Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'next' into for-linus

Prepare input updates for 7.1 merge window.

Merge tag 'v7.0-rc3' into next

Sync up with the mainline to brig up the latest changes, specifically
changes to ALPS driver.

Merge branch 'for-7.1-printf-kunit-build' into for-linus

Merge branch 'for-7.1/core-v2' into for-linus

- fixed handling of 0-sized reports (Dmitry Torokhov)
- convert core code to __free() (Dmitry Torokhov)
- support for multiple batteries per HID device

Merge branch 'for-7.1/core-v2' into for-linus

- fixed handling of 0-sized reports (Dmitry Torokhov)
- convert core code to __free() (Dmitry Torokhov)
- support for multiple batteries per HID device (Lucas Zampieri)

show more ...

Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

- "maple_tree: Replace big node with maple copy" (Liam Howlett)

Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

- "maple_tree: Replace big node with maple copy" (Liam Howlett)

Mainly prepararatory work for ongoing development but it does reduce
stack usage and is an improvement.

- "mm, swap: swap table phase III: remove swap_map" (Kairui Song)

Offers memory savings by removing the static swap_map. It also yields
some CPU savings and implements several cleanups.

- "mm: memfd_luo: preserve file seals" (Pratyush Yadav)

File seal preservation to LUO's memfd code

- "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan
Chen)

Additional userspace stats reportng to zswap

- "arch, mm: consolidate empty_zero_page" (Mike Rapoport)

Some cleanups for our handling of ZERO_PAGE() and zero_pfn

- "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu
Han)

A robustness improvement and some cleanups in the kmemleak code

- "Improve khugepaged scan logic" (Vernon Yang)

Improve khugepaged scan logic and reduce CPU consumption by
prioritizing scanning tasks that access memory frequently

- "Make KHO Stateless" (Jason Miu)

Simplify Kexec Handover by transitioning KHO from an xarray-based
metadata tracking system with serialization to a radix tree data
structure that can be passed directly to the next kernel

- "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas
Ballasi and Steven Rostedt)

Enhance vmscan's tracepointing

- "mm: arch/shstk: Common shadow stack mapping helper and
VM_NOHUGEPAGE" (Catalin Marinas)

Cleanup for the shadow stack code: remove per-arch code in favour of
a generic implementation

- "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin)

Fix a WARN() which can be emitted the KHO restores a vmalloc area

- "mm: Remove stray references to pagevec" (Tal Zussman)

Several cleanups, mainly udpating references to "struct pagevec",
which became folio_batch three years ago

- "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl
Shutsemau)

Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail
pages encode their relationship to the head page

- "mm/damon/core: improve DAMOS quota efficiency for core layer
filters" (SeongJae Park)

Improve two problematic behaviors of DAMOS that makes it less
efficient when core layer filters are used

- "mm/damon: strictly respect min_nr_regions" (SeongJae Park)

Improve DAMON usability by extending the treatment of the
min_nr_regions user-settable parameter

- "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka)

The proper fix for a previously hotfixed SMP=n issue. Code
simplifications and cleanups ensued

- "mm: cleanups around unmapping / zapping" (David Hildenbrand)

A bunch of cleanups around unmapping and zapping. Mostly
simplifications, code movements, documentation and renaming of
zapping functions

- "support batched checking of the young flag for MGLRU" (Baolin Wang)

Batched checking of the young flag for MGLRU. It's part cleanups; one
benchmark shows large performance benefits for arm64

- "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner)

memcg cleanup and robustness improvements

- "Allow order zero pages in page reporting" (Yuvraj Sakshith)

Enhance free page reporting - it is presently and undesirably order-0
pages when reporting free memory.

- "mm: vma flag tweaks" (Lorenzo Stoakes)

Cleanup work following from the recent conversion of the VMA flags to
a bitmap

- "mm/damon: add optional debugging-purpose sanity checks" (SeongJae
Park)

Add some more developer-facing debug checks into DAMON core

- "mm/damon: test and document power-of-2 min_region_sz requirement"
(SeongJae Park)

An additional DAMON kunit test and makes some adjustments to the
addr_unit parameter handling

- "mm/damon/core: make passed_sample_intervals comparisons
overflow-safe" (SeongJae Park)

Fix a hard-to-hit time overflow issue in DAMON core

- "mm/damon: improve/fixup/update ratio calculation, test and
documentation" (SeongJae Park)

A batch of misc/minor improvements and fixups for DAMON

- "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David
Hildenbrand)

Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code
movement was required.

- "zram: recompression cleanups and tweaks" (Sergey Senozhatsky)

A somewhat random mix of fixups, recompression cleanups and
improvements in the zram code

- "mm/damon: support multiple goal-based quota tuning algorithms"
(SeongJae Park)

Extend DAMOS quotas goal auto-tuning to support multiple tuning
algorithms that users can select

- "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao)

Fix the khugpaged sysfs handling so we no longer spam the logs with
reams of junk when starting/stopping khugepaged

- "mm: improve map count checks" (Lorenzo Stoakes)

Provide some cleanups and slight fixes in the mremap, mmap and vma
code

- "mm/damon: support addr_unit on default monitoring targets for
modules" (SeongJae Park)

Extend the use of DAMON core's addr_unit tunable

- "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache)

Cleanups to khugepaged and is a base for Nico's planned khugepaged
mTHP support

- "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand)

Code movement and cleanups in the memhotplug and sparsemem code

- "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup
CONFIG_MIGRATION" (David Hildenbrand)

Rationalize some memhotplug Kconfig support

- "change young flag check functions to return bool" (Baolin Wang)

Cleanups to change all young flag check functions to return bool

- "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh
Law and SeongJae Park)

Fix a few potential DAMON bugs

- "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo
Stoakes)

Convert a lot of the existing use of the legacy vm_flags_t data type
to the new vma_flags_t type which replaces it. Mainly in the vma
code.

- "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes)

Expand the mmap_prepare functionality, which is intended to replace
the deprecated f_op->mmap hook which has been the source of bugs and
security issues for some time. Cleanups, documentation, extension of
mmap_prepare into filesystem drivers

- "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes)

Simplify and clean up zap_huge_pmd(). Additional cleanups around
vm_normal_folio_pmd() and the softleaf functionality are performed.

* tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
mm: fix deferred split queue races during migration
mm/khugepaged: fix issue with tracking lock
mm/huge_memory: add and use has_deposited_pgtable()
mm/huge_memory: add and use normal_or_softleaf_folio_pmd()
mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio()
mm/huge_memory: separate out the folio part of zap_huge_pmd()
mm/huge_memory: use mm instead of tlb->mm
mm/huge_memory: remove unnecessary sanity checks
mm/huge_memory: deduplicate zap deposited table call
mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE()
mm/huge_memory: add a common exit path to zap_huge_pmd()
mm/huge_memory: handle buggy PMD entry in zap_huge_pmd()
mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc
mm/huge: avoid big else branch in zap_huge_pmd()
mm/huge_memory: simplify vma_is_specal_huge()
mm: on remap assert that input range within the proposed VMA
mm: add mmap_action_map_kernel_pages[_full]()
uio: replace deprecated mmap hook with mmap_prepare in uio_info
drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare
mm: allow handling of stacked mmap_prepare hooks in more drivers
...

show more ...

selftests/mm: add folio_split() and filemap_get_entry() race test

The added folio_split_race_test is a modified C port of the race condition
test from [1]. The test creates shmem huge pages, where

selftests/mm: add folio_split() and filemap_get_entry() race test

The added folio_split_race_test is a modified C port of the race condition
test from [1]. The test creates shmem huge pages, where the main thread
punches holes in the shmem to cause folio_split() in the kernel and a set
of 16 threads reads the shmem to cause filemap_get_entry() in the kernel.
filemap_get_entry() reads the folio and xarray split by folio_split()
locklessly. The original test[2] is written in rust and uses memfd (shmem
backed). This C port uses shmem directly and use a single process.

Note: the initial rust to C conversion is done by Cursor.

Link: https://lore.kernel.org/all/CAKNNEtw5_kZomhkugedKMPOG-sxs5Q5OLumWJdiWXv+C9Yct0w@mail.gmail.com/ [1]
Link: https://github.com/dfinity/thp-madv-remove-test [2]
Link: https://lkml.kernel.org/r/20260323163717.184107-1-ziy@nvidia.com
Co-developed-by: Bas van Dijk <bas@dfinity.org>
Signed-off-by: Bas van Dijk <bas@dfinity.org>
Co-developed-by: Adam Bratschi-Kaye <adam.bratschikaye@dfinity.org>
Signed-off-by: Adam Bratschi-Kaye <adam.bratschikaye@dfinity.org>
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THP
support.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>

Merge drm/drm-next into drm-intel-next

Sync with v7.0-rc1 which contains a few treewide changes affecting i915.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-misc-next

Let's merge 7.0-rc1 to start the new drm-misc-next window

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf before 7.0-rc1

Cross-merge BPF and other fixes after downstream PR.

No conflicts.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

7.0-rc1 was just released, let's merge it to kick the new release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

- "mm/vmscan: fix demotion targets checks in reclaim/demot

Merge tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

- "mm/vmscan: fix demotion targets checks in reclaim/demotion" fixes a
couple of issues in the demotion code - pages were failed demotion
and were finding themselves demoted into disallowed nodes (Bing Jiao)

- "Remove XA_ZERO from error recovery of dup_mmap()" fixes a rare
mapledtree race and performs a number of cleanups (Liam Howlett)

- "mm: add bitmap VMA flag helpers and convert all mmap_prepare to use
them" implements a lot of cleanups following on from the conversion
of the VMA flags into a bitmap (Lorenzo Stoakes)

- "support batch checking of references and unmapping for large folios"
implements batching to greatly improve the performance of reclaiming
clean file-backed large folios (Baolin Wang)

- "selftests/mm: add memory failure selftests" does as claimed (Miaohe
Lin)

* tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (36 commits)
mm/page_alloc: clear page->private in free_pages_prepare()
selftests/mm: add memory failure dirty pagecache test
selftests/mm: add memory failure clean pagecache test
selftests/mm: add memory failure anonymous page test
mm: rmap: support batched unmapping for file large folios
arm64: mm: implement the architecture-specific clear_flush_young_ptes()
arm64: mm: support batch clearing of the young flag for large folios
arm64: mm: factor out the address and ptep alignment into a new helper
mm: rmap: support batched checks of the references for large folios
tools/testing/vma: add VMA userland tests for VMA flag functions
tools/testing/vma: separate out vma_internal.h into logical headers
tools/testing/vma: separate VMA userland tests into separate files
mm: make vm_area_desc utilise vma_flags_t only
mm: update all remaining mmap_prepare users to use vma_flags_t
mm: update shmem_[kernel]_file_*() functions to use vma_flags_t
mm: update secretmem to use VMA flags on mmap_prepare
mm: update hugetlbfs to use VMA flags on mmap_prepare
mm: add basic VMA flag operation helper functions
tools: bitmap: add missing bitmap_[subset(), andnot()]
mm: add mk_vma_flags() bitmap flag macro helper
...

show more ...

selftests/mm: add memory failure anonymous page test

Patch series "selftests/mm: add memory failure selftests", v4.

Introduce selftests to validate the functionality of memory failure.
These tests

selftests/mm: add memory failure anonymous page test

Patch series "selftests/mm: add memory failure selftests", v4.

Introduce selftests to validate the functionality of memory failure.
These tests help ensure that memory failure handling for anonymous pages,
pagecaches pages works correctly, including proper SIGBUS delivery to user
processes, page isolation, and recovery paths.

Currently madvise syscall is used to inject memory failures. And only
anonymous pages and pagecaches are tested. More test scenarios, e.g.
hugetlb, shmem, thp, will be added. Also more memory failure injecting
methods will be supported, e.g. APEI Error INJection, if required.


This patch (of 3):

This patch adds a new kselftest to validate memory failure handling for
anonymous pages. The test performs the following operations:
1. Allocates anonymous pages using mmap().
2. Injects memory failure via madvise syscall.
3. Verifies expected error handling behavior.
4. Unpoison memory.

This test helps ensure that memory failure handling for anonymous pages
works correctly, including proper SIGBUS delivery to user processes, page
isolation and recovery paths.

Link: https://lkml.kernel.org/r/20260206031639.2707102-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20260206031639.2707102-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: kernel test robot <lkp@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

Merge tag 'loongarch-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:
- Select HAVE_CMPXCHG_{LOCAL,DOUBLE}
- Add 128-bit ato

Merge tag 'loongarch-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:
- Select HAVE_CMPXCHG_{LOCAL,DOUBLE}
- Add 128-bit atomic cmpxchg support
- Add HOTPLUG_SMT implementation
- Wire up memfd_secret system call
- Fix boot errors and unwind errors for KASAN
- Use BPF prog pack allocator and add BPF arena support
- Update dts files to add nand controllers
- Some bug fixes and other small changes

* tag 'loongarch-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: dts: loongson-2k1000: Add nand controller support
LoongArch: dts: loongson-2k0500: Add nand controller support
LoongArch: BPF: Implement bpf_addr_space_cast instruction
LoongArch: BPF: Implement PROBE_MEM32 pseudo instructions
LoongArch: BPF: Use BPF prog pack allocator
LoongArch: Use IS_ERR_PCPU() macro for KGDB
LoongArch: Rework KASAN initialization for PTW-enabled systems
LoongArch: Disable instrumentation for setup_ptwalker()
LoongArch: Remove some extern variables in source files
LoongArch: Guard percpu handler under !CONFIG_PREEMPT_RT
LoongArch: Handle percpu handler address for ORC unwinder
LoongArch: Use %px to print unmodified unwinding address
LoongArch: Prefer top-down allocation after arch_mem_init()
LoongArch: Add HOTPLUG_SMT implementation
LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE
LoongArch: Wire up memfd_secret system call
LoongArch: Replace seq_printf() with seq_puts() for simple strings
LoongArch: Add 128-bit atomic cmpxchg support
LoongArch: Add detection for SC.Q support
LoongArch: Select HAVE_CMPXCHG_LOCAL in Kconfig

show more ...

Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

- "powerpc/64s: do not re-activate batched TLB flush" makes
a

Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

- "powerpc/64s: do not re-activate batched TLB flush" makes
arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev)

It adds a generic enter/leave layer and switches architectures to use
it. Various hacks were removed in the process.

- "zram: introduce compressed data writeback" implements data
compression for zram writeback (Richard Chang and Sergey Senozhatsky)

- "mm: folio_zero_user: clear page ranges" adds clearing of contiguous
page ranges for hugepages. Large improvements during demand faulting
are demonstrated (David Hildenbrand)

- "memcg cleanups" tidies up some memcg code (Chen Ridong)

- "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos
stats" improves DAMOS stat's provided information, deterministic
control, and readability (SeongJae Park)

- "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few
issues in the hugetlb cgroup charging selftests (Li Wang)

- "Fix va_high_addr_switch.sh test failure - again" addresses several
issues in the va_high_addr_switch test (Chunyu Hu)

- "mm/damon/tests/core-kunit: extend existing test scenarios" improves
the KUnit test coverage for DAMON (Shu Anzai)

- "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a
glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to
transiently return -EAGAIN (Shivank Garg)

- "arch, mm: consolidate hugetlb early reservation" reworks and
consolidates a pile of straggly code related to reservation of
hugetlb memory from bootmem and creation of CMA areas for hugetlb
(Mike Rapoport)

- "mm: clean up anon_vma implementation" cleans up the anon_vma
implementation in various ways (Lorenzo Stoakes)

- "tweaks for __alloc_pages_slowpath()" does a little streamlining of
the page allocator's slowpath code (Vlastimil Babka)

- "memcg: separate private and public ID namespaces" cleans up the
memcg ID code and prevents the internal-only private IDs from being
exposed to userspace (Shakeel Butt)

- "mm: hugetlb: allocate frozen gigantic folio" cleans up the
allocation of frozen folios and avoids some atomic refcount
operations (Kefeng Wang)

- "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement
of memory betewwn the active and inactive LRUs and adds auto-tuning
of the ratio-based quotas and of monitoring intervals (SeongJae Park)

- "Support page table check on PowerPC" makes
CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan)

- "nodemask: align nodes_and{,not} with underlying bitmap ops" makes
nodes_and() and nodes_andnot() propagate the return values from the
underlying bit operations, enabling some cleanup in calling code
(Yury Norov)

- "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up
some DAMON internal interfaces (SeongJae Park)

- "mm/khugepaged: cleanups and scan limit fix" does some cleanup work
in khupaged and fixes a scan limit accounting issue (Shivank Garg)

- "mm: balloon infrastructure cleanups" goes to town on the balloon
infrastructure and its page migration function. Mainly cleanups, also
some locking simplification (David Hildenbrand)

- "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds
additional tracepoints to the page reclaim code (Jiayuan Chen)

- "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is
part of Marco's kernel-wide migration from the legacy workqueue APIs
over to the preferred unbound workqueues (Marco Crivellari)

- "Various mm kselftests improvements/fixes" provides various unrelated
improvements/fixes for the mm kselftests (Kevin Brodsky)

- "mm: accelerate gigantic folio allocation" greatly speeds up gigantic
folio allocation, mainly by avoiding unnecessary work in
pfn_range_valid_contig() (Kefeng Wang)

- "selftests/damon: improve leak detection and wss estimation
reliability" improves the reliability of two of the DAMON selftests
(SeongJae Park)

- "mm/damon: cleanup kdamond, damon_call(), damos filter and
DAMON_MIN_REGION" does some cleanup work in the core DAMON code
(SeongJae Park)

- "Docs/mm/damon: update intro, modules, maintainer profile, and misc"
performs maintenance work on the DAMON documentation (SeongJae Park)

- "mm: add and use vma_assert_stabilised() helper" refactors and cleans
up the core VMA code. The main aim here is to be able to use the mmap
write lock's lockdep state to perform various assertions regarding
the locking which the VMA code requires (Lorenzo Stoakes)

- "mm, swap: swap table phase II: unify swapin use" removes some old
swap code (swap cache bypassing and swap synchronization) which
wasn't working very well. Various other cleanups and simplifications
were made. The end result is a 20% speedup in one benchmark (Kairui
Song)

- "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM
available on 64-bit alpha, loongarch, mips, parisc, and um. Various
cleanups were performed along the way (Qi Zheng)

* tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits)
mm/memory: handle non-split locks correctly in zap_empty_pte_table()
mm: move pte table reclaim code to memory.c
mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE
mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config
um: mm: enable MMU_GATHER_RCU_TABLE_FREE
parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE
mips: mm: enable MMU_GATHER_RCU_TABLE_FREE
LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE
alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE
mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h
mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles
zsmalloc: make common caches global
mm: add SPDX id lines to some mm source files
mm/zswap: use %pe to print error pointers
mm/vmscan: use %pe to print error pointers
mm/readahead: fix typo in comment
mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file()
mm: refactor vma_map_pages to use vm_insert_pages
mm/damon: unify address range representation with damon_addr_range
mm/cma: replace snprintf with strscpy in cma_new_area
...

show more ...

LoongArch: Wire up memfd_secret system call

LoongArch supports ARCH_HAS_SET_DIRECT_MAP, therefore wire up the
memfd_secret system call, which just depends on it.

Acked-by: Arnd Bergmann <arnd@arndb

LoongArch: Wire up memfd_secret system call

LoongArch supports ARCH_HAS_SET_DIRECT_MAP, therefore wire up the
memfd_secret system call, which just depends on it.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Signed-off-by: Lain "Fearyncess" Yang <fearyncess@aosc.io>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

show more ...

selftests/mm: have the harness run each test category separately

At present the mm selftests are integrated into the kselftest harness by
having it run run_vmtest.sh and letting it pick it's default

selftests/mm: have the harness run each test category separately

At present the mm selftests are integrated into the kselftest harness by
having it run run_vmtest.sh and letting it pick it's default set of tests
to invoke, rather than by telling the kselftest framework about each test
program individually as is more standard. This has some unfortunate
interactions with the kselftest harness:

- If any of the tests hangs the harness will kill the entire mm
selftests run rather than just the individual test, meaning no
further tests get run.
- The timeout applied by the harness is applied to the whole run rather
than an individual test which frequently leads to the suite not being
completed in production testing.

Deploy a crude but effective mitigation for these issues by telling the
kselftest framework to run each of the test categories that run_vmtests.sh
has separately. Since kselftest really wants to run test programs this is
done by providing a trivial wrapper script for each categorty that invokes
run_vmtest.sh, this is not a thing of great elegence but it is clear and
simple. Since run_vmtests.sh is doing runtime support detection, scenario
enumeration and setup for many of the tests we can't consistently tell the
framework about the individual test programs.

This has the side effect of reordering the tests, hopefully the testing
is not overly sensitive to this.

Link: https://lkml.kernel.org/r/20260123-selftests-mm-run-suites-separately-v2-1-3e934edacbfa@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

selftests/mm: remove virtual_address_range test

This self test is asserting internal implementation details and is highly
vulnerable to internal kernel changes as a result.

It is currently failing

selftests/mm: remove virtual_address_range test

This self test is asserting internal implementation details and is highly
vulnerable to internal kernel changes as a result.

It is currently failing locally from at least v6.17, and it seems that it
may have been failing for longer in many configurations/hardware as it
skips if e.g. CONFIG_ANON_VMA_NAME is not specified.

With these skips and the fact that run_vmtests.sh won't run the tests in
certain configurations it is likely we have simply missed this test being
broken in CI for a long while.

I have tried multiple versions of these tests and am unable to find a
working bisect as previous versions of the test fail also.

The tests are essentially mmap()'ing a series of mappings with no hint and
asserting what the get_unmapped_area*() functions will come up with, with
seemingly few checks for what other mappings may already be in place.

It then appears to be mmap()'ing with a hint, and making a series of
similar assertions about the internal implementation details of the
hinting logic.

Commit 0ef3783d7558 ("selftests/mm: add support to test 4PB VA on PPC64"),
commit 3bd6137220bb ("selftests/mm: virtual_address_range: avoid reading
from VM_IO mappings"), and especially commit a005145b9c96 ("selftests/mm:
virtual_address_range: mmap() without PROT_WRITE") are good examples of
the whack-a-mole nature of maintaining this test.

The last commit there being particularly pertinent as it was accounting
for an internal implementation detail change that really should have no
bearing on self-tests, that is commit e93d2521b27f ("x86/vdso: Split
virtual clock pages into dedicated mapping").

The purpose of the mm self-tests are to assert attributes about the API
exposed to users, and to ensure that expectations are met.

This test is emphatically not doing this, rather making a series of
assumptions about internal implementation details and asserting them.

It therefore, sadly, seems that the best course is to remove this test
altogether.

Link: https://lkml.kernel.org/r/20260116132053.857887-1-lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

selftests/mm: pass down full CC and CFLAGS to check_config.sh

check_config.sh checks that liburing is available by running the compiler
provided as its first argument. This makes two assumptions:

selftests/mm: pass down full CC and CFLAGS to check_config.sh

check_config.sh checks that liburing is available by running the compiler
provided as its first argument. This makes two assumptions:

1. CC consists of only one word
2. No extra flag is required

Unfortunately, there are many situations where these assumptions don't
hold. For instance:

- When using Clang, CC consists of multiple words
- When cross-compiling, extra flags may be required to allow the
compiler to find headers

Remove these assumptions by passing down CC and CFLAGS as-is from the
Makefile, so that the same command line is used as when actually building
the tests.

Link: https://lkml.kernel.org/r/20260122170224.4056513-4-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Usama Anjum <Usama.Anjum@arm.com>
Cc: wang lian <lianux.mm@gmail.com>
Cc: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

selftests/mm: remove flaky header check

Commit 96ed62ea0298 ("mm: page_frag: fix a compile error when kernel is
not compiled") introduced a check to avoid attempting to build the
page_frag module if

selftests/mm: remove flaky header check

Commit 96ed62ea0298 ("mm: page_frag: fix a compile error when kernel is
not compiled") introduced a check to avoid attempting to build the
page_frag module if <linux/page_frag_cache.h> is missing.

Unfortunately this check only works if KDIR points to /lib/modules/... or
an in-tree kernel build. It always fails if KDIR points to an out-of-tree
build (i.e. when the kernel was built with O=... make) because only
generated headers are present under $KDIR/include/ in that case.

A recent commit switched KDIR to default to the kernel's build directory,
so that check is no longer justified.

Link: https://lkml.kernel.org/r/20260122170224.4056513-3-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Yunsheng Lin <linyunsheng@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Usama Anjum <Usama.Anjum@arm.com>
Cc: wang lian <lianux.mm@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

selftests/mm: default KDIR to build directory

Patch series "Various mm kselftests improvements/fixes", v3.

Various improvements/fixes for the mm kselftests:

- Patch 1-3 extend support for more bui

selftests/mm: default KDIR to build directory

Patch series "Various mm kselftests improvements/fixes", v3.

Various improvements/fixes for the mm kselftests:

- Patch 1-3 extend support for more build configurations: out-of-tree
$KDIR, cross-compilation, etc.

- Patch 4-7 fix issues related to faulting in pages, introducing a new
helper for that purpose.

- Patch 8 fixes the value returned by pagemap_ioctl (PASS was always
returned, which explains why the issue fixed in patch 6 went
unnoticed).

- Patch 9 improves the exit code of pfnmap.

Net results:
- 1 test no longer fails (patch 7)
- 3 tests are no longer skipped (patch 4)
- More accurate return values for whole suites (patch 8, 9)
- Extra tests are more likely to be built (patch 1-3)


This patch (of 9):

KDIR currently defaults to the running kernel's modules directory when
building the page_frag module. The underlying assumption is that most
users build the kselftests in order to run them against the system they're
built on.

This assumption seems questionable, and there is no guarantee that the
module can actually be built against the running kernel.

Switch the default value of KDIR to the kernel's build directory, i.e.
$(O) if O= or KBUILD_OUTPUT= is used, and the source directory otherwise.
This seems like the least surprising option: the test module is built
against the kernel that has been previously built.

Note: we can't use $(top_srcdir) in mm/Makefile because it is only defined
once lib.mk is included.

Link: https://lkml.kernel.org/r/20260122170224.4056513-1-kevin.brodsky@arm.com
Link: https://lkml.kernel.org/r/20260122170224.4056513-2-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Usama Anjum <Usama.Anjum@arm.com>
Cc: wang lian <lianux.mm@gmail.com>
Cc: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

Merge tag 'v6.18' into next

Sync up with the mainline to bring in the latest APIs.

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Back-merge drm-next to get caught up.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 6.18-rc1.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>