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v7.2-rc1
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Author SHA1 Message Date
Linus Torvalds
e7c93451ee arm64 fixes for -rc1 
- Fix randconfig build failure due to missing include of asm/insn.h.
 
 - Reject unaligned hardware watchpoints which were silently being
   truncated.
 
 - Fix crash in KVM initialisation by deferring the read-only remapping
   of the kernel data and bss sections.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Small crop of arm64 fixes for -rc1. We've got a build fix for a new
  randconfig permutation, a fix for a long-standing truncation issue
  with hardware watchpoints and a KVM initialisation fix for the newly
  merged remapping of the kernel data and bss sections:

   - Fix randconfig build failure due to missing include of asm/insn.h

   - Reject unaligned hardware watchpoints which were silently being
     truncated

   - Fix crash in KVM initialisation by deferring the read-only
     remapping of the kernel data and bss sections"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: Defer read-only remap of data/bss linear alias
  arm64/hw_breakpoint: reject unaligned watchpoints that would truncate BAS
  arm64: static_call: include asm/insns.h
 2026-06-26 08:40:35 -07:00
Ard Biesheuvel
36fa5ffa60 arm64: mm: Defer read-only remap of data/bss linear alias 
Since commit

  f2ba877402 ("arm64: mm: Map the kernel data/bss read-only in the linear map")

the linear alias of the .data and .bss regions is remapped read-only
early during the boot. (Note that a subsequent patch to unmap this
region entirely was reverted just before the v7.2 merge window, and will
be brought back in an improved form for the v7.3 cycle)

Fuad reports that in some cases, the KVM init code may apply relocations
to variables that reside in .data, and does so via the linear map. This
means that remapping .data read-only beforehand is a bad idea, and
results in an early boot crash.

These variables in .data are only present when CONFIG_NVHE_EL2_DEBUG or
CONFIG_NVHE_EL2_TRACING are enabled, which is why it was not spotted in
testing.

So move the remap to mark_rodata_ro(), which is a reasonable place to
put this, and ensures that it happens much later during the boot. It
also means that rodata=off is now taken into account, and so the linear
alias will remain writable in that case.

Fixes: f2ba877402 ("arm64: mm: Map the kernel data/bss read-only in the linear map")
Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Tested-by: Fuad Tabba <fuad.tabba@linux.dev>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
 2026-06-24 14:52:14 +01:00
Linus Torvalds
364f4a55c6 USB/Thunderbolt driver changes for 7.2-rc1 
Here is the big set of USB and Thunderbolt driver changes for 7.2-rc1.
 
 Lots of little stuff in here, major highlights include:
   - USB4STREAM support for Thunderbolt devices.  A new way to send "raw"
     data very quickly over a USB4 connection to another system directly.
   - Other thunderbolt updates and changes to make the stream code work
   - xhci driver updates and additions
   - typec driver updates and additions
   - usb gadget driver updates and fixes for reported issues
   - zh_CN documentation translation of the USB documentation
   - usb-serial driver updates
   - dts cleanups for some USB platforms
   - other minor USB driver updates and tweaks
 
 All of these have been in linux-next for over a week with no reported
 issues, most of them for many many weeks.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB and Thunderbolt driver updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver changes for 7.2-rc1.

  Lots of little stuff in here, major highlights include:

   - USB4STREAM support for Thunderbolt devices. A new way to send "raw"
     data very quickly over a USB4 connection to another system directly

   - Other thunderbolt updates and changes to make the stream code work

   - xhci driver updates and additions

   - typec driver updates and additions

   - usb gadget driver updates and fixes for reported issues

   - zh_CN documentation translation of the USB documentation

   - usb-serial driver updates

   - dts cleanups for some USB platforms

   - other minor USB driver updates and tweaks

  All of these have been in linux-next for over a week with no reported
  issues, most of them for many many weeks"

* tag 'usb-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (131 commits)
  usb: ucsi: huawei_gaokun: support mode switching
  thunderbolt: debugfs: Fix sideband write size check
  thunderbolt: debugfs: Fix margining error counter buffer leak
  usb: host: xhci-rcar: Split R-Car Gen2 and Gen3 .plat_start() handling
  usb: host: xhci-rcar: Remove SET_XHCI_PLAT_PRIV_FOR_RCAR() macro
  usb: xhci: allocate internal DCBAA mirror dynamically
  usb: xhci: allocate DCBAA based on host controller max slots
  usb: xhci: refactor DCBAA struct
  xhci: Prevent queuing new commands if xhci is inaccessible
  xhci: dbc: detect and recover hung DbC during enumeraton
  xhci: dbc: add timestamps to DbC state changes in a new helper.
  xhci: dbc: add helper to set and clear DbC DCE enable bit
  xhci: dbc: serialize enabling and disabling dbc
  xhci: dbc: Fix sysfs ABI Documentation for xhci dbc states
  usb: xhci: Improve Soft Retries after short transfers
  usb: xhci: Remove isochronous URB_SHORT_NOT_OK handling
  usb: xhci: Remove skip_isoc_td()
  usb: xhci: Simplify xhci_quiesce()
  usb: xhci: remove legacy 'num_trbs_free' tracking
  usb: xhci: fix typo in xhci_set_port_power() comment
  ...
 2026-06-22 12:09:47 -07:00
Linus Torvalds
8a500fd093 TTY / Serial driver update for 7.2-rc1 
Here is the big set of TTY and Serial driver updates for 7.2-rc1.
 Overall we end up removing more code than added, due to an obsolete
 synclink_gt driver being removed from the tree, always a nice thing to
 see happen.
 
 Other than that driver removal, major things included in here are:
   - max310x serial driver updates and fixes
   - 8250 driver updates and rework in places to make it more "modern"
   - dts file updates
   - serial driver core tweaks and updates
   - vt code cleanups
   - vc_screen crash fixes
   - other minor driver updates and cleanups
 
 All of these have been in linux-next for well over a week with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver updates from Greg KH:
 "Here is the big set of TTY and Serial driver updates for 7.2-rc1.

  Overall we end up removing more code than added, due to an obsolete
  synclink_gt driver being removed from the tree, always a nice thing to
  see happen.

  Other than that driver removal, major things included in here are:

   - max310x serial driver updates and fixes

   - 8250 driver updates and rework in places to make it more "modern"

   - dts file updates

   - serial driver core tweaks and updates

   - vt code cleanups

   - vc_screen crash fixes

   - other minor driver updates and cleanups

  All of these have been in linux-next for well over a week with no
  reported issues"

* tag 'tty-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (49 commits)
  serial: 8250_pci: Don't specify conflicting values to pci_device_id members
  vc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write
  serial: qcom_geni: Fix RX DMA stall when SE_DMA_RX_LEN_IN is zero
  vt: merge ucs_is_zero_width()/ucs_is_double_width() into ucs_get_width()
  serial: 8250: fix possible ISR soft lockup
  dt-bindings: serial: rs485: remove deprecated .txt binding stub
  serial: qcom-geni: trace: Add tracepoint support for Qualcomm GENI serial
  tty: serial: Use named initializers for arrays of i2c_device_data
  serial: 8250_dw: remove clock-notifier infrastructure
  serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails
  amba/serial: amba-pl011: Bring back zx29 UART support
  serial: 8250: Add support for console flow control
  serial: 8250: Check LSR timeout on console flow control
  serial: 8250: Set cons_flow on port registration
  tty: serial: 8250: protect against NULL uart->port.dev in register
  arm64: dts: add support for A9 based Amlogic BY401
  dt-bindings: arm: amlogic: add A311Y3 support
  serial: max310x: fix compile errors if CONFIG_SPI_MASTER is disabled
  serial: qcom-geni: Avoid probing debug console UART without console support
  serial: max310x: add comments for PLL limits
  ...
 2026-06-22 11:51:49 -07:00
Linus Torvalds
2e05544060 mm.git review status for mm-hotfixes-stable..mm-nonmm-stable 
Everything:
 
 Total patches:       108
 Reviews/patch:       0.84
 Reviewed rate:       75%
 
 Patch series in this merge:
 
 - The 2 patch series "taskstats: fix TGID dead-thread stat retention"
   from Yiyang Chen fixes a taskstats TGID aggregation bug where fields
   added in the TGID query path were not preserved after thread exit, and
   adds a kselftest covering the regression.
 
 - The 2 patch series "lib/tests: string_helpers: Slight improvements"
   from Andy Shevchenko improves lib/tests/string_helpers_kunit.c a little.
 
 - The 2 patch series "lib/base64: decode fixes" from Josh Law addreesses
   minor issues in lib/base64.c.
 
 - The 3 patch series "selftests/filelock: Make output more kselftestish"
   from Mark Brown makes the output from the ofdlocks test a bit easier for
   tooling to work with, and also ignores the generated file.
 
 - The 3 patch series "uaccess: unify inline vs outline
   copy_{from,to}_user() selection" from Yury Norov simplifies the usercopy
   code by removing the selectability of inlining copy_{from,to}_user().
 
 - The 5 patch series "ocfs2: validate inline xattr header consumers"
   from ZhengYuan Huang fixes a number of possible issues in the ocfs2
   xattr code.
 
 - The 8 patch series "lib and lib/cmdline enhancements" from Dmitry
   Antipov provides additional robustness checking in the cmdline handling
   code and its in-kernel testing and selftests.
 
 - The 18 patch series "cleanup the RAID6 P/Q library" from Christoph
   Hellwig cleans up the RAID6 P/Q library to match the recent updates to
   the RAID 5 XOR library and other CRC/crypto libraries.
 
 - The 3 patch series "ocfs2: harden inode validators against forged
   metadata" from Michael Bommarito adds three structural checks to OCFS2
   dinode validation so malformed on-disk fields are rejected before
   ocfs2_populate_inode() copies them into the in-core inode.
 
 - The 2 patch series "lib/raid: replace __get_free_pages() call with
   kmalloc()" from Mike Rapoport cleans up the lib/raid code by using
   kmalloc() in more places.
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Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)

   Fix a taskstats TGID aggregation bug where fields added in the TGID
   query path were not preserved after thread exit, and adds a kselftest
   covering the regression.

 - "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)

   Improve lib/tests/string_helpers_kunit.c a little

 - "lib/base64: decode fixes" (Josh Law)

   Address minor issues in lib/base64.c

 - "selftests/filelock: Make output more kselftestish" (Mark Brown)

   Make the output from the ofdlocks test a bit easier for tooling to
   work with. Also ignore the generated file

 - "uaccess: unify inline vs outline copy_{from,to}_user() selection"
   (Yury Norov)

   Simplify the usercopy code by removing the selectability of inlining
   copy_{from,to}_user().

 - "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)

   Fix a number of possible issues in the ocfs2 xattr code

 - "lib and lib/cmdline enhancements" (Dmitry Antipov)

   Provide additional robustness checking in the cmdline handling code
   and its in-kernel testing and selftests

 - "cleanup the RAID6 P/Q library" (Christoph Hellwig)

   Clean up the RAID6 P/Q library to match the recent updates to the
   RAID 5 XOR library and other CRC/crypto libraries

 - "ocfs2: harden inode validators against forged metadata" (Michael
   Bommarito)

   Add three structural checks to OCFS2 dinode validation so malformed
   on-disk fields are rejected before ocfs2_populate_inode() copies them
   into the in-core inode

 - "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
   Rapoport)

   Clean up the lib/raid code by using kmalloc() in more places

* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
  ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
  lib: interval_tree_test: validate benchmark parameters
  ocfs2: avoid moving extents to occupied clusters
  treewide: fix transposed "sign" typos and update spelling.txt
  ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
  fat: reject BPB volumes whose data area starts beyond total sectors
  selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
  lib/test_firmware: allocate the configured into_buf size
  fs: efs: remove unneeded debug prints
  checkpatch: cuppress warnings when Reported-by: is followed by Link:
  MAINTAINERS: add Alexander as a kcov reviewer
  mailmap: update Alexander Sverdlin's Email addresses
  fs: fat: inode: replace sprintf() with scnprintf()
  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
  ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
  ocfs2/dlm: require a ref for locking_state debugfs open
  ocfs2: reject FITRIM ranges shorter than a cluster
  ocfs2: validate fast symlink target during inode read
  ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
  ...
 2026-06-21 13:20:19 -07:00
Linus Torvalds
a552c81ff4 mm.git review status for mm-hotfixes-stable..mm-stable 
Everything:
 
 Total patches:       321
 Reviews/patch:       1.52
 Reviewed rate:       68%
 
 Excluding DAMON:
 
 Total patches:       227
 Reviews/patch:       2.07
 Reviewed rate:       90%
 
 Excluding DAMON and selftests:
 
 Total patches:       203
 Reviews/patch:       2.14
 Reviewed rate:       91%
 
 Patchsets in this merge:
 
 - The 2 patch series "selftests/mm: clean up build output and verbosity"
   from Li Wang removes some noise from the MM selftests build out.
 
 - The 3 patch series "mm: Free contiguous order-0 pages efficiently"
   from Ryan Roberts speeds up the freeing of a batch of 0-order pages by
   first scanning them for coalescing opportunities.  This is applicable to
   vfree() and to the releasing of frozen pages.
 
 - The 11 patch series "mm/damon: introduce DAMOS failed region quota
   charge ratio" from SeongJae Park addresses a DAMOS usability issue: The
   DAMOS quota often exhausts prematurely because it charges for all memory
   attempted, causing slow and inconsistent performance when actions fail
   on unreclaimable memory.
 
   To fix this, a new feature lets users set a smaller, flexible quota
   charge ratio (via a numerator and denominator) for failed regions.
   Since failed actions cause less overhead, reducing their quota cost
   ensures more predictable and efficient DAMOS processing
 
 - The 8 patch series "selftests/cgroup: improve zswap tests robustness
   and support large page sizes" from Li Wang fixes various spurious
   failures and improves the overall robustness of the cgroup zswap
   selftests.
 
 - The 3 patch series "fix MAP_DROPPABLE not supported errno" from
   Anthony Yznaga fixes an issue in the mlock selftests on arm32.
 
 - The 2 patch series "mm: huge_memory: clean up defrag sysfs with
   shared" from Breno Leitao does some maintenance work in the huge_memory
   code.
 
 - The 3 patch series "treewide: fixup gfp_t printks" from Brendan
   Jackman uses the special vprintf() gfp_t conversion in various places.
 
 - The 6 patch series "mm: Fix vmemmap optimization accounting and
   initialization" from Muchun Song fixes several bugs in the vmemmap
   optimization, mainly around incorrect page accounting and memmap
   initialization in the DAX and memory hotplug paths.  It also fixes
   pageblock migratetype initialization and struct page initialization for
   ZONE_DEVICE compound pages.
 
 - The 4 patch series "mm/damon: repost non-hotfix reviewed patches in
   damon/next tree" from is a sprinkle of unrelated minor bugfixes for
   DAMON.
 
 - The 3 patch series "mm: remove page_mapped()" from David Hildenbrand
   remove this function from the tree, replacing it with folio_mapped().
 
 - The 10 patch series "mm/damon: let DAMON be paused and resumed" from
   SeongJae Park permits DAMON to be paused and resumed without losing its
   current state.
 
 - The 3 patch series "kasan: hw_tags: Disable tagging for stack and
   page-tables" from Muhammad Usama Anjum simplifies and speeds up kasan by
   removing its ineffective tagging of stacks and page tables.
 
 - The 7 patch series "mm/damon/reclaim,lru_sort: monitor all system rams
   by default" from SeongJae Park simplifies deployment on diverse hardware
   like NUMA systems by updating DAMON_RECLAIM and DAMON_LRU_SORT to
   automatically monitor the physical address range covering all System RAM
   areas by default, replacing the overly restrictive behavior that only
   targeted the single largest memory block to save on negligible overhead.
 
 - The 2 patch series "mm/damon/sysfs: document filters/ directory as
   deprecated" from SeongJae Park updates some DAMON docs.
 
 - The 8 patch series "mm: use spinlock guards for zone lock" from Dmitry
   Ilvokhin switches zone->lock handling over to using the guard()
   mechanisms.
 
 - The 2 patch series "mm/filemap: tighten mmap_miss hit accounting" from
   fujunjie fixes a flaw where the mmap_miss counter over-credited page
   cache hits during fault-arounds and page-fault retries.  This results in
   significant reduction of redundant synchronous mmap readahead I/O,
   drastically cutting down execution time and gigabytes read for sparse
   random or strided memory access workloads.
 
 - The 2 patch series "selftests/cgroup: Fix false positive failures in
   test_percpu_basic" from Li Wang fixes a couple of false-positives in the
   cgroup kmem selftests.
 
 - The 2 patch series "mm/damon/reclaim: support monitoring intervals
   auto-tuning" from SeongJae Park adds a new parameter to DAMON permitting
   DAMON_RECLAIM to automatically tune DAMON's sampling and aggregation
   intervals.
 
 - The 2 patch series "mm/damon/stat: add kdamond_pid parameter" from
   SeongJae Park chnges DAMON_STAT to provide the pid of its kdamond.
 
 - The 2 patch series "mm/kmemleak: dedupe verbose scan output" from
   Breno Leitao removes large amounts of duplicated backtraces from the
   verbose-mode kmemleak output.
 
 - The 8 patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1)"
   from David Hildenbrand reduces our use of CONFIG_HAVE_BOOTMEM_INFO_NODE,
   with a view to removing it entirely in a later series.
 
 - The 2 patch series "mm/damon: validate min_region_size to be power of
   2" from Liew Rui Yan prevents users from passing a non-power-of-2 value
   of `addr_unit', as this later results in undesirable behavior.
 
 - The 2 patch series "mm: document read_pages and simplify usage" from
   Frederick Mayle does as claimed.
 
 - The 3 patch series "tools/mm/page-types: Fix misc bugs" from Ye Liu
   fixes three issues in tools/mm/page-types.c.
 
 - The 4 patch series "mm: misc cleanups from __GFP_UNMAPPED series" from
   Brendan Jackman implements several cleanups in the page allocator and
   related code.
 
 - The 12 patch series "mm, swap: swap table phase IV: unify allocation"
   from Kairui Song unifies the allocation and charging of anon and shmem
   swap in folios, provides better synchronization, consolidates the
   metadata management, hence dropping the static array and map, and
   improves performance.
 
 - The 28 patch series "mm/damon: introduce data attributes monitoring"
   from SeongJae Park extends DAMON for monitoring general data attributes
   other than accesses.
 
 - The 5 patch series "mm/vmalloc: free unused pages on vrealloc()
   shrink" from Shivam Kalra implements the TODO in vrealloc() to unmap and
   free unused pages when shrinking across a page boundary.
 
 - The 3 patch series "mm/damon: documentation and comment fixes" from
   niecheng does as advertised.
 
 - The 3 patch series "remove mmap_action success, error hooks" from
   Lorenzo Stoakes eliminates custom hooks from mmap_action by removing the
   problematic success_hook which allowed drivers to improperly access
   uninitialized VMAs.  It replaces the error_hook with a simple error-code
   field and updates the memory char driver accordingly.
 
 - The 14 patch series "mm/damon: minor improvements for code readability
   and tests" from SeongJae Park implements minor improvements in code
   readability and tests for DAMON.
 
 - The 2 patch series "mm/damon: fix macro arguments and clarify quota
   goals doc" from Maksym Shcherba does those things.
 
 - The 2 patch series "userfaultfd: merge fs/userfaultfd.c into
   mm/userfaultfd.c" from Mike Rapoport performs that code movement.
 
 - The 15 patch series "mm/mglru: improve reclaim loop and dirty folio"
   from Kairui Song and others cleans up and slightly improves MGLRU's
   reclaim loop and dirty writeback handling.  Large performance
   improvements are measured.
 
 - The 3 patch series "use vma locks for proc/pid/{smaps|numa_maps}
   reads" from Suren Baghdasaryan uses per-vma locks when reading
   /proc/pid/smaps and /proc/pid/numa_maps similar to reduce contention on
   central mmap_lock.
 
 - The 2 patch series "refactors thpsize_shmem_enabled_store() and
   thpsize_shmem_enabled_show()" from Ran Xiaokai provides some cleanup
   work in the THP code.
 
 - The 2 patch series "selftests/memfd: fix compilation warnings" from
   Konstantin Khorenko fixes a few build glitches in the memfd selftest
   code.
 
 - The 4 patch series "memcg: shrink obj_stock_pcp and cache multiple
   objcgs" from Shakeel Butt resolves a 68% performance regression caused
   by NUMA-node cache thrashing around struct obj_stock_pcp by shrinking
   its existing fields and expanding it into a multi-slot array that caches
   up to five obj_cgroup pointers per CPU, allowing per-node variants of
   the same memcg to coexist within a single 64-byte cache line.
 
 - The 2 patch series "zram: writeback fixes" from Sergey Senozhatsky
   addresses a couple of unrelated zram writeback issues.
 
 - The 9 patch series "mm: switch THP shrinker to list_lru" from Johannes
   Weiner resolves NUMA-awareness issues and streamlines callsite
   interaction by refactoring and extending the list_lru API to completely
   replace the complex, open-coded deferred split queue for Transparent
   Huge Pages (THPs).
 
 - The 2 patch series "mm: improve large folio readahead for exec memory"
   from Usama Arif improves large-folio readahead on systems like 64K-page
   arm64 by preventing the mmap_miss check from permanently disabling
   target-oriented VM_EXEC readahead, and by generalizing the
   force_thp_readahead gate to support mappings with any usefully large
   maximum folio order under the cache cap.
 
 - The 6 patch series "userfaultfd/pagemap: pre-existing fixes" from
   Kiryl Shutsemau fixes a bunch of minor issues in the
   userfaultfd/pagemap, all of which were flagged by Sashiko review of
   proposed new material.
 
 - The 5 patch series "mm/sparse-vmemmap: Provide generic
   vmemmap_set_pmd() and vmemmap_check_pmd()" from Muchun Song provides
   generic versions of these two functions so the four arch-specific
   implementations can be removed.
 
 - The 2 patch series "mm/swap, PM: hibernate: fix swapoff race in
   uswsusp by pinning swap device" from Youngjun Park addresses a
   uswsusp-vs-swapoff race and reduces the swap device reference
   taking/releasing frequency.
 
 - The 2 patch series "mm/hmm: A fix and a selftest" from Dev Jain does
   as claimed.
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Merge tag 'mm-stable-2026-06-18-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - "selftests/mm: clean up build output and verbosity" (Li Wang)

   Remove some noise from the MM selftests build

 - "mm: Free contiguous order-0 pages efficiently" (Ryan Roberts)

   Speed up the freeing of a batch of 0-order pages by first scanning
   them for coalescing opportunities. This is applicable to vfree() and
   to the releasing of frozen pages

 - "mm/damon: introduce DAMOS failed region quota charge ratio"
   (SeongJae Park)

   Address a DAMOS usability issue: The DAMOS quota often exhausts
   prematurely because it charges for all memory attempted, causing slow
   and inconsistent performance when actions fail on unreclaimable
   memory.

   To fix this, a new feature lets users set a smaller, flexible quota
   charge ratio (via a numerator and denominator) for failed regions.
   Since failed actions cause less overhead, reducing their quota cost
   ensures more predictable and efficient DAMOS processing

 - "selftests/cgroup: improve zswap tests robustness and support large
   page sizes" (Li Wang)

   Fix various spurious failures and improves the overall robustness of
   the cgroup zswap selftests

 - "fix MAP_DROPPABLE not supported errno" (Anthony Yznaga)

   Fix an issue in the mlock selftests on arm32

 - "mm: huge_memory: clean up defrag sysfs with shared" (Breno Leitao)

   Some maintenance work in the huge_memory code

 - "treewide: fixup gfp_t printks" (Brendan Jackman)

   Use the special vprintf() gfp_t conversion in various places

 - "mm: Fix vmemmap optimization accounting and initialization" (Muchun
   Song)

   Fix several bugs in the vmemmap optimization, mainly around incorrect
   page accounting and memmap initialization in the DAX and memory
   hotplug paths. It also fixes pageblock migratetype initialization and
   struct page initialization for ZONE_DEVICE compound pages

 - "mm/damon: repost non-hotfix reviewed patches in damon/next tree"

   A sprinkle of unrelated minor bugfixes for DAMON

 - "mm: remove page_mapped()" (David Hildenbrand)

   Remove this function from the tree, replacing it with folio_mapped()

 - "mm/damon: let DAMON be paused and resumed" (SeongJae Park)

   Allow DAMON to be paused and resumed without losing its current state

 - "kasan: hw_tags: Disable tagging for stack and page-tables" (Muhammad
   Usama Anjum)

   Simplify and speed up kasan by removing its ineffective tagging of
   stacks and page tables

 - "mm/damon/reclaim,lru_sort: monitor all system rams by default"
   (SeongJae Park)

   Simplify deployment on diverse hardware like NUMA systems by updating
   DAMON_RECLAIM and DAMON_LRU_SORT to automatically monitor the
   physical address range covering all System RAM areas by default,
   replacing the overly restrictive behavior that only targeted the
   single largest memory block to save on negligible overhead

 - "mm/damon/sysfs: document filters/ directory as deprecated" (SeongJae
   Park)

   Update some DAMON docs

 - "mm: use spinlock guards for zone lock" (Dmitry Ilvokhin)

   Switch zone->lock handling over to using the guard() mechanisms

 - "mm/filemap: tighten mmap_miss hit accounting" (fujunjie)

   Fix a flaw where the mmap_miss counter over-credited page cache hits
   during fault-arounds and page-fault retries. This results in
   significant reduction of redundant synchronous mmap readahead I/O,
   drastically cutting down execution time and gigabytes read for sparse
   random or strided memory access workloads

 - "selftests/cgroup: Fix false positive failures in test_percpu_basic"
   (Li Wang)

   Fix a couple of false-positives in the cgroup kmem selftests

 - "mm/damon/reclaim: support monitoring intervals auto-tuning"
   (SeongJae Park)

   Add a new parameter to DAMON permitting DAMON_RECLAIM to
   automatically tune DAMON's sampling and aggregation intervals

 - "mm/damon/stat: add kdamond_pid parameter" (SeongJae Park)

   Change DAMON_STAT to provide the pid of its kdamond

 - "mm/kmemleak: dedupe verbose scan output" (Breno Leitao)

   Remove large amounts of duplicated backtraces from the verbose-mode
   kmemleak output

 - "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1)" (David
   Hildenbrand)

   Reduce our use of CONFIG_HAVE_BOOTMEM_INFO_NODE, with a view to
   removing it entirely in a later series

 - "mm/damon: validate min_region_size to be power of 2" (Liew Rui Yan)

   Prevent users from passing a non-power-of-2 value of `addr_unit', as
   this later results in undesirable behavior

 - "mm: document read_pages and simplify usage" (Frederick Mayle)

 - "tools/mm/page-types: Fix misc bugs" (Ye Liu)

   Fix three issues in tools/mm/page-types.c

 - "mm: misc cleanups from __GFP_UNMAPPED series" (Brendan Jackman)

   Implement several cleanups in the page allocator and related code

 - "mm, swap: swap table phase IV: unify allocation" (Kairui Song)

   Unify the allocation and charging of anon and shmem swap in folios,
   provides better synchronization, consolidates the metadata
   management, hence dropping the static array and map, and improves
   performance

 - "mm/damon: introduce data attributes monitoring" (SeongJae Park(

   Extend DAMON to monitor general data attributes other than accesses

 - "mm/vmalloc: free unused pages on vrealloc() shrink" (Shivam Kalra)

   Implement the TODO in vrealloc() to unmap and free unused pages when
   shrinking across a page boundary

 - "mm/damon: documentation and comment fixes" (niecheng)

 - "remove mmap_action success, error hooks" (Lorenzo Stoakes)

   Eliminate custom hooks from mmap_action by removing the problematic
   success_hook which allowed drivers to improperly access uninitialized
   VMAs. It replaces the error_hook with a simple error-code field and
   updates the memory char driver accordingly

 - "mm/damon: minor improvements for code readability and tests"
   (SeongJae Park)

 - "mm/damon: fix macro arguments and clarify quota goals doc" (Maksym
   Shcherba)

 - "userfaultfd: merge fs/userfaultfd.c into mm/userfaultfd.c" (Mike
   Rapoport)

 - "mm/mglru: improve reclaim loop and dirty folio" (Kairui Song and
   others)

   Clean up and slightly improves MGLRU's reclaim loop and dirty
   writeback handling. Large performance improvements are measured

 - "use vma locks for proc/pid/{smaps|numa_maps} reads" (Suren
   Baghdasaryan)

   Use per-vma locks when reading /proc/pid/smaps and numa_maps similar
   to reduce contention on central mmap_lock

 - "refactors thpsize_shmem_enabled_store() and thpsize_shmem_enabled_show()"
   (Ran Xiaokai)

   Some cleanup work in the THP code

 - "selftests/memfd: fix compilation warnings" (Konstantin Khorenko)

   Fix a few build glitches in the memfd selftest code.

 - "memcg: shrink obj_stock_pcp and cache multiple objcgs" (Shakeel
   Butt)

   Resolve a 68% performance regression caused by NUMA-node cache
   thrashing around struct obj_stock_pcp by shrinking its existing
   fields and expanding it into a multi-slot array that caches up to
   five obj_cgroup pointers per CPU, allowing per-node variants of the
   same memcg to coexist within a single 64-byte cache line.

 - "zram: writeback fixes" (Sergey Senozhatsky)

   address a couple of unrelated zram writeback issues

 - "mm: switch THP shrinker to list_lru" (Johannes Weiner)

   Resolve NUMA-awareness issues and streamlines callsite interaction by
   refactoring and extending the list_lru API to completely replace the
   complex, open-coded deferred split queue for Transparent Huge Pages

 - "mm: improve large folio readahead for exec memory" (Usama Arif)

   Improve large-folio readahead on systems like 64K-page arm64 by
   preventing the mmap_miss check from permanently disabling
   target-oriented VM_EXEC readahead, and by generalizing the
   force_thp_readahead gate to support mappings with any usefully large
   maximum folio order under the cache cap.

 - "userfaultfd/pagemap: pre-existing fixes" (Kiryl Shutsemau)

   Fix a bunch of minor issues in the userfaultfd/pagemap, all of which
   were flagged by Sashiko review of proposed new material

 - "mm/sparse-vmemmap: Provide generic vmemmap_set_pmd() and
   vmemmap_check_pmd()" (Muchun Song)

   Provide generic versions of these two functions so the four
   arch-specific implementations can be removed.

 - "mm/swap, PM: hibernate: fix swapoff race in uswsusp by pinning swap
   device" (Youngjun Park)

   Address a uswsusp-vs-swapoff race and reduces the swap device
   reference taking/releasing frequency.

 - "mm/hmm: A fix and a selftest" (Dev Jain)

* tag 'mm-stable-2026-06-18-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits)
  selftests/mm/hmm-tests: test pagemap reads of PMD device-private entries
  fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  lib/test_hmm: check alloc_page_vma() return value and handle OOM
  mm/compaction: cap compact_gap() at COMPACT_CLUSTER_MAX
  mm/swap: remove redundant swap device reference in alloc/free
  mm/swap, PM: hibernate: fix swapoff race in uswsusp by pinning swap device
  mm/filemap: use folio_next_index() for start
  vmalloc: fix NULL pointer dereference in is_vm_area_hugepages()
  sparc/mm: drop vmemmap_check_pmd helper and use generic code
  loongarch/mm: drop vmemmap_check_pmd helper and use generic code
  riscv/mm: drop vmemmap_pmd helpers and use generic code
  arm64/mm: drop vmemmap_pmd helpers and use generic code
  mm/sparse-vmemmap: provide generic vmemmap_set_pmd() and vmemmap_check_pmd()
  rust: page: mark Page::nid as inline
  userfaultfd: build __VMA_UFFD_FLAGS from config-gated masks
  userfaultfd: gate must_wait writability check on pte_present()
  mm/huge_memory: preserve pmd_swp_uffd_wp on device-private PMD downgrade
  fs/proc/task_mmu: fix hugetlb self-deadlock in pagemap_scan_pte_hole()
  fs/proc/task_mmu: use huge_page_size() in pagemap_scan_hugetlb_entry()
  fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race
  ...
 2026-06-19 10:14:34 -07:00
Breno Leitao
4cc70f7585 arm64/hw_breakpoint: reject unaligned watchpoints that would truncate BAS 
hw_breakpoint_arch_parse() positions the BAS bit pattern in
hw->ctrl.len with

	offset = hw->address & alignment_mask;	/* 0..7 */
	hw->ctrl.len <<= offset;

ctrl.len is an 8-bit bitfield (struct arch_hw_breakpoint_ctrl::len is
u32 :8), so the shift silently drops any bits past bit 7.  For
non-compat AArch64 watchpoints the offset is unbounded relative to
ctrl.len: a perf_event_open(PERF_TYPE_BREAKPOINT) caller asking for
HW_BREAKPOINT_W with bp_addr=page+1 and bp_len=HW_BREAKPOINT_LEN_8
ends up with 0xff << 1 = 0x1fe, stored as 0xfe.  The kernel programs
WCR.BAS=0xfe and the hardware watches bytes [1..7] instead of the
requested [1..8] -- the eighth byte is silently dropped.  The
syscall still returns success, leaving userspace to discover the
gap by empirical probing.

The same class affects HW_BREAKPOINT_LEN_{2,4} when offset pushes the
high BAS bit past bit 7 (e.g. LEN_4 with offset=5 yields 0xe0
instead of 0x1e0).  No memory-safety impact -- the value is masked
into 8 bits before encoding -- but debuggers and perf users observe
missed events on bytes they thought they were watching.

The AArch32 branch immediately above already rejects unrepresentable
(offset, len) combinations via an explicit switch.  Mirror that for
the non-compat branch by checking that the shifted pattern fits in
the BAS field, returning -EINVAL when it does not.

GDB and similar debuggers are unaffected by the stricter check.
aarch64_linux_set_debug_regs() already treats EINVAL on
NT_ARM_HW_WATCH as a downgrade signal: it clears
kernel_supports_any_contiguous_range, calls aarch64_downgrade_regs()
to round the BAS up to a legacy 0x01/03/0f/ff mask with an aligned
base, and retries -- the same fallback path that PR-20207 introduced.
The new -EINVAL is therefore reachable only from a raw
perf_event_open() that pairs an unaligned base with an oversized
bp_len, which is precisely the bug.

Reproducer:

  struct perf_event_attr a = {
      .type = PERF_TYPE_BREAKPOINT, .size = sizeof(a),
      .bp_type = HW_BREAKPOINT_W,
      .bp_addr = (uintptr_t)(buf + 1),
      .bp_len = HW_BREAKPOINT_LEN_8,
      .exclude_kernel = 1, .exclude_hv = 1,
  };
  int fd = perf_event_open(&a, 0, -1, -1, 0);
  /* before this fix: succeeds, watches 7 bytes (buf+1..buf+7)   */
  /* after  this fix: fails with EINVAL                          */

Fixes: b08fb180bb ("arm64: Allow hw watchpoint at varied offset from base address")
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Will Deacon <will@kernel.org>
 2026-06-19 17:04:57 +01:00
Linus Torvalds
c98d767b34 Arm: 
"This is a bit of an odd merge window on the KVM/arm64 front. There is
 absolutely no new feature in the pull request. It is purely fixes,
 because it is simply becoming too hard to review new stuff when so
 many AI-fuelled fixes hit the list".
 
 - Significant cleanup of the vgic-v5 PPI support which was merged in
   7.1. This makes the code more maintainable, and squashes a couple
   of bugs in the meantime.
 
 - Set of fixes for the handling of the MMU in an NV context,
   particularly VNCR-triggered faults. S1POE support is fixed
   as well.
 
 - Large set of pKVM fixes, mostly addressing recurring issues
   around hypervisor tracking of donated pages in obscure cases
   where the donation could fail and leave things in a bizarre
   state.
 
 - Fixes for the so-called "lazy vgic init", which resulted in
   sleeping operations in non-preemptible sections. This turned
   out to be far more invasive than initially expected...
 
 - Reduce the overhead of L1/L2 context switch by not touching
   the FP registers.
 
 - Fix the way non-implemented page sizes are dealt with when
   a guest insist on using them for S2 translation.
 
 - The usual set of low-impact fixes and cleanups all over the map.
 
 Loongarch:
 
 - On a request for lazy FPU load, load all FPU state that the VM
   supports instead of enabling only the part (FPU, LSX or LASX)
   that caused the FPU load request.
 
 - Some enhancements about interrupt injection.
 
 - Some bug fixes and other small changes.
 
 RISC-V:
 
 - Batch G-stage TLB flushes for GPA range based page table updates
 
 - Convert HGEI line management to fully per-HART
 
 - Fix missing CSR dirty marking when FWFT state updated via ONE_REG
 
 - Fix stale FWFT feature exposure to Guest/VM
 
 - Speed up dirty logging write faults using MMU rwlock and atomic
   PTE updates using cmpxchg() for permission-only changes
 
 - Use flexible array for APLIC IRQ state
 
 - Use kvm_slot_dirty_track_enabled() for logging enable check on
   a memslot
 
 - Avoid skipping valid pages in kvm_riscv_gstage_wp_range()
 
 - Avoid skipping valid pages in kvm_riscv_gstage_unmap_range()
 
 - Use endian-specific __lelong for NACL shared memory
 
 S390:
 
 - KVM_PRE_FAULT_MEMORY support
 
 - Support for 2G hugepages
 
 - Support for the ASTFLEIE 2 facility
 
 - Support for fast inject using kvm_arch_set_irq_inatomic
 
 - Fix potential leak of uninitialized bytes
 
 - A few more misc gmap fixes.
 
 x86:
 
 - Generic support for the more granular permissions allowed by EPT,
   namely "read" (which was previously usurping the U bit) and
   separate execution bits for kernel and userspace.
 
 - Do not assume that all page tables start with U=1/W=1/NX=0 at the
   root, as AMD GMET needs to have U=0 at the root.
 
 - Introduce common assembly macros for use within Intel and AMD
   vendor-specific vmentry code.  This touches the SPEC_CTRL handling,
   which is now entirely done in assembly for Intel (by reusing the
   AMD code that already existed), and register save/restore which
   uses some macro magic to compute the offsets in the struct.  Both
   of these are preparatory changes for upcoming APX support.
 
 - Clean up KVM's register tracking and storage, primarily to prepare for
   APX support, which expands the maximum number of GPRs from 16 to 32.
 
 - Keep a single copy of the PDPTRs rather than two, since architecturally
   there is just one.
 
 - Handle EXIT_FASTPATH_EXIT_USERSPACE in vendor code to ensure vendor code
   gets a chance to handle things like reaping the PML buffer.
 
 - Update KVM's view of PV async enabling if and only if the MSR write fully
   succeeds.
 
 - Fix a variety of issues where the emulator doesn't honor guest-debug state,
   and clean up related code along the way.
 
 - Synthesize EPT Violation and #NPF "error code" bits when injecting faults
   into L1 that didn't originate in hardware (in which case the VMCS/VMCB
   doesn't hold relevant information).
 
 - Add support for virtualizing (well, emulating) AMD's flavor of CPL>0 CPUID
   faulting.
 
 - Clean up the GPR APIs so that KVM's use of "raw" is consistent, and fix a
   variety of minor bugs along the way.
 
 - Fix an OOB memory access due to not checking the VP ID when handling a
   Hyper-V PV TLB flush for L2.
 
 - Fix a bug in the mediated PMU's handling of fixed counters that allowed the
   guest to bypass the PMU event filter.
 
 - Allow userspace to return EAGAIN when handling SNP and TDX hypercalls, so
   the KVM can forward a "retry" status code to the guest, and reserve all
   unused error codes for future usage.
 
 - Overhaul the TDP MMU => S-EPT code to move as much S-EPT specific logic as
   possible into the TDX code, and to funnel (almost) all S-EPT updates into
   a single chokepoint.  The motivation is largely to prepare for upcoming
   Dynamic PAMT support, but the cleanups are nice to have on their own.
 
 - Plug a hole in shadow page table handling, where KVM fails to recursively
   zap nested EPT/NPT shadow page tables when the nested hypervisor tears
   down its own EPT/NPT page tables from the bottom up
 
 x86 (Intel):
 
 - Support for nested MBEC (Mode-Based Execute Control), see above in the
   generic section; also run with MBEC enabled even for non-nested mode.
 
 - Use the kernel's "enum pg_level" in the TDX APIs instead of the TDX-Module's
   level definitions (which are 0-based).
 
 - Rework the TDX memory APIs to not require/assume that guest memory is
   backed by "struct page" (in prepartion for guest_memfd hugepage support).
 
 - Fix a largely benign bug where KVM TDX would incorrectly state it could
   emulate several x2APIC MSRs.
 
 - Use the "safe" WRMSR API when proxying LBR MSR writes as the to-be-written
   value is guest controlled and completely unvalidated.
 
 x86 (AMD):
 
 - Support for nested GMET (Guest Mode Execution Trap), see above in the
   generic section; also run with GMET enabled even for non-nested mode.
 
 - Fixes and minor cleanups to GHCB handling, on top of the earlier work
   already merged into 7.1-rc.
 
 - Ensure KVM's copy of CR0 and CR3 are up-to-date prior to invoking
   fastpath handlers.
 
 - Add support for virtualizing gPAT (KVM previously just used L1's PAT when
   running L2).
 
 - Fix goofs where KVM mishandles side effects (e.g. single-step and PMC
   updates) when emulating VMRUN.
 
 - Fix a variety of bugs in AVIC's handling of x2APIC MSR interception, most
   notably where KVM didn't disable interception of IRR, ISR, and TMR regs.
 
 - Add support for virtualizing Host-Only/Guest-Only bits in the mediated PMU.
 
 - Don't advertise support for unusable VM types, and account for VM types
   that are disabled by firmware, e.g. to mitigate security vulnerabilities.
 
 - Rewrite the SEV {en,de}crypt debug ioctls as they were riddle with bugs and
   unnecessarily complicated, and add comprehensive tests.
 
 - Clean up and deduplicate the SEV page pinning code.
 
 - Fix minor goofs related to writing back CPUID information after firmware
   rejects a CPUID page for an SNP vCPU.
 
 Generic:
 
 - Rename invalidate_begin() to invalidate_start() throughout KVM to follow
   the kernel's nomenclature, e.g. for mmu_notifiers.
 
 - Use guard() to cleanup up various KVM+VFIO flows.
 
 - Minor cleanups.
 
 guest_memfd:
 
 - Return -EEXIST instead of -EINVAL if userspace attempts to bind a gmem
   range to multiple memslots, and fix the test that was supposed to ensure
   KVM returns -EEXIST.
 
 - Treat memslot binding offsets and sizes as unsigned values to fix a bug
   where KVM interprets a large "offset + size" as a negative value and allows
   a nonsensical offset.
 
 - Use the inode number instead of the page offset for the NUMA interleaving
   index to fix a bug where the effective index would jump by two for
   consecutive pages (the caller also adds in the page offset).
 
 Selftests:
 
 - Randomize the dirty log test's delay when reaping the bitmap on the first
   pass, as always waiting only 1ms hid a KVM RISC-V bug as the test reaped the
   bitmap before KVM could build up enough state to hit the bug.
 
 - A pile of one-off fixes and cleanups.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "arm64:

     This is a bit of an odd merge window on the KVM/arm64 front. There
     is absolutely no new feature in the pull request. It is purely
     fixes, because it is simply becoming too hard to review new stuff
     when so many AI-fuelled fixes hit the list.

   - Significant cleanup of the vgic-v5 PPI support which was merged in
     7.1. This makes the code more maintainable, and squashes a couple
     of bugs in the meantime

   - Set of fixes for the handling of the MMU in an NV context,
     particularly VNCR-triggered faults. S1POE support is fixed as well

   - Large set of pKVM fixes, mostly addressing recurring issues around
     hypervisor tracking of donated pages in obscure cases where the
     donation could fail and leave things in a bizarre state

   - Fixes for the so-called "lazy vgic init", which resulted in
     sleeping operations in non-preemptible sections. This turned out to
     be far more invasive than initially expected..

   - Reduce the overhead of L1/L2 context switch by not touching the FP
     registers

   - Fix the way non-implemented page sizes are dealt with when a guest
     insist on using them for S2 translation

   - The usual set of low-impact fixes and cleanups all over the map

  Loongarch:

   - On a request for lazy FPU load, load all FPU state that the VM
     supports instead of enabling only the part (FPU, LSX or LASX) that
     caused the FPU load request

   - Some enhancements about interrupt injection

   - Some bug fixes and other small changes

  RISC-V:

   - Batch G-stage TLB flushes for GPA range based page table updates

   - Convert HGEI line management to fully per-HART

   - Fix missing CSR dirty marking when FWFT state updated via ONE_REG

   - Fix stale FWFT feature exposure to Guest/VM

   - Speed up dirty logging write faults using MMU rwlock and atomic PTE
     updates using cmpxchg() for permission-only changes

   - Use flexible array for APLIC IRQ state

   - Use kvm_slot_dirty_track_enabled() for logging enable check on a
     memslot

   - Avoid skipping valid pages in kvm_riscv_gstage_wp_range()

   - Avoid skipping valid pages in kvm_riscv_gstage_unmap_range()

   - Use endian-specific __lelong for NACL shared memory

  S390:

   - KVM_PRE_FAULT_MEMORY support

   - Support for 2G hugepages

   - Support for the ASTFLEIE 2 facility

   - Support for fast inject using kvm_arch_set_irq_inatomic

   - Fix potential leak of uninitialized bytes

   - A few more misc gmap fixes

  x86:

   - Generic support for the more granular permissions allowed by EPT,
     namely "read" (which was previously usurping the U bit) and
     separate execution bits for kernel and userspace

   - Do not assume that all page tables start with U=1/W=1/NX=0 at the
     root, as AMD GMET needs to have U=0 at the root

   - Introduce common assembly macros for use within Intel and AMD
     vendor-specific vmentry code. This touches the SPEC_CTRL handling,
     which is now entirely done in assembly for Intel (by reusing the
     AMD code that already existed), and register save/restore which
     uses some macro magic to compute the offsets in the struct. Both of
     these are preparatory changes for upcoming APX support

   - Clean up KVM's register tracking and storage, primarily to prepare
     for APX support, which expands the maximum number of GPRs from 16
     to 32

   - Keep a single copy of the PDPTRs rather than two, since
     architecturally there is just one

   - Handle EXIT_FASTPATH_EXIT_USERSPACE in vendor code to ensure vendor
     code gets a chance to handle things like reaping the PML buffer

   - Update KVM's view of PV async enabling if and only if the MSR write
     fully succeeds

   - Fix a variety of issues where the emulator doesn't honor
     guest-debug state, and clean up related code along the way

   - Synthesize EPT Violation and #NPF "error code" bits when injecting
     faults into L1 that didn't originate in hardware (in which case the
     VMCS/VMCB doesn't hold relevant information)

   - Add support for virtualizing (well, emulating) AMD's flavor of
     CPL>0 CPUID faulting

   - Clean up the GPR APIs so that KVM's use of "raw" is consistent, and
     fix a variety of minor bugs along the way

   - Fix an OOB memory access due to not checking the VP ID when
     handling a Hyper-V PV TLB flush for L2

   - Fix a bug in the mediated PMU's handling of fixed counters that
     allowed the guest to bypass the PMU event filter

   - Allow userspace to return EAGAIN when handling SNP and TDX
     hypercalls, so the KVM can forward a "retry" status code to the
     guest, and reserve all unused error codes for future usage

   - Overhaul the TDP MMU => S-EPT code to move as much S-EPT specific
     logic as possible into the TDX code, and to funnel (almost) all
     S-EPT updates into a single chokepoint. The motivation is largely
     to prepare for upcoming Dynamic PAMT support, but the cleanups are
     nice to have on their own

   - Plug a hole in shadow page table handling, where KVM fails to
     recursively zap nested EPT/NPT shadow page tables when the nested
     hypervisor tears down its own EPT/NPT page tables from the bottom
     up

  x86 (Intel):

   - Support for nested MBEC (Mode-Based Execute Control), see above in
     the generic section; also run with MBEC enabled even for non-nested
     mode

   - Use the kernel's "enum pg_level" in the TDX APIs instead of the
     TDX-Module's level definitions (which are 0-based)

   - Rework the TDX memory APIs to not require/assume that guest memory
     is backed by "struct page" (in prepartion for guest_memfd hugepage
     support)

   - Fix a largely benign bug where KVM TDX would incorrectly state it
     could emulate several x2APIC MSRs

   - Use the "safe" WRMSR API when proxying LBR MSR writes as the
     to-be-written value is guest controlled and completely unvalidated

  x86 (AMD):

   - Support for nested GMET (Guest Mode Execution Trap), see above in
     the generic section; also run with GMET enabled even for non-nested
     mode

   - Fixes and minor cleanups to GHCB handling, on top of the earlier
     work already merged into 7.1-rc

   - Ensure KVM's copy of CR0 and CR3 are up-to-date prior to invoking
     fastpath handlers

   - Add support for virtualizing gPAT (KVM previously just used L1's
     PAT when running L2)

   - Fix goofs where KVM mishandles side effects (e.g. single-step and
     PMC updates) when emulating VMRUN

   - Fix a variety of bugs in AVIC's handling of x2APIC MSR
     interception, most notably where KVM didn't disable interception of
     IRR, ISR, and TMR regs

   - Add support for virtualizing Host-Only/Guest-Only bits in the
     mediated PMU

   - Don't advertise support for unusable VM types, and account for VM
     types that are disabled by firmware, e.g. to mitigate security
     vulnerabilities

   - Rewrite the SEV {en,de}crypt debug ioctls as they were riddle with
     bugs and unnecessarily complicated, and add comprehensive tests

   - Clean up and deduplicate the SEV page pinning code

   - Fix minor goofs related to writing back CPUID information after
     firmware rejects a CPUID page for an SNP vCPU

  Generic:

   - Rename invalidate_begin() to invalidate_start() throughout KVM to
     follow the kernel's nomenclature, e.g. for mmu_notifiers

   - Use guard() to cleanup up various KVM+VFIO flows

   - Minor cleanups

  guest_memfd:

   - Return -EEXIST instead of -EINVAL if userspace attempts to bind a
     gmem range to multiple memslots, and fix the test that was supposed
     to ensure KVM returns -EEXIST

   - Treat memslot binding offsets and sizes as unsigned values to fix a
     bug where KVM interprets a large "offset + size" as a negative
     value and allows a nonsensical offset

   - Use the inode number instead of the page offset for the NUMA
     interleaving index to fix a bug where the effective index would
     jump by two for consecutive pages (the caller also adds in the page
     offset)

  Selftests:

   - Randomize the dirty log test's delay when reaping the bitmap on the
     first pass, as always waiting only 1ms hid a KVM RISC-V bug as the
     test reaped the bitmap before KVM could build up enough state to
     hit the bug

   - A pile of one-off fixes and cleanups"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (326 commits)
  KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level
  KVM: x86: Fix shadow paging use-after-free due to unexpected role
  KVM: s390: Introducing kvm_arch_set_irq_inatomic fast inject
  KVM: s390: Enable adapter_indicators_set to use mapped pages
  KVM: s390: Add map/unmap ioctl and clean mappings post-guest
  riscv: kvm: Use endian-specific __lelong for NACL shared memory
  KVM: selftests: access_tracking_perf_test: bump number of NUMA nodes to 32
  KVM: s390: vsie: Implement ASTFLEIE facility 2
  KVM: s390: vsie: Refactor handle_stfle
  s390/sclp: Detect ASTFLEIE 2 facility
  KVM: s390: Minor refactor of base/ext facility lists
  KVM: x86/mmu: move pdptrs out of the MMU
  KVM: x86: check that kvm_handle_invpcid is only invoked with shadow paging
  KVM: nSVM: invalidate cached PDPTRs across nested NPT transitions
  KVM: nVMX: remove unnecessary code in prepare_vmcs02_rare
  KVM: x86: remove nested_mmu from mmu_is_nested()
  KVM: arm64: vgic-its: Make ABI commit helpers return void
  KVM: s390: Initialize KVM_S390_GET_CMMA_BITS memory
  LoongArch: KVM: Add missing slots_lock for device register/unregister
  LoongArch: KVM: Validate irqchip index in irqfd routing
  ...
 2026-06-19 08:56:49 -07:00
Arnd Bergmann
998d4d789d arm64: static_call: include asm/insns.h 
I came a cross a missing declaration in a randconfig build:

arch/arm64/kernel/static_call.c:16:5: error: call to undeclared function 'aarch64_insn_adrp_get_offset'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   16 |                   aarch64_insn_adrp_get_offset(le32_to_cpup(tramp + 4)) +
      |                   ^

Include the header that contains this definition explicitly,
rather than relying on it to come indirectly through another
header.

Fixes: 54ac9ff8f1 ("arm64: Use static call trampolines when kCFI is enabled")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Will Deacon <will@kernel.org>
 2026-06-19 15:27:33 +01:00
Shardul Deshpande
07669b0abe treewide: fix transposed "sign" typos and update spelling.txt 
Several comments transpose the letters in "assigned" and "unsigned",
spelling them with "sing" instead of "sign".  Correct all of them.

Of these, the misspelling of "assigned" is not yet flagged by checkpatch,
so also add it to scripts/spelling.txt.

The remaining matches of `grep -ri singed` are RISINGEDGE register and
enum names, not typos.

Link: https://lore.kernel.org/20260612181633.734458-1-iamsharduld@gmail.com
Signed-off-by: Shardul Deshpande <iamsharduld@gmail.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-06-17 15:37:47 -07:00
Linus Torvalds
d076a8d3b9 IOMMU Updates for Linux v7.2 
Including:
 
 Core Code:
 
   - Fix dma-iommu scatterlist length handling in the P2PDMA path.
 
   - Extend the generic IOMMU page-table code with detailed gather
     support for more precise invalidations.
 
   - Add pending-gather tracking to generic page-table invalidation
     handling.
 
   - Add support for smaller virtual address sizes in the generic AMDv1
     page-table format, including KUnit coverage.
 
   - Fix page-size bitmap calculation for smaller VA configurations.
 
   - Rework Arm io-pgtable allocation/freeing to consistently use the
     iommu-pages API and address-conversion helpers.
 
   - Add PCI ATS infrastructure for devices that require ATS, including
     always-on ATS handling for pre-CXL devices.
 
 AMD IOMMU:
 
   - Fix several IOTLB invalidation details, including PDE handling,
     flush-all behavior, and command address encoding.
 
   - Honor IVINFO[VASIZE] when deriving address limits.
 
   - Fix premature loop termination in init_iommu_one().
 
   - Add Hygon family 18h model 4h IOAPIC support.
 
   - Clean up legacy-mode handling, stale comments, dead IVMD
     exclusion-range code, and unused address-size macros.
 
 Arm SMMU / Arm SMMU v3:
 
   - SMMUv2:
     - Device-tree binding updates for Qualcomm Hawi, Nord and Shikra
       SoCs.
     - Constain the clocks which can be specified for recent Qualcomm
       SoCs.
     - Fix broken compatible string for Qualcomm prefetcher
       configuration an add new entry for the Glymur MDSS.
     - Ensure SMMU is powered-up when writing context bank for Adreno
       client.
 
   - SMMUv3:
     - Fix off-by-one in queue allocation retry loop.
     - Enable hardware update of access/dirty bits from the SMMU.
     - Re-jig command construction to use separate inline helpers for
       each command type.
 
 Intel VT-d:
 
   - Add the PCI segment number to DMA fault messages.
 
   - Improve support for non-PRI mode SVA.
 
   - Ensure atomicity during context entry teardown.
 
   - Fix RB-tree corruption in the probe error path.
 
 RISC-V IOMMU:
 
   - Add NAPOT range invalidation support.
 
   - Use detailed gather information for invalidation decisions.
 
   - Compute the best stride for single invalidations.
 
   - Advertise Svpbmt support to the generic page-table code.
 
   - Add capability definitions and clean up command macro encoding.
 
 VeriSilicon IOMMU:
 
   - Add a new VeriSilicon IOMMU driver.
 
   - Add devicetree binding documentation and MAINTAINERS coverage.
 
   - Add the RK3588 VeriSilicon IOMMU node.
 
   - Apply small cleanups and warning fixes in the new driver.
 
 Rockchip IOMMU:
 
   - Disable the fetch DTE time limit.
 
 Apple DART:
 
   - Correct a stale CONFIG_PCIE_APPLE macro name in a comment.
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Merge tag 'iommu-updates-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Joerg Roedel:
 "Core Code:

   - Fix dma-iommu scatterlist length handling in the P2PDMA path

   - Extend the generic IOMMU page-table code with detailed gather
     support for more precise invalidations

   - Add pending-gather tracking to generic page-table invalidation
     handling

   - Add support for smaller virtual address sizes in the generic AMDv1
     page-table format, including KUnit coverage

   - Fix page-size bitmap calculation for smaller VA configurations

   - Rework Arm io-pgtable allocation/freeing to consistently use the
     iommu-pages API and address-conversion helpers

   - Add PCI ATS infrastructure for devices that require ATS, including
     always-on ATS handling for pre-CXL devices

  AMD IOMMU:

   - Fix several IOTLB invalidation details, including PDE handling,
     flush-all behavior, and command address encoding

   - Honor IVINFO[VASIZE] when deriving address limits

   - Fix premature loop termination in init_iommu_one()

   - Add Hygon family 18h model 4h IOAPIC support

   - Clean up legacy-mode handling, stale comments, dead IVMD
     exclusion-range code, and unused address-size macros

  Arm SMMU / Arm SMMU v3:

   - SMMUv2:
      - Device-tree binding updates for Qualcomm Hawi, Nord and Shikra
        SoCs
      - Constrain the clocks which can be specified for recent Qualcomm
        SoCs
      - Fix broken compatible string for Qualcomm prefetcher
        configuration an add new entry for the Glymur MDSS
      - Ensure SMMU is powered-up when writing context bank for Adreno
        client

   - SMMUv3:
      - Fix off-by-one in queue allocation retry loop
      - Enable hardware update of access/dirty bits from the SMMU
      - Re-jig command construction to use separate inline helpers for
        each command type

  Intel VT-d:

   - Add the PCI segment number to DMA fault messages

   - Improve support for non-PRI mode SVA

   - Ensure atomicity during context entry teardown

   - Fix RB-tree corruption in the probe error path

  RISC-V IOMMU:

   - Add NAPOT range invalidation support

   - Use detailed gather information for invalidation decisions

   - Compute the best stride for single invalidations

   - Advertise Svpbmt support to the generic page-table code

   - Add capability definitions and clean up command macro encoding

  VeriSilicon IOMMU:

   - Add a new VeriSilicon IOMMU driver

   - Add devicetree binding documentation and MAINTAINERS coverage

   - Add the RK3588 VeriSilicon IOMMU node

   - Apply small cleanups and warning fixes in the new driver

  Rockchip IOMMU:

   - Disable the fetch DTE time limit

  Apple DART:

   - Correct a stale CONFIG_PCIE_APPLE macro name in a comment"

* tag 'iommu-updates-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (66 commits)
  iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
  iommu/amd: Control INVALIDATE_IOMMU_PAGES PDE from the gather
  iommu/amd: Make CMD_INV_IOMMU_ALL_PAGES_ADDRESS match the spec
  iommu/amd: Have amd_iommu_domain_flush_pages() use last
  iommu/amd: Pass last in through to build_inv_address()
  iommu/amd: Simplify build_inv_address()
  iommu/apple-dart: correct CONFIG_PCIE_APPLE macro name in comment
  iommu/vt-d: Fix RB-tree corruption in probe error path
  iommu/vt-d: Improve IOMMU fault information
  iommu/vt-d: Remove typo from pasid_pte_config_nested()
  iommu/vt-d: Clear Present bit before tearing down scalable-mode context entry
  iommu/vt-d: Avoid WARNING in sva unbind path
  dt-bindings: arm-smmu: Correct and add constraints for Hawi, Shikra and Kaanapali
  dt-bindings: arm-smmu: Add compatible for Qualcomm Nord SoC
  iommu/amd: Don't split flush for amd_iommu_domain_flush_all()
  iommu/rockchip: disable fetch dte time limit
  iommu/arm-smmu-v3: Allow ATS to be always on
  PCI: Allow ATS to be always on for pre-CXL devices
  PCI: Add pci_ats_required() for CXL.cache capable devices
  iommu/vsi: Use list_for_each_entry()
  ...
 2026-06-17 12:24:50 -07:00
Linus Torvalds
6505114e82 soc: arm code changes for 7.2 
The largest addition here is the revived support for the ZTE ZX
 SoC platform, though this mostly documentation.
 
 The other changes are code cleanups that deal with continued
 conversion of the GPIO library away from GPIO numbers to
 descriptors and a few minor bugfixes.
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Merge tag 'soc-arm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull arm SoC code updates from Arnd Bergmann:
 "The largest addition here is the revived support for the ZTE ZX SoC
  platform, though this mostly documentation.

  The other changes are code cleanups that deal with continued
  conversion of the GPIO library away from GPIO numbers to descriptors
  and a few minor bugfixes"

* tag 'soc-arm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  MAINTAINERS: Add Axiado reviewer and Maintainers
  ARM: remove the last few uses of do_bad_IRQ()
  ARM: imx31: Fix IIM mapping leak in revision check
  ARM: imx3: Fix CCM node reference leak
  ARM: orion5x: update board check in mss2_pci_init() to use the DT
  arm: mvebu_v5_defconfig: remove stale MACH_LINKSTATION_LSCHL reference
  ARM: mvebu: simplify of_node_put calls
  ARM: mvebu: drop unnecessary NULL check
  arm: boot: ep93xx: don't rely on machine_is_*() for removed board files
  ARM: zte: clean up zx297520v3 doc. warnings
  arm64: Kconfig: drop unneeded dependency on OF_GPIO for ARCH_MVEBU
  firmware: imx: sm-misc: Make scmi_imx_misc_ctrl_nb variable static
  ARM: zte: Add zx297520v3 platform support
  ARM: pxa: pxa27x: attach software node to its target GPIO controller
  ARM: pxa: pxa25x: attach software node to its target GPIO controller
  ARM: pxa: spitz: attach software nodes to their target GPIO controllers
  ARM: pxa: statify platform device definitions in spitz board file
  ARM: omap2: simplify allocation for omap_device
  ARM: select legacy gpiolib interfaces where used
  ARM: s3c: use gpio lookup table for LEDs
 2026-06-17 11:28:10 -07:00
Linus Torvalds
61cf958810 soc: defconfig updates for 7.2 
The main change this time is a cleanup series from Krzysztof Kozlowski
 that updates the defconfig files to be more in sync with changes to
 the Kconfig files that moved options around or removed the completely.
 
 In addition, a number of drivers get enabled, in order to support
 more hardware out of the box, as usual.
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Merge tag 'soc-defconfig-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC defconfig updates from Arnd Bergmann:
 "The main change this time is a cleanup series from Krzysztof Kozlowski
  that updates the defconfig files to be more in sync with changes to
  the Kconfig files that moved options around or removed the completely.

  In addition, a number of drivers get enabled, in order to support more
  hardware out of the box, as usual"

* tag 'soc-defconfig-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  arm64: defconfig: enable BST SDHCI controller
  arm64: configs: Update defconfig for AST2700 platform support
  ARM: multi_v7_defconfig: Enable dma-buf heaps
  ARM: configs: Drop duplicated CONFIG_EXT4_FS
  arm64: defconfig: Enable DP83822 PHY driver
  ARM: configs: at91: sama7: add sama7d65 i3c-hci
  arm64: defconfig: Enable PCI M.2 power sequencing driver
  arm64: defconfig: Enable CIX Sky1 pinctrl, PCIe host, and Cadence GPIO
  ARM: multi_v7_defconfig: Correct QCOM_RPMH and QCOM_RPMHPD
  ARM: multi_v7_defconfig: Cleanup redundant options
  ARM: configs: Drop redundant SND_ATMEL_SOC
  ARM: configs: Drop redundant I2C_DESIGNWARE_PLATFORM
  ARM: multi_v7_defconfig: Move entries to match savedefconfig
  arm64: defconfig: Switch Ethernet drivers to modules
  arm64: defconfig: Drop unused Ethernet vendors
  arm64: defconfig: Drop default or selected drivers
  arm64: defconfig: Drop unused legacy netfilter options
  arm64: defconfig: Move entries to match savedefconfig
  pinctrl: qcom: Make important drivers default (2)
 2026-06-17 11:26:33 -07:00
Linus Torvalds
aab799b1bd soc: devicetree updates for 7.2 
There are fewer devicetree updates this time that the last few ones, with
 five SoC types getting added:
 
  - Qualcomm Dragonwing IPQ9650 is a new wireless networking SoC using
    four Cortex-A55 and one Cortex-A78 core, which is a significant
    upgrade from older generations
 
  - ZTE zx297520v3 is an older low-end wireless SoC using a single
    Cortex-A53 core, which so far can only run 32-bit kernels.  This brings
    back the ZX family of chips that was removed in 2021 after support
    for the original zx296702 and zx296718 chips was never completed.
 
  - Renesas R-Car M3Le (R8A779MD) is a variant of the R-Car M3-N (R8A77965)
    automotive SoC.
 
  - Apple t8122 (M3) is the 2023 generation of their laptop SoCs,
    which has now been reverse-engineered to the point of having initial
    kernel support for five laptop models.
 
  - ASPEED AST27xx is their first baseboard managment controller using
    a 64-bit core, the Cortex-A35, following earlier generations using
    ARMv5/v6/v7 CPUs.
 
 These all come with one or more initial boards, and in total there
 are 39 new boards getting added across SoC families, including:
 
  - Two NAS boxes using the old Cortina Systems Gemini SoC based on
    an ARMv4 FA526 CPU core
 
  - 18 industrial embedded boards using NXP i.MX6/8/9 and LX2160A
    SoCs from Variscite, Toradex and SolidRun, plus a number of
    overlays for combinations with additional boards
 
  - One new carrier board and SoM using TI K3 AM62x, in addition to
    new overlays for older SoMs
 
  - Two new boards using Spacemit K3 (no relation with TI) RISC-V
    SoCs.
 
  - Three phones from Google, Nothing and Motorola, all using Qualcomm
    Snapdragon SoCs
 
  - AST26xx BMC support for two server boards
 
 While there is still a significant number of patches improving hardware
 support for the existing boards across vendors (NXP, Qualcomm, Renesas,
 Rockchips, Mediatek, ...), a much smaller number of cleanups and warning
 fixes have made it in this time.
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Merge tag 'soc-dt-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC devicetree updates from Arnd Bergmann:
 "There are fewer devicetree updates this time that the last few ones,
  with five SoC types getting added:

   - Qualcomm Dragonwing IPQ9650 is a new wireless networking SoC using
     four Cortex-A55 and one Cortex-A78 core, which is a significant
     upgrade from older generations

   - ZTE zx297520v3 is an older low-end wireless SoC using a single
     Cortex-A53 core, which so far can only run 32-bit kernels. This
     brings back the ZX family of chips that was removed in 2021 after
     support for the original zx296702 and zx296718 chips was never
     completed.

   - Renesas R-Car M3Le (R8A779MD) is a variant of the R-Car M3-N
     (R8A77965) automotive SoC.

   - Apple t8122 (M3) is the 2023 generation of their laptop SoCs, which
     has now been reverse-engineered to the point of having initial
     kernel support for five laptop models.

   - ASPEED AST27xx is their first baseboard managment controller using
     a 64-bit core, the Cortex-A35, following earlier generations using
     ARMv5/v6/v7 CPUs.

  These all come with one or more initial boards, and in total there are
  39 new boards getting added across SoC families, including:

   - Two NAS boxes using the old Cortina Systems Gemini SoC based on an
     ARMv4 FA526 CPU core

   - 18 industrial embedded boards using NXP i.MX6/8/9 and LX2160A SoCs
     from Variscite, Toradex and SolidRun, plus a number of overlays for
     combinations with additional boards

   - One new carrier board and SoM using TI K3 AM62x, in addition to new
     overlays for older SoMs

   - Two new boards using Spacemit K3 (no relation with TI) RISC-V SoCs.

   - Three phones from Google, Nothing and Motorola, all using Qualcomm
     Snapdragon SoCs

   - AST26xx BMC support for two server boards

  While there is still a significant number of patches improving
  hardware support for the existing boards across vendors (NXP,
  Qualcomm, Renesas, Rockchips, Mediatek, ...), a much smaller number
  of cleanups and warning fixes have made it in this time"

* tag 'soc-dt-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (665 commits)
  arm64: dts: aspeed: Fix duplicate pinctrl labels and address scheme
  arm64: dts: bst: enable eMMC controller in C1200
  dt-bindings: display/lvds-codec: add ti,sn65lvds93
  arm64: dts: allwinner: a523: Add missing GPIO interrupt
  arm64: dts: lx2160a-rev2: avoid 32-bit pcie window system ram overlap
  arm64: dts: aspeed: Add initial AST27xx SoC device tree
  arm64: Kconfig: Add ASPEED SoC family Kconfig support
  dt-bindings: arm: aspeed: Add AST2700 board compatible
  arm64: dts: allwinner: a523: add gpadc node
  arm64: dts: allwinner: Add EL2 virtual timer interrupt
  ARM: dts: sun8i: a83t: Add MIPI CSI-2 controller node
  dt-bindings: media: sun6i-a31-isp: Add optional interconnect properties
  dt-bindings: media: sun6i-a31-csi: Add optional interconnect properties
  arm64: dts: imx{91,93}-phyboard-segin: Add peb-av-18 overlays
  arm64: dts: imx93-var-som-symphony: enable ADC
  arm64: dts: imx93-var-som-symphony: enable TPM3 PWM
  arm64: dts: imx93-var-som-symphony: keep RGB_SEL low
  arm64: dts: imx93-var-som-symphony: enable UART7
  arm64: dts: imx93-var-som-symphony: add TPM support
  arm64: dts: imx91-var-som-symphony: fix RGB_SEL handling
  ...
 2026-06-17 11:16:56 -07:00
Linus Torvalds
59a6c7ac0a bitmap updates for v7.2 
- new handy helper FIELD_GET_SIGNED() (Yury);
  - arch test_and_set_bit_lock() and clear_bit_unlock() cleanup (Randy);
  - __bf_shf() simplification (Yury);
  - bitmap_print_to_pagebuf() removal (Yury);
  - RISCV/bitrev conditional support (Jindie, Yury);
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Merge tag 'bitmap-for-7.2' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:
 "This includes the new FIELD_GET_SIGNED() helper,
  bitmap_print_to_pagebuf() removal, RISCV/bitrev support, and a couple
  cleanups.

   - new handy helper FIELD_GET_SIGNED() (Yury)

   - arch test_and_set_bit_lock() and clear_bit_unlock() cleanup (Randy)

   - __bf_shf() simplification (Yury)

   - bitmap_print_to_pagebuf() removal (Yury)

   - RISCV/bitrev conditional support (Jindie, Yury)"

* tag 'bitmap-for-7.2' of https://github.com/norov/linux:
  MAINTAINERS: BITOPS: include bitrev.[ch]
  arch/riscv: Add bitrev.h file to support rev8 and brev8
  bitops: Define generic___bitrev8/16/32 for reuse
  lib/bitrev: Introduce GENERIC_BITREVERSE
  arch: select HAVE_ARCH_BITREVERSE conditionally on BITREVERSE
  bitmap: fix find helper documentation
  bitmap: drop bitmap_print_to_pagebuf()
  cpumask: switch cpumap_print_to_pagebuf() to using scnprintf()
  bitfield: wire __bf_shf to __builtin_ctzll
  bitops: use common function parameter names
  ptp: switch to using FIELD_GET_SIGNED()
  rtc: rv3032: switch to using FIELD_GET_SIGNED()
  wifi: rtw89: switch to using FIELD_GET_SIGNED()
  iio: mcp9600: switch to using FIELD_GET_SIGNED()
  iio: pressure: bmp280: switch to using FIELD_GET_SIGNED()
  iio: magnetometer: yas530: switch to using FIELD_GET_SIGNED()
  iio: intel_dc_ti_adc: switch to using FIELD_GET_SIGNED()
  x86/extable: switch to using FIELD_GET_SIGNED()
  bitfield: add FIELD_GET_SIGNED()
 2026-06-17 11:38:38 +01:00
Linus Torvalds
8479bb8c44 Modules changes for v7.2-rc1 
- Add a missing return value check for module_extend_max_pages()
   to prevent a kernel oops on memory allocation failure.
 
 - Force sh_addr to 0 for architecture-specific module sections on
   arm, arm64, m68k, and riscv. This prevents non-zero section
   addresses when linking modules with ld.bfd -r, which may cause
   tools to misbehave and result in worse compressibility.
 
 - Replace pr_warn! with pr_warn_once! for set_param null pointer
   warnings in Rust abstractions, now that the _once variant is
   available.
 
 Note that as part of our maintainer rotation, Petr Pavlu will be
 taking over module subsystem pull requests for the next six months.
 
 Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
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Merge tag 'modules-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux

Pull modules updates from Sami Tolvanen:

 - Add a missing return value check for module_extend_max_pages() to
   prevent a kernel oops on memory allocation failure.

 - Force sh_addr to 0 for architecture-specific module sections on arm,
   arm64, m68k, and riscv. This prevents non-zero section addresses when
   linking modules with ld.bfd -r, which may cause tools to misbehave
   and result in worse compressibility.

 - Replace pr_warn! with pr_warn_once! for set_param null pointer
   warnings in Rust abstractions, now that the _once variant is
   available.

* tag 'modules-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
  rust: module_param: add missing newline to pr_warn_once
  module: decompress: check return value of module_extend_max_pages()
  rust: module_param: use `pr_warn_once!` for null pointer warning
  module, riscv: force sh_addr=0 for arch-specific sections
  module, m68k: force sh_addr=0 for arch-specific sections
  module, arm64: force sh_addr=0 for arch-specific sections
  module, arm: force sh_addr=0 for arch-specific sections
 2026-06-17 11:35:58 +01:00
Linus Torvalds
4b99990cdf drm-next for 7.2-rc1 
core:
 - add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD
 - change signature of drm_connector_attach_hdr_output_metadata_property
 - dedup counter and timestamp retrieval in vblank code
 - parse AMD VSDB v3 in CTA extension blocks
 - add P230, Y7, XYYY2101010, T430, XVUY210101010 formats
 - don't call drop master on file close if not master
 - use drm_printf_indent in atomic / bridge
 - fix 32b format descriptions
 - docs: fix toctree
 - hdmi: add common TMDS character rates
 - fix drm_syncobj_find_fence leak
 
 rust:
 - introduce Higher-Ranked lifetime types
 - replace drvdata with scoped registration data
 - add GPUVM immediate mode abstraction for rust GPU drivers
 - introduce DeviceContext type state for drm::Device
 
 bridge:
 - clarify drm_bridge_get/put
 - create drm_get_bridge_by_endpoint and use it
 - analogix_dp: add panel probing
 - ite-it6211 - use drm audio hdmi helpers
 
 buddy:
 - add lockdep annotations
 
 dp:
 - add PR and VRR updates
 - mst: fix buffer overflows
 - add Adaptive Sync SDP decoding support
 - fix OOB reads in dp-mst
 
 ttm:
 - bump fpfn/lpfn to 64-bit
 
 scheduler:
 - change default to fair scheduler
 - map runqueue 1:1 with scheduler
 
 dma-buf:
 - port selftests to kunit
 - convert dma-buf system/heap allocators to module
 - add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig
 
 udmabuf:
 - revert hugetlb support
 - fix error with CONFIG_DMA_API_DEBUG
 
 dma-fence:
 - fix tracepoints lifetime
 - remove unused signal on any support
 
 ras:
 - add clear error counter netlink command to drm ras
 
 gpusvm:
 - reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
 - use IOVA allocations
 
 pagemap:
 - use IOVA allocations
 
 panels:
 - update to use ref counts
 - add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1
 - add support for waveshare panels
 - CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5,
 - IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F,
 - AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels
 - Surface Pro 12 Panel
 
 xe:
 - add CRI PCI-IDs
 - debugfs add multi-lrc info
 - engine init cleanup
 - PF fair scheduling auto provisioning
 - system controller support for CRI/Xe3p
 - PXP state machine fixes
 - Reset/wedge/unload corner case fixes
 - Wedge path memory allocation fixes
 - PAT type cleanups
 - Reject unsafe PAT for CPU cached memory
 - OA improvements for CRI device memory
 - kernel doc syntax in xe headers
 - xe_drm.h documentation fixes
 - include guard cleanups
 - VF CCS memory pool
 - i915/xe step unification
 - Xe3p GT tuning fixes
 - forcewake cleanup in GT and GuC
 - admin-only PF mode
 - enable hwmon energy attributes for CRI
 - enable GT_MI_USER_INTERRUPT
 - refactor emit functions
 - oa workarounds
 - multi_queue: allow QUEUE_TIMESTAMP register
 - convert stolen memory to ttm range manager
 - use xe2 style blitter as a feature flag
 - make drm_driver const
 - add/use IRQ page to HW engine definition
 - fix oops when display disabled
 
 i915:
 - enable PIPEDMC_ERROR interrupt
 - more common display code refactoring
 - restructure DP/HDMI sink format handling
 - eliminate FB usage from lowlevel pinning code
 - panel replay bw optimization
 - integrate sharpness filter into the scaler
 - new fb_pin abstraction for xe/i915 fb transparent handling
 - skip inactive MST connectors on HDCP
 - start switching to display specific registers
 - use polling when irq unavailable
 - Adaptive-sync SDP prep
 
 amdgpu:
 - use drm_display_info for AMD VSDB data
 - Initial HDMI 2.1 FRL support
 - Initial DCN 4.2.1 support
 - GART fixes for non-4k pages
 - GC 11.5.6/SDMA 6.4.0/and other new IPs
 - GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes
 - Finish support for using multiple SDMA queues for TTM operations
 - SWSMU updates
 - GC 12.1 updates
 - SMU 15.0.8 updates
 - DCN 4.2 updates
 - DC type conversion fixes
 - Enable DC power module
 - Replay/PSR updates
 - SMU 13.x updates
 - Compute queue quantum MQD updates
 - ASPM fix
 - Align VKMS with common implementation
 - DC analog support fixes
 - UVD 3 fixes
 - TCC harvesting fixes for SI
 - GC 11 APU module reload fix
 - NBIO 6.3.2 support
 - IH 7.1 updates
 - DC cursor fixes
 - VCN/JPEG user fence fixes
 - DC support for connectors without DDC
 - Prefer ROM BAR for default VGA device
 - DC bandwidth fixes
 - Add PTL support for profiler
 - Introduce dc_plane_cm and migrate surface update color path
 - Add FRL registers for HDMI 2.1
 - Restructure VM state machine
 - Auxless ALPM support
 - GEM_OP locking/warning fixes
 - switch to system_dfl_wq
 
 amdkfd:
 - GPUVM TLB flush fix
 - Hotplug fix
 - Boundary check fixes
 - SVM fixes
 - CRIU fixes
 - add profiler API
 - MES 12.1 updates
 
 msm:
 - core:
   - fix shrinker documentation
   - IFPC enabled for gen8
   - PERFCNTR_CONFIG ioctl support
 - GPU:
   - reworked UBWC handling
   - a810 support
 - MDSS:
   - add support for Milos platform
   - reworked UBWC handling
 - DisplayPort:
   - reworked HPD handling as prep for MST
 - DPU:
   - Milos platform support
   - reworked UBWC handling
 - DSI:
   - Milos platform support
 
 nova:
 - Hopper/Blackwell enablement (GH100/GB100/GB202)
   - FSP support
   - 32-bit firmware support
   - HAL functions
 - refactor GSP boot/unload
 - GA100 support
 - VBIOS hardening/refactoring
 - Adopt higher order lifetime types
 
 tyr:
 - define register blocks
 - add shmem backed GEM objects
 - adopt higher order lifetime types
 - move clock cleanup into Drop
 
 radeon:
 - Hawaii SMU fixes
 - CS parser fix
 - use struct drm_edid instead of edid
 
 amdxdna:
 - export per-client BO memory via fdinfo
 - AIE4 device support
 - support medium/lower power modes
 - expandable device heap support
 - revert read-only user-pointer BO mappings
 
 ivpu:
 - support frequency limiting
 
 panthor:
 - enable GEM shrinker support
 - add eviction and reclaim info to fdinfo
 
 v3d:
 - enable runtime PM
 
 mgag200:
 - support XRGB1555 + C8
 
 ast:
 - support XRGB1555 + C8
 - use constants for lots of registers
 - fix register handling
 
 imagination:
 - fence handling refactoring
 
 nouveau:
 - fix sched double call
 - expose VBIOS on GSP-RM systems
 - add GA100 support
 
 virtio:
 - add VIRTIO_GPU_F_BLOB_ALIGNMENT flag
 - add deferred mapping support
 
 gud:
 - add RCade Display Adapter
 
 hibmc:
 - fix no connectors usage
 
 mediatek:
 - hdmi: convert error handling
 - simplify mtk_crtc allocation
 
 exynos:
 - move fbdev emulation to drm client buffers
 - use drm format helpers for geometry/size
 - adopt core DMA tracking
 - fix framebuffer offset handling
 
 renesas:
 - add RZ/T2H SOC support
 
 versilicon:
 - add cursor plane support
 
 tegra:
 - use drm client for framebuffer
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Merge tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:
   - xe: add initial CRI platform support
   - amdgpu: initial HDMI 2.1 FRL support
   - rust: add some new type concepts for device lifetimes
   - scheduler: moves to a fair algorithm and lots of cleanups

  But it's mostly the usual mountain of changes across the board.

  core:
   - add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD
   - change signature of drm_connector_attach_hdr_output_metadata_property
   - dedup counter and timestamp retrieval in vblank code
   - parse AMD VSDB v3 in CTA extension blocks
   - add P230, Y7, XYYY2101010, T430, XVUY210101010 formats
   - don't call drop master on file close if not master
   - use drm_printf_indent in atomic / bridge
   - fix 32b format descriptions
   - docs: fix toctree
   - hdmi: add common TMDS character rates
   - fix drm_syncobj_find_fence leak

  rust:
   - introduce Higher-Ranked lifetime types
   - replace drvdata with scoped registration data
   - add GPUVM immediate mode abstraction for rust GPU drivers
   - introduce DeviceContext type state for drm::Device

  bridge:
   - clarify drm_bridge_get/put
   - create drm_get_bridge_by_endpoint and use it
   - analogix_dp: add panel probing
   - ite-it6211 - use drm audio hdmi helpers

  buddy:
   - add lockdep annotations

  dp:
   - add PR and VRR updates
   - mst: fix buffer overflows
   - add Adaptive Sync SDP decoding support
   - fix OOB reads in dp-mst

  ttm:
   - bump fpfn/lpfn to 64-bit

  scheduler:
   - change default to fair scheduler
   - map runqueue 1:1 with scheduler

  dma-buf:
   - port selftests to kunit
   - convert dma-buf system/heap allocators to module
   - add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig

  udmabuf:
   - revert hugetlb support
   - fix error with CONFIG_DMA_API_DEBUG

  dma-fence:
   - fix tracepoints lifetime
   - remove unused signal on any support

  ras:
   - add clear error counter netlink command to drm ras

  gpusvm:
   - reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
   - use IOVA allocations

  pagemap:
   - use IOVA allocations

  panels:
   - update to use ref counts
   - add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1
   - add support for waveshare panels
   - CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5,
   - IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F,
   - AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels
   - Surface Pro 12 Panel

  xe:
   - add CRI PCI-IDs
   - debugfs add multi-lrc info
   - engine init cleanup
   - PF fair scheduling auto provisioning
   - system controller support for CRI/Xe3p
   - PXP state machine fixes
   - Reset/wedge/unload corner case fixes
   - Wedge path memory allocation fixes
   - PAT type cleanups
   - Reject unsafe PAT for CPU cached memory
   - OA improvements for CRI device memory
   - kernel doc syntax in xe headers
   - xe_drm.h documentation fixes
   - include guard cleanups
   - VF CCS memory pool
   - i915/xe step unification
   - Xe3p GT tuning fixes
   - forcewake cleanup in GT and GuC
   - admin-only PF mode
   - enable hwmon energy attributes for CRI
   - enable GT_MI_USER_INTERRUPT
   - refactor emit functions
   - oa workarounds
   - multi_queue: allow QUEUE_TIMESTAMP register
   - convert stolen memory to ttm range manager
   - use xe2 style blitter as a feature flag
   - make drm_driver const
   - add/use IRQ page to HW engine definition
   - fix oops when display disabled

  i915:
   - enable PIPEDMC_ERROR interrupt
   - more common display code refactoring
   - restructure DP/HDMI sink format handling
   - eliminate FB usage from lowlevel pinning code
   - panel replay bw optimization
   - integrate sharpness filter into the scaler
   - new fb_pin abstraction for xe/i915 fb transparent handling
   - skip inactive MST connectors on HDCP
   - start switching to display specific registers
   - use polling when irq unavailable
   - Adaptive-sync SDP prep

  amdgpu:
   - use drm_display_info for AMD VSDB data
   - Initial HDMI 2.1 FRL support
   - Initial DCN 4.2.1 support
   - GART fixes for non-4k pages
   - GC 11.5.6/SDMA 6.4.0/and other new IPs
   - GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes
   - Finish support for using multiple SDMA queues for TTM operations
   - SWSMU updates
   - GC 12.1 updates
   - SMU 15.0.8 updates
   - DCN 4.2 updates
   - DC type conversion fixes
   - Enable DC power module
   - Replay/PSR updates
   - SMU 13.x updates
   - Compute queue quantum MQD updates
   - ASPM fix
   - Align VKMS with common implementation
   - DC analog support fixes
   - UVD 3 fixes
   - TCC harvesting fixes for SI
   - GC 11 APU module reload fix
   - NBIO 6.3.2 support
   - IH 7.1 updates
   - DC cursor fixes
   - VCN/JPEG user fence fixes
   - DC support for connectors without DDC
   - Prefer ROM BAR for default VGA device
   - DC bandwidth fixes
   - Add PTL support for profiler
   - Introduce dc_plane_cm and migrate surface update color path
   - Add FRL registers for HDMI 2.1
   - Restructure VM state machine
   - Auxless ALPM support
   - GEM_OP locking/warning fixes
   - switch to system_dfl_wq

  amdkfd:
   - GPUVM TLB flush fix
   - Hotplug fix
   - Boundary check fixes
   - SVM fixes
   - CRIU fixes
   - add profiler API
   - MES 12.1 updates

  msm:
   - core:
     - fix shrinker documentation
     - IFPC enabled for gen8
     - PERFCNTR_CONFIG ioctl support
   - GPU:
     - reworked UBWC handling
     - a810 support
   - MDSS:
     - add support for Milos platform
     - reworked UBWC handling
   - DisplayPort:
     - reworked HPD handling as prep for MST
   - DPU:
     - Milos platform support
     - reworked UBWC handling
   - DSI:
     - Milos platform support

  nova:
   - Hopper/Blackwell enablement (GH100/GB100/GB202)
     - FSP support
     - 32-bit firmware support
     - HAL functions
   - refactor GSP boot/unload
   - GA100 support
   - VBIOS hardening/refactoring
   - Adopt higher order lifetime types

  tyr:
   - define register blocks
   - add shmem backed GEM objects
   - adopt higher order lifetime types
   - move clock cleanup into Drop

  radeon:
   - Hawaii SMU fixes
   - CS parser fix
   - use struct drm_edid instead of edid

  amdxdna:
   - export per-client BO memory via fdinfo
   - AIE4 device support
   - support medium/lower power modes
   - expandable device heap support
   - revert read-only user-pointer BO mappings

  ivpu:
   - support frequency limiting

  panthor:
   - enable GEM shrinker support
   - add eviction and reclaim info to fdinfo

  v3d:
   - enable runtime PM

  mgag200:
   - support XRGB1555 + C8

  ast:
   - support XRGB1555 + C8
   - use constants for lots of registers
   - fix register handling

  imagination:
   - fence handling refactoring

  nouveau:
   - fix sched double call
   - expose VBIOS on GSP-RM systems
   - add GA100 support

  virtio:
   - add VIRTIO_GPU_F_BLOB_ALIGNMENT flag
   - add deferred mapping support

  gud:
   - add RCade Display Adapter

  hibmc:
   - fix no connectors usage

  mediatek:
   - hdmi: convert error handling
   - simplify mtk_crtc allocation

  exynos:
   - move fbdev emulation to drm client buffers
   - use drm format helpers for geometry/size
   - adopt core DMA tracking
   - fix framebuffer offset handling

  renesas:
   - add RZ/T2H SOC support

  versilicon:
   - add cursor plane support

  tegra:
   - use drm client for framebuffer"

* tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel: (1731 commits)
  dma-buf: move system_cc_shared heap under separate Kconfig
  accel/amdxdna: Clear sva pointer after unbind
  agp/amd64: Fix broken error propagation in agp_amd64_probe()
  accel/amdxdna: Require carveout when PASID and force_iova are disabled
  drm/amdkfd: always resume_all after suspend_all
  drm/amdgpu/gfx: move fault and EOP IRQ get/put to hw_init/hw_fini
  drm/amd/display: Consult MCCS FreeSync cap only if requested & supported
  drm/amd/pm: Use strscpy in profile mode parsing
  drm/amdkfd: Fix infinite loop parsing CRAT with zero subtype length
  drm/amdkfd: fix sysfs topology prop length on buffer truncation
  drm/amdgpu: drop retry loop in amdgpu_hmm_range_get_pages
  drm/amd/pm: bound OD parameter parsing to stack array size
  drm/amd/pm: Stop pp_od_clk_voltage emit at PAGE_SIZE
  drm/amdkfd: Unwind debug trap enable on copy_to_user failure
  drm/amdgpu: validate the mes firmware version for gfx12.1
  drm/amdgpu: validate the mes firmware version for gfx12
  drm/amdgpu: compare MES firmware version ucode for gfx11
  drm/amdkfd: Add bounds check for AMDKFD_IOC_WAIT_EVENTS
  drm/amdgpu: restart the CS if some parts of the VM are still invalidated
  drm/amd/display: use unsigned types for local pipe and REG_GET counters
  ...
 2026-06-17 10:21:00 +01:00
Linus Torvalds
9c87e61e3c bpf-next-7.2 
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Merge tag 'bpf-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
 "Major changes:

   - Recover from BPF arena page faults using a scratch page and add
     ptep_try_set() for lockless empty-slot installs on x86 and arm64.

     This allows BPF kfuncs to access arena pointers directly.

     The 'arena_direct_access' stable branch was created for this work
     and was pulled into sched-ext and bpf-next trees (Tejun Heo, Kumar
     Kartikeya Dwivedi)

   - Lift old restriction and support 6+ arguments in BPF programs and
     kfuncs on x86 and arm64 (Yonghong Song, Puranjay Mohan)

  Other features and fixes:

   - Add 24-bit BTF vlen and reclaim unused bits in the BTF UAPI to ease
     addition of new BTF kinds (Alan Maguire)

   - Raise the maximum BPF call chain depth from 8 to 16 frames (Alexei
     Starovoitov)

   - Refactor object relationship tracking in the verifier and fix a
     dynptr use-after-free bug (Amery Hung)

   - Harden the signed program loader and reject exclusive maps as inner
     maps (Daniel Borkmann)

   - Replace the verifier min/max bounds fields with a circular number
     (cnum) representation and improve 32->64 bit range refinements
     (Eduard Zingerman)

   - Introduce the arena library and runtime (libarena) with a buddy
     allocator, rbtree and SPMC queue data structures, ASAN support and
     a parallel test harness. Allow subprograms to return arena pointers
     and switch to a BTF type-tag based __arena annotation (Emil
     Tsalapatis)

   - Cache build IDs in the sleepable stackmap path and avoid faultable
     build ID reads under mm locks (Ihor Solodrai)

   - Introduce the tracing_multi link to attach a single BPF program to
     many kernel functions at once. Allow specifying the uprobe_multi
     target via FD (Jiri Olsa)

   - Extend the bpf_list family of kfuncs with bpf_list_add/del(), and
     bpf_list_is_first/is_last/empty() (Kaitao Cheng)

   - Extend the BPF syscall with common attributes support for
     prog_load, btf_load and map_create (Leon Hwang)

   - Wrap rhashtable as BPF map (Mykyta Yatsenko, Herbert Xu)

   - Add sleepable support for tracepoint programs and fix deadlocks in
     LRU map due to NMI reentry (Mykyta Yatsenko)

   - Fix OOB access in bpf_flow_keys, fix nullness analysis of inner
     arrays, enforce write checks for global subprograms (Nuoqi Gui)

   - Report the maximum combined stack depth and print a breakdown of
     instructions processed per subprogram (Paul Chaignon)

   - Add an XDP load-balancer benchmark and arm64 JIT support for stack
     arguments (Puranjay Mohan)

   - Add kfuncs to traverse over wakeup_sources (Samuel Wu)

   - Allow sleepable BPF programs to use LPM trie maps directly (Vlad
     Poenaru)

   - Many more fixes and cleanups across the verifier, BTF, sockmap,
     devmap, bpffs, security hooks, s390/riscv/loongarch JITs,
     rqspinlock, libbpf, bpftool, selftests"

* tag 'bpf-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (336 commits)
  selftests/bpf: Work around llvm stack overflow in crypto progs
  selftests/bpf: add test for bpf_msg_pop_data() overflow
  bpf, sockmap: fix integer overflow in bpf_msg_pop_data() bounds check
  sockmap: Fix use-after-free in udp_bpf_recvmsg()
  bpf, sockmap: keep sk_msg copy state in sync
  bpf, sockmap: Fix wrong rsge offset in bpf_msg_push_data()
  bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()
  selftsets/bpf: Retry map update on helper_fill_hashmap()
  selftests/bpf: Add test for sleepable lsm_cgroup rejection
  selftests/bpf: Add test to verify the fix for bpf_setsockopt() helper
  bpf: Fix bpf_get/setsockopt to tos for ipv4-mapped ipv6 socket
  selftests/bpf: Avoid static LLVM linking for cross builds
  selftests/bpf: Use common CFLAGS for urandom_read
  selftests/bpf: Initialize operation name before use
  tools/bpf: build: Append extra cflags
  libbpf: Initialize CFLAGS before including Makefile.include
  bpftool: Append extra host flags
  bpftool: Avoid adding EXTRA_CFLAGS to HOST_CFLAGS
  bpftool: Pass host flags to bootstrap libbpf
  selftests/bpf: correct CONFIG_PPC64 macro name in comment
  ...
 2026-06-17 09:18:14 +01:00
Linus Torvalds
0d8c113493 This update includes the following changes: 
API:
 
 - Drop support for off-CPU cryptography in af_alg.
 - Document that af_alg is *always* slower.
 - Document the deprecation of af_alg.
 - Remove zero-copy support from skcipher and aead in af_alg.
 - Cap AEAD AD length to 0x80000000 in af_alg.
 - Free default RNG on module exit.
 
 Algorithms:
 
 - Fix vli multiplication carry overflow in ecc.
 - Drop unused cipher_null crypto_alg.
 - Remove unused variants of drbg.
 - Use lib/crypto in drbg.
 - Use memcpy_from/to_sglist in authencesn.
 - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode.
 - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode.
 - Filter out async aead implementations at alloc in krb5.
 - Fix non-parallel fallback by rstoring callback in pcrypt.
 - Validate poly1305 template argument in chacha20poly1305.
 
 Drivers:
 
 - Add sysfs PCI reset support to qat.
 - Add KPT support for GEN6 devices to qat.
 - Remove unused character device and ioctls from qat.
 - Add support for hw access via SMCC to mtk.
 - Remove prng support from crypto4xx.
 - Remove prng support from hisi-trng.
 - Remove prng support from sun4i-ss.
 - Remove prng support from xilinx-trng.
 - Remove loongson-rng.
 - Remove exynos-rng.
 
 Others:
 
 - Remove support for AIO on sockets.
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Merge tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Drop support for off-CPU cryptography in af_alg
   - Document that af_alg is *always* slower
   - Document the deprecation of af_alg
   - Remove zero-copy support from skcipher and aead in af_alg
   - Cap AEAD AD length to 0x80000000 in af_alg
   - Free default RNG on module exit

  Algorithms:
   - Fix vli multiplication carry overflow in ecc
   - Drop unused cipher_null crypto_alg
   - Remove unused variants of drbg
   - Use lib/crypto in drbg
   - Use memcpy_from/to_sglist in authencesn
   - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
   - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode
   - Filter out async aead implementations at alloc in krb5
   - Fix non-parallel fallback by rstoring callback in pcrypt
   - Validate poly1305 template argument in chacha20poly1305

  Drivers:
   - Add sysfs PCI reset support to qat
   - Add KPT support for GEN6 devices to qat
   - Remove unused character device and ioctls from qat
   - Add support for hw access via SMCC to mtk
   - Remove prng support from crypto4xx
   - Remove prng support from hisi-trng
   - Remove prng support from sun4i-ss
   - Remove prng support from xilinx-trng
   - Remove loongson-rng
   - Remove exynos-rng

  Others:
   - Remove support for AIO on sockets"

* tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (196 commits)
  crypto: tegra - fix refcount leak in tegra_se_host1x_submit()
  crypto: rng - Free default RNG on module exit
  crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
  hwrng: jh7110 - fix refcount leak in starfive_trng_read()
  crypto: atmel-ecc - drop dead code in atmel_ecdh_max_size
  crypto: cavium/cpt - fix DMA cleanup using wrong loop index
  crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
  MAINTAINERS: make myself the maintainer of the Qualcomm QCE driver
  crypto: amcc - convert irq_of_parse_and_map to platform_get_irq
  crypto: sun4i-ss - Remove insecure and unused rng_alg
  hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/
  crypto: xilinx-trng - Replace crypto_drbg_ctr_df() with HMAC-SHA512
  crypto: xilinx-trng - Fix return value of xtrng_hwrng_trng_read()
  crypto: xilinx-trng - Remove crypto_rng interface
  crypto: exynos-rng - Remove exynos-rng driver
  hwrng: hisi-trng - Move hisi-trng into drivers/char/hw_random/
  crypto: hisi-trng - Remove crypto_rng interface
  crypto: loongson - Remove broken and unused loongson-rng
  crypto: crypto4xx - Remove insecure and unused rng_alg
  crypto: qat - validate RSA CRT component lengths
  ...
 2026-06-16 09:01:23 +05:30
Linus Torvalds
80476f22b8 arm64 updates for 7.2 
CPU errata handling:
 - Extend CnP disabling workaround to HiSilicon HIP09 hardware.
 - Work around eternally broken broadcast TLB invalidation on more CPUs.
 - Documentation and code cleanups.
 
 CPU features:
 - Add new hwcaps for the 2025 dpISA extensions.
 
 Floating point / SVE / SME:
 - Significant cleanup to the low-level state management code in the core
   architecture code and KVM.
 - Use correct register widths during SVE/SME save/restore assembly.
 - Expose SVE/SME save/restore memory accesses to sanitisers.
 
 Memory management:
 - Preparatory work for unmapping the kernel data and bss sections from
   the linear map.
 
 Miscellaneous:
 - Inline DAIF manipulation helpers so they can be used safely from
   non-instrumentable code.
 - Fix handling of the 'nosmp' cmdline option to avoid marking secondary
   cores as "possible".
 
 MPAM:
 - Add support for v0.1 of the MPAM architecture.
 
 Perf:
 - Update HiSilicon PMU MAINTAINERS entry.
 - Fix event encodings for the DVM node in the CMN driver.
 
 Selftests:
 - Extend sigframe tests to cover POE context.
 - Add coverage for the newly added 2025 dpISA hwcaps.
 
 System registers:
 - Add new registers and ESR encodings for the HDBSS feature.
 
 Plus minor fixes and cleanups across the board.
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Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "It feels like the new world of AI tooling has slowed us down a little
  on the feature side when compared to the fixes side. The extra rounds
  of Sashiko review have also pushed a few things out until next time.

  Still, there's some good foundational stuff here for the fpsimd code
  and hardening work towards removing the predictable linear alias of
  the kernel image.

  CPU errata handling:
   - Extend CnP disabling workaround to HiSilicon HIP09 hardware.
   - Work around eternally broken broadcast TLB invalidation on more
     CPUs.
   - Documentation and code cleanups.

  CPU features:
   - Add new hwcaps for the 2025 dpISA extensions.

  Floating point / SVE / SME:
   - Significant cleanup to the low-level state management code in the
     core architecture code and KVM.
   - Use correct register widths during SVE/SME save/restore assembly.
   - Expose SVE/SME save/restore memory accesses to sanitisers.

  Memory management:
   - Preparatory work for unmapping the kernel data and bss sections
     from the linear map.

  Miscellaneous:
   - Inline DAIF manipulation helpers so they can be used safely from
     non-instrumentable code.
   - Fix handling of the 'nosmp' cmdline option to avoid marking
     secondary cores as "possible".

  MPAM:
   - Add support for v0.1 of the MPAM architecture.

  Perf:
   - Update HiSilicon PMU MAINTAINERS entry.
   - Fix event encodings for the DVM node in the CMN driver.

  Selftests:
   - Extend sigframe tests to cover POE context.
   - Add coverage for the newly added 2025 dpISA hwcaps.

  System registers:
   - Add new registers and ESR encodings for the HDBSS feature.

  Plus minor fixes and cleanups across the board"

* tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux: (73 commits)
  arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU
  arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU
  arm64: errata: Mitigate TLBI errata on various Arm CPUs
  arm64: cputype: Add C1-Premium definitions
  arm64: cputype: Add C1-Ultra definitions
  Revert "arm64: mm: Unmap kernel data/bss entirely from the linear map"
  Revert "arm64: mm: Defer remap of linear alias of data/bss"
  arm64: arch_timer: reuse arch_timer_read_cnt{p,v}ct_el0() helpers
  arm64/mm: Rename ptdesc_t
  arm64: mm: Defer remap of linear alias of data/bss
  KVM: arm64: Omit tag sync on stage-2 mappings of the zero page
  arm64: Avoid double evaluation of __ptep_get()
  kasan: Move generic KASAN page tables out of BSS too
  arm64: Rename page table BSS section to .bss..pgtbl
  arm64: patching: replace min_t with min in __text_poke
  perf/arm-cmn: Fix DVM node events
  arm64: fpsimd: Remove <asm/fpsimdmacros.h>
  arm64: fpsimd: Move SME save/restore inline
  arm64: fpsimd: Move sve_flush_live() inline
  arm64: fpsimd: Move SVE save/restore inline
  ...
 2026-06-16 05:18:04 +05:30
Linus Torvalds
186d3c4e92 A series of updates for the VDSO: 
- Remove the redundant CONFIG_GENERIC_TIME_VSYSCALL after converting the
     remaining users over.
 
   - Rework and sanitize the MIPS VDSO handling, so it does not handle the
     time related VDSO if there is no VDSO capable clocksource available.
     Also stop mapping VDSO data pages unconditionally even if there is no
     usage possible.
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Merge tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull vdso updates from Thomas Gleixner:

 - Remove the redundant CONFIG_GENERIC_TIME_VSYSCALL after converting
   the remaining users over.

 - Rework and sanitize the MIPS VDSO handling, so it does not handle the
   time related VDSO if there is no VDSO capable clocksource available.
   Also stop mapping VDSO data pages unconditionally even if there is no
   usage possible.

* tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  MIPS: VDSO: Fold MIPS_CLOCK_VSYSCALL into MIPS_GENERIC_GETTIMEOFDAY
  MIPS: VDSO: Gate microMIPS restriction on GCC version
  MIPS: VDSO: Fold MIPS_DISABLE_VDSO into MIPS_GENERIC_GETTIMEOFDAY
  clocksource/drivers/mips-gic-timer: Only use VDSO_CLOCKMODE_GIC when it is a available
  MIPS: csrc-r4k: Only use VDSO_CLOCKMODE_R4K when it is a available
  MIPS: VDSO: Only map the data pages when the vDSO is used
  MIPS: Introduce Kconfig MIPS_GENERIC_GETTIMEOFDAY
  vdso/datastore: Always provide symbol declarations
  MAINTAINERS: Add include/linux/vdso_datastore.h to vDSO block
  vdso/gettimeofday: Rename __arch_get_vdso_u_timens_data()
  vdso/treewide: Drop GENERIC_TIME_VSYSCALL
  vdso/vsyscall: Gate update_vsyscall() behind CONFIG_GENERIC_GETTIMEOFDAY
  riscv: vdso: Drop CONFIG_GENERIC_TIME_VSYSCALL guard around syscall fallbacks
 2026-06-15 13:57:13 +05:30
Linus Torvalds
2d6d57f889 Updates for NTP/timekeeping and PTP: 
- Expand timekeeping snapshot mechanisms
 
     The various snapshot functions are mostly used for PTP to collect
     "atomic" snapshots of various involved clocks.
 
     They lack support for the recently introduced AUX clocks and do not
     provide the underlying counter value (e.g. TSC) to user space. Exposing
     the counter value snapshot allows for better control and steering.
 
     Convert the hard wired ktime_get_snapshot() to take a clock ID, which
     allows the caller to select the clock ID to be captured along with
     CLOCK_MONONOTONIC_RAW. Additionally capture the underlying hardware
     counter value and the clock source ID of the counter.
 
     Expand the hardware based snapshot capture where devices provide a
     mechanism to snapshot the hardware PTP clock and the system counter
     (usually via PCI/PTM) to support AUX clocks and also provide the
     captured counter value back to the caller and not only the clock
     timestamps derived from it.
 
   - Add a new optional read_snapshot() callback to clocksources
 
     That is required to capture atomic snapshots from clocksources which
     are derived from TSC with a scaling mechanism (e.g. Hyper-V, KVMclock).
 
     The value pair is handed back in the snapshot structure to the callers,
     so they can do the necessary correlations in a more precise way.
 
 This touches usage sites of the affected functions and data structure all
 over the tree, but stays fully backwards compatible for the existing user
 space exposed interfaces. New PTP IOCTLs will provide access to the
 extended functionality in later kernel versions.
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Merge tag 'timers-ptp-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull timekeeping updates from Thomas Gleixner:
 "Updates for NTP/timekeeping and PTP:

   - Expand timekeeping snapshot mechanisms

     The various snapshot functions are mostly used for PTP to collect
     "atomic" snapshots of various involved clocks.

     They lack support for the recently introduced AUX clocks and do not
     provide the underlying counter value (e.g. TSC) to user space.
     Exposing the counter value snapshot allows for better control and
     steering.

     Convert the hard wired ktime_get_snapshot() to take a clock ID,
     which allows the caller to select the clock ID to be captured along
     with CLOCK_MONONOTONIC_RAW. Additionally capture the underlying
     hardware counter value and the clock source ID of the counter.

     Expand the hardware based snapshot capture where devices provide a
     mechanism to snapshot the hardware PTP clock and the system counter
     (usually via PCI/PTM) to support AUX clocks and also provide the
     captured counter value back to the caller and not only the clock
     timestamps derived from it.

   - Add a new optional read_snapshot() callback to clocksources

     That is required to capture atomic snapshots from clocksources
     which are derived from TSC with a scaling mechanism (e.g. Hyper-V,
     KVMclock).

     The value pair is handed back in the snapshot structure to the
     callers, so they can do the necessary correlations in a more
     precise way.

  This touches usage sites of the affected functions and data structure
  all over the tree, but stays fully backwards compatible for the
  existing user space exposed interfaces. New PTP IOCTLs will provide
  access to the extended functionality in later kernel versions"

* tag 'timers-ptp-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (28 commits)
  ptp: vmclock: Use hw_cycles from snapshot for precise TSC pairing
  x86/kvmclock: Implement read_snapshot() for kvmclock clocksource
  clocksource/hyperv: Implement read_snapshot() for TSC page clocksource
  timekeeping: Add clocksource read_snapshot() method and hw_cycles to snapshot
  ptp: Switch to ktime_get_snapshot_id() for pre/post timestamps
  timekeeping: Add support for AUX clock cross timestamping
  timekeeping: Remove system_device_crosststamp::sys_realtime
  ALSA: hda/common: Use system_device_crosststamp::sys_systime
  wifi: iwlwifi: Use system_device_crosststamp::sys_systime
  ptp: Use system_device_crosststamp::sys_systime
  timekeeping: Prepare for cross timestamps on arbitrary clock IDs
  timekeeping: Remove ktime_get_snapshot()
  virtio_rtc: Use provided clock ID for history snapshot
  net/mlx5: Use provided clock ID for history snapshot
  igc: Use provided clock ID for history snapshot
  ice/ptp: Use provided clock ID for history snapshot
  wifi: iwlwifi: Adopt PTP cross timestamps to core changes
  timekeeping: Add CLOCK ID to system_device_crosststamp
  timekeeping: Add system_counterval_t to struct system_device_crosststamp
  timekeeping: Add CLOCK_AUX support for ktime_get_snapshot_id()
  ...
 2026-06-15 13:51:27 +05:30
Linus Torvalds
13e1a6d6a1 Interrupt core code changes: 
- Rework of /proc/interrupt handling:
 
       /proc/interrupts was subject to micro optimizations for a long time,
       but most of the low hanging fruit was left on the table. This rework
       addresses the major time consuming issues:
 
         - Printing a long series of zeros one by one via a format string
           instead of counting subsequent zeros and emitting a string
           constant.
 
         - Simplify and cache the conditions whether interrupts should be printed
 
 	- Use a proper iteration over the interrupt descriptor xarray
           instead of walking and testing one by one.
 
         - Provide helper functions for the architecture code to emit the
           architecture specific counters
 
 	- Convert the counter structure in x86 to an array, which
           simplifies the output and add mechanisms to suppress unused
           architecture interrupts, which just occupy space for
           nothing. Adopt the new core mechanisms.
 
       This adjusts the gdb scripts related to interrupt counter statitics
       to work with the new mechanisms.
 
     - Prevent a string overflow in the /proc/irq/$N/ directory name
       creation code.
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Merge tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull interrupt core updates from Thomas Gleixner:

  - Rework of /proc/interrupt handling:

    /proc/interrupts was subject to micro optimizations for a long time,
    but most of the low hanging fruit was left on the table. This rework
    addresses the major time consuming issues:

      - Printing a long series of zeros one by one via a format string
        instead of counting subsequent zeros and emitting a string
        constant.

      - Simplify and cache the conditions whether interrupts should be
        printed

      - Use a proper iteration over the interrupt descriptor xarray
        instead of walking and testing one by one.

      - Provide helper functions for the architecture code to emit the
        architecture specific counters

      - Convert the counter structure in x86 to an array, which
        simplifies the output and add mechanisms to suppress unused
        architecture interrupts, which just occupy space for nothing.
        Adopt the new core mechanisms.

    This adjusts the gdb scripts related to interrupt counter statistics
    to work with the new mechanisms.

  - Prevent a string overflow in the /proc/irq/$N/ directory name
    creation code.

* tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Add missing 's' back to thermal event printout
  genirq/proc: Speed up /proc/interrupts iteration
  genirq/proc: Runtime size the chip name
  genirq: Expose irq_find_desc_at_or_after() in core code
  genirq: Add rcuref count to struct irq_desc
  genirq/proc: Increase default interrupt number precision to four
  genirq: Calculate precision only when required
  genirq: Cache the condition for /proc/interrupts exposure
  genirq/manage: Make NMI cleanup RT safe
  genirq: Expose nr_irqs in core code
  scripts/gdb: Update x86 interrupts to the array based storage
  x86/irq: Move IOAPIC misrouted and PIC/APIC error counts into irq_stats
  x86/irq: Suppress unlikely interrupt stats by default
  x86/irq: Make irqstats array based
  genirq/proc: Utilize irq_desc::tot_count to avoid evaluation
  genirq/proc: Avoid formatting zero counts in /proc/interrupts
  x86/irq: Optimize interrupts decimals printing
  genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
 2026-06-15 13:19:41 +05:30
Linus Torvalds
36808d5e98 Driver core changes for 7.2-rc1 
- deferred probe:
   - Fix race where deferred probe timeout work could be permanently
     canceled by using mod_delayed_work()
   - Fix missing jiffies conversion in deferred_probe_extend_timeout()
   - Guard timeout extension with delayed_work_pending() to prevent
     premature firing
   - Use system_percpu_wq instead of the deprecated system_wq
   - Update deferred_probe_timeout documentation
 
 - device:
   - Replace direct struct device bitfield access (can_match, dma_iommu,
     dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
     of_node_reused, offline, offline_disabled) with flag-based
     accessors using bit operations
   - Reject devices with unregistered buses
   - Delete unused DEVICE_ATTR_PREALLOC()
   - Add low-level device attribute macros with const show/store
     callbacks, allowing device attributes to reside in read-only memory
   - Move core device attributes to read-only memory
   - Constify group array pointers in driver_add_groups() /
     driver_remove_groups(), struct bus_type, and struct device_driver
 
 - device property:
   - Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
   - Initialize all fields of fwnode_handle in fwnode_init()
   - Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
   - Allow passing struct software_node_ref_args pointers directly to
     PROPERTY_ENTRY_REF()
 
 - driver_override:
   - Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
     infrastructure, fixing a UAF from unsynchronized access to
     driver_override in bus match() callbacks
   - Remove the now-unused driver_set_override()
 
 - firmware loader:
   - Fix recursive lock deadlock in device_cache_fw_images() when async
     work falls back to synchronous execution
   - Fix device reference leak in firmware_upload_register()
 
 - platform:
   - Pass KBUILD_MODNAME through the platform driver registration macro
     to create module symlinks in sysfs for built-in drivers; move
     module_kset initialization to a pure_initcall and tegra cbb
     registration to core_initcall to ensure correct ordering
   - Pass THIS_MODULE implicitly through a coresight_init_driver() macro
 
 - sysfs:
   - Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
     WARN
   - Add return value clamping to sysfs_kf_read()
 
 - Rust:
   - ACPI:
     - Fix missing match data for PRP0001 by exporting
       acpi_of_match_device()
 
   - Auxiliary:
     - Replace drvdata() with dedicated registration data on
       auxiliary_device. drvdata() exposed the driver's bus device
       private data beyond the driver's own scope, creating ordering
       constraints and forcing the data to outlive all registrations
       that access it. Registration data is instead scoped structurally
       to the Registration object, making lifecycle ordering enforced
       by construction rather than convention.
 
   - Rust-native device driver lifetimes (HRT):
     - Allow Rust device drivers to carry a lifetime parameter on their
       bus device private data, tied to the device binding scope -- the
       interval during which a bus device is bound to a driver. Device
       resources like pci::Bar<'a> and IoMem<'a> can be stored directly
       in the driver's bus device private data with a lifetime bounded
       by the binding scope, so the compiler enforces at build time that
       they do not outlive the binding. This removes Devres indirection
       from every access site and eliminates try_access() failure paths
       in destructors.
 
       Bus driver traits use a Generic Associated Type (GAT)
       Data<'bound> to introduce the lifetime on the private data,
       rather than parameterizing the Driver trait itself. Auxiliary
       registration data, where the lifetime is not introduced by a
       trait callback but must be threaded through Registration, uses
       the ForLt trait (a type-level abstraction for types generic over
       a lifetime).
 
 - Misc:
   - Fix DT overlayed devices not probing by reverting the broken
     treewide overlay fix and re-running fw_devlink consumer pickup when
     an overlay is applied to a bound device
   - Use root_device_register() for faux bus root device; add sanity
     check for failed bus init
   - Fix dev_has_sync_state() data race with READ_ONCE() and move it to
     base.h
   - Avoid spurious device_links warning when removing a device while
     its supplier is unbinding
   - Switch ISA bus to dynamic root device
   - Fix suspicious RCU usage in kernfs_put()
   - Remove devcoredump exit callback
   - Constify devfreq_event_class
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Merge tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "Deferred probe:
   - Fix race where deferred probe timeout work could be permanently
     canceled by using mod_delayed_work()
   - Fix missing jiffies conversion in deferred_probe_extend_timeout()
   - Guard timeout extension with delayed_work_pending() to prevent
     premature firing
   - Use system_percpu_wq instead of the deprecated system_wq
   - Update deferred_probe_timeout documentation

  device:
   - Replace direct struct device bitfield access (can_match, dma_iommu,
     dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
     of_node_reused, offline, offline_disabled) with flag-based
     accessors using bit operations
   - Reject devices with unregistered buses
   - Delete unused DEVICE_ATTR_PREALLOC()
   - Add low-level device attribute macros with const show/store
     callbacks, allowing device attributes to reside in read-only memory
   - Move core device attributes to read-only memory
   - Constify group array pointers in driver_add_groups() /
     driver_remove_groups(), struct bus_type, and struct device_driver

  device property:
   - Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
   - Initialize all fields of fwnode_handle in fwnode_init()
   - Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
   - Allow passing struct software_node_ref_args pointers directly to
     PROPERTY_ENTRY_REF()

  driver_override:
   - Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
     infrastructure, fixing a UAF from unsynchronized access to
     driver_override in bus match() callbacks
   - Remove the now-unused driver_set_override()

  firmware loader:
   - Fix recursive lock deadlock in device_cache_fw_images() when async
     work falls back to synchronous execution
   - Fix device reference leak in firmware_upload_register()

  platform:
   - Pass KBUILD_MODNAME through the platform driver registration macro
     to create module symlinks in sysfs for built-in drivers; move
     module_kset initialization to a pure_initcall and tegra cbb
     registration to core_initcall to ensure correct ordering
   - Pass THIS_MODULE implicitly through a coresight_init_driver() macro

  sysfs:
   - Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
     WARN
   - Add return value clamping to sysfs_kf_read()

  Rust:
   - ACPI:

     Fix missing match data for PRP0001 by exporting
     acpi_of_match_device()

   - Auxiliary:

     Replace drvdata() with dedicated registration data on
     auxiliary_device. drvdata() exposed the driver's bus device private
     data beyond the driver's own scope, creating ordering constraints
     and forcing the data to outlive all registrations that access it.
     Registration data is instead scoped structurally to the
     Registration object, making lifecycle ordering enforced by
     construction rather than convention.

   - Rust-native device driver lifetimes (HRT):

     Allow Rust device drivers to carry a lifetime parameter on their
     bus device private data, tied to the device binding scope -- the
     interval during which a bus device is bound to a driver. Device
     resources like pci::Bar<'a> and IoMem<'a> can be stored directly in
     the driver's bus device private data with a lifetime bounded by the
     binding scope, so the compiler enforces at build time that they do
     not outlive the binding. This removes Devres indirection from every
     access site and eliminates try_access() failure paths in
     destructors.

     Bus driver traits use a Generic Associated Type (GAT) Data<'bound>
     to introduce the lifetime on the private data, rather than
     parameterizing the Driver trait itself. Auxiliary registration
     data, where the lifetime is not introduced by a trait callback but
     must be threaded through Registration, uses the ForLt trait (a
     type-level abstraction for types generic over a lifetime).

  Misc:
   - Fix DT overlayed devices not probing by reverting the broken
     treewide overlay fix and re-running fw_devlink consumer pickup when
     an overlay is applied to a bound device
   - Use root_device_register() for faux bus root device; add sanity
     check for failed bus init
   - Fix dev_has_sync_state() data race with READ_ONCE() and move it to
     base.h
   - Avoid spurious device_links warning when removing a device while
     its supplier is unbinding
   - Switch ISA bus to dynamic root device
   - Fix suspicious RCU usage in kernfs_put()
   - Remove devcoredump exit callback
   - Constify devfreq_event_class"

* tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core: (81 commits)
  software node: allow passing reference args to PROPERTY_ENTRY_REF()
  driver core: platform: set mod_name in driver registration
  coresight: pass THIS_MODULE implicitly through a macro
  kernel: param: initialize module_kset in a pure_initcall
  soc/tegra: cbb: Move driver registration from pure_initcall to core_initcall
  firmware_loader: Fix recursive lock in device_cache_fw_images()
  driver core: Use system_percpu_wq instead of system_wq
  driver core: remove driver_set_override()
  rpmsg: use generic driver_override infrastructure
  Drivers: hv: vmbus: use generic driver_override infrastructure
  cdx: use generic driver_override infrastructure
  amba: use generic driver_override infrastructure
  rust: devres: add 'static bound to Devres<T>
  samples: rust: rust_driver_auxiliary: showcase lifetime-bound registration data
  rust: auxiliary: generalize Registration over ForLt
  rust: types: add `ForLt` trait for higher-ranked lifetime support
  gpu: nova-core: separate driver type from driver data
  samples: rust: rust_driver_pci: use HRT lifetime for Bar
  rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized
  rust: pci: make Bar lifetime-parameterized
  ...
 2026-06-15 12:41:17 +05:30
Linus Torvalds
73f399414a Kbuild / Kconfig changes for 7.2 
Kbuild:
 
 - Remove broken module linking exclusion for BTF
 
 - Add documentation around how offset header files work
 
 - Include unstripped vDSO libraries in pacman packages
 
 - Bump minimum version of LLVM for building the kernel to 17.0.1 and
   clean up unnecessary workarounds
 
 - Use a context manager in run-clang-tools
 
 - Add dist macro value if present to release tag for RPM packages
 
 - Detect and report truncated buf_printf() output in modpost
 
 - Add __llvm_covfun and __llvm_covmap to section whitelist in modpost
 
 - Support Clang's distributed ThinLTO mode
 
 - Remove architecture specific configurations for AutoFDO and Propeller
   to ease individual architecture maintenance
 
 Kconfig:
 
 - Add kconfig-sym-check target to look for dangling Kconfig symbol
   references and invalid tristate literal values
 
 - Harden against potential NULL pointer dereference
 
 - Fix typo in Kconfig test comment
 
 Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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Merge tag 'kbuild-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild / Kconfig updates from Nathan Chancellor:
 "Kbuild:

   - Remove broken module linking exclusion for BTF

   - Add documentation around how offset header files work

   - Include unstripped vDSO libraries in pacman packages

   - Bump minimum version of LLVM for building the kernel to 17.0.1 and
     clean up unnecessary workarounds

   - Use a context manager in run-clang-tools

   - Add dist macro value if present to release tag for RPM packages

   - Detect and report truncated buf_printf() output in modpost

   - Add __llvm_covfun and __llvm_covmap to section whitelist in modpost

   - Support Clang's distributed ThinLTO mode

   - Remove architecture specific configurations for AutoFDO and
     Propeller to ease individual architecture maintenance

  Kconfig:

   - Add kconfig-sym-check target to look for dangling Kconfig symbol
     references and invalid tristate literal values

   - Harden against potential NULL pointer dereference

   - Fix typo in Kconfig test comment"

* tag 'kbuild-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (31 commits)
  kconfig: tests: fix typo in comment
  kconfig: Remove the architecture specific config for Propeller
  kconfig: Remove the architecture specific config for AutoFDO
  modpost: Add __llvm_covfun and __llvm_covmap to section_white_list
  kconfig: add kconfig-sym-check static checker
  kbuild: Remove unnecessary 'T' modifier in cmd_ar_builtin_fixup
  kbuild: distributed build support for Clang ThinLTO
  kbuild: move vmlinux.a build rule to scripts/Makefile.vmlinux_a
  scripts: modpost: detect and report truncated buf_printf() output
  kbuild: rpm-pkg: append %{?dist} macro to Release tag
  run-clang-tools: run multiprocessing.Pool as context manager
  compiler-clang.h: Drop explicit version number from "all" diagnostic macro
  compiler-clang.h: Remove __cleanup -Wunused-variable workaround
  kbuild: Remove check for broken scoping with clang < 17 in CC_HAS_ASM_GOTO_OUTPUT
  x86/entry/vdso32: Remove conditional omission of '.cfi_offset eflags'
  x86/module: Revert "Deal with GOT based stack cookie load on Clang < 17"
  x86/build: Drop unnecessary '-ffreestanding' addition to KBUILD_CFLAGS
  scripts/Makefile.warn: Drop -Wformat handling for clang < 16
  riscv: Drop tautological condition from TOOLCHAIN_NEEDS_OLD_ISA_SPEC
  riscv: Remove tautological condition from selection of ARCH_SUPPORTS_CFI
  ...
 2026-06-15 05:01:15 +05:30
Tejun Heo
16deef8de0 arm64: mm: Remove misleading pte_none() comment from ptep_try_set() 
This comment was thoughtlessly copied from the x86 version and doesn't
apply to arm64. Remove it.

Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20260614210209.2371030-1-tj@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 16:21:50 -07:00
Linus Torvalds
7e0e7bd60d vfs-7.2-rc1.misc 
Please consider pulling these changes from the signed vfs-7.2-rc1.misc tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
 "Features:

   - Reduce pipe->mutex contention by pre-allocating pages outside the
     lock in anon_pipe_write().

     anon_pipe_write() called alloc_page() once per page while holding
     pipe->mutex. The allocation can sleep doing direct reclaim and runs
     memcg charging, which extends the critical section and stalls any
     concurrent reader on the same mutex. Now up to 8 pages are
     pre-allocated before the mutex is taken, leftovers are recycled
     into the per-pipe tmp_page[] cache before unlock, and any remainder
     is released after unlock, keeping the allocator out of the critical
     section on both sides. On a writers x readers sweep with 64KB
     writes against a 1 MB pipe throughput improves 6-28% and average
     write latency drops 5-22%; under memory pressure - when the cost of
     holding the mutex across reclaim is highest - throughput improves
     21-48% and latency drops 17-33%. The microbenchmark is added to
     selftests.

   - uaccess/sockptr: fix the ignored_trailing logic in
     copy_struct_to_user() to behave as documented and the usize check
     in copy_struct_from_sockptr() for user pointers, and add
     copy_struct_{from,to}_bounce_buffer() and copy_struct_to_sockptr()
     helpers for upcoming users (IPPROTO_SMBDIRECT, IPPROTO_QUIC).

   - bpf: add a sleepable bpf_real_inode() kfunc that resolves the real
     inode backing a dentry via d_real_inode(). On overlayfs the inode
     attached to the dentry doesn't carry the underlying device
     information; this is used by the filesystem restriction BPF program
     that was merged into systemd.

   - docs: add guidelines for submitting new filesystems, motivated by
     the maintenance burden abandoned and untestable filesystems impose
     on VFS developers, blocking infrastructure work like folio
     conversions and iomap migration.

  Fixes:

   - libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
     and drop the now-redundant assignments in callers. This began as a
     one-line dma-buf fix for a path_noexec() warning; a pseudo
     filesystem has no reason not to set SB_I_NOEXEC. All init_pseudo()
     callers were audited: the only visible effect is on dma-buf where
     SB_I_NOEXEC silences the warning.

   - Handle set_blocksize() failures in legacy filesystems (bfs, hpfs,
     qnx4, jfs, befs, affs, isofs, minix, ntfs3, omfs). Mounting a
     device with a sector size > PAGE_SIZE crashed roughly half of them;
     the rest had the same missing error handling pattern. Plus a
     follow-up releasing the superblock buffer_head when setting the
     minix v3 block size fails.

   - mount: honour SB_NOUSER in the new mount API.

   - fs/fcntl: fix a SOFTIRQ-unsafe lock order in fasync signaling by
     switching the process-group paths of send_sigio() and send_sigurg()
     from read_lock(&tasklist_lock) to RCU, matching the single-PID
     path.

   - vfs: add an FS_USERNS_DELEGATABLE flag and set it for NFS, fixing
     delegated NFS mounts (fsopen() in a container with the mount
     performed by a privileged daemon) that broke when non-init
     s_user_ns was tied to FS_USERNS_MOUNT.

   - selftests/namespaces: fix a hang in nsid_test where an unreaped
     grandchild kept the TAP pipe write-end open, a waitpid(-1) race in
     listns_efault_test, and a false FAIL on kernels without listns()
     where the tests should SKIP.

   - filelock: fix the break_lease() stub signature for
     CONFIG_FILE_LOCKING=n.

   - init/initramfs_test: wait for the async initramfs unpacking before
     running; the test and do_populate_rootfs() share the parser state.

   - fs/coredump: reduce redundant log noise in
     validate_coredump_safety().

   - iomap: pass the correct length to fserror_report_io() in
     __iomap_write_begin().

   - backing-file: fix the backing_file_open() kerneldoc.

  Cleanups:

   - initramfs: refactor the cpio hex header parsing to use hex2bin()
     instead of the hand-rolled simple_strntoul() which is reverted, and
     extend the initramfs KUnit tests to cover header fields with 0x
     prefixes.

   - Replace __get_free_pages() and friends with kmalloc()/kzalloc()
     across quota, proc, ocfs2/dlm, nilfs2, nfs, nfsd, libfs, jfs, jbd2,
     isofs, fuse, select, namespace, configfs, binfmt_misc, bfs, and the
     do_mounts init code - part of the larger work of replacing page
     allocator calls with kmalloc().

   - Use clear_and_wake_up_bit() in unlock_buffer() and
     journal_end_buffer_io_sync() instead of open-coding the sequence.

   - Drop unused VFS exports: unexport drop_super_exclusive(), remove
     start_removing_user_path_at(), and fold __start_removing_path()
     into start_removing_path().

   - fs/read_write: narrow the __kernel_write() export with
     EXPORT_SYMBOL_FOR_MODULES().

   - vfs: uapi: retire octal and hex constants in favor of (1 << n) for
     the O_ flags. Finding a free bit for a new flag across the
     architectures was needlessly hard with the mixed bases.

   - dcache: add extra sanity checks of dead dentries in dentry_free()
     via a new DENTRY_WARN_ONCE() that also prints d_flags.

   - iov_iter: use kmemdup_array() in dup_iter() to harden the
     allocation against multiplication overflow.

   - fs/pipe: write to ->poll_usage only once.

   - vfs: remove an always-taken if-branch in find_next_fd().

   - dcache: use kmalloc_flex() for struct external_name in __d_alloc().

   - namei: use QSTR() instead of QSTR_INIT() in path_pts().

   - sync_file_range: delete dead S_ISLNK code.

   - Comment fixes: retire a stale comment in fget_task_next() and fix
     assorted spelling mistakes"

* tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (73 commits)
  backing-file: fix backing_file_open() kerneldoc parameter
  iomap: pass the correct len to fserror_report_io in __iomap_write_begin
  vfs: add FS_USERNS_DELEGATABLE flag and set it for NFS
  filelock: fix break_lease() stub signature for CONFIG_FILE_LOCKING=n
  vfs: uapi: retire octal and hex numbers in favor of (1 << n) for O_ flags
  bpf: add bpf_real_inode() kfunc
  fs/read_write: Do not export __kernel_write() to the entire world
  libfs: drop redundant SB_I_NOEXEC/SB_I_NODEV in init_pseudo() callers
  libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
  mount: honour SB_NOUSER in the new mount API
  fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling
  selftests/pipe: add pipe_bench microbenchmark
  fs/pipe: pre-allocate pages outside pipe->mutex in anon_pipe_write
  fs: retire stale comment in fget_task_next()
  fs: fix spelling mistakes in comment
  bfs: replace get_zeroed_page() with kzalloc()
  binfmt_misc: replace __get_free_page() with kmalloc()
  configfs: replace __get_free_pages() with kzalloc()
  fs/namespace: use __getname() to allocate mntpath buffer
  fs/select: replace __get_free_page() with kmalloc()
  ...
 2026-06-15 03:59:45 +05:30
Linus Torvalds
9c9e6bd4cc kernel-7.2-rc1.task_exec_state 
Please consider pulling these changes from the signed kernel-7.2-rc1.task_exec_state tag.
 
 Thanks!
 Christian
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Merge tag 'kernel-7.2-rc1.task_exec_state' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull task_exec_state updates from Christian Brauner:
 "This introduces a new per-task task_exec_state structure and relocates
  the dumpable mode and the user namespace captured at execve() from
  mm_struct onto it. It stays attached to the task for its full
  lifetime.

  __ptrace_may_access() and several /proc owner and visibility checks
  need to consult two pieces of state for any observable task, including
  zombies that have already gone through exit_mm(): the dumpable mode
  and the user namespace captured at execve(). Both live on mm_struct
  today, which exit_mm() clears from the task long before the task is
  reaped. A reader that races with do_exit() observes task->mm == NULL
  and either fails the check or falls back to init_user_ns - which
  denies legitimate access to non-dumpable zombies that were running in
  a nested user namespace.

  mm_struct loses ->user_ns and the dumpability bits in ->flags.
  MMF_DUMPABLE_BITS is reserved so the MMF_DUMP_FILTER_* layout exposed
  via /proc/<pid>/coredump_filter stays stable. task->user_dumpable and
  its exit_mm() snapshot are removed.

  task_exec_state is the privilege domain established by an execve().
  Within a thread group it is shared via refcount; across thread groups
  each task has its own:

   - CLONE_VM siblings (thread-group members, io_uring workers)
     refcount-share the parent's exec_state.

   - Non-CLONE_VM clones (fork(), vfork() without CLONE_VM) allocate a
     fresh exec_state inheriting the parent's dumpable mode and user_ns.

   - execve() in the child allocates a fresh instance and installs it
     under task_lock + exec_update_lock via task_exec_state_replace().

   - Credential changes (setresuid, capset, ...) and
     prctl(PR_SET_DUMPABLE) update dumpability on the current task's
     exec_state, i.e., on the thread group's shared instance.

  On top of this exec_mmap() no longer tears down the old mm while
  holding exec_update_lock for writing and cred_guard_mutex. Neither
  lock is needed for that: exec_update_lock only exists to make the mm
  swap atomic with the later commit_creds() and all its readers operate
  on the new mm; none looks at the detached old mm.

  The cost was real: __mmput() runs exit_mmap() over the entire old
  address space and can block in exit_aio() waiting for in-flight AIO,
  so execve() of a large process blocked ptrace_attach() and every
  exec_update_lock reader for the duration of the teardown.

  The old mm is now stashed in bprm->old_mm and released from
  setup_new_exec() after both locks are dropped, with a backstop in
  free_bprm() for the error paths"

* tag 'kernel-7.2-rc1.task_exec_state' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  exec: free the old mm outside the exec locks
  exec_state: relocate dumpable information
  ptrace: add ptracer_access_allowed()
  exec: introduce struct task_exec_state
  sched/coredump: introduce enum task_dumpable
 2026-06-15 03:00:58 +05:30
Will Deacon
61c19a9feb Merge branch 'for-next/sysregs' into for-next/core 
* for-next/sysregs:
  arm64/sysreg: Add HDBSS related register information
 2026-06-14 12:18:27 +01:00
Will Deacon
3594da9b7a Merge branch 'for-next/mpam' into for-next/core 
* for-next/mpam:
  arm_mpam: Update architecture version check for MPAM MSC
  arm64: cpufeature: Add support for the MPAM v0.1 architecture version
 2026-06-14 12:18:06 +01:00
Will Deacon
df3daf49a8 Merge branch 'for-next/mm' into for-next/core 
* for-next/mm: (24 commits)
  Revert "arm64: mm: Unmap kernel data/bss entirely from the linear map"
  Revert "arm64: mm: Defer remap of linear alias of data/bss"
  arm64/mm: Rename ptdesc_t
  arm64: mm: Defer remap of linear alias of data/bss
  KVM: arm64: Omit tag sync on stage-2 mappings of the zero page
  arm64: Avoid double evaluation of __ptep_get()
  kasan: Move generic KASAN page tables out of BSS too
  arm64: Rename page table BSS section to .bss..pgtbl
  arm64: mm: Unmap kernel data/bss entirely from the linear map
  arm64: mm: Map the kernel data/bss read-only in the linear map
  mm: Make empty_zero_page[] const
  sh: Drop cache flush of the zero page at boot
  powerpc/code-patching: Avoid r/w mapping of the zero page
  arm64: mm: Don't abuse memblock NOMAP to check for overlaps
  arm64: Move fixmap and kasan page tables to end of kernel image
  arm64: mm: Permit contiguous attribute for preliminary mappings
  arm64: kfence: Avoid NOMAP tricks when mapping the early pool
  arm64: mm: Permit contiguous descriptors to be manipulated
  arm64: mm: Preserve non-contiguous descriptors when mapping DRAM
  arm64: mm: Preserve existing table mappings when mapping DRAM
  ...
 2026-06-14 12:17:33 +01:00
Will Deacon
917578e25d Merge branch 'for-next/misc' into for-next/core 
* for-next/misc:
  arm64: arch_timer: reuse arch_timer_read_cnt{p,v}ct_el0() helpers
  arm64: patching: replace min_t with min in __text_poke
  ARM64: remove unnecessary architecture-specific <asm/device.h>
  arm64: Implement _THIS_IP_ using inline asm
  arm64: panic from init_IRQ if IRQ handler stacks cannot be allocated
  arm64: smp: Do not mark secondary CPUs possible under nosmp
  arm64/daifflags: Make local_daif_*() helpers __always_inline
 2026-06-14 12:17:07 +01:00
Will Deacon
35d2b77d8d Merge branch 'for-next/fpsimd-cleanups' into for-next/core 
* for-next/fpsimd-cleanups:
  arm64: fpsimd: Remove <asm/fpsimdmacros.h>
  arm64: fpsimd: Move SME save/restore inline
  arm64: fpsimd: Move sve_flush_live() inline
  arm64: fpsimd: Move SVE save/restore inline
  arm64: fpsimd: Use opaque type for SME state
  arm64: fpsimd: Use opaque type for SVE state
  arm64: fpsimd: Move fpsimd save/restore inline
  arm64: fpsimd: Split FPSR/FPCR from SVE save/restore
  arm64: sysreg: Add FPCR and FPSR
  arm64: fpsimd: Move sve_get_vl() and sme_get_vl() inline
  arm64: fpsimd: Use assembler for baseline SME instructions
  arm64: fpsimd: Use assembler for SVE instructions
  arm64: fpsimd: Remove sve_set_vq() and sme_set_vq()
  arm64: fpsimd: Fold sve_init_regs() into do_sve_acc()
  KVM: arm64: pkvm: Remove struct cpu_sve_state
  KVM: arm64: pkvm: Save host FPMR in host cpu context
  KVM: arm64: Don't override FFR save/restore argument
  KVM: arm64: Don't include <asm/fpsimdmacros.h>
  arm64: fpsimd: Fix type mismatch in sme_{save,load}_state()
  arm64: fpsimd: Fix type mismatch in sve_{save,load}_state()
 2026-06-14 12:16:59 +01:00
Will Deacon
0fccc93585 Merge branch 'for-next/errata' into for-next/core 
* for-next/errata:
  arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU
  arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU
  arm64: errata: Mitigate TLBI errata on various Arm CPUs
  arm64: cputype: Add C1-Premium definitions
  arm64: cputype: Add C1-Ultra definitions
  arm64: kernel: Disable CNP on HiSilicon HIP09
  arm64: cpufeature: Add WORKAROUND_DISABLE_CNP capability
  arm64: proton-pack: use sysfs_emit in sysfs show functions
  arm64: errata: Reformat table for IDs
 2026-06-14 12:16:30 +01:00
Joerg Roedel
dd8a3c6cd5 Merge branches 'apple/dart', 'arm/smmu/updates', 'arm/smmu/bindings', 'rockchip', 'verisilicon', 'riscv', 'intel/vt-d', 'amd/amd-vi' and 'core' into next 2026-06-12 14:57:23 +02:00
Ryan Chen
9e84fd546d
arm64: dts: aspeed: Fix duplicate pinctrl labels and address scheme 
A report from shashiko-bot highlighted some concerns concurrent to
application of the series[1].

Fix duplicate pinctrl_tach{0-15} and pinctrl_n{cts,dcd,dsr,ri}5 labels
in aspeed-g7-soc1-pinctrl.dtsi. These didn't cause errors from dtc
because dtc accepts duplicate labels for duplicate nodes specified
through a node reference[2].

Drop the cpu-index from secondary/tertiary container nodes: reduce
the "#address-cells" from 2 to 1 and update unit-addresses and reg
accordingly. The 2-cell scheme was proposed in an early mailing list
sketch to prompt discussion[3], but the design evolved in ways that made
it unnecessary.

Also remove URL comments from the DTS. The links were to comments in
the kernel sources with discussion justifying the approach, but are not
necessary to carry forward.

[arj: Extend discussion in the commit message]

Link: https://lore.kernel.org/all/20260609025708.ADBFE1F00893@smtp.kernel.org/ [1]
Link: https://lore.kernel.org/all/b226339bb2abe42ce23e90eadbc654b426131083.camel@codeconstruct.com.au/ [2]
Link: https://lore.kernel.org/all/1a2ca78746e00c2ec4bfc2953a897c48376ed36f.camel@codeconstruct.com.au/ [3]
Suggested-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Fixes: e77bb5dc57 ("arm64: dts: aspeed: Add initial AST27xx SoC device tree")
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Link: https://patch.msgid.link/20260611-dtsi_fix-v1-1-ef2b7cd86d6d@aspeedtech.com
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20260612-aspeed-arm64-dt-v1-1-d1d1a4737905@codeconstruct.com.au
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2026-06-12 12:39:49 +02:00
Paolo Bonzini
751d041a13 KVM/arm64 updates for 7.2 
* New features:
 
   - None. Zilch. Nada. Que dalle.
 
 * Fixes and other improvements:
 
   - Significant cleanup of the vgic-v5 PPI support which was merged in
     7.1. This makes the code more maintainable, and squashes a couple
     of bugs in the meantime.
 
   - Set of fixes for the handling of the MMU in an NV context,
     particularly VNCR-triggered faults. S1POE support is fixed
     as well.
 
   - Large set of pKVM fixes, mostly addressing recurring issues
     around hypervisor tracking of donated pages in obscure cases
     where the donation could fail and leave things in a bizarre
     state.
 
   - Fixes for the so-called "lazy vgic init", which resulted in
     sleeping operations in non-preemptible sections. This turned
     out to be far more invasive than initially expected...
 
   - Reduce the overhead of L1/L2 context switch by not touching
     the FP registers.
 
   - Fix the way non-implemented page sizes are dealt with when
     a guest insist on using them for S2 translation.
 
   - The usual set of low-impact fixes and cleanups all over the map.
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Merge tag 'kvmarm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for 7.2

* New features:

  - None. Zilch. Nada. Que dalle.

* Fixes and other improvements:

  - Significant cleanup of the vgic-v5 PPI support which was merged in
    7.1. This makes the code more maintainable, and squashes a couple
    of bugs in the meantime.

  - Set of fixes for the handling of the MMU in an NV context,
    particularly VNCR-triggered faults. S1POE support is fixed
    as well.

  - Large set of pKVM fixes, mostly addressing recurring issues
    around hypervisor tracking of donated pages in obscure cases
    where the donation could fail and leave things in a bizarre
    state.

  - Fixes for the so-called "lazy vgic init", which resulted in
    sleeping operations in non-preemptible sections. This turned
    out to be far more invasive than initially expected...

  - Reduce the overhead of L1/L2 context switch by not touching
    the FP registers.

  - Fix the way non-implemented page sizes are dealt with when
    a guest insist on using them for S2 translation.

  - The usual set of low-impact fixes and cleanups all over the map.
 2026-06-12 10:51:42 +02:00
Marc Zyngier
1ee27dacbe Merge branch kvm-arm64/nv-mmu-7.2 into kvmarm-master/next 
* kvm-arm64/nv-mmu-7.2:
  : .
  : Assorted collection of fixes for NV MMU bugs
  :
  : - Correctly plug AT S1E1A handling in the emulation backend
  :
  : - Make CPTR_EL2.E0POE depend on FEAT_S1POE
  :
  : - Drop the reference on the page if the VNCR translation
  :   races with an MMU notifier
  :
  : - Correctly synthesise an SEA if a page table walk fails due
  :   to a guest error
  :
  : - Fully invalidate the VNCR TLB and fixmap when translating
  :   for a new VNCR
  :
  : - Restart S1 walk when the S2 walk fails due to a race condition
  :
  : - Correctly return -EAGAIN when a S1 walk fails
  :
  : - Fix block mapping validity check in stage-1 walker for 64kB pages
  :
  : - Fix potential NULL dereference when performing an EL2 TLBI targeting
  :   the VNCR page
  :
  : - Hold kvm->mmu_lock while initialising the vncr_tlb pointer
  : .
  KVM: arm64: nv: Hold kvm->mmu_lock while initialising vcpu->arch.vncr_tlb
  KVM: arm64: nv: Avoid dereferencing NULL VNCR pseudo-TLB
  KVM: arm64: Fix block mapping validity check in stage-1 walker
  KVM: arm64: nv: Restart stage-1 walk if stage-2 desc update fails
  KVM: arm64: Restart instruction upon race in __kvm_at_s12()
  KVM: arm64: nv: Inject SEA TTW when desc update can't write to GPA
  KVM: arm64: nv: Fully update VNCR fixmap state in kvm_translate_vncr()
  KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier
  arm64: cpufeature: Expose ID_AA64ISAR2_EL1.ATS1A to KVM
  KVM: arm64: Wire AT S1E1A in the system instruction handling table
  KVM: arm64: Key CPTR_EL2.E0POE propagation on FEAT_S1POE

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:29:34 +01:00
Marc Zyngier
bd2ed0733b Merge branch kvm-arm64/misc-7.2 into kvmarm-master/next 
* kvm-arm64/misc-7.2:
  : .
  : - Check for a valid vcpu pointer upon deactivating traps when handling
  :   a HYP panic in VHE mode
  :
  : - Make the __deactivate_fgt() macro use its arguments instead of the
  :   surrounding context
  :
  : - Don't bother with initialising TPIDR_EL2 in the hyp stubs, as this
  :   is already taken care of in more obvious places
  :
  : - Drop the unused kvm_arch pointer passed to __load_stage2()
  :
  : - Return -EOPNOTSUPP when a hypercall fails for some reason, instead of
  :   returning whatever was in the result structure
  :
  : - Make the ITS ABI selection helpers return void, which avoids wondering
  :   about the nature of the return code (always 0)
  : .
  KVM: arm64: vgic-its: Make ABI commit helpers return void
  KVM: arm64: Set a Linux errno on SMCCC error in kvm_call_hyp_nvhe()
  KVM: arm64: Remove @arch from __load_stage2()
  KVM: arm64: Don't populate TPIDR_EL2 in finalise_el2()
  KVM: arm64: Fix __deactivate_fgt macro parameter typo
  KVM: arm64: Guard against NULL vcpu on VHE hyp panic path

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:29:31 +01:00
Marc Zyngier
8411f1534a Merge branch kvm-arm64/vgic-v5-PPI-fixes into kvmarm-master/next 
* kvm-arm64/vgic-v5-PPI-fixes:
  : .
  : Substantial cleanup of the vgic-v5 PPI support. From the original
  : cover letter:
  :
  : "With the GICv5 PPi support merged in, it has become obvious that a few
  :  things could be improved, both from the correctness and maintainability
  :  angles."
  : .
  KVM: arm64: Fix arch timer interrupts for GICv3-on-GICv5 guests
  irqchip/gic-v5: Immediately exec priority drop following activate
  Documentation: KVM: Clarify that PMU_V3_IRQ IntID requirements for GICv5
  Documentation: KVM: Fix typos in VGICv5 documentation
  KVM: arm64: selftests: Improve error handling for GICv5 PPI selftest
  KVM: arm64: selftests: Cleanup unused vars in GICv5 PPI selftest
  KVM: arm64: selftests: Add missing GIC CDEN to no-vgic-v5 selftest
  KVM: arm64: vgic-v5: Atomically assign bits to PPI DVI bitmap
  KVM: arm64: vgic-v5: Add missing trap handing for NV triage
  KVM: arm64: vgic-v5: Limit support to 64 PPIs
  KVM: arm64: vgic: Rationalise per-CPU irq accessor
  KVM: arm64: vgic-v5: Drop defensive checks from vgic_v5_ppi_queue_irq_unlock()
  KVM: arm64: vgic: Consolidate vgic_allocate_private_irqs_locked()
  KVM: arm64: vgic: Constify struct irq_ops usage
  KVM: arm64: vgic-v5: Drop pointless ARM64_HAS_GICV5_CPUIF check
  KVM: arm64: vgic-v5: Remove use of __assign_bit() with a constant
  KVM: arm64: vgic-v5: Move PPI caps into kvm_vgic_global_state
  KVM: arm64: vgic-v5: Add for_each_visible_v5_ppi() iterator

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:08:31 +01:00
Marc Zyngier
35c060e8d6 Merge branch kvm-arm64/pkvm-fixes-7.2 into kvmarm-master/next 
* kvm-arm64/pkvm-fixes-7.2:
  : .
  : Assorted pKVM fixes for 7.2:
  :
  : - Ensure that the vcpu memcache is filled in a number of cases (donate,
  :   share, selftest)
  :
  : - Fix vmemmap page order handling by resetting it when initialising the
  :   memory pool
  :
  : - Don't leak page references on failed memory donation
  :
  : - Add sanity-check for refcounted pages when donating/sharing pages
  :
  : - Clear __hyp_running_vcpu on state flush
  :
  : - Check LR upper bound against a trusted value
  :
  : - Assorted fixes for the host-side tracking of the pages shared with
  :   EL2 as a result of some Sashiko testing from Fuad
  :
  : - Correctly forward HCR_EL2.VSE from host to guest, so that protected
  :   guests can see SErrors
  : .
  KVM: arm64: Roll back partial shares on kvm_share_hyp() failure
  KVM: arm64: Avoid host/hyp share desync on unshare hypercall failure
  KVM: arm64: Free hyp-share tracking node when share hypercall fails
  KVM: arm64: Flush HCR_EL2.VSE to deliver SErrors to pKVM guests
  KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU
  KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU
  KVM: arm64: Pre-check vcpu memcache for host->guest donate
  KVM: arm64: Pre-check vcpu memcache for host->guest share
  KVM: arm64: Seed pkvm_ownership_selftest vcpu memcache
  KVM: arm64: Add fail-safe for refcounted pages in __pkvm_hyp_donate_host
  KVM: arm64: Fix __pkvm_init_vm error path
  KVM: arm64: Reset page order in pKVM hyp_pool

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:08:25 +01:00
Marc Zyngier
27086d066d Merge branch kvm-arm64/nv-granule-sizes into kvmarm-master/next 
* kvm-arm64/nv-granule-sizes:
  : .
  : Tidying up of the behaviour when the selected page size in not
  : implemented, courtesy of Wei-Lin Chang. From the initial cover
  : letter:
  :
  : "This small series fixes the granule size selection for software stage-1
  :  and stage-2 walks. Previously we treat the guest's TCR/VTCR.TGx as-is
  :  and use the encoded granule size for the walks. However this is
  :  incorrect if the granule sizes are not advertised in the guest's
  :  ID_AA64MMFR0_EL1.TGRAN*. The architecture specifies that when an
  :  unsupported size is programed in TGx, it must be treated as an
  :  implemented size. Fix this by choosing an available one while
  :  prioritizing PAGE_SIZE."
  : .
  KVM: arm64: Fallback to a supported value for unsupported guest TGx
  KVM: arm64: nv: Use literal granule size in TLBI range calculation
  KVM: arm64: Factor out TG0/1 decoding of VTCR and TCR
  KVM: arm64: nv: Rename vtcr_to_walk_info() to setup_s2_walk()

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:04:24 +01:00
Marc Zyngier
d1f0ed520b Merge branch kvm-arm64/nv-fp-elision into kvmarm-master/next 
* kvm-arm64/nv-fp-elision:
  : .
  : Significantly reduce the overhead of the context switch between L1 and
  : L2 guests by eliding the save/restore of the FP/SIMD/SVE registers, as
  : this state is shared between the two guests, and therefore can be left
  : live.
  : .
  KVM: arm64: nv: Don't save/restore FP register during a nested ERET or exception
  KVM: arm64: nv: Track L2 to L1 exception emulation

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:03:57 +01:00
Marc Zyngier
a1b504eda4 Merge branch kvm-arm64/no-lazy-vgic-init into kvmarm-master/next 
* kvm-arm64/no-lazy-vgic-init:
  : .
  : Fix an ugly situation where the vgic lazy init could happen in
  : non-preemtible contexts such as vcpu reset, resulting in lockdep
  : splats.
  :
  : This requires revamping the way in-kernel emulation of devices
  : (timers, PMU) are presenting their interrupt to the vgic, and
  : make sure there is no need to init the vgic on the back of that.
  : .
  KVM: arm64: vgic-v2: Don't init the vgic on in-kernel interrupt injection
  KVM: arm64: vgic-v2: Force vgic init on injection outside the run loop
  KVM: arm64: pmu: Kill the PMU interrupt level cache
  KVM: arm64: timer: Kill the per-timer irq level cache
  KVM: arm64: Simplify userspace notification of interrupt state
  KVM: arm64: timer: Repaint kvm_timer_{should,irq_can}_fire() to kvm_timer_{pending,enabled}()

Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:03:24 +01:00
Jackie Liu
650c4704b9 KVM: arm64: vgic-its: Make ABI commit helpers return void 
The return values of vgic_its_set_abi() and vgic_its_commit_v0() are always
0 and do not carry useful error information. Simplify by changing them to
void.

Suggested-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://patch.msgid.link/20260604075147.53299-1-liu.yun@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
 2026-06-12 09:01:21 +01:00
Arnd Bergmann
cccde8de2c arm64: BST C1200 eMMC defconfig for v7.2 
Black Sesame Technologies:
 
 Enable eMMC controller on BST C1200 CDCU1.0 board:
    - Enable CONFIG_MMC_SDHCI_BST=y in arm64 defconfig
 
 The MMC driver was merged via mmc-next in v7.1-rc1.
 This is the remaining defconfig piece.
 
 Signed-off-by: Gordon Ge <gordon.ge@bst.ai>
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Merge tag 'bst-arm64-emmc-driver-defconfig-for-v7.2' of https://github.com/BlackSesame-SoC/linux into soc/defconfig

arm64: BST C1200 eMMC defconfig for v7.2

Black Sesame Technologies:

Enable eMMC controller on BST C1200 CDCU1.0 board:
   - Enable CONFIG_MMC_SDHCI_BST=y in arm64 defconfig

The MMC driver was merged via mmc-next in v7.1-rc1.
This is the remaining defconfig piece.

* tag 'bst-arm64-emmc-driver-defconfig-for-v7.2' of https://github.com/BlackSesame-SoC/linux:
  arm64: defconfig: enable BST SDHCI controller

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2026-06-12 09:03:41 +02:00
Arnd Bergmann
c936d73057 arm64: BST C1200 eMMC DTS for v7.2 
Black Sesame Technologies:
 
  Enable eMMC controller on BST C1200 CDCU1.0 board:
     - Add mmc0 node in bstc1200.dtsi (DWCMSHC SDHCI controller)
     - Add fixed clock definition and reserved SRAM bounce buffer
     - Enable mmc0 with 8-bit bus on CDCU1.0 ADAS 4C2G board
 The MMC driver was merged via mmc-next in v7.1-rc1.
 this is the remaining DTS piece.
 
 Signed-off-by: Gordon Ge <gordon.ge@bst.ai>
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Merge tag 'bst-arm64-emmc-driver-dts-for-v7.2' of https://github.com/BlackSesame-SoC/linux into soc/dt

arm64: BST C1200 eMMC DTS for v7.2

Black Sesame Technologies:

 Enable eMMC controller on BST C1200 CDCU1.0 board:
    - Add mmc0 node in bstc1200.dtsi (DWCMSHC SDHCI controller)
    - Add fixed clock definition and reserved SRAM bounce buffer
    - Enable mmc0 with 8-bit bus on CDCU1.0 ADAS 4C2G board
The MMC driver was merged via mmc-next in v7.1-rc1.
this is the remaining DTS piece.

Signed-off-by: Gordon Ge <gordon.ge@bst.ai>

* tag 'bst-arm64-emmc-driver-dts-for-v7.2' of https://github.com/BlackSesame-SoC/linux:
  arm64: dts: bst: enable eMMC controller in C1200

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2026-06-12 09:01:32 +02:00
Albert Yang
22ca5df7c9 arm64: defconfig: enable BST SDHCI controller 
Enable CONFIG_MMC_SDHCI_BST to support eMMC on Black Sesame
Technologies C1200 boards.

Signed-off-by: Albert Yang <yangzh0906@thundersoft.com>
Acked-by: Gordon Ge <gordon.ge@bst.ai>
Signed-off-by: Gordon Ge <gordon.ge@bst.ai>
 2026-06-12 14:21:04 +08:00
Albert Yang
6191a61ec9 arm64: dts: bst: enable eMMC controller in C1200 
Add mmc0 node for the DWCMSHC SDHCI controller with basic configuration
(disabled by default) and fixed clock definition in bstc1200.dtsi.

Enable mmc0 with board-specific configuration including 8-bit bus
width and reserved SRAM bounce buffer on the CDCU1.0 ADAS 4C2G board.

The bounce buffer in reserved SRAM addresses hardware constraints
where the eMMC controller cannot access main system memory through
SMMU due to a hardware bug, and all DRAM is located outside the
4GB boundary.

Signed-off-by: Albert Yang <yangzh0906@thundersoft.com>
Acked-by: Gordon Ge <gordon.ge@bst.ai>
Signed-off-by: Gordon Ge <gordon.ge@bst.ai>
 2026-06-12 14:17:45 +08:00
Eric Biggers
be6498ca1c hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/ 
Since this file just implements a hwrng driver, move it into
drivers/char/hw_random/.  Rename the kconfig option accordingly as well.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2026-06-12 09:56:26 +08:00