mirror of
https://github.com/torvalds/linux.git
synced 2026-09-24 06:24:02 +02:00
master
2615 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
0fe792fa9b |
ARM updates for 7.3-rc1
- add module description for kprobes testing module
- remove references to CONFIG_CPU_ARM92x_CPU_IDLE options
- expand comment in ARM's __switch_to()
Also a number of fixes that missed 7.2:
- disable broken eBPF on RiscPC
- more BKPT fixes (guys, it's a *very* bad idea when everyone uses
the BKPT instruction for their own differing purposes.)
- another preempt-rt fix, this time for siglock / CPU timers
- fix another path where we try to send signals to processes
with interrupts disabled
- acquire mmap write lock for show_pte() with user faults
-----BEGIN PGP SIGNATURE-----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=KcxS
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux
Pull arm updates from Russell King:
"Updates for 7.3:
- add module description for kprobes testing module
- remove references to CONFIG_CPU_ARM92x_CPU_IDLE options
- expand comment in ARM's __switch_to()
Also a number of fixes that missed 7.2:
- disable broken eBPF on RiscPC
- more BKPT fixes (guys, it's a *very* bad idea when everyone uses
the BKPT instruction for their own differing purposes)
- another preempt-rt fix, this time for siglock / CPU timers
- fix another path where we try to send signals to processes with
interrupts disabled
- acquire mmap write lock for show_pte() with user faults"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
ARM: 9480/1: entry: expand comment in __switch_to
ARM: 9478/1: Remove references to removed CONFIG_CPU_ARM92x_CPU_IDLE options
ARM: 9485/1: mm: acquire mmap write lock around show_pte() for user faults
ARM: 9484/1: enable interrupts when unhandled user faults are triggered
ARM: 9483/1: select HAVE_POSIX_CPU_TIMERS_TASK_WORK
ARM: 9481/2: breakpoint: CFI breakpoints only on demand
ARM: 9477/1: Disable broken eBPF JIT on the Risc PC
ARM: 9473/1: kprobes: test: add MODULE_DESCRIPTION
|
||
|
Russell King (Oracle)
|
1a89abc009 | Merge branches 'fixes' and 'misc' into for-linus | ||
|
Linus Torvalds
|
ed3b875bea |
mm.git review status for mm-hotfixes-stable..mm-stable
Everything:
Total patches: 501
Reviews/patch: 1.66
Reviewed rate: 70%
Excluding DAMON:
Total patches: 356
Reviews/patch: 2.26
Reviewed rate: 90%
Excluding DAMON and selftests:
Total patches: 329
Reviews/patch: 2.31
Reviewed rate: 92%
Excluding DAMON, selftests and maple_tree:
Total patches: 328
Reviews/patch: 2.31
Reviewed rate: 92%
Summary of patch series in this merge:
- The 2 patch series "mm: drop "sub" prefix from various places" from
Dev Jain implements some page->folio conversion and a naming cleanup.
- The 2 patch series "mm/kasan: remove redundant initialization for
kasan_flag_write_only" from Igor Putko provides some KASAN cleanup work.
- The 2 patch series "mm/filemap: reduce unnecessary xarray lookups"
from Chi Zhiling provides a small speedup in the pagecaache read code.
- The 4 patch series "mm/percpu: Fix possible NOFS/NOIO reclaim
recursion" from Kaitao Cheng improves a few things in the vmalloc code -
mainly the avoidance of GFP_KERNEL allocations when the caller asked for
GFP_NOFS or GFP_NOIO.
- The 3 patch series "mm/kmemleak: avoid soft lockup when scanning task
stacks" from Breno Leitao avoids a soft lockup watchdog trigger from the
kmemleak scanning code in extreme situations.
- The 6 patch series "mm/page_owner: misc cleanups" from Ye Liu is a
collection of unrelated cleanups to the page_owner code. For some
reason lots of people have been working on the page_owner code this
cycle.
- The 4 patch series "mm: convert to walk_page_range_vma() to eliminate
find_vma()" from Kefeng Wang simplifies and accelerates the page walking
library function.
- The 3 patch series "mm/migrate: preparatory cleanups for batch copy
and offload" from Shivank Garg implements cleanups in the migration
code.
- The 4 patch series "mm/page_owner: add per-fd filter infrastructure
for print_mode and NUMA filtering" from Zhen Ni provides per-fd
filtering to page_owner in order to reduce the sometimes vast amount of
output it can produce.
- The 19 patch series "mm: Refactor bootmem gigantic hugepage
allocation" from Muchun Song is a "set of fixes and preparatory cleanups
around bootmem HugeTLB handling, sparse initialization ordering, and
related vmemmap setup".
- The 4 patch series "mm/zsmalloc: reduce lock contention in zs_free()"
from Wenchao Hao reduces lock contention in zs_free(), which dominates
the unmap path under memory pressure on Android (LMK kills) and on x86
servers running zswap-heavy workloads. Up to 1.83x improvement in
microbenchmarking.
- The 2 patch series "move alloc_tag.c file under mm/" from Suren
Baghdasaryan does that.
- The 6 patch series "samples/damon: handle damon_{start,stop}()
failures" from SJ Park fixes improper handling of damon_start(),
damon_stop(), and damon_call() failures across DAMON sample modules to
prevent potential memory leaks, operation disruptions and use-after-free
bugs.
- The 11 patch series "mm/damon/sysfs: kobject_del() directories that
users can create/remove" from SJ Park resolves an issue where delayed
sysfs directory removal under CONFIG_DEBUG_KOBJECT_RELEASE causes
creation failures due to duplicate directory names by adding missing
kobject_del() calls before creating new directories.
- The 3 patch series "mm: cleanup clear_not_present_full_ptes()" from
David Hildenbrand cleans up the core pte handling code.
- The 3 patch series "selftests/damon: misc fixes for test bugs" from
Kunwu Chan fixes several bugs in the DAMON selftests.
- The 2 patch series "selftests/damon: fix memcg_path staging handling"
from Cheng Nie fixes a bug in _damon_sysfs.py for damos_filter
memcg_path setup, and adds a test case for it in sysfs.py.
- The 2 patch series "selftests/damon: test kdamond refresh_ms" from
Ruslan Valiyev introduces selftest coverage for DAMON's refresh_ms sysfs
feature by updating the test control module and verifying that scheme
stats update automatically without manual intervention.
- The 5 patch series "mm/damon: five misc fixups" from Akinobu Mita
contains miscellaneous DAMON fixups.
- The 2 patch series "mm/damon/core: detect internal variation above
max_nr_regions/2" from Jiayuan Chen fixes DAMON's region splitting
behavior when region counts exceed half the maximum budget by
dynamically scaling down the split fraction as the limit approaches,
preventing large regions from staying un-split, and adds corresponding
KUnit test coverage.
- The 6 patch series "mm: preparatory patches for PMD level swap
entries" from Usama Arif refactors and cleans up PMD softleaf helpers,
call sites, and architecture flags to lay the groundwork for a follow-up
series that introduces PMD page table swap entries.
- The 11 patch series "mm/damon: update, optimize, and clean up doc,
tests, and code" from SJ Park updates DAMON design and ABI
documentation, expands unit and selftest coverage, optimizes
damon_commit_target_regions(), and cleans up recently added sysfs
interface code for better readability.
- The 2 patch series "mm/vmpressure: reduce CPU, memory and code
overhead on cgroup v2" from Usama Arif optimizes vmpressure() by
skipping unnecessary work on cgroup v2 for userspace event notifications
and refactors v1-only eventfd handling into mm/memcontrol-v1.c to reduce
memory overhead and code complexity.
- The 10 patch series "selftests/mm: refactor pkey helpers and fix mmap
error handling" from Hongfu Li refactors pkeys shared tracing and
assertion helpers into a common file, unifies protection key selftests
to use consistent diagnostic logging and assertions, and enforces
standardized MAP_FAILED return checks for mmap() calls across the tests.
- The 18 patch series "mm/damon: optimize out nr_accesses_bp" from SJ
Park replaces the error-prone, continuously updated nr_accesses_bp field
in damon_region with an on-demand moving sum function
(damon_nr_accesses_mvsum()), reducing structure memory overhead and
avoiding state corruption bugs.
- The 6 patch series "Open HugeTLB allocation routine for more generic
use" from Ackerley Tng decouples HugeTLB folio allocation from VMA
dependencies by introducing hugetlb_alloc_folio(), enabling subsystems
like guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs.
- The 3 patch series "mm/damon: provide pseudo moving sum probe_hits"
from SJ Park integrates DAMON's probe_hits attribute counter into the
pseudo moving sum infrastructure, enabling real-time, online monitoring
without waiting for full aggregation intervals.
- The 18 patch series "mm: Some cleanups for page allocator APIs" from
Brendan Jackman simplifies and refactors the page allocator entry points
and flags by unifying allocation paths, adding internal alloc_flags
arguments, and eliminating redundant __ prefixed alloc_pages variants.
- The 5 patch series "Fix incorrect access of hugetlb pte entries" from
Dev Jain enforces the consistent use of huge_ptep_get() instead of
ptep_get() for HugeTLB entries and fixes an unaligned address issue in
arm64's huge_ptep_get() implementation.
- The 8 patch series "mm/damon: validate all parameters in the core"
from SJ Park consolidates parameter validation into the DAMON core
specifically within damon_start() and damon_commit_ctx() to centralize
error checking, eliminate caller-side redundant checks and to improve
maintenance efficiency.
- The 3 patch series "tools/mm/page_owner_sort: fix filtering and
cleanup issues" from Yichong Chen renames is_need() to filter_record()
for clearer return semantics, fixes per-record allocation memory leaks
and bounds output copies in search_pattern() to address an existing
buffer issue.
- The 4 patch series "memcg: bail out reclaim when memcg is dying" from
Jiayuan Chen mitigates a system-wide stall which occurs when a cgroup is
removed while one of its memory control files is doing synchronous
reclaim.
- The 5 patch series "mm/memory-failure: add panic option for
unrecoverable pages" from Breno Leitao introduces an opt-in
vm.panic_on_unrecoverable_memory_failure sysctl that immediately panics
the kernel on unrecoverable memory errors in kernel-owned pages to
preserve error context and prevent delayed, silent data corruption.
- The 11 patch series "mm/damon: refactor damon_{start,stop,commit}()
for simple error handling" from SJ Park refactors the DAMON core API
functions to guarantee that all contexts are fully stopped when
damon_start(), damon_stop(), or damon_commit() fail, eliminating the
need for complex and error-prone caller-side cleanup code.
- The 5 patch series "Keep tail page private zero at free and folio
split" from Zi Yan adds checks to ensure tail_page->private is zero when
freeing compound or high-order pages and when promoting tail pages
during large folio splits. By validating these fields at free and split
time, it allows the removal of redundant private field clearing inside
prep_compound_tail().
- The 4 patch series "mm: drop redundant lru_add_drain in anon folio
reuse paths" from Barry Song eliminates redundant lru_add_drain() calls
in wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead.
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads.
- The 3 patch series "mm: clean up folio LRU and swap declarations" from
Jianyue Wu reorganizes folio LRU and swap code by relocating
page-cluster state to mm/swap_state.c, renaming mm/swap.c to mm/folio.c,
and moving MM-internal reclaim declarations into mm/internal.h.
- The 15 patch series "userfaultfd: working set tracking for VM guest
memory" from Kiryl Shutsemau adds userfaultfd support for tracking the
working set of VM guest memory, so a VMM can identify hot pages and
reclaim cold ones to tiered or remote storage.
- The 10 patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part
2)" from David Hildenbrand removes the remaining pieces of
CONFIG_HAVE_BOOTMEM_INFO_NODE, performing some smaller cleanups around
freeing of reserved vmemmap pages on the way.
- The 7 patch series "mm/damon: update probe hits for runtime parameter
commits" from SJ Park ensures that DAMON's probe_hits attribute counter
is properly updated when monitoring intervals are changed at runtime,
matching the behavior of nr_accesses. To achieve this, it refactors and
renames existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- The 3 patch series "KSM: performance optimizations for rmap_walk_ksm"
from xu xin resolves a severe KSM reverse-mapping performance bottleneck
where thousands of split VMAs sharing a single anon_vma cause extended
lock contention. By adding an interval-filtering check during the rmap
walk, it reduces worst-case anon_vma lock hold times from over 500ms
down to under 2ms, preventing application freezes and latency spikes
under memory pressure.
- The 3 patch series "mm: split a couple of headers from internal.h"
from Mike Rapoport splits declarations related to mm_init, memblock,
vmalloc and sparse into new headers.
- The 2 patch series "KSM: use linear_page_index in collect_procs_ksm()"
from xu xin applies the interval tree optimization from rmap_walk_ksm()
to collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling. It hoists loop-invariant address
initialization and restricts the anon_vma_interval_tree_foreach walk to
a targeted page offset range, reducing redundant checks and improving
lookup efficiency.
- The 3 patch series "selftests/mm: avoid false failures in hugetlb and
KSM tests" from Sayali Patil fixes issues in the hugetlb and KSM MM
selftest categories that can report failures when the prerequisites for
the tests are not satisfied.
- The 19 patch series "mm/damon: introduce data attributes only
monitoring" from SJ Park introduces attribute-weighted region management
in DAMON, allowing users to prioritize specific data attributes (such as
page sizes or cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely disable
access tracking and adjust monitoring regions based on weighted
probe-hit counters to optimize monitoring quality for attribute-focused
workloads.
- The 8 patch series "mm/hmm: Add mmap lock-drop support for
userfaultfd-backed mappings" from Stanislav Kinsburskii extends
hmm_range_fault() to support userfaultfd-backed regions by allowing the
mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd regions
while preserving backward compatibility for existing callers.
- The 33 patch series "mm: make VMA page offset handling more
consistent" from Lorenzo Stoakes cleans up and standardizes how
vma->vm_pgoff is accessed and manipulated across file-backed and
anonymous mappings in the kernel.
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while renaming
rmap interval tree helpers to better reflect their functionality.
These changes establish a cleaner foundation for future work that will
unify virtual page offset indexing for all anonymous and CoW'd folios.
- The 3 patch series "mm: handle device-private PMDs in walk callbacks"
from Usama Arif addresses kernel panics and state corruption caused by
MM walk callbacks reaching non-present device-private PMD swap entries
created during HMM migrations.
It ensures that functions which acquire pmd_trans_huge_lock() properly
recognize device-private PMDs instead of assuming a present THP or a
standard migration entry.
- The 5 patch series "mm/rmap: Refactor try_to_unmap_one" from Dev Jain
refactors try_to_unmap_one by modularizing Hugetlb, anonymous-lazyfree,
and anonymous-swapbacked logic into dedicated functions, laying the
structural groundwork for batched anonymous large folio unmapping.
- The 4 patch series "Docs/ABI/damon: sysfs ABI document fixes and
additions" from Song Hu fixes typos and fills in missing entries in the
DAMON sysfs ABI document.
- The 10 patch series "dax/kmem: atomic whole-device hotplug via sysfs"
from Gregory Price introduces an atomic sysfs state attribute and
supporting DAX/MM infrastructure to prevent userland races when
offlining and removing entire memory regions.
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- The 13 patch series "mm: convert more vm_flags_t users to vma_flags_t"
from Lorenzo Stoakes continues transitioning the kernel from the
deprecated vm_flags_t type to vma_flags_t across core memory management
infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- The 2 patch series "Two small patches to clean up mm/mm_slot.h" from
xu xin refactors mm_slot.h by introducing mm_slot_remove() to unify
duplicate slot deletion sequences in khugepaged and KSM. It also adds
code documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- The 10 patch series "mm/damon/core: hide core-private struct fields"
from SJ Park cleans up DAMON core structures by consistently marking
internal-only fields with private: comment tags to prevent improper
direct access from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- The 6 patch series "mm/damon: unurgent fixes for infinite loop, NULL
de-ref and races" from SJ Park addresses potential infinite loops, NULL
dereferences, and race conditions identified in DAMON.
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- The 2 patch series "mm/page_alloc: fixes for free_pages_nolock() on
RT/UP" from Brendan Jackman fixes an NMI safety flaw in
__free_frozen_pages() where freeing pages on non-SMP or PREEMPT_RT
kernels can bypass can_spin_trylock() checks via non-PCP or isolated
migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- The 4 patch series "mm/page_alloc: couple of followups for recent
cleanups" from Brendan Jackman cleans up and updates page allocator
nomenclature, documentation, and debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete VM_BUG_ON()
assertions in allocation paths.
- The 3 patch series "mm/mseal: further cleanups" from Lorenzo Stoakes
refactors and simplifies the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO, eliminates
mm_struct parameters to enforce that sealing applies only to
current->mm, and streamlines overall logic and comments with no
functional changes intended.
- The 4 patch series "mm/vmscan: fix swappiness=max and clean up
per-node proactive reclaim" from Ridong Chen resolves reclaim behavior
bugs and cleans up function parameters across memory reclaim paths.
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead of
collapsing all failures into -EAGAIN, and removes the obsolete gfp_mask
parameter from __node_reclaim().
- The 6 patch series "mm: mincore: misc cleanups" from Kefeng Wang
cleans up and simplifies the mincore code. Most importantly, it removes
the historical special behavior that always reports VM_PFNMAP pages as
non-resident.
- The 2 patch series "mm/huge_memory: drop dead split helper variants"
from Kiryl Shutsemau implements two trivial cleanups in the folio split
API.
- The 7 patch series "mm/damon: fix uninitialized DAMOS field and kunit
exec expectation bugs" from SJ Park resolves minor operational and
testing bugs in DAMON identified by Sashiko. It initializes the
damos->last_applied field to prevent occasional efficiency degradation
and fixes invalid memory accesses in DAMON KUnit tests during test
failure handling.
- The 3 patch series "cleanup for stable_page_flags()" from Jinjiang Tu
cleans up and refactors stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- The 3 patch series "Batch unmap of uffd-wp file folios" from Dev Jain
extends batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching capabilities
to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- The 3 patch series "mm/early_ioremap: clarify and clean up
early_ioremap_reset()" from Sang-Heon Jeon clarifies and cleans up the
architecture-specific usage of __late_set_fixmap() and
__late_clear_fixmap() after early_ioremap_reset().
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset calls
in the RISC-V and ARM64 architectures.
- The 4 patch series "mm: fix reclaim storms in defrag_mode" from
Johannes Weiner addresses severe performance regressions, swap storms,
and spurious OOMs caused by vm.defrag_mode=1 under high memory pressure
in Meta production.
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- The 2 patch series "zram: lockmap tweaks" from Sebastian Siewior
optimizes and fixes lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolating lock classes across multiple instances.
It reduces memory overhead by replacing per-entry lockdep_map instances
with a single map per struct zram, and assigns a dynamic lock_class_key
to each instance to prevent false deadlock reports when different zram
devices are backed by distinct filesystems.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaoUJbQAKCRDdBJ7gKXxA
jqrzAP9WoPU0hiK4qS/kSjhtoZxhjpS5eLSUCy/utKuEvZbfGgEAu1zA+LH+X9Tm
THK5ex4iUZxiFbXpWfLMxE/Q9PmQYQ8=
=QTyb
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "mm: drop "sub" prefix from various places" (Dev Jain)
page->folio conversion and a naming cleanup
- "mm/kasan: remove redundant initialization for kasan_flag_write_only"
(Igor Putko)
KASAN cleanup work
- "mm/filemap: reduce unnecessary xarray lookups" (Chi Zhiling)
Small speedup in the pagecaache read code
- "mm/percpu: Fix possible NOFS/NOIO reclaim recursion" (Kaitao Cheng)
Improve the vmalloc code - mainly the avoidance of GFP_KERNEL
allocations when the caller asked for GFP_NOFS or GFP_NOIO
- "mm/kmemleak: avoid soft lockup when scanning task stacks" (Breno
Leitao)
Avoid a soft lockup watchdog trigger from the kmemleak scanning code
in extreme situations
- "mm/page_owner: misc cleanups" (Ye Liu)
Cleanups to the page_owner code. For some reason lots of people have
been working on the page_owner code this cycle.
- "mm: convert to walk_page_range_vma() to eliminate find_vma()"
(Kefeng Wang)
Simplify and accelerate the page walking library function
- "mm/migrate: preparatory cleanups for batch copy and offload"
(Shivank Garg)
Cleanups in the migration code
- "mm/page_owner: add per-fd filter infrastructure for print_mode and
NUMA filtering" (Zhen Ni)
Per-fd filtering to page_owner in order to reduce the sometimes vast
amount of output it can produce
- "mm: Refactor bootmem gigantic hugepage allocation" (Muchun Song)
Fixes and preparatory cleanups around bootmem HugeTLB handling,
sparse initialization ordering, and related vmemmap setup
- "mm/zsmalloc: reduce lock contention in zs_free()" (Wenchao Hao)
Reduce lock contention in zs_free(), which dominates the unmap path
under memory pressure on Android (LMK kills) and on x86 servers
running zswap-heavy workloads.
Up to 1.83x improvement in microbenchmarking.
- "move alloc_tag.c file under mm/" (Suren Baghdasaryan)
- "samples/damon: handle damon_{start,stop}() failures" (SJ Park)
Fix improper handling of damon_start(), damon_stop(), and
damon_call() failures across DAMON sample modules to prevent
potential memory leaks, operation disruptions and use-after-free
bugs
- "mm/damon/sysfs: kobject_del() directories that users can
create/remove" (SJ Park)
Fix delayed sysfs directory removal under DEBUG_KOBJECT_RELEASE
causeing creation failures due to duplicate directory names by adding
missing kobject_del() calls before creating new directories
- "mm: cleanup clear_not_present_full_ptes()" (David Hildenbrand)
Clean up the core pte handling code
- "selftests/damon: misc fixes for test bugs" (Kunwu Chan)
Fix several bugs in the DAMON selftests
- "selftests/damon: fix memcg_path staging handling" (Cheng Nie)
Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and
add a test case for it in sysfs.py.
- "selftests/damon: test kdamond refresh_ms" (Ruslan Valiyev)
Selftest coverage for DAMON's refresh_ms sysfs feature by updating
the test control module and verifying that scheme stats update
automatically without manual intervention
- "mm/damon: five misc fixups" (Akinobu Mita)
Miscellaneous DAMON fixups.
- "mm/damon/core: detect internal variation above max_nr_regions/2"
(Jiayuan Chen)
Fix DAMON's region splitting behavior when region counts exceed half
the maximum budget by dynamically scaling down the split fraction as
the limit approaches, preventing large regions from staying un-split,
and add corresponding KUnit test coverage
- "mm: preparatory patches for PMD level swap entries" (Usama Arif)
Refactor and clean up PMD softleaf helpers, call sites, and
architecture flags to lay the groundwork for a follow-up series that
introduces PMD page table swap entries
- "mm/damon: update, optimize, and clean up doc, tests, and code" (SJ
Park)
Update DAMON design and ABI documentation, expands unit and selftest
coverage, optimize damon_commit_target_regions(), and clean up
recently added sysfs interface code for better readability
- "mm/vmpressure: reduce CPU, memory and code overhead on cgroup v2"
(Usama Arif)
Optimize vmpressure() by skipping unnecessary work on cgroup v2 for
userspace event notifications and refactor v1-only eventfd handling
into mm/memcontrol-v1.c to reduce memory overhead and code complexity
- "selftests/mm: refactor pkey helpers and fix mmap error handling"
(Hongfu Li)
Refactor pkeys shared tracing and assertion helpers into a common
file, unify protection key selftests to use consistent diagnostic
logging and assertions, and enforce standardized MAP_FAILED return
checks for mmap() calls across the tests
- "mm/damon: optimize out nr_accesses_bp" (SJ Park)
Replace the error-prone, continuously updated nr_accesses_bp field in
damon_region with an on-demand moving sum function, reducing
structure memory overhead and avoiding state corruption bugs
- "Open HugeTLB allocation routine for more generic use" (Ackerley Tng)
Decouple HugeTLB folio allocation from VMA dependencies by
introducing hugetlb_alloc_folio(), enabling subsystems like
guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs
- "mm/damon: provide pseudo moving sum probe_hits" (SJ Park)
Integrate DAMON's probe_hits attribute counter into the pseudo moving
sum infrastructure, enabling real-time, online monitoring without
waiting for full aggregation intervals
- "mm: Some cleanups for page allocator APIs" (Brendan Jackman)
Simplify and refactor the page allocator entry points and flags by
unifying allocation paths, adding internal alloc_flags arguments, and
eliminating redundant __ prefixed alloc_pages variants.
- "Fix incorrect access of hugetlb pte entries" (Dev Jain)
Enforce the consistent use of huge_ptep_get() instead of ptep_get()
for HugeTLB entries and fixes an unaligned address issue in arm64's
huge_ptep_get() implementation
- "mm/damon: validate all parameters in the core" (SJ Park)
Consolidate parameter validation into the DAMON core specifically
within damon_start() and damon_commit_ctx() to centralize error
checking, eliminate caller-side redundant checks and to improve
maintenance efficiency
- "tools/mm/page_owner_sort: fix filtering and cleanup issues" (Yichong
Chen)
Rename is_need() to filter_record() for clearer return semantics, fix
per-record allocation memory leaks and bound output copies in
search_pattern() to address an existing buffer issue
- "memcg: bail out reclaim when memcg is dying" (Jiayuan Chen)
Mitigate a system-wide stall which occurs when a cgroup is removed
while one of its memory control files is doing synchronous reclaim
- "mm/memory-failure: add panic option for unrecoverable pages" (Breno
Leitao)
Introduce an opt-in vm.panic_on_unrecoverable_memory_failure sysctl
that immediately panics the kernel on unrecoverable memory errors in
kernel-owned pages to preserve error context and prevent delayed,
silent data corruption
- "mm/damon: refactor damon_{start,stop,commit}() for simple error
handling" (SJ Park)
Refactor the DAMON core API functions to guarantee that all contexts
are fully stopped when damon_start(), damon_stop(), or damon_commit()
fail, eliminating the need for complex and error-prone caller-side
cleanup code
- "Keep tail page private zero at free and folio split" (Zi Yan)
Add checks to ensure tail_page->private is zero when freeing compound
or high-order pages and when promoting tail pages during large folio
splits. By validating these fields at free and split time, it allows
the removal of redundant private field clearing inside
prep_compound_tail()
- "mm: drop redundant lru_add_drain in anon folio reuse paths" (Barry
Song)
Eliminate redundant lru_add_drain() calls in
wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads
- "mm: clean up folio LRU and swap declarations" (Jianyue Wu)
Reorganize folio LRU and swap code by relocating page-cluster state
to mm/swap_state.c, renaming mm/swap.c to mm/folio.c, and moving
MM-internal reclaim declarations into mm/internal.h.
- "userfaultfd: working set tracking for VM guest memory" (Kiryl
Shutsemau)
Add userfaultfd support for tracking the working set of VM guest
memory, so a VMM can identify hot pages and reclaim cold ones to
tiered or remote storage
- "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)" (David
Hildenbrand)
Remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE,
performing some smaller cleanups around freeing of reserved vmemmap
pages on the way.
- "mm/damon: update probe hits for runtime parameter commits" (SJ Park)
Ensure that DAMON's probe_hits attribute counter is properly updated
when monitoring intervals are changed at runtime, matching the
behavior of nr_accesses. To achieve this, it refactors and renames
existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- "KSM: performance optimizations for rmap_walk_ksm" (xu xin)
Resolve a severe KSM reverse-mapping performance bottleneck where
thousands of split VMAs sharing a single anon_vma cause extended lock
contention.
By adding an interval-filtering check during the rmap walk, it
reduces worst-case anon_vma lock hold times from over 500ms down to
under 2ms, preventing application freezes and latency spikes under
memory pressure.
- "mm: split a couple of headers from internal.h" (Mike Rapoport)
Split declarations related to mm_init, memblock, vmalloc and sparse
into new headers
- "KSM: use linear_page_index in collect_procs_ksm()" (xu xin)
Apply the interval tree optimization from rmap_walk_ksm() to
collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling.
It hoists loop-invariant address initialization and restricts the
anon_vma_interval_tree_foreach walk to a targeted page offset range,
reducing redundant checks and improving lookup efficiency.
- "selftests/mm: avoid false failures in hugetlb and KSM tests" (Sayali
Patil)
Fix issues in the hugetlb and KSM MM selftest categories that can
report failures when the prerequisites for the tests are not
satisfied
- "mm/damon: introduce data attributes only monitoring" (SJ Park)
Introduce attribute-weighted region management in DAMON, allowing
users to prioritize specific data attributes (such as page sizes or
cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely
disable access tracking and adjust monitoring regions based on
weighted probe-hit counters to optimize monitoring quality for
attribute-focused workloads.
- "mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings"
(Stanislav Kinsburskii)
Extend hmm_range_fault() to support userfaultfd-backed regions by
allowing the mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd
regions while preserving backward compatibility for existing callers.
- "mm: make VMA page offset handling more consistent" (Lorenzo Stoakes)
Clean up and standardize how vma->vm_pgoff is accessed and
manipulated across file-backed and anonymous mappings in the kernel
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while
renaming rmap interval tree helpers to better reflect their
functionality.
These changes establish a cleaner foundation for future work that
will unify virtual page offset indexing for all anonymous and CoW'd
folios.
- "mm: handle device-private PMDs in walk callbacks" (Usama Arif)
Address kernel panics and state corruption caused by MM walk
callbacks reaching non-present device-private PMD swap entries
created during HMM migrations
It ensures that functions which acquire pmd_trans_huge_lock()
properly recognize device-private PMDs instead of assuming a present
THP or a standard migration entry.
- "mm/rmap: Refactor try_to_unmap_one" (Dev Jain)
Refactor try_to_unmap_one by modularizing Hugetlb,
anonymous-lazyfree, and anonymous-swapbacked logic into dedicated
functions, laying the structural groundwork for batched anonymous
large folio unmapping.
- "Docs/ABI/damon: sysfs ABI document fixes and additions" (Song Hu)
Fix typos and fills in missing entries in the DAMON sysfs ABI
document
- "dax/kmem: atomic whole-device hotplug via sysfs" (Gregory Price)
Introduce an atomic sysfs state attribute and supporting DAX/MM
infrastructure to prevent userland races when offlining and removing
entire memory regions
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- "mm: convert more vm_flags_t users to vma_flags_t" (Lorenzo Stoakes)
Continue transitioning the kernel from the deprecated vm_flags_t type
to vma_flags_t across core memory management infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- "Two small patches to clean up mm/mm_slot.h" (xu xin)
Refactor mm_slot.h by introducing mm_slot_remove() to unify duplicate
slot deletion sequences in khugepaged and KSM. It also adds code
documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- "mm/damon/core: hide core-private struct fields" (SJ Park)
Clean up DAMON core structures by consistently marking internal-only
fields with private: comment tags to prevent improper direct access
from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- "mm/damon: unurgent fixes for infinite loop, NULL de-ref and races"
(SJ Park)
Address potential infinite loops, NULL dereferences, and race
conditions identified in DAMON
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- "mm/page_alloc: fixes for free_pages_nolock() on RT/UP" (Brendan
Jackman)
Fix an NMI safety flaw in __free_frozen_pages() where freeing pages
on non-SMP or PREEMPT_RT kernels can bypass can_spin_trylock() checks
via non-PCP or isolated migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- "mm/page_alloc: couple of followups for recent cleanups" (Brendan
Jackman)
Clean up and update page allocator nomenclature, documentation, and
debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete
VM_BUG_ON() assertions in allocation paths.
- "mm/mseal: further cleanups" (Lorenzo Stoakes)
Refactor and simplify the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO,
eliminates mm_struct parameters to enforce that sealing applies only
to current->mm, and streamlines overall logic and comments with no
functional changes intended.
- "mm/vmscan: fix swappiness=max and clean up per-node proactive
reclaim" (Ridong Chen)
Resolve reclaim behavior bugs and clean up function parameters across
memory reclaim paths
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead
of collapsing all failures into -EAGAIN, and removes the obsolete
gfp_mask parameter from __node_reclaim().
- "mm: mincore: misc cleanups" (Kefeng Wang)
Clean up and simplifies the mincore code. Most importantly, it
removes the historical special behavior that always reports VM_PFNMAP
pages as non-resident.
- "mm/huge_memory: drop dead split helper variants" (Kiryl Shutsemau)
Two trivial cleanups in the folio split API
- "mm/damon: fix uninitialized DAMOS field and kunit exec expectation
bugs" (SJ Park)
Resolve minor operational and testing bugs in DAMON identified by
Sashiko. It initializes the damos->last_applied field to prevent
occasional efficiency degradation and fixes invalid memory accesses
in DAMON KUnit tests during test failure handling.
- "cleanup for stable_page_flags()" (Jinjiang Tu)
Clean up and refactor stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- "Batch unmap of uffd-wp file folios" (Dev Jain)
Extend batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching
capabilities to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- "mm/early_ioremap: clarify and clean up early_ioremap_reset()"
(Sang-Heon Jeon)
Clarify and clean up the architecture-specific usage of
__late_set_fixmap() and __late_clear_fixmap() after
early_ioremap_reset()
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset
calls in the RISC-V and ARM64 architectures.
- "mm: fix reclaim storms in defrag_mode" (Johannes Weiner)
Address severe performance regressions, swap storms, and spurious
OOMs caused by vm.defrag_mode=1 under high memory pressure in Meta
production
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- "zram: lockmap tweaks" (Sebastian Siewior)
Optimize and fix lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolate lock classes across multiple instances
This reduces memory overhead by replacing per-entry lockdep_map
instances with a single map per struct zram, and assigns a dynamic
lock_class_key to each instance to prevent false deadlock reports
when different zram devices are backed by distinct filesystems.
* tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (501 commits)
selftests/mm: thuge-gen: fix test_shmget() for PAGE_SIZE check
selftests/mm: unpoison pages in memory-failure teardown
mm/shmem: downgrade final i_blocks check in shmem_evict_inode() to pr_warn()
mm/khugepaged: replace mutex_lock/mutex_unlock usage with guard macro
mm/zsmalloc: fix release order of locks in zs_page_migrate()
Documentation: zram: remove sections numbering
ksm: stop iterating VMAs when ksm_test_exit returns true
mm: fold userfaultfd_rwp() to false without CONFIG_ARCH_HAS_PTE_PROTNONE
mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch()
zram: use a custom key for each zram object
zram: move lockmap to be per-zram instead per table
selftests/mm: fix gup_longterm EINVAL error message
mm: page_alloc: fix non-movable reclaim storm in defrag_mode
mm: page_alloc: move capture_control to the page allocator
mm: compaction: support non-movable compaction for pageblock requests
mm: page_alloc: __GFP_FS lockdep annotation for direct compaction
hugetlb: evaluate subpool free state while locked
mm/damon: remove trailing semicolons after function definitions
mm/damon/ops-common: prevent migration fallback to non-target nodes
mm/damon: update outdated comment about DAMOS filter handling
...
|
||
|
Linus Torvalds
|
ae814200e8 |
bitmap updates for v7.3
- bitmap_find_next_zero_area_off() optimization (Sunyi);
- bitmap_find_next_zero_area_off(): return size when no zero area is
found (Yury);
- bitmap vs IDA vs Maple Tree performance test (Yury);
- get rid of cpumap_print_to_pagebuf() (Yury);
- use nr_node_ids in __nodemask_pr_numnodes() (Li RongQing);
- bitops: make the *_bit_le functions use unsigned long (Benjamin);
- bitmap scatter & gather test fix (Christophe);
- use __ASSEMBLER__ in bitmap header files (Thomas);
-----BEGIN PGP SIGNATURE-----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=q8Lf
-----END PGP SIGNATURE-----
Merge tag 'bitmap-for-7.3' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
"The usual set of fixes, cleanups and performance improvements together
with a couple of new tests:
- bitmap_find_next_zero_area_off() optimization (Sunyi)
- bitmap_find_next_zero_area_off(): return size when no zero area is
found (Yury)
- bitmap vs IDA vs Maple Tree performance test (Yury)
- get rid of cpumap_print_to_pagebuf() (Yury)
- use nr_node_ids in __nodemask_pr_numnodes() (Li RongQing)
- bitops: make the *_bit_le functions use unsigned long (Benjamin)
- bitmap scatter & gather test fix (Christophe)
- use __ASSEMBLER__ in bitmap header files (Thomas)"
* tag 'bitmap-for-7.3' of https://github.com/norov/linux: (25 commits)
lib: test bitmap vs IDA vs Maple Tree performance for region allocations
bitmap: Return size when no zero area is found
media: s5p-mfc: Treat bitmap size as allocation failure
crypto: ccp: Treat bitmap size as allocation failure
powerpc/msi: Treat bitmap size as allocation failure
ARM: dma-mapping: Treat bitmap size as allocation failure
bitmap: drop bitmap_next_set_region()
nodemask: reduce bitmap width to nr_node_ids in __nodemask_pr_numnodes()
bitmap: Properly initialise destination bitmap for scatter & gather test
lib/bitmap-str: get rid of cpumap_print_to_pagebuf()
perf: Use sysfs_emit() for cpumask show callbacks
PCI/sysfs: Use sysfs_emit() for cpumask show callbacks
RDMA/hfi1: Use sysfs_emit() for cpumask show helper
hwtracing: hisi_ptt: Use sysfs_emit() for cpumask show
fpga: dfl-fme-perf: Use sysfs_emit() for cpumask show
devfreq: Use sysfs_emit() for cpumask show callbacks
cpu: Use sysfs_emit() for cpumask show callback
x86/events: Use sysfs_emit() for cpumask show callbacks
powerpc: Use sysfs_emit() for cpumask show callbacks
arm: Use sysfs_emit() for cpumask show callbacks
...
|
||
|
Linus Torvalds
|
bd5f485f3f |
soc: Arm platform updates for 7.3
The 32-bit Arm platforms are a bit more interesting this time: I refreshed
an earlier series to mark code as deprecated that does have the tendency
of getting in the way of cleanups and new features but has close to zero
users. Among these are:
- 22 of the remaining 28 legacy board files that predate the current
devicetree based descriptions, using old chips from Intel and Marvell.
The remaining six board files are for TI OMAP1 and Samsung s3c64xx
chips and all still have known users.
- support for Cortex-M3/M4/M7 and ARM1136r0 CPU cores and the 25
machines based on these. These all use devicetree but the CPU
support causes disproportional work. Most of them are just
reference boards, the notable exceptions being the Nokia N800/N810
tablet and the Buglabs BUG platform.
- be8, be32, oabi and iwmmxt userspace binaries, which were mostly
associated with the platforms now scheduled for removal and
are increasingly problematic to support with modern toolchains.
Nothing is actually removed at this point, to ensure that any remaining
users continue to have the 7.3-LTS for a while longer. Patches for
removal are currently being tested.
Other updates include a continued work to convert GPIO number based
interfaces to descriptors, a patch to restore little-endian mode
on the one Arm platform (ixp4xx) that only worked in big-endian mode
recently, and some minor cleanups and bugfixes.
-----BEGIN PGP SIGNATURE-----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=FH1e
-----END PGP SIGNATURE-----
Merge tag 'soc-arm-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Arnd Bergmann:
"The 32-bit Arm platforms are a bit more interesting this time: I
refreshed an earlier series to mark code as deprecated that does have
the tendency of getting in the way of cleanups and new features but
has close to zero users. Among these are:
- 22 of the remaining 28 legacy board files that predate the current
devicetree based descriptions, using old chips from Intel and
Marvell. The remaining six board files are for TI OMAP1 and Samsung
s3c64xx chips and all still have known users.
- support for Cortex-M3/M4/M7 and ARM1136r0 CPU cores and the 25
machines based on these. These all use devicetree but the CPU
support causes disproportional work. Most of them are just
reference boards, the notable exceptions being the Nokia N800/N810
tablet and the Buglabs BUG platform.
- be8, be32, oabi and iwmmxt userspace binaries, which were mostly
associated with the platforms now scheduled for removal and are
increasingly problematic to support with modern toolchains.
Nothing is actually removed at this point, to ensure that any
remaining users continue to have the 7.3-LTS for a while longer.
Patches for removal are currently being tested.
Other updates include a continued work to convert GPIO number based
interfaces to descriptors, a patch to restore little-endian mode on
the one Arm platform (ixp4xx) that only worked in big-endian mode
recently, and some minor cleanups and bugfixes"
* tag 'soc-arm-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (41 commits)
MAINTAINERS: Drop redundant lists from various Samsung entries
ARM: tegra: Replace __ASSEMBLY__ with __ASSEMBLER__
ARM: tegra: Fix OF node reference leaks in IRQ init
ARM: lpc32xx: remove a few manually populated OF devices
ARM: lpc32xx: only run SoC init on LPC32xx hardware
firmware: imx: scu: manage mailbox channels and global handle
ARM: sa1100: h3xxx: convert gpio-keys to use software nodes
ARM: sa1100: collie: convert gpio-keys to use software nodes
ARM: sa1100: assabet: convert gpio-keys to use software nodes
gpio: sa1100: register software node for GPIO controller
ARM: ixp4xx: Relax endianness
ARM: replace linux/gpio.h inclusions
soc: imx9: devm_kasprintf error handling
ARM: mark mv78xx0 support as deprecated
ARM: mark axxia platform as deprecated
ARM: mark Cortex-M3/M4/M7 based boards as deprecated
ARM: mark footbridge as deprecated
ARM: mark RiscPC as deprecated
ARM: mark mach-sa1100 as deprecated
ARM: orion5x: mark all board files as deprecated
...
|
||
|
Linus Torvalds
|
104a813376 |
VDSO updates:
- Consolidate the VDSO datastore further and provide support for
mlock_all() and prefaulting.
- Provide 32-bit legacy time related functionality only if
CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists, but
architecture code still exposes the legacy functionality even disabled.
Clean this up by adding the missing guards and validating at build time
that the VDSO is legacy free if disabled.
- Consolidate the VDSO related config options in core and drivers, which
removes some non-sensical dependencies and quite an amount of #ifdeffery.
- Clean up the PAGE_SIZE definition maze
-----BEGIN PGP SIGNATURE-----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=jHl1
-----END PGP SIGNATURE-----
Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO updates from Thomas Gleixner:
- Consolidate the VDSO datastore further and provide support for
mlock_all() and prefaulting.
- Provide 32-bit legacy time related functionality only if
CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists,
but architecture code still exposes the legacy functionality even
disabled.
Clean this up by adding the missing guards and validating at build
time that the VDSO is legacy free if disabled.
- Consolidate the VDSO related config options in core and drivers,
which removes some non-sensical dependencies and quite an amount of
#ifdeffery.
- Clean up the PAGE_SIZE definition maze
* tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
random: vDSO: Drop custom PAGE_SIZE definitions
LoongArch: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery
clocksource/drivers/timer-riscv: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery
clocksource/drivers/arm_arch_timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery
clocksource/drivers/mips-gic-timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery
MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery
vDSO: Make clockmode constants available without CONFIG_GENERIC_GETTIMEOFDAY
kbuild: Support generated asm-headers in subdirectories
vdso: Rename HAVE_GENERIC_VDSO to VDSO_DATASTORE
vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files
vdso: Automatically select HAVE_GENERIC_VDSO if necessary
MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO
vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA
futex: Remove dependency on HAVE_GENERIC_VDSO from FUTEX_ROBUST_UNLOCK
vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions
sparc: vdso: Respect COMPAT_32BIT_TIME
MIPS: VDSO: Respect COMPAT_32BIT_TIME
powerpc/vdso: Respect COMPAT_32BIT_TIME
ARM: VDSO: Respect COMPAT_32BIT_TIME
arm64: vdso32: Respect COMPAT_32BIT_TIME
...
|
||
|
Ethan Nelson-Moore
|
055a410f7c |
ARM: 9478/1: Remove references to removed CONFIG_CPU_ARM92x_CPU_IDLE options
Several assembly files in arch/arm/mm contain comments referring to CONFIG_CPU_ARM92x_CPU_IDLE options, which have not existed in the kernel since 2.4.21. Remove them. Discovered while searching for CONFIG_* symbols referenced in code but not defined in any Kconfig file. Reviewed-by: Linus Walleij <linusw@kernel.org> Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> |
||
|
Xie Yuanbin
|
1039bffd6a |
ARM: 9485/1: mm: acquire mmap write lock around show_pte() for user faults
When CONFIG_DEBUG_USER=y, and cmdline "user_debug=31" is set,
a user fault may trigger show_pte() without any lock.
If another thread in the same process concurrently calls munmap(),
the page table pages may be freed while show_pte() is still traversing
them, causing a use-after-free in show_pte().
If CONFIG_ARM_LPAE=y, this may cause a kernel panic if the pages table
of PMD are freed when show_pte() is running.
Acquire mmap_write_lock() around show_pte() for user faults to fix the
contention.
For user faults, additionally restrict that show_pte() is called only
when the addr is a user-space address (addr < TASK_SIZE). This is because
the lock of tsk->mm only protects the virtual memory of user address space,
furthermore, dumping the page tables of a kernel-space address for user
faults is unnecessary and may have security implications.
Keep everything unchanged for kernel faults, because the kernel is
already in the "oops" state, acquiring a lock may risk a deadlock.
Co-developed-by: Qi Xi <xiqi2@huawei.com>
Fixes:
|
||
|
Xie Yuanbin
|
e79ca91165 |
ARM: 9484/1: enable interrupts when unhandled user faults are triggered
PREEMPT_RT requires interrupts to be enabled when sending signals.
When do_DataAbort()/do_PrefetchAbort() triggers unhandled user faults,
that is `inf->fn()` return a non-zero value, and the interrupts are not
enabled within the hook function, force_sig_fault() will be called
with interrupts disabled.
This can be triggered by user programs executing the bkpt instruction,
with kernel config CONFIG_PERF_EVENTS=n.
Enable interrupts in do_DataAbort()/do_PrefetchAbort() when unhandled
user faults are triggered to fix the issue.
Fixes:
|
||
|
Lorenzo Stoakes
|
93d23dff8e |
mm: use linear_page_[index, delta]() consistently
There are a number of places where we open code what linear_page_index() and linear_page_delta() calculate. Replace this code with the appropriate functions for consistency. No functional change intended. Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-21-2a5aa403d977@kernel.org Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> [DRM] Acked-by: Kai Huang <kai.huang@intel.com> # for sgx Reviewed-by: Gregory Price <gourry@gourry.net> Reviewed-by: Pedro Falcato <pfalcato@suse.de> # for mm Reviewed-by: Ackerley Tng <ackerleytng@google.com> [guest_memfd] Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: SJ Park <sj@kernel.org> Cc: Liam R. Howlett (Oracle) <liam@infradead.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Lorenzo Stoakes
|
4b7a90a48b |
mm/rmap: rename vma_interval_tree_*() to mapping_rmap_tree_*()
The family of vma_interval_tree_() functions manipulate the address_space (which, of course, is generally referred to as 'mapping') reverse mapping, but are named the 'VMA' interval tree. VMAs may be mapped by an anon_vma, an address_space, or both. Therefore calling the mapping interval tree a 'VMA' interval tree is rather confusing. This is also inconsistent with the anon_vma_interval_tree_*() functions which explicitly reference the rmap object to which they pertain. Rename the vma_interval_tree_*() functions to mapping_rmap_tree_*() to correct this. We will rename the anon rmap functions similarly in a subsequent patch. No functional change intended. Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-8-2a5aa403d977@kernel.org Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Gregory Price <gourry@gourry.net> Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Ackerley Tng <ackerleytng@google.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Kai Huang <kai.huang@intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Pedro Falcato <pfalcato@suse.de> Cc: SJ Park <sj@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Liam R. Howlett (Oracle) <liam@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Lorenzo Stoakes
|
7a67b96af0 |
mm/rmap: parameterise vma_interval_tree_*() by address_space
The file-backed mapping interval tree functions vma_interval_tree_*() accept a raw rb_root_cached pointer to determine the tree in which they are operating. However, in each case, this is always associated with an address_space data type. So simply pass a pointer to that instead to simplify the code, and more clearly differentiate between these operations and those concerning anonymous mappings. While we're here, make the generated interval tree functions static as they do not need to be used externally (any previously existing external users have now been removed). We also rename VMA parameters from 'node' to 'vma' as calling this a node is simply confusing, update the input index types to pgoff_t since they reference page offsets and rename the parameters to pgoff_start and pgoff_last. No functional change intended. Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-6-2a5aa403d977@kernel.org Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Reviewed-by: Gregory Price <gourry@gourry.net> Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Ackerley Tng <ackerleytng@google.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Kai Huang <kai.huang@intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: SJ Park <sj@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Liam R. Howlett (Oracle) <liam@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Yury Norov
|
d00e89988e |
ARM: dma-mapping: Treat bitmap size as allocation failure
bitmap_find_next_zero_area() uses an out-of-range return value to indicate failure. Check for values greater than or equal to the bitmap size so the caller does not depend on the exact failure sentinel. Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Yury Norov <ynorov@nvidia.com> |
||
|
Yury Norov
|
1a9adacbbb |
arm: Use sysfs_emit() for cpumask show callbacks
These callbacks are sysfs show paths. Use sysfs_emit() and cpumask_pr_args() to emit the masks. This prepares for removing cpumap_print_to_pagebuf(). Signed-off-by: Yury Norov <ynorov@nvidia.com> |
||
|
Thomas Weißschuh
|
52447180f4 |
vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files
Now that GENERIC_GETTIMEOFDAY and VDSO_GETRANDOM enable HAVE_GENERIC_VDSO automatically, the architecture specific kconfig files do not need to do so anymore. Remove the corresponding lines. Keep them for riscv, loongarch and powerpc as those have their own explicit usage of the vDSO datastore provided by HAVE_GENERIC_VDSO. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://patch.msgid.link/20260709-vdso-have_generic_vdso-v1-5-d2e1061f268b@linutronix.de |
||
|
Arnd Bergmann
|
fe91e4e9da |
ARM: mark CPU_ENDIAN_BE8 as deprecated
Following the deprecation of big-endian ARMv8 mode in arch/arm64 in commit
|
||
|
Arnd Bergmann
|
b5fdfa2081 |
ARM: deprecate support for ARM1136r0
This CPU revision remains a special case as it is now incompatible with CONFIG_SMP. Only the Nokia N8x0 is used in practice, and even that one is fairly rare these days, so let's plan to remove all of them after the 2026 LTS kernel release. Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vladimir Zapolskiy <vz@mleia.com> # Freescale i.MX31 Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Arnd Bergmann
|
d702424271 |
ARM: rework ARM11 CPU selection logic
Support for SMP on ARM1136r0 has been broken for a while, and nobody is working on fixing it. I had a plan to change ARMv6 support to no longer coexist in a common kernel with ARMv7 CPUs but instead ARMv5 and below. This would have addressed the problem, but after a recent mailing list discussion, we concluded that an easier approach is to just forbid ARM1136r0 CPU support on SMP-enabled kernels. This mainly affects users of the Nokia N800/N810 tablets using an OMAP2420 SoC, which is the only commercial product with an ARM1136r0 that is still supported by the kernel. The other machines that are still in the same hardware catogory are: - TI OMAP2420 H4 reference board - TI OMAP2430 SDP software development platform - Freescale/NXP i.MX31 Lite Development Kit - Buglabs i.MX31 Bug 1.x prototype - Arm Integrator/AP with CM1136JF-S core module To my knowledge, none of these have any actual users aside from reference boards being used to more easily test the platforms. There are also a few ARM1136r1 machines, which implement the ARMv6K SMP support (barriers, atomics and TLS): - Eukrea CPUIMX35 reference platform - Freescale/NXP i.MX35 Product Development Kit - ARM Integrator/CP/IM-LT3 with ARM1136J Core Tile - ARM Realview/EB with ARM1136J Core Tile Again, these are mainly reference implementations rather than actual products, but since they support ARMv6K, they should continue to work correctly in SMP-enabled kernels. For the ARM Core Tile, I have not found a datasheet but instead use the revision based on what the respective virtual models report. All the other ARMv6 platforms use an ARM1176 with ARMv6K, VMSAv7 and Trustzone support. To avoid the broken configuration, annotate the ARM1136 based machines with specific CPU_ARM1136R0 or CPU_ARM1136R2 symbols in Kconfig and make the r0 variants depend on !SMP. Link: https://lore.kernel.org/linux-arm-kernel/2831c5a6-cfbf-4fe0-b51c-0396e5b0aeb7@app.fastmail.com/T/ Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Sang-Heon Jeon
|
3db1a9ccf9 |
ARM: remove unreachable invalid range check in kasan_init()
kasan_init() maps each memblock region with for_each_mem_range(), which guarantees pa_start < pa_end. Then it skips any region with pa_start >= arm_lowmem_limit, so pa_start < arm_lowmem_limit is guaranteed as well. When pa_end <= arm_lowmem_limit, pa_start < pa_end means start < end, so the start >= end check is unreachable. When pa_end > arm_lowmem_limit, end is clamped to __va(arm_lowmem_limit), and pa_start < arm_lowmem_limit means start < end, so the check is unreachable as well. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Link: https://patch.msgid.link/20260630150413.1718632-6-ekffu200098@gmail.com Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> |
||
|
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.
-----BEGIN PGP SIGNATURE-----
iQJEBAABCgAuFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmotog4QHHRnbHhAa2Vy
bmVsLm9yZwAKCRCmGPVMDXSYoYD5D/41UOOboDxkv3Ei0gS12RfFL/pHWPotWMvA
eUS4Ohko2pYubZB+iv87QQD5HC6TBN9yXbUjpvS0wN9jVSlXgQOdJ0JkNYYbPfjH
nsBt7g/ksCA0Tv0KxnUUtECCTu6frtXkSi5iDU03DVNvxLMDmRaXg+D10TKGiCfb
q1g2IoenA6YWz8pUkwOSI5wInepN8Dt9s5VXRsBQS9J9Uin/ZWAIwghIEhfFPNZu
braNUSyJ+A7xISipOjWD1kEfBjcUzr24AuMZ9XHpxnykdWoa57qNEoTnjm+bVWpU
hK0ED4nXSM8qxioV1Kye0h+hUi0T7amNtq6OSfAL+oXWHINvUe2PybqK+sZ1pPFb
0MSP/J4mV9CIvriPA33fTXw/VxigI/puCMtGuSLLXHwh2xW8hadz7wGU9lqF4E7E
f+X9NYqZSmx/82z0KKPFtIQyfrozquRBzy2ZiUloh7ek7GKF5tvuN8lds3Ghuf/6
9Hqr/YquG1Zuu+j95ozVIm7fhDjmMktxAwyAbg5WkNGqOEw7MyhoUGXjKKG29uLa
PRitT9DklL5vndzjizkLc1C2DuC++OhpnJCqRWOjJ9/TbvBC6Rn6aKwYyVTFX9xM
4VauNLQg0q9uG0TyW6o3aakaFk9OIKT+vl7bWO0G4g2YZaKDOs7s+b9sdNNNQq5R
lTL5F0KUCQ==
=Z90m
-----END PGP SIGNATURE-----
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
|
||
|
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
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCai1lNQAKCRBFlHeO1qrK
LjX1AP4kEb6SJdvBFlG/IJcG9vyqA7+Cig8OIlx9vEX7e7GvNwEAxL2HltAlAd5Q
cOIJOlu0uM+j1mn0JyuM9b0WJrxDLAA=
=E5mG
-----END PGP SIGNATURE-----
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
...
|
||
|
Florian Fainelli
|
009b6c6486 |
ARM: 9476/1: mm: fix kexec and hibernation with CONFIG_CPU_TTBR0_PAN
Commit |
||
|
Thomas Weißschuh
|
96942092d5 |
vdso/treewide: Drop GENERIC_TIME_VSYSCALL
This Kconfig symbol is not used anymore, remove it. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260519-vdso-generic_time_vsyscal-v1-3-5c2a5905d5f5@linutronix.de |
||
|
Douglas Anderson
|
3e2c1e213a |
driver core: Replace dev->dma_coherent with dev_dma_coherent()
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "dma_coherent" over to the "flags" field so modifications are safe. Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20260406162231.v5.7.If839f6dde98979fce177f70c6c74689a1904ee76@changeid [ Since all DEV_FLAG_DMA_COHERENT accessors are exposed unconditionally, also drop the CONFIG guards around dev_assign_dma_coherent() in device_initialize() to ensure a correct default value. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Linus Torvalds
|
129d6eb266 |
ARM development for 7.1-rc1
Several development updates for 7.1-rc1: - fix a race condition handling PG_dcache_clean - further cleanups for the fault handling, allowing RT to be enabled - fixing nzones validation in adfs filesystem driver - fix for module unwinding -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmnrfHEACgkQ9OeQG+St rGTtMA/+JmEQuVvtJ4ZJ+PhFYdI/VVPTpTwf4tP1dhlLEKaeX4vzlw09+mW/dYeM jH65rkQ3wcLC4gRH7ZI1SRMm6n0lAf0ROLjpwagd+4U+xnhLCmIHxo8FM2v3Rmyl 34WnCmWitiEtUN41t0EfbUBxDoX5pV42vpPkYIdnQtLkjObCcXsVFMhegBPCTfp2 UOozgH7yNlkFwWEOCEacNne22MmAheOU0R4Jb/OiFAaE3z4i/9+nFoHd7NCKpmDf hgWaOalg+jsclxn5kyE0KbraP7Uvx44eX8OeQk1rdvL+F9ItGFXtXKD7FUUj+71/ S5yHT3YrRYvAEM1GDKAieZhVWFxKPm5osnlJwrrrnfLWR7JvwrsU7SGS8FqSsqqf i/Ie5rY1hV9faXJikY8MDSzKC7gwdX0wtZ8JZanZtGwFlPvI17oaE4K3hbiD13Dk WIJpd7kfYEWG0SjWtyrW1E2plqy3lfVN4MZfjW2ID18uo0PwVtgE5GFf/HFGxugN WLV+/DhSkc40EUC4bVflWDLtnJYhsQYCJoHwZXVI8YpNK+tShia0BVCSj+Llv8Tv f33Ae7IARZad+ty2MsTW1oG0zcIjHI8A4OIoRfbRwf3z9Bs8S3o6chlTOi7YYV5y fbSxCg9AIYRcUZ0ACsnrIgrVd/YF57FD8AvJ/BHvTm7nVTeoLKY= =arB6 -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux Pull ARM updates from Russell King: - fix a race condition handling PG_dcache_clean - further cleanups for the fault handling, allowing RT to be enabled - fixing nzones validation in adfs filesystem driver - fix for module unwinding * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: ARM: 9463/1: Allow to enable RT ARM: 9472/1: fix race condition on PG_dcache_clean in __sync_icache_dcache() ARM: 9471/1: module: fix unwind section relocation out of range error fs/adfs: validate nzones in adfs_validate_bblk() ARM: provide individual is_translation_fault() and is_permission_fault() ARM: move FSR fault status definitions before fsr_fs() ARM: use BIT() and GENMASK() for fault status register fields ARM: move is_permission_fault() and is_translation_fault() to fault.h ARM: move vmalloc() lazy-page table population ARM: ensure interrupts are enabled in __do_user_fault() |
||
|
Russell King (Oracle)
|
6f685f12fd | Merge branches 'adfs', 'arm-fault-handling', 'fixes' and 'misc' | ||
|
Brian Ruley
|
75f9a484e8 |
ARM: 9472/1: fix race condition on PG_dcache_clean in __sync_icache_dcache()
This bug was already discovered and fixed for arm64 in commit |
||
|
Mike Rapoport (Microsoft)
|
6215d9f447 |
arch, mm: consolidate empty_zero_page
Reduce 22 declarations of empty_zero_page to 3 and 23 declarations of ZERO_PAGE() to 4. Every architecture defines empty_zero_page that way or another, but for the most of them it is always a page aligned page in BSS and most definitions of ZERO_PAGE do virt_to_page(empty_zero_page). Move Linus vetted x86 definition of empty_zero_page and ZERO_PAGE() to the core MM and drop these definitions in architectures that do not implement colored zero page (MIPS and s390). ZERO_PAGE() remains a macro because turning it to a wrapper for a static inline causes severe pain in header dependencies. For the most part the change is mechanical, with these being noteworthy: * alpha: aliased empty_zero_page with ZERO_PGE that was also used for boot parameters. Switching to a generic empty_zero_page removes the aliasing and keeps ZERO_PGE for boot parameters only * arm64: uses __pa_symbol() in ZERO_PAGE() so that definition of ZERO_PAGE() is kept intact. * m68k/parisc/um: allocated empty_zero_page from memblock, although they do not support zero page coloring and having it in BSS will work fine. * sparc64 can have empty_zero_page in BSS rather allocate it, but it can't use virt_to_page() for BSS. Keep it's definition of ZERO_PAGE() but instead of allocating it, make mem_map_zero point to empty_zero_page. * sh: used empty_zero_page for boot parameters at the very early boot. Rename the parameters page to boot_params_page and let sh use the generic empty_zero_page. * hexagon: had an amusing comment about empty_zero_page /* A handy thing to have if one has the RAM. Declared in head.S */ that unfortunately had to go :) Link: https://lkml.kernel.org/r/20260211103141.3215197-4-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Helge Deller <deller@gmx.de> [parisc] Tested-by: Helge Deller <deller@gmx.de> [parisc] Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Magnus Lindholm <linmag7@gmail.com> [alpha] Acked-by: Dinh Nguyen <dinguyen@kernel.org> [nios2] Acked-by: Andreas Larsson <andreas@gaisler.com> [sparc] Acked-by: David Hildenbrand (Arm) <david@kernel.org> Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: David S. Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Russell King (Oracle)
|
d1fed2d600 |
ARM: provide individual is_translation_fault() and is_permission_fault()
Provide individual LPAE and non-LPAE definitions for both these functions, rather than having ifdefs inside the function body. This places the functions closer to their associated definitions. Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
a542de4451 |
ARM: move FSR fault status definitions before fsr_fs()
The FSR's fault status bits depend on whether LPAE is enabled. Rather than always exposing both LPAE and non-LPAE to all code, move them inside the ifdef blocks dependent on LPAE to restrict their visibility. No code other than fsr_fs() makes use of these. Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
5548e8a466 |
ARM: use BIT() and GENMASK() for fault status register fields
Modernise the fault status field definitions by using BIT() and GENMASK(). Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
9c46fcaf2e |
ARM: move is_permission_fault() and is_translation_fault() to fault.h
is_permission_fault() and is_translation_fault() are both conditional on the FSR encodings, which are dependent on LPAE. We define the constants in fault.h. Move these inline functions to fault.h to be near the FSR definitions. Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
7890020485 |
ARM: move vmalloc() lazy-page table population
Split the vmalloc() lazy-page table population from do_translation_fault() into a new vmalloc_fault() function. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
59e4f3b45b |
ARM: ensure interrupts are enabled in __do_user_fault()
__do_user_fault() may be called from fault handling paths where the interrupts are enabled or disabled. E.g. do_page_fault() calls this with interrupts enabled, whereas do_sect_fault()->do_bad_area() will call this with interrupts disabled. Since this is a userspace fault, we know that interrupts were enabled in the parent context, so call local_irq_enable() here to give a consistent interrupt state. This is necessary for force_sig_info() when PREEMPT_RT is enabled. Reported-by: Yadi.hu <yadi.hu@windriver.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Linus Torvalds
|
bf4afc53b7 |
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Kees Cook
|
69050f8d6d |
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
a95f71ad3e |
ARM development for 7.0-rc1
Three changes: - avoid %pK for ARM MM prints - implement ARCH_HAS_CC_CAN_LINK to ensure runnable user progs - handle BE8 and BE32 for user progs -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmmYgkIACgkQ9OeQG+St rGSHrA//acBMNgZHBeCDNauJV3cvE35TPMHmgch+qwDAI1xNeUqoSqWzM7g31rYx pw9sJCroeXex13MiQ5iF3NZrGEyrAOTpb52X/zIR9fPazzhtdRWAU0KhOJ6nHA8I OgIpufk7CleDYb4rXdOJYLXvpqLsGQ7BdniW4NaNABIQpxSZ4iztaE5nFVFwudc6 JPZq2QoF6UBQjl5oLBkzrEVeASjzEP2YyBqSBANbZzYS2XbwLPOExMIj1Wqiy0QB NJ6DS6jhp5bE3imL46eG1SC6Xc8KKFvdQaE5C9Qw/Xi/tbUFDSy5SSSyBEc8Z6qH KUNi0C/i+dCpkqWij78ryr/uA8XWzqgQ8m/wMuNZM5/M06+Wn6rXS8MrZTnNSfrC BmNZqNqzfGepMHwxu4nBX+qIHRTuCAIrnSgJgfgMLfuV/JFlt2CL35EJMw93qLEA hzIE62BJeA1D/hdB7S9bUji/AtH3lKbHor2DK1KeVc70aVJncRUMwctUsxDw2jJC 0cxrYOXt2uYkluH24qevFLJNc8RiF5xmIOy3lwfVw7iTt757a23fIugzMqq5yVLv 99NS0chM4h5jaDhUvQk8wb9ru73KNvnzWE4HVJS8kQe1Zv/y7zGI3QQUUiARtUXw mtmePrh4sfkBaJdJFZDCTFnBwk9RKrBsIP5pFc23XiZaXUpYkyA= =quv+ -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux Pull ARM updates from Russell King: - avoid %pK for ARM MM prints - implement ARCH_HAS_CC_CAN_LINK to ensure runnable user progs - handle BE8 and BE32 for user progs * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: ARM: 9470/1: Handle BE8 vs BE32 in ARCH_CC_CAN_LINK ARM: 9469/1: Implement ARCH_HAS_CC_CAN_LINK ARM: 9467/1: mm: Don't use %pK through printk |
||
|
Thomas Weissschuh
|
012ea376a5 |
ARM: 9467/1: mm: Don't use %pK through printk
Restricted pointers ("%pK") were never meant to be used
through printk(). They can acquire sleeping locks in atomic contexts.
Switch to %px over the more secure %p as this usage is a debugging aid,
gated behind CONFIG_DEBUG_VIRTUAL and used by WARN().
Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
|
||
|
Mike Rapoport (Microsoft)
|
4267739cab |
arch, mm: consolidate initialization of SPARSE memory model
Every architecture calls sparse_init() during setup_arch() although the data structures created by sparse_init() are not used until the initialization of the core MM. Beside the code duplication, calling sparse_init() from architecture specific code causes ordering differences of vmemmap and HVO initialization on different architectures. Move the call to sparse_init() from architecture specific code to free_area_init() to ensure that vmemmap and HVO initialization order is always the same. Link: https://lkml.kernel.org/r/20260111082105.290734-25-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Klara Modin <klarasmodin@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Magnus Lindholm <linmag7@gmail.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Richard Weinberger <richard@nod.at> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mike Rapoport (Microsoft)
|
d49004c5f0 |
arch, mm: consolidate initialization of nodes, zones and memory map
To initialize node, zone and memory map data structures every architecture calls free_area_init() during setup_arch() and passes it an array of zone limits. Beside code duplication it creates "interesting" ordering cases between allocation and initialization of hugetlb and the memory map. Some architectures allocate hugetlb pages very early in setup_arch() in certain cases, some only create hugetlb CMA areas in setup_arch() and sometimes hugetlb allocations happen mm_core_init(). With arch_zone_limits_init() helper available now on all architectures it is no longer necessary to call free_area_init() from architecture setup code. Rather core MM initialization can call arch_zone_limits_init() in a single place. This allows to unify ordering of hugetlb vs memory map allocation and initialization. Remove the call to free_area_init() from architecture specific code and place it in a new mm_core_init_early() function that is called immediately after setup_arch(). After this refactoring it is possible to consolidate hugetlb allocations and eliminate differences in ordering of hugetlb and memory map initialization among different architectures. As the first step of this consolidation move hugetlb_bootmem_alloc() to mm_core_early_init(). Link: https://lkml.kernel.org/r/20260111082105.290734-24-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Klara Modin <klarasmodin@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Magnus Lindholm <linmag7@gmail.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Richard Weinberger <richard@nod.at> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Klara Modin
|
18b7cc70de |
arm: make initialization of zero page independent of the memory map
Unlike most architectures, arm keeps a struct page pointer to the empty_zero_page and to initialize it requires conversion of a virtual address to page which makes it necessary to have memory map initialized before creating the empty_zero_page. Make empty_zero_page a stataic array in BSS to decouple it's initialization from the initialization of the memory map. This also aligns arm with vast majorty of architectures. Link: https://lkml.kernel.org/r/20260111082105.290734-5-rppt@kernel.org Signed-off-by: Klara Modin <klarasmodin@gmail.com> Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Magnus Lindholm <linmag7@gmail.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Richard Weinberger <richard@nod.at> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mike Rapoport (Microsoft)
|
30a66f8a8c |
arm: introduce arch_zone_limits_init()
Move calculations of zone limits to a dedicated arch_zone_limits_init() function. Later MM core will use this function as an architecture specific callback during nodes and zones initialization and thus there won't be a need to call free_area_init() from every architecture. Link: https://lkml.kernel.org/r/20260111082105.290734-4-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Klara Modin <klarasmodin@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Magnus Lindholm <linmag7@gmail.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Richard Weinberger <richard@nod.at> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
29ba26af9a |
ARM development for 6.19-rc1
ARM Development changes for 6.19-rc1: - disable jump label and high PTE for PREEMPT RT kernels - fix input operand modification in load_unaligned_zeropad() - fix hash_name() / fault path induced warnings - fix branch predictor hardening The last three were only merged today after testing was complete. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmk5Z3cACgkQ9OeQG+St rGT5/A//Tl81Ae4+Dj5CvC73Qzm3xsaPpTdZbw/TnmiWLGeps5h1qunZsdT5kA0K PGGPEVEyS5F1hgl0gKEUtWyi6qs37tvB72pG/fPX2EBuryq0PLizWa2ejPw+z1J6 fKpX3C+5Fo+z8/jcL1uc0fZtw2ILnQTbxjIyKx5oJrX8yVvU+tKtfegBp6hZbQdj z9QArtc0zMyT71eEsiL0O0/cHx8m1jbtZAb8VgIr6xtTR5pdvq38rovMmua0XgEG v17pSRdfqxZldXcWNMHZlTFcmm1Zrq6twpkPMnks6TZ0u/YCqcIsY7gQLHqUCJH7 VqENeqIXN4mvufz8Hb5tQqME9NDmoJsKrDDMyyOHpe2sW4j+uVs6CAZTxmaGXbw0 Hf1xf9I4sonCh/TDloBB1++jcZWIIbCBpZ0/OuZJHEp9SJgwrk4wlFvMWdVfuzfZ gZ2TEa6r7KzqJSFEcfrNoIDvJXBNlAw7mL+QIEPLEAuJvSceqTqhWC+Kx7VS/8JZ 0lAuOP42IG6uX2K+VZ/I/agYb/Gip8HcrgletQFzid4C8QMkB7z3Dq76gbe/0f0f US1mZFBnzujq/kDC43IzPphVU+5WTyn8YWCz2LzoTZ3RN+4SlIkq5ZnFreOk/aGU sQj+SkNhJX9qFHdijONmqef6f7miIH8iPMmp58WFYvulrdYnMHg= =dtsd -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux Pull ARM updates from Russell King: - disable jump label and high PTE for PREEMPT RT kernels - fix input operand modification in load_unaligned_zeropad() - fix hash_name() / fault path induced warnings - fix branch predictor hardening * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: ARM: fix branch predictor hardening ARM: fix hash_name() fault ARM: allow __do_kernel_fault() to report execution of memory faults ARM: group is_permission_fault() with is_translation_fault() ARM: 9464/1: fix input-only operand modification in load_unaligned_zeropad() ARM: 9461/1: Disable HIGHPTE on PREEMPT_RT kernels ARM: 9459/1: Disable jump-label on PREEMPT_RT |
||
|
Russell King (Oracle)
|
fd2dee1c6e |
ARM: fix branch predictor hardening
__do_user_fault() may be called with indeterminent interrupt enable state, which means we may be preemptive at this point. This causes problems when calling harden_branch_predictor(). For example, when called from a data abort, do_alignment_fault()->do_bad_area(). Move harden_branch_predictor() out of __do_user_fault() and into the calling contexts. Moving it into do_kernel_address_page_fault(), we can be sure that interrupts will be disabled here. Converting do_translation_fault() to use do_kernel_address_page_fault() rather than do_bad_area() means that we keep branch predictor handling for translation faults. Interrupts will also be disabled at this call site. do_sect_fault() needs special handling, so detect user mode accesses to kernel-addresses, and add an explicit call to branch predictor hardening. Finally, add branch predictor hardening to do_alignment() for the faulting case (user mode accessing kernel addresses) before interrupts are enabled. This should cover all cases where harden_branch_predictor() is called, ensuring that it is always has interrupts disabled, also ensuring that it is called early in each call path. Reviewed-by: Xie Yuanbin <xieyuanbin1@huawei.com> Tested-by: Xie Yuanbin <xieyuanbin1@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
7733bc7d29 |
ARM: fix hash_name() fault
Zizhi Wo reports: "During the execution of hash_name()->load_unaligned_zeropad(), a potential memory access beyond the PAGE boundary may occur. For example, when the filename length is near the PAGE_SIZE boundary. This triggers a page fault, which leads to a call to do_page_fault()->mmap_read_trylock(). If we can't acquire the lock, we have to fall back to the mmap_read_lock() path, which calls might_sleep(). This breaks RCU semantics because path lookup occurs under an RCU read-side critical section." This is seen with CONFIG_DEBUG_ATOMIC_SLEEP=y and CONFIG_KFENCE=y. Kernel addresses (with the exception of the vectors/kuser helper page) do not have VMAs associated with them. If the vectors/kuser helper page faults, then there are two possibilities: 1. if the fault happened while in kernel mode, then we're basically dead, because the CPU won't be able to vector through this page to handle the fault. 2. if the fault happened while in user mode, that means the page was protected from user access, and we want to fault anyway. Thus, we can handle kernel addresses from any context entirely separately without going anywhere near the mmap lock. This gives us an entirely non-sleeping path for all kernel mode kernel address faults. As we handle the kernel address faults before interrupts are enabled, this change has the side effect of improving the branch predictor hardening, but does not completely solve the issue. Reported-by: Zizhi Wo <wozizhi@huaweicloud.com> Reported-by: Xie Yuanbin <xieyuanbin1@huawei.com> Link: https://lore.kernel.org/r/20251126090505.3057219-1-wozizhi@huaweicloud.com Reviewed-by: Xie Yuanbin <xieyuanbin1@huawei.com> Tested-by: Xie Yuanbin <xieyuanbin1@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
40b466db1d |
ARM: allow __do_kernel_fault() to report execution of memory faults
Allow __do_kernel_fault() to detect the execution of memory, so we can provide the same fault message as do_page_fault() would do. This is required when we split the kernel address fault handling from the main do_page_fault() code path. Reviewed-by: Xie Yuanbin <xieyuanbin1@huawei.com> Tested-by: Xie Yuanbin <xieyuanbin1@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Russell King (Oracle)
|
dea20281ac |
ARM: group is_permission_fault() with is_translation_fault()
Group is_permission_fault() with is_translation_fault(), which is needed to use is_permission_fault() in __do_kernel_fault(). As this is static inline, there is no need for this to be under CONFIG_MMU. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
||
|
Linus Torvalds
|
a7405aa92f |
dma-mapping updates for Linux 6.19:
- next part of DMA mapping API refactoring to physical addresses as the primary interface instead of page+offset parameters; this time dma_map_ops callbacks are converted to physical addresses, what in turn results also in some simplification of architecture specific code (Leon Romanovsky and Jason Gunthorpe) - clarify that dma_map_benchmark is not a kernel self-test, but standalone tool (Qinxin Xia) -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCaTLpeQAKCRCJp1EFxbsS RKlAAQCo/gVslheoJ+h4Hk5oUjLfVQaiamJOlzxw12EVHVAs3AEA7GILIAL1GbGn EpkgwjIuz/J/4aGhNbYO6J+C1qMAHww= =aM6P -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping updates from Marek Szyprowski: - More DMA mapping API refactoring to physical addresses as the primary interface instead of page+offset parameters. This time dma_map_ops callbacks are converted to physical addresses, what in turn results also in some simplification of architecture specific code (Leon Romanovsky and Jason Gunthorpe) - Clarify that dma_map_benchmark is not a kernel self-test, but standalone tool (Qinxin Xia) * tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-mapping: remove unused map_page callback xen: swiotlb: Convert mapping routine to rely on physical address x86: Use physical address for DMA mapping sparc: Use physical address DMA mapping powerpc: Convert to physical address DMA mapping parisc: Convert DMA map_page to map_phys interface MIPS/jazzdma: Provide physical address directly alpha: Convert mapping routine to rely on physical address dma-mapping: remove unused mapping resource callbacks xen: swiotlb: Switch to physical address mapping callbacks ARM: dma-mapping: Switch to physical address mapping callbacks ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*() dma-mapping: convert dummy ops to physical address mapping dma-mapping: prepare dma_map_ops to conversion to physical address tools/dma: move dma_map_benchmark from selftests to tools/dma |
||
|
Thierry Reding
|
a97fbc3ee3 |
syscore: Pass context data to callbacks
Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com> |
||
|
Leon Romanovsky
|
50b149be07 |
ARM: dma-mapping: Switch to physical address mapping callbacks
Combine resource and page mappings routines to one function, which handles both these flows at the same manner. This conversion allows us to remove .map_resource/.unmap_resource callbacks completely. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20251015-remove-map-page-v5-4-3bbfe3a25cdf@kernel.org |