SIGNATURE-----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=LjlQ
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add initial support to recognise the HeXin C2000 processor.
- Add papr-vpd and papr-sysparm character device drivers for VPD &
sysparm retrieval, so userspace tools can be adapted to avoid doing
raw firmware calls from userspace.
- Sched domains optimisations for shared processor partitions on
P9/P10.
- A series of optimisations for KVM running as a nested HV under
PowerVM.
- Other small features and fixes.
Thanks to Aditya Gupta, Aneesh Kumar K.V, Arnd Bergmann, Christophe
Leroy, Colin Ian King, Dario Binacchi, David Heidelberg, Geoff Levand,
Gustavo A. R. Silva, Haoran Liu, Jordan Niethe, Kajol Jain, Kevin Hao,
Kunwu Chan, Li kunyu, Li zeming, Masahiro Yamada, Michal Suchánek,
Nathan Lynch, Naveen N Rao, Nicholas Piggin, Randy Dunlap, Sathvika
Vasireddy, Srikar Dronamraju, Stephen Rothwell, Vaibhav Jain, and
Zhao Ke.
* tag 'powerpc-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (96 commits)
powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2
powerpc/86xx: Drop unused CONFIG_MPC8610
powerpc/powernv: Add error handling to opal_prd_range_is_valid
selftests/powerpc: Fix spelling mistake "EACCESS" -> "EACCES"
powerpc/hvcall: Reorder Nestedv2 hcall opcodes
powerpc/ps3: Add missing set_freezable() for ps3_probe_thread()
powerpc/mpc83xx: Use wait_event_freezable() for freezable kthread
powerpc/mpc83xx: Add the missing set_freezable() for agent_thread_fn()
powerpc/fsl: Fix fsl,tmu-calibration to match the schema
powerpc/smp: Dynamically build Powerpc topology
powerpc/smp: Avoid asym packing within thread_group of a core
powerpc/smp: Add __ro_after_init attribute
powerpc/smp: Disable MC domain for shared processor
powerpc/smp: Enable Asym packing for cores on shared processor
powerpc/sched: Cleanup vcpu_is_preempted()
powerpc: add cpu_spec.cpu_features to vmcoreinfo
powerpc/imc-pmu: Add a null pointer check in update_events_in_group()
powerpc/powernv: Add a null pointer check in opal_powercap_init()
powerpc/powernv: Add a null pointer check in opal_event_init()
powerpc/powernv: Add a null pointer check to scom_debug_init_one()
...
|
||
|
Linus Torvalds
|
8c9440fea7 |
vfs-6.8.mount
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCZZU0CgAKCRCRxhvAZXjc
osncAQDSJK0frJL+72NqXxa4YNzivrnuw6fhp5iaDAEqxdm8ygEAoJWyh7Rmkt8G
drAXWGyGnCYqv7UgC6axLyciid7TxQg=
=vJuv
-----END PGP SIGNATURE-----
Merge tag 'vfs-6.8.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs mount updates from Christian Brauner:
"This contains the work to retrieve detailed information about mounts
via two new system calls. This is hopefully the beginning of the end
of the saga that started with fsinfo() years ago.
The LWN articles in [1] and [2] can serve as a summary so we can avoid
rehashing everything here.
At LSFMM in May 2022 we got into a room and agreed on what we want to
do about fsinfo(). Basically, split it into pieces. This is the first
part of that agreement. Specifically, it is concerned with retrieving
information about mounts. So this only concerns the mount information
retrieval, not the mount table change notification, or the extended
filesystem specific mount option work. That is separate work.
Currently mounts have a 32bit id. Mount ids are already in heavy use
by libmount and other low-level userspace but they can't be relied
upon because they're recycled very quickly. We agreed that mounts
should carry a unique 64bit id by which they can be referenced
directly. This is now implemented as part of this work.
The new 64bit mount id is exposed in statx() through the new
STATX_MNT_ID_UNIQUE flag. If the flag isn't raised the old mount id is
returned. If it is raised and the kernel supports the new 64bit mount
id the flag is raised in the result mask and the new 64bit mount id is
returned. New and old mount ids do not overlap so they cannot be
conflated.
Two new system calls are introduced that operate on the 64bit mount
id: statmount() and listmount(). A summary of the api and usage can be
found on LWN as well (cf. [3]) but of course, I'll provide a summary
here as well.
Both system calls rely on struct mnt_id_req. Which is the request
struct used to pass the 64bit mount id identifying the mount to
operate on. It is extensible to allow for the addition of new
parameters and for future use in other apis that make use of mount
ids.
statmount() mimicks the semantics of statx() and exposes a set flags
that userspace may raise in mnt_id_req to request specific information
to be retrieved. A statmount() call returns a struct statmount filled
in with information about the requested mount. Supported requests are
indicated by raising the request flag passed in struct mnt_id_req in
the @mask argument in struct statmount.
Currently we do support:
- STATMOUNT_SB_BASIC:
Basic filesystem info
- STATMOUNT_MNT_BASIC
Mount information (mount id, parent mount id, mount attributes etc)
- STATMOUNT_PROPAGATE_FROM
Propagation from what mount in current namespace
- STATMOUNT_MNT_ROOT
Path of the root of the mount (e.g., mount --bind /bla /mnt returns /bla)
- STATMOUNT_MNT_POINT
Path of the mount point (e.g., mount --bind /bla /mnt returns /mnt)
- STATMOUNT_FS_TYPE
Name of the filesystem type as the magic number isn't enough due to submounts
The string options STATMOUNT_MNT_{ROOT,POINT} and STATMOUNT_FS_TYPE
are appended to the end of the struct. Userspace can use the offsets
in @fs_type, @mnt_root, and @mnt_point to reference those strings
easily.
The struct statmount reserves quite a bit of space currently for
future extensibility. This isn't really a problem and if this bothers
us we can just send a follow-up pull request during this cycle.
listmount() is given a 64bit mount id via mnt_id_req just as
statmount(). It takes a buffer and a size to return an array of the
64bit ids of the child mounts of the requested mount. Userspace can
thus choose to either retrieve child mounts for a mount in batches or
iterate through the child mounts. For most use-cases it will be
sufficient to just leave space for a few child mounts. But for big
mount tables having an iterator is really helpful. Iterating through a
mount table works by setting @param in mnt_id_req to the mount id of
the last child mount retrieved in the previous listmount() call"
Link: https://lwn.net/Articles/934469 [1]
Link: https://lwn.net/Articles/829212 [2]
Link: https://lwn.net/Articles/950569 [3]
* tag 'vfs-6.8.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
add selftest for statmount/listmount
fs: keep struct mnt_id_req extensible
wire up syscalls for statmount/listmount
add listmount(2) syscall
statmount: simplify string option retrieval
statmount: simplify numeric option retrieval
add statmount(2) syscall
namespace: extract show_path() helper
mounts: keep list of mounts in an rbtree
add unique mount ID
|
||
|
Kent Overstreet
|
ee841b77b3 |
powerpc: Export kvm_guest static key, for bcachefs six locks
bcachefs's six locks need kvm_guest, via ower_on_cpu() -> vcpu_is_preempted() -> is_kvm_guest() Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) |
||
|
Kent Overstreet
|
932562a604 |
rseq: Split out rseq.h from sched.h
We're trying to get sched.h down to more or less just types only, not code - rseq can live in its own header. This helps us kill the dependency on preempt.h in sched.h. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Michael Ellerman
|
8fc63a91e7 |
Merge branch 'smp-topo' into next
Merge a branch containing SMP topology updates from Srikar, purely so we can include the cover letter which has a lot of good detail here: PowerVM systems configured in shared processors mode have some unique challenges. Some device-tree properties will be missing on a shared processor. Hence some sched domains may not make sense for shared processor systems. Most shared processor systems are over-provisioned. Underlying PowerVM Hypervisor would schedule at a Big Core (SMT8) granularity. The most recent power processors support two almost independent cores. In a lightly loaded condition, it helps the overall system performance if we pack to lesser number of Big Cores. Since each thread-group is independent, running threads on both the thread-groups of a SMT8 core, should have a minimal adverse impact in non over provisioned scenarios. These changes in this patchset will not affect in the over provisioned scenario. If there are more threads than SMT domains, then asym_packing will not kick-in. System Configuration type=Shared mode=Uncapped smt=8 lcpu=96 mem=1066409344 kB cpus=96 ent=64.00 So *64 Entitled cores/ 96 Virtual processor* Scenario lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 768 On-line CPU(s) list: 0-767 Model name: POWER10 (architected), altivec supported Model: 2.0 (pvr 0080 0200) Thread(s) per core: 8 Core(s) per socket: 16 Socket(s): 6 Hypervisor vendor: pHyp Virtualization type: para L1d cache: 6 MiB (192 instances) L1i cache: 9 MiB (192 instances) NUMA node(s): 6 NUMA node0 CPU(s): 0-7,32-39,80-87,128-135,176-183,224-231,272-279,320-327,368-375,416-423,464-471,512-519,560-567,608-615,656-663,704-711,752-759 NUMA node1 CPU(s): 8-15,40-47,88-95,136-143,184-191,232-239,280-287,328-335,376-383,424-431,472-479,520-527,568-575,616-623,664-671,712-719,760-767 NUMA node4 CPU(s): 64-71,112-119,160-167,208-215,256-263,304-311,352-359,400-407,448-455,496-503,544-551,592-599,640-647,688-695,736-743 NUMA node5 CPU(s): 16-23,48-55,96-103,144-151,192-199,240-247,288-295,336-343,384-391,432-439,480-487,528-535,576-583,624-631,672-679,720-727 NUMA node6 CPU(s): 72-79,120-127,168-175,216-223,264-271,312-319,360-367,408-415,456-463,504-511,552-559,600-607,648-655,696-703,744-751 NUMA node7 CPU(s): 24-31,56-63,104-111,152-159,200-207,248-255,296-303,344-351,392-399,440-447,488-495,536-543,584-591,632-639,680-687,728-735 ebizzy -t 32 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 3840178 4059268 3978042 3973936.6 84264.456 +patch 5 3768393 3927901 3874994 3854046 71532.926 -3.01692 >From lparstat (when the workload stabilized) Kernel %user %sys %wait %idle physc %entc lbusy app vcsw phint 6.6.0-rc3 4.16 0.00 0.00 95.84 26.06 40.72 4.16 69.88 276906989 578 +patch 4.16 0.00 0.00 95.83 17.70 27.66 4.17 78.26 70436663 119 ebizzy -t 128 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 5520692 5981856 5717709 5727053.2 176093.2 +patch 5 5305888 6259610 5854590 5843311 375917.03 2.02998 >From lparstat (when the workload stabilized) Kernel %user %sys %wait %idle physc %entc lbusy app vcsw phint 6.6.0-rc3 16.66 0.00 0.00 83.33 45.49 71.08 16.67 50.50 288778533 581 +patch 16.65 0.00 0.00 83.35 30.15 47.11 16.65 65.76 85196150 133 ebizzy -t 512 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 19563921 20049955 19701510 19728733 198295.18 +patch 5 19455992 20176445 19718427 19832017 304094.05 0.523521 >From lparstat (when the workload stabilized) %Kernel user %sys %wait %idle physc %entc lbusy app vcsw phint 66.6.0-rc3 6.44 0.01 0.00 33.55 94.14 147.09 66.45 1.33 313345175 621 6+patch 6.44 0.01 0.00 33.55 94.15 147.11 66.45 1.33 109193889 309 System Configuration type=Shared mode=Uncapped smt=8 lcpu=40 mem=1067539392 kB cpus=96 ent=40.00 So *40 Entitled cores/ 40 Virtual processor* Scenario lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 320 On-line CPU(s) list: 0-319 Model name: POWER10 (architected), altivec supported Model: 2.0 (pvr 0080 0200) Thread(s) per core: 8 Core(s) per socket: 10 Socket(s): 4 Hypervisor vendor: pHyp Virtualization type: para L1d cache: 2.5 MiB (80 instances) L1i cache: 3.8 MiB (80 instances) NUMA node(s): 4 NUMA node0 CPU(s): 0-7,32-39,64-71,96-103,128-135,160-167,192-199,224-231,256-263,288-295 NUMA node1 CPU(s): 8-15,40-47,72-79,104-111,136-143,168-175,200-207,232-239,264-271,296-303 NUMA node4 CPU(s): 16-23,48-55,80-87,112-119,144-151,176-183,208-215,240-247,272-279,304-311 NUMA node5 CPU(s): 24-31,56-63,88-95,120-127,152-159,184-191,216-223,248-255,280-287,312-319 ebizzy -t 32 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 3535518 3864532 3745967 3704233.2 130216.76 +patch 5 3608385 3708026 3649379 3651596.6 37862.163 -1.42099 %Kernel user %sys %wait %idle physc %entc lbusy app vcsw phint 6.6.0-rc3 10.00 0.01 0.00 89.99 22.98 57.45 10.01 41.01 1135139 262 +patch 10.00 0.00 0.00 90.00 16.95 42.37 10.00 47.05 925561 19 ebizzy -t 64 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 4434984 4957281 4548786 4591298.2 211770.2 +patch 5 4461115 4835167 4544716 4607795.8 151474.85 0.359323 %Kernel user %sys %wait %idle physc %entc lbusy app vcsw phint 6.6.0-rc3 20.01 0.00 0.00 79.99 38.22 95.55 20.01 25.77 1287553 265 +patch 19.99 0.00 0.00 80.01 25.55 63.88 19.99 38.44 1077341 20 ebizzy -t 256 -S 200 (5 iterations) Records per second. (Higher is better) Kernel N Min Max Median Avg Stddev %Change 6.6.0-rc3 5 8850648 8982659 8951911 8936869.2 52278.031 +patch 5 8751038 9060510 8981409 8942268.4 117070.6 0.0604149 %Kernel user %sys %wait %idle physc %entc lbusy app vcsw phint 6.6.0-rc3 80.02 0.01 0.01 19.96 40.00 100.00 80.03 24.00 1597665 276 +patch 80.02 0.01 0.01 19.96 40.00 100.00 80.03 23.99 1383921 63 Observation: We are able to see Improvement in ebizzy throughput even with lesser core utilization (almost half the core utilization) in low utilization scenarios while still retaining throughput in mid and higher utilization scenarios. Note: The numbers are with Uncapped + no-noise case. In the Capped and/or noise case, due to contention on the Cores, the numbers are expected to further improve. Note: The numbers included (sched/fair: Enable group_asym_packing in find_idlest_group) https://lore.kernel.org/all/20231018155036.2314342-1-srikar@linux.vnet.ibm.com/ |
||
|
Srikar Dronamraju
|
c46975715f |
powerpc/smp: Dynamically build Powerpc topology
Currently there are four Powerpc specific sched topologies. These are all statically defined. However not all these topologies are used by all Powerpc systems. To avoid unnecessary degenerations by the scheduler, masks and flags are compared. However if the sched topologies are build dynamically then the code is simpler and there are greater chances of avoiding degenerations. Note: Even X86 builds its sched topologies dynamically and proposed changes are very similar to the way X86 is building its topologies. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214180720.310852-6-srikar@linux.vnet.ibm.com |
||
|
Srikar Dronamraju
|
0e93f1c780 |
powerpc/smp: Avoid asym packing within thread_group of a core
PowerVM Hypervisor will schedule at a core granularity. However each core can have more than one thread_groups. For better utilization in case of a shared processor, its preferable for the scheduler to pack to the lowest core. However there is no benefit of moving a thread between two thread groups of the same core. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214180720.310852-5-srikar@linux.vnet.ibm.com |
||
|
Srikar Dronamraju
|
fd535a858e |
powerpc/smp: Add __ro_after_init attribute
There are some variables that are only updated at boot time. So add __ro_after_init attribute to such variables Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214180720.310852-4-srikar@linux.vnet.ibm.com |
||
|
Srikar Dronamraju
|
0e1c1986e0 |
powerpc/smp: Disable MC domain for shared processor
Like L2-cache info, coregroup information which is used to determine MC sched domains is only present on dedicated LPARs. i.e PowerVM doesn't export coregroup information for shared processor LPARs. Hence disable creating MC domains on shared LPAR Systems. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214180720.310852-3-srikar@linux.vnet.ibm.com |
||
|
Srikar Dronamraju
|
aa80c6343f |
powerpc/smp: Enable Asym packing for cores on shared processor
If there are shared processor LPARs, underlying Hypervisor can have more virtual cores to handle than actual physical cores. Starting with Power 9, a big core (aka SMT8 core) has 2 nearly independent thread groups. On a shared processors LPARs, it helps to pack threads to lesser number of cores so that the overall system performance and utilization improves. PowerVM schedules at a big core level. Hence packing to fewer cores helps. Since each thread-group is independent, running threads on both the thread-groups of a SMT8 core, should have a minimal adverse impact in non over provisioned scenarios. These changes in this patchset will not affect in the over provisioned scenario. If there are more threads than SMT domains, then asym_packing will not kick-in For example: Lets says there are two 8-core Shared LPARs that are actually sharing a 8 Core shared physical pool, each running 8 threads each. Then Consolidating 8 threads to 4 cores on each LPAR would help them to perform better. This is because each of the LPAR will get 100% time to run applications and there will no switching required by the Hypervisor. To achieve this, enable SD_ASYM_PACKING flag at CACHE, MC and DIE level when the system is running in shared processor mode and has big cores. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214180720.310852-2-srikar@linux.vnet.ibm.com |