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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Add support for crash hotplug
- Improve user copy performance on cores with fast misaligned accesses
- Optimize code paths involving pgtable_l{4,5}_enabled() by patching in
the return values during early boot (since these don't change during
runtime), or by specifying the return values directly in Kconfig
files (for purpose-built kernels)
- Change the PCIe bus reassignment behavior to depend on the
PCI_REASSIGN_ALL_BUS PCI flag (as ARM64 does)
- Avoid an unnecessary sstatus CSR read during context switch
- Make the sbi_ecall() macro variadic, improving code clarity
- Refactor __switch_to_vector() to prepare for upcoming vector context
switch optimizations
- Add a kselftest for vectorized user copy
- Add bounds checking on the shadow stack restore token address to
avoid it being used as an attack vector
- Fix the shadow stack and indirect branch landing pad control
functions to only update the CPU's envcfg CSR when operating on the
current task
- For MIPS RISC-V systems, add support for early boot-applied errata;
and for P8700 RISC-V systems, avoid WFI usage in the kernel (since it
is buggy)
- Add the "B" RISC-V ISA extension to hwcap and hwprobe reporting
- Add support for specifying and reporting the "Zic64b" RISC-V ISA
extension, and add it to the SpacemiT K1, K3, and Sophgo SG2044 DT
files
- Require the block size of cache management operations to be specified
in DT schema validation for the RISC-V ISA extensions Zicbom, Zicbop,
and Zicboz
- Some miscellaneous fixes: fix an incorrect bitfield width in the
RVG_SYSTEM_CSR_MASK bitmask macro; make RISCV_ALTERNATIVE mandatory,
now that XIP kernel support has been removed; and remove some
unnecessary includes in kernel/smp.c
* tag 'riscv-for-linus-7.4-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (28 commits)
riscv: mm: unexport _pgtable_l4_enabled and _pgtable_l5_enabled
riscv: introduce RISCV_ISA_SV48 and RISCV_ISA_SV57
riscv: support early isa ext and use it to optimize pgtable_l4|l5_enabled
riscv: convert pgtable_l4|l5_enabled to inline function
riscv: remove RISCV_ALTERNATIVE Kconfig option
riscv: Add a getter for user PMLEN support
riscv: dts: sophgo: sg2044: Add Zic64b ISA extension
riscv: dts: spacemit: k1: Add Zic64b ISA extension
riscv: dts: spacemit: k3: Add Zic64b ISA extension
riscv: Add Zic64b to cpufeature and hwprobe
dt-bindings: riscv: Add Zic64b extension description
dt-bindings: riscv: Require block-size for Zicbom, Zicbop, and Zicboz
riscv: Add B to hwcap and hwprobe
riscv: remove unused profile.h includes
riscv: cfi: Only write envcfg CSR when task is current
riscv: cfi: Bounds check restore token before swap
riscv: Add ERRATA_MIPS_P8700_WFI to replace WFI with mips.pause
selftest: riscv: test vectorized user copy
riscv: vector: refactor context switch for kernel-mode vector
riscv: do not read csr in vector context switch
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"The usual updates for laptop quirks from HP, ASUS, Acer, Dell etc:
- new model names and recent CPU support
- more special button / function key handling
- battery and hardware monitoring quirks
Tool updates to intel-speed-select
WMI now supports non-x86 architectures
Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (237 commits)
platform/x86: asus-wmi: name the TUF keyboard RGB state and speed codes
platform/x86: asus-wmi: fix TUF keyboard power state shutdown naming
platform/x86: asus-wmi: rename TUF RGB state DEVID to _CMD
platform/x86: asus-armoury: add power limits quirk for GU605CM
platform/x86: asus-armoury: add power limits quirk for G533QS
platform/x86: asus-armoury: add power limits quirk for GA402NV
platform/x86: asus-armoury: add power limits quirk for FA608UP
platform/x86: asus-armoury: add power limits quirk for FA608UH
platform/x86: asus-armoury: add power limits quirk for FA608PM
platform/x86: asus-armoury: add power limits quirk for G713QR
platform/x86: ibm_rtl: Fix potential OOB read at signature search
platform/x86: acer-wmi: Add support for Acer Nitro AN16-41
platform/x86: acer-wmi: Cycle platform profile on mode key 0x4
platform/x86: hp-wmi: Disable hwmon attributes when no fans are usable
platform/x86: gpd pocket fan: Cancel work before releasing GPIOs
platform/x86: asus-armoury: Add XBOX ROG Ally X 20 Tunables
platform/x86: msi-wmi: Ignore WMI events for keys also handled by atkbd
platform/x86: msi-wmi: Sort scancodes numerically
platform: arm64: Add a driver for the EC found on ASUS Glymur machines
MAINTAINERS: Add myself as a LENOVO drivers co-maintainer
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git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull IOMMU updates from Joerg Roedel:
"Core:
- Detect scatterlist length overflows and finalize deferred domain
attachments before mapping MSI pages
- Consolidate x86 MSI reserved-region handling and clean up internal
DMA and SVA helpers
AMD IOMMU:
- Add IOMMU PerfOpt support, enabled by amdgpu for supported
integrated GPUs in identity domains
- Restrict forced identity mapping to GPUs that require it
- Fix kdump device-table allocation and reuse, ATS configuration
error handling, and an interrupt-remapping allocation leak
- Clean up device probing and initialization
- Add Vasant Hegde as an AMD IOMMU maintainer
ARM SMMUv2:
- Device-tree binding updates for Qualcomm Maili and Nord SoCs
ARM SMMUv3:
- Work around hardware integration issue on Google Tensor G5 SoCs
where all DMA transactions appear as instruction fetches
- Allow command queue size to be configured on the kernel
command-line
- Reduce queue sizes when running as a kdump kernel
- Fix some pre-existing issues in the driver and kunit tests reported
by Sashiko
- Fix handling of Arm hardware errata relating to the contiguous hint
when using SVA
- Rework the TLB invalidation logic in preparation for enabling
iommu-pt in future
- Minor cleanups in preparation for improving support for kdump
Apple DART:
- Support device-tree DMA aperture specifications
Broadcom:
- Add BCM2712 IOMMU support for Raspberry Pi 5 display and multimedia
devices, including the generic page-table format and shared TLB
cache management
Hyper-V:
- Add a para-virtualized guest IOMMU driver with guest-managed
stage-1 page tables and page-selective IOTLB invalidation
Intel VT-d:
- Enhanced IQE fault handling for batched multiple descriptors,
- Optimization of page-table level calculation in
compute_vasz_lg2_ss(),
- Fixes for several pre-existing issues reported by Sashiko,
- General cleanup and refinement
RISC-V:
- Report cache-coherency capability for coherent devices, enabling
VFIO/iommufd use
Samsung Exynos:
- Support SysMMUs without BLOCK mode, fixing their enable sequence
and TLB invalidation
- Improve v7 fault diagnostics with transaction information"
* tag 'iommu-updates-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (69 commits)
MAINTAINERS: Make Vasant Hegde AMD IOMMU maintainer
iommu/hyperv: Make hv_iommu_device static
iommu/hyperv: Add missing PCI dependency for the guest IOMMU driver
iommu/amd: Don't allocate kdump device table from DMA32
iommu/amd: Program device table when kdump reuse fails
iommu/dma: Clean up redundant MSI cookie check
iommu/dma: Catch scatterlist length overflows
iommu/hyperv: Add page-selective IOTLB flush support
iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
iommu/x86: Add architectural MSI reserved region helper
Drivers: hv: Add logical device ID registry for vPCI devices
hyperv: Introduce new hypercall interfaces used by Hyper-V guest IOMMU
iommu: Make iommu-dma helpers private
iommu/arm-smmu-v3: Don't rb_erase() a never-inserted stream node
iommu/arm-smmu-v3: Add Q_POS() macro
iommu/arm-smmu-v3: Add arm_smmu_attach_release()
iommu/arm-smmu-v3: Disable the impl before disabling the SMMU on shutdown
iommu/arm-smmu-v3: Populate the tlbi at the top of the call chain
iommu/arm-smmu-v3: Precompute the invalidation commands
iommu/arm-smmu-v3: Keep track in arm_smmu_invs if range invalidation is used
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "selftests/mm: improve khugepaged coverage" (Kiryl Shutsemau):
Give khugepaged a proper workout. Extend the tests to all supported
mTHP orders, check exactly which windows collapsed, and make scan
completion deterministic. Race collapse against faults, pinning, fork
and remap; verify that the contents survive.
Add coverage for whole-page-table zaps and memory pressure too.
- "selftests/mm: separate GUP microbenchmarking from functional testing"
(Sarthak Sharma):
Untangle GUP benchmarking from correctness testing. Move the
benchmark into tools/mm, add a standalone harness-based GUP selftest,
and move shared helpers into tools/lib/mm. Give each tool one job
instead of mixing timing measurements with correctness checks.
Cover the mapping, pinning and batch-size combinations explicitly.
- "mm: Switch device DAX to section-based vmemmap optimization" (Muchun
Song):
Apply section-based vmemmap optimization to device DAX. Rework the
backing metadata layout to save memory while preserving the handling
of device memory hotplug and its different alignment and lifetime
requirements.
- "mm: Introduce section-based vmemmap optimization for HugeTLB"
(Muchun Song):
Cut the memory consumed by HugeTLB's struct page array with
section-based vmemmap optimization. Arrange the metadata so large
huge pages need fewer backing pages, while keeping initialization,
teardown and the various hugepage configurations straight.
- "mm/huge_memory: clean up and decouple the anon and file split
helpers" (Kairui Song):
Separate anonymous and file-backed folio splitting, which have rather
different locking and bookkeeping requirements. Move the work into
separate helpers, drop dead checks and tidy swap-cache handling. Fix
error paths, including one that could leave a folio frozen.
Keep the swap cache cases separate from file-cache splitting.
- "mm: Unconditional per-VMA locks and cleanups" (Dave Hansen):
Make per-VMA locking unconditional and clean up the old conditional
code around it. This removes configuration-dependent plumbing and
lets callers depend on one locking model rather than carrying both
cases along.
- "memcg: remove the v1 soft limit" (Shakeel Butt):
Remove the old cgroup v1 memory soft-limit machinery. This has long
since been superseded by the newer memory-control interfaces; hauling
around a separate reclaim scheme for it no longer buys us much.
- "read proc/pid/smaps_rollup under per-vma lock" (Suren Baghdasaryan):
Read /proc/PID/smaps_rollup using per-VMA locks where possible,
rather than holding mmap_lock across the entire walk. Retain the
contention fallback and add tearing tests. This considerably reduces
latency when another thread is busy changing its mappings.
- "mm/damon: introduce data access-as-a-data attribute" (SJ Park):
Teach DAMON to expose memory access observations as data attributes,
making them available to the probe and filtering machinery. Extend
the interfaces, documentation and tests so the new information can be
used rather than merely collected.
- "Remove PG_private by using page/folio->private checks instead" (Zi
Yan):
Get rid of PG_private and use the folio's private pointer to say
whether private data is attached. Convert the filesystem users,
including erofs, f2fs and md, and clean up the old accessors and
flags. There are a few special cases, notably swapcache and hugetlb,
which need explicit care.
- "mm: make userland page table freeing RCU-safe" (Lorenzo Stoakes):
Make freeing userspace page tables safe against RCU readers. Sort out
the page-table lifetime and locking rules so walkers cannot stumble
over freed tables while mappings are being torn down.
- "make unused huge shrinker memcg aware" (Qi Zheng):
Make shmem's unused-huge-folio shrinker aware of memory cgroups, so
reclaim can find those folios under the right memcg. Wire up the
per-memcg tracking and its lifetime rules, and give the shrinklist
its own lockdep class to avoid spurious dependency reports.
- "mm: Drop pxd_ERROR()" (Anshuman Khandual):
Remove the old pxd_ERROR() page-table checks and their
architecture-specific baggage. Simplify the common page-table
interfaces and callers now that these checks no longer serve a
useful purpose.
- "memcg: group struct fields by access pattern" (Shakeel Butt):
Rearrange memcg's hot and cold fields according to how they're
actually accessed. Keep frequently updated counters and their
neighboring state from fighting over cachelines and reduce needless
cacheline traffic.
- "mm/damon/core: fix the size charged for a filter-trimmed region"
(Donggeun Yoo):
Fix DAMOS quota accounting when a filter trims a monitoring region.
Charge only the part left after filtering, not the original region,
and add KUnit coverage. Previously the excluded memory could eat into
the quota and make schemes run more slowly than requested.
- "mm/damon: add kunit and selftests for probes and probe weights" (SJ
Park):
Add more tests for DAMON probes and their weights, including
validation and the results reported to userspace. This is mostly
about catching regressions in the newer probe infrastructure before
they become harder to diagnose.
- "mm: memcontrol: constify the read side of the read side of the memcg
API" (Tal Zussman):
Mark the read-only parts of the memcg interface const, from folio and
lruvec accessors to counters and swap helpers. Most of this is
mechanical, but it makes the contracts clearer and lets the compiler
catch accidental writes.
- "mm/damon/vaddr: support {prep,apply}_probes" (SJ Park):
Support the new prepare/apply probe operations in DAMON's
virtual-address backend. This brings vaddr monitoring into line with
the probe infrastructure and makes the added probe types useful there
too.
- "mm/mglru: clean up folio counters and flag usage" (Kairui Song):
Simplify MGLRU's folio counters and flag handling. Remove redundant
accounting paths and make the state transitions easier to follow
without changing the intended reclaim policy.
- "arch, mm/execmem: resolve confusion about set_direct_map_valid_noflush()"
(Mike Rapoport (Microsoft)):
Clarify and straighten out the set_direct_map_valid_noflush()
interface across architectures and execmem. Make the requested
mapping changes and the callers' expectations agree, rather than
relying on subtly different architecture behavior.
- "mm: zswap: free cold writeback folios promptly" (Alexandre Ghiti):
Free zswap writeback folios as soon as their disk write completes.
They are cold temporary buffers, so putting them on the LRU only
makes reclaim rediscover them later. Extend swap-cache dropbehind and
let zswap keep these folios off the LRU altogether.
- "mm: gup: cleanup gup_fast call chain" (Aristeu Rozanski):
Clean up the GUP-fast call chain and simplify how the fast-path
helpers pass their arguments and results around. Keep the page-pin
behavior the same while making the call sequence easier to maintain.
- "mm: optimize zone-device memmap initialization" (Li Zhe):
Speed up initialization of zone-device struct pages. Avoid redundant
work when setting up large device-memory ranges, where touching every
descriptor can get expensive.
- "mm/zswap: shrink zswap_entry via a pool id" (Jianyue Wu):
Reduce the size of zswap_entry by storing a compact pool identifier
instead of a full pointer. Keep the pool lookup and lifetime handling
correct while saving per-entry metadata.
- "mm/damon: support access monitoring of hugetlb-backed memory"
(Krishna Iyer):
Let DAMON monitor hugetlb-backed memory too. Extend the relevant
access checks and add coverage so those mappings no longer fall
through a hole in the monitoring machinery.
- "mm/execmem: fixes and cleanups for the ROX cache" (Mike Rapoport):
Tidy execmem's read-only-executable cache and fix its handling of the
awkward allocation and release cases. The aim is to make the cache's
ownership and permission transitions more predictable.
- "zsmallc: remove old object read API" (Sergey Senozhatsky):
Drop zsmalloc's old object-read API and move its remaining users to
the supported access mechanism. This removes a duplicate interface
which we no longer need.
- "mm/mempolicy: stop copying state in the interleave paths" (Gregory
Price):
Stop copying mempolicy state in the interleave paths when a reference
to the existing policy will do. This avoids extra work and makes the
ownership rules less obscure.
- "mm/mglru: speed up inc_min_seq() and fix cold/hot inversions" (Barry
Song):
Make MGLRU's generation advancement cheaper and fix cases where cold
and hot folios end up in the wrong order. Adjust the counter and list
handling so reclaim doesn't keep passing over the better eviction
candidates.
- "mm: Fix MF_DELAYED handling on memory failure" (Lisa Wang):
Treat MF_DELAYED as a partially completed memory-failure operation,
not an outright failure. Propagate that result correctly through
shmem and the generic handler, fix the extra-reference accounting,
and add tests for the resulting SIGBUS behavior.
- "tools/mm/page_owner_sort: fix --sort, add module filter, improve
usage" (Ye Liu):
Fix page_owner_sort's --sort handling, add module-based filtering and
make the usage output more helpful. This makes the tool less
frustrating when tracking down who is holding on to pages.
- "mm/damon: move damos filter range arguments validation to core" (SJ
Park):
Move DAMOS filter range validation into the core, where all callers
can share it. Also close the sysfs read-twice races which could pass
inconsistent ranges, and add tests for invalid input.
- "mm/damon: misc cleanups" (Zenghui Yu):
Clean up a collection of small DAMON rough edges in the core,
interfaces and tests. No large behavior change here, just simpler
code and fewer opportunities for confusion.
- "mm/damon: cleanup code, add test cases, and update guidances in
docs" (SJ Park):
Clean up DAMON's core and interfaces, add missing test cases and
bring the documentation into line with the code. These changes should
make the newer facilities easier to understand and maintain.
- "mm/damon: introduce hugepage_size probe filter" (SJ Park):
Add a DAMON probe filter for hugepage size. Let users select a range
of folio sizes through sysfs, validate the range and document the new
interface, so monitoring can concentrate on memory backed by the
desired hugepage sizes.
- "selftests/mm: pagemap_ioctl test fixes and cleanups" (Zenghui Yu):
Fix some pagemap ioctl test assumptions and clean up their setup and
reporting. Make failures point to the operation that went wrong
rather than to test harness bookkeeping.
- "mm: avoid large folio splits when swap is unavailable" (Johannes
Weiner):
Avoid splitting large folios merely to attempt swap when no swap
space is available. There is little point paying for an expensive
split when reclaim cannot actually swap the resulting pages out.
- "mm: workingset: fix the shadow node budget under MGLRU" (Hui Zhu):
Fix the workingset shadow-node budget with MGLRU enabled. Keep the
shadow entries within the intended limits so refault tracking does
not quietly consume more metadata than it should.
- "selftests/mm: TAP output and global-state fixes" (Song Hu):
Fix selftests which produce misleading TAP output or fail to restore
global settings after a run. A test ought to leave the system as it
found it, particularly when a whole suite follows behind.
- "mm: remove page_swap_entry()" (Tal Zussman):
Remove page_swap_entry() and convert its remaining users to the folio
and swap-entry helpers. Lose an old page-level interface and make the
swap paths a little more consistent.
- "mm: refactor zonelist constructors and iterators" (Gregory Price):
Refactor the zonelist construction and walk helpers to reduce
duplicated logic. Keep the allocation ordering rules intact while
making it clearer how zones are selected.
- "mm: kmemleak: batch the struct page scan" (Breno Leitao):
Scan adjacent struct pages in batches instead of taking kmemleak_lock
once for every single page. This preserves scan coverage and the
lock-hold bound, while cutting overhead substantially on debug
kernels.
- "mm/damon: misc improvements in tests and documents" (Zenghui Yu):
Fix some DAMON selftests which leave kdamond running or fail under
Python safe-path mode, and improve the KUnit coverage and
documentation. Nothing especially glamorous, but these are worth
doing.
- "mm/damon: introduce probe_hits_wsum DAMOS core filter" (SJ Park):
Add a DAMOS core filter using weighted probe-hit counts. This gives
schemes another way to select regions based on what the monitoring
probes observed.
- "mm/mglru: fix ineffective memory protection for non-kswapd reclaim"
(Ridong Chen):
Fix MGLRU's memory protection handling for reclaim outside kswapd.
The protection settings weren't having the intended effect in these
paths, leaving protected memory more exposed than requested.
- "mm/damon: improve readability, clarity and test coverage" (SJ Park):
Simplify a handful of DAMON core helpers, clarify their behavior and
expand test coverage. There are no intended userspace-visible changes
in this batch.
- "mm: replace PF_KCOMPACTD/PF_KSWAPD with kthread_func()" (Kefeng
Wang):
Stop identifying reclaim and compaction workers through the PF_KSWAPD
and PF_KCOMPACTD task flags. Use their kthread functions instead and
remove the redundant flag plumbing.
- "mm/hugetlb: fix surplus accounting and availability checks during
demotion" (Longlong Xia):
Fix HugeTLB surplus accounting and availability checks when demoting
huge pages. Keep the counters and reservation decisions consistent as
one huge page turns into several smaller ones.
- "mm/damon: add kunit tests for probe_hits handling and probe params
validation" (Jason Angelov):
Add KUnit tests for DAMON probe-hit handling and invalid probe
parameters. These cover edge cases that were too easy to miss in
ordinary monitoring tests.
- "mm/damon: fix misc bugs in kunit, quota goals and sysfs refresh_ms"
(SJ Park):
Fix a few DAMON bugs in KUnit tests, quota-goal handling and the
sysfs refresh interval. Small fixes, but the incorrect results and
control behavior were real.
- "mm: zswap: optimize zswap invalidate and store" (Kefeng Wang):
Simplify zswap's invalidate and store paths to avoid avoidable
lookups and work. Keep the entry lifetime rules intact while making
those frequent operations cheaper.
- "mm: replace custom ratelimiting logic" (Pedro Falcato):
Replace hand-rolled MM rate limiting with the common kernel helpers.
There is no need to maintain another local version of the same
mechanism.
- "mm/vmalloc: minor cleanups" (Ye Liu):
Tidy some vmalloc initialization and reporting code, and pull
duplicated vmap-area insertion work into a helper. No functional
changes are intended.
- "mm/mglru: clean up isolate_folios for readability and clarity"
(Ridong Chen):
Clean up MGLRU's isolate_folios() so the decisions are easier to read
and verify. Keep reclaim behavior unchanged while removing
unnecessary twists in the control flow.
- "Catch automatic storage in IDA and Maple Tree definitions" (Yury
Norov):
Catch IDA and maple-tree definitions placed in automatic storage
where the lifetime rules are wrong or easy to get wrong. Add checks
so such mistakes are harder to slip through unnoticed.
- "mm, swap: some random fixes and cleanups" (Kemeng Shi):
Fix and simplify a few unrelated swap paths, removing redundant work
and tidying up error handling. A small collection of things which
were better fixed than left lying around.
- "mm/page_io: folio conversion cleanups" (Tal Zussman):
Finish some page-to-folio conversions in swap I/O, removing obsolete
wrappers and using folio operations consistently. The I/O behavior is
intended to remain the same.
- "mm/swap: skip empty clusters in the swapoff scan" (Youngjun Park):
Skip empty swap clusters during swapoff instead of walking slots
which have nothing to release. This avoids pointless work on sparsely
used swap devices.
- "mm: trace: decode architecture-specific VMA flags" (Meijing Zhao):
Teach the VMA trace output to decode architecture-specific flags,
rather than leaving them as unexplained bits. That should make
tracing a good deal more useful when debugging unusual mappings.
- "mm, swap: don't spin on a bad swap entry" (Breno Leitao):
Stop repeatedly retrying a swap entry which is already known to be
bad. Make the error path terminate cleanly instead of wasting CPU
chasing an entry that cannot be used.
- "mm/page_isolation: fix UBSAN shift-out-of-bounds in
isolate_single_pageblock" (Qi Xi):
Fix an out-of-range shift in isolate_single_pageblock() and tighten
its associated boundary handling. UBSAN found the issue; the result
should be more robust pageblock isolation.
- "mm: khugepaged: fix tracepoint UAF" (Vernon Yang):
Fix a use-after-free in khugepaged tracepoint handling. Make sure the
information recorded by tracing stays valid for as long as the trace
event needs it.
- "mm/damon: fix DAMOS bugs in core, paddr and vaddr" (SJ Park):
Fix several DAMOS problems across the core and physical- and
virtual-address backends. The changes close error cases and bring the
implementations back into agreement.
- "mm/hugetlb_cgroup: move the per-node usage along with the folio"
(Hongfu Li):
Move HugeTLB per-node usage accounting when folios migrate between
nodes or are reparented to another cgroup. Otherwise numa_stat can
retain stale charges and even underflow when the folio is freed.
- "docs/core-api: memory-allocation: add k[mz]alloc_obj() and clarify
kmalloc" (Mike Rapoport):
Document the typed k[mz]alloc_obj() allocation helpers and clear up
some kmalloc guidance. Make it easier for callers to choose the right
interface.
- "selftests/mm: Validate selections and scope memfd_secret setup"
(Tianyi Chen):
Check selftest selections before running and confine memfd_secret
setup to the cases that actually need it. Avoid confusing failures
caused by the test harness itself.
- "mm/damon: move zero damos quota target_value handling to the core
layer" (SJ Park):
Handle a zero DAMOS quota goal target in the core rather than making
each user of the interface invent its own rule. Keep quota decisions
consistent across callers.
- "mm/damon: Introduce a huge page collapsing mechanism using auto
tuning" (Asier Gutierrez):
Add an auto-tuned DAMON mechanism for collapsing huge pages. Use
monitoring feedback to decide when collapse is worthwhile rather than
forcing one fixed policy onto every workload.
- "kmemleak: fix stale documentation and raise the verbose default"
(Breno Leitao):
Bring the kmemleak documentation up to date and require a third
confirming scan before verbose kernels print a suspected leak. The
extra scan helps suppress transient false positives in noisy debug
builds.
- "mm/memory: improve insert_pages() error handling" (Avi Weiss):
Tighten insert_pages() error handling so partial failures are
reported and cleaned up consistently. The caller should not have to
guess how far the operation got.
- "mm/damon: allow NULL or unstarted damon_ctx parameter for
damon_call()" (SJ Park):
Make damon_call() handle NULL and not-yet-started contexts safely.
Simplify the rules for callers and avoid an indefinite wait on an
invalid state.
- "mm/damon: introduce pgidle_set probe filter type" (SJ Park):
Add a pgidle_set DAMON probe filter, giving monitoring users another
way to select pages by their idle-tracking state. Wire it through the
filter interfaces and tests.
- "mm/damon/core: remove unused helper functions" (Cheng-Han Wu):
Remove DAMON core helpers which no longer have callers. Keep the API
surface smaller rather than retaining dead code just in case.
- "mm: stop calling pmd_folio() on special PMDs" (Gregory Price):
Avoid calling pmd_folio() on special PMD mappings that have no struct
page. The old assumption could fault in procfs walkers; use the
normal-folio checks and handle those mappings properly.
- "mm: remove three unused helpers from mm.h" (Tal Zussman):
Remove three unused helpers from mm.h. Fewer obsolete interfaces for
the next person to stumble over.
- "mm/damon: improvements in efficiency, error handling, documents"
(Liew Rui Yan):
Skip needless DAMOS quota work once the quota is full, propagate a
missing sysfs error and tidy a couple of comments. The ignored error
could make a monitoring-start request appear successful when it
wasn't.
- "docs/mm/damon/design: add explanation of nr_snapshots" (Liew Rui
Yan):
Explain DAMON's nr_snapshots accounting in the design documentation
and straighten out the associated terminology. Make it clearer what
users should expect from that counter.
- "selftests/cgroup: fixes for test_zswap on single core VM" (Wilson
Felipe Pereira):
Fix two test_zswap failures on single-CPU VMs. Wait for the exiting
child's cgroup to become unpopulated before reconfiguring it, and
avoid another test assumption which breaks under constrained
scheduling.
- "docs/ksm: fix advisor documentation and comment" (Jinjiang Tu):
Correct the KSM advisor documentation and a misleading code comment.
Keep the description aligned with how the advisor actually works.
- "Fix bugs in HugeTLB allocation when mem_cgroup_charge_hugetlb()
fails" (Ackerley Tng):
Fix HugeTLB allocation cleanup when the memcg charge fails. Make sure
failure exits undo what was allocated rather than leaving stale
accounting or resources behind.
- "mm, memcg: fix memory.peak reset clobbering other fds' watermark"
(Ridong Chen):
Fix memory.peak reset handling so resetting one file descriptor
doesn't overwrite the watermark kept for another. Keep those per-open
measurements independent as intended.
- "mm: reject zone device folios in more folio walkers" (Gregory
Price):
Reject zone-device folios in page walkers that cannot safely handle
them. Extend the existing checks rather than assuming every folio has
ordinary system-memory backing.
- "percpu: remove code with no effect" (Sang-Heon Jeon):
Remove a few pieces of percpu code which no longer do anything. There
is no reason to keep maintaining dead paths.
* tag 'mm-stable-2026-10-19-21-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (539 commits)
mm: shmem: assign a lock class to the unused huge shrinklist
mm: vmscan: put rotation-missed folios at the LRU tail
mm: kmemleak: scan the struct page array in MAX_SCAN_SIZE batches
mm: kmemleak: move the struct page scan into a helper
mm/damon: document that a zero sample_interval is accepted
mm/damon: fix typos in comments
mm/damon/sysfs: propagate damon_call() error in turn_damon_on
mm/damon/core: skip quota score setup when the quota is full
mm/damon/tests/core-kunit: test the size charged for a filter-trimmed region
mm/damon/core: charge only the part of a region the filter left
mm: disallow raw PFN mappings of huge/shared zeropage
selftests/mm: zap whole PTE tables in the khugepaged race harness
selftests/mm: add memory-pressure threads to the khugepaged race harness
selftests/mm: race the collapse of windows with holes
selftests/mm: add khugepaged race harness
selftests/mm: check that one khugepaged pass collapses one window
selftests/mm: run every supported collapse order by default
selftests/mm: cover a shared-source collapse write race
selftests/mm: parameterize the mixed-source collapse case by source order
selftests/mm: add order-parameterized khugepaged collapse cases
...
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- powerpc/numa: Support coregroup on PowerNV
- powerpc/irq: Move __softirq_pending out of irq_stat
- powerpc/512x: Remove pdm360ng platform setup in favor of mpc512x_generic
- powerpc/ps3: Simplify control flow in ps3_{virq,irq_plug}_setup()
- KVM: PPC: Book3S HV: Add preempt_disable() around virtual-mode HPTE bit-lock users
- powerpc/syscall: Avoid atomic test_and_clear_thread_flag on fast path
- pseries/plpks cleanup and fixes
- Misc fixes and cleanup
Thanks to Abhishek Dubey, Amit Machhiwal, Anushree Mathur, Bui Nguyen
Nhu Quynh, Christophe Leroy (CS GROUP), Dmitry Torokhov, Gaurav Batra,
Gautam Menghani, Geert Uytterhoeven, Greg Joyce, Hari Bathini, Harsh
Prateek Bora, Karl Mehltretter, Link Mauve, Michal Suchánek, Mukesh
Kumar Chaurasiya (IBM), Nayna Jain, Ritesh Harjani (IBM), R Nageswara
Sastry, Saket Kumar Bhaskar, Samir Mulani, Shivang Upadhyay, Shrikanth
Hegde, Sourabh Jain, Srikar Dronamraju, Srish Srinivasan, Thorsten Blum,
Vaibhav Jain (IBM), Venkat Rao Bagalkote, and Yeswanth Krishna Tellakula
* tag 'powerpc-7.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (44 commits)
powerpc/numa: Support coregroup on PowerNV
powerpc/numa: Allow cpu_to_coregroup_id without PPC_SPLPAR
powerpc/numa: Simplify find_primary_domain_index
powerpc/fadump: collect dump when CPU_STATE_DATA is less than reserved
powerpc/syscall: Avoid atomic test_and_clear_thread_flag on fast path
powerpc/kasan: fix r2 corruption in mem*() on GENERIC_ENTRY with old compilers
powerpc: fix NMI exit ordering: restore soft masks after irqentry_nmi_exit()
powerpc/pseries/iommu: Add TCEs for 16GB pages when RAM is pre-mapped
KVM: PPC: Book3S HV: Free the queue pages in error path
KVM: PPC: Book3S HV: Add missing mappings for tracing exits
powerpc/interrupt: Use early_radix_enabled() in NMI real-mode guard
KVM: PPC: Fix get_d_signext() 12-bit displacement for paired-single D-form
KVM: PPC: Book3S HV: Add preempt_disable() around virtual-mode HPTE bit-lock users
KVM: PPC: Book3S HV: Add SRCU protection for virtual-mode HPT hcalls
pseries/plpks: update PKS documentation and MAINTAINERS entry
pseries/plpks: rename the default wrapping key macro
pseries/plpks: make narrowing conversions explicit
pseries/plpks: hide wrapping_features when unsupported
pseries/plpks: fix self-reference in plpks_var initializer
pseries/plpks: clear SED key data after use
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq chip driver updates from Thomas Gleixner:
"Updates for interrupt chip drivers:
- Remove the futile attempts to cleanup resources when the probing of
the main interrupt chip fails for SiFIVE/PLIC devices. If that
probe fails the system will stall immediately afterwards in the
boot process without reaching a state where the error could be
diagnosed. The lack of resource cleanup led to a frenzy of AI
detected/assisted "fixes" which just make the code pretend to be
correct for no value.
Remove the existing half baked cleanup and immediately panic the
machine when the probe fails. That's far more useful than letting
it proceed and stall out a millisecond later with no information
about the root cause.
- A series of fixes for the ARM GIC-V3 driver addressing a potential
double free, a bitmask overrun on 32-bit ARM and a OF node leak.
- Automatically set the IRQ_DOMAIN_FLAG_DESTROY_GC when a interrupt
domain is created that also allocates the generic interrupt chip
during domain creation. That removes the requirement for manually
setting the flag in the domain creation info structure when it
contains a valid entry for allocating the generic interrupt chip.
Remove the therefore redundant setters of
IRQ_DOMAIN_FLAG_DESTROY_GC in the existing drivers.
- Add support for Annapurna Labs FIC version 2 and 3 and implement
affinity control for the demultiplexed interrupts by utilizing the
recently merged interrupt redirection infrastructure.
- Convert the ACPI device ID structures to named initializers
- Consolidate the IPI related constants for RISC-V interrupt
controllers
- Add support for Qualcomm Purwa SoC interrupt chip and consolidate
the workaround for the previous version in Hamoa SoCs.
- The usual small fixes and improvements all over the place"
* tag 'irq-drivers-2026-10-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (61 commits)
irqchip/al-fic: Support per-child affinity via interrupt redirection
irqchip/al-fic: Add support for FIC v3
irqchip/al-fic: Support error and fatal outputs and FIC v2
dt-bindings: interrupt-controller: amazon,al-fic: Add mask selection
irqchip/al-fic: Switch to shared parent interrupt
irqchip/al-fic: Keep the device_node instead of a cached name string
irqchip/al-fic: Use %pOF and raise init log level
irqchip/al-fic: Use %pe to print init error
irqchip/al-fic: Fix coding style issues
irqchip: Use named initializers for acpi_device_id
irqchip/gic-v5: Fix standalone IRSes OF probe
dt-bindings: interrupt-controller: gicv5: Relax IRS properties constraints
irqchip/renesas-rzv2h: Preserve TIEN state in rzv2h_tint_set_type()
irqchip/loongson-eiointc: Use pa_to_nid() rather than hard-code
irqchip/riscv-imsic: Expose the fwnode via the global config
irqchip/meson-gpio: Allow the GPIO interrupts to wake the system
irqchip/gic-v3: Ensure change to DS is visible
irqchip/mips-gic: Transfer interrupt mask state across clusters
irqchip/mips-gic: Fix recursive acquisition of gic_lock in gic_set_affinity()
irqchip/mips-gic: Fix unbalanced cm_core_lock in for_each_online_cpu_gic()
...
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Pull documentation updates from Jonathan Corbet:
"It was a reasonably busy cycle for docs; changes include:
- Add the AGENTS.md symbolic link into the top-level directory in the
hopes that LLMs will read it and produce better work
- The removal of the Assisted-by requirement, as concluded at the
Maintainer Summit
- A new "testdocs" make target to run the documentation unit tests
- Lots of work on the Portuguese, and Chinese translations; there is
now maintenance for the traditional Chinese translations as well
...and the usual pile of minor fixes, documentation updates, etc"
* tag 'docs-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (125 commits)
docs: add AGENTS.md as a symlink to README
docs: kernel-parameters: adjust reserve_mem build option
docs: kernel-parameters: don't mix cmdline options & build options
docs/ja_JP: translate submitting-patches.rst (review and report tags)
docs: remove Assisted-by references
Revert "docs: landlock: fix ENOMSG condition in create_ruleset kernel-doc"
docs: kdoc: parse context_lock_struct() as struct declaration
docs: timers: hpet: Document userspace API and ioctl commands
docs: timers: hpet: Modernize file references
Documentation: sched-preemption: Add a SPDX license identifier
docs: ABI: sysfs-driver-xdata: use literal blocks for console commands
docs: ABI: sysfs-class-firmware-attributes: use literal blocks for console commands
ABI: sysfs-bus-usb: use literal block for console commands
docs/ABI: testing: aspeed-uart-routing: use literal block for console commands
docs: kernel-parameters: fix a truncated sentence for preempt=lazy
sched/doc: add a preemption model overview
docs: ABI: TMR manager: use literal blocks for console I/O
Documentation/ABI: IFS: use literal blocks for commands
ABI: sysfs-bus-pci: use literal blocks for commands
docs: translations: pt_BR: add debugging index
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 TDX updates from Dave Hansen:
"There are two high-level things going on here.
First, TDX host systems currently consume ~0.4% of physical memory for
their own memory metadata. This is all-or-nothing; you either pay the
0.4% or can not use TDX. A new TDX module feature (Dynamic PAMT)
allows this metadata to be allocated for 2MB of host memory at a time.
This, of course, saves precious DRAM when TDX utilization is low on a
host.
Second, the TDX ABI has fixed-size "quotes" that are passed around
during attestation operations. These 128k buffers are far too small
for post-quantum cryptography where the quotes grow substantially. The
TDX module now has the ability to enumerate the sizes of the quote
buffers. Plumb the new size enumeration into the kernel"
* tag 'x86_tdx_for_7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
virt: tdx-guest: Make the Quote buffer size dynamic
x86/tdx: Add a helper to query maximum Quote size
virt: tdx-guest: Add a helper for the Quote buffer size
virt: tdx-guest: Calculate the Quote buffer size safely
virt: tdx-guest: Give the Quote buffer an explicit type
x86/tdx: Take the Quote buffer as a generic pointer
x86/tdx: Restrict attestation exports to the tdx-guest driver
virt: tdx-guest: Remove unused and confusing function argument
x86/virt/tdx: Formalize SEAMCALL leaf version encoding support
Documentation/x86: Add documentation for TDX's Dynamic PAMT
x86/virt/tdx: Enable Dynamic PAMT
KVM/TDX: Get/put PAMT pages when (un)mapping private memory
x86/virt/tdx: Add APIs to support Dynamic PAMT ops from KVM's fault path
KVM/TDX: Allocate PAMT memory for TD and vCPU control structures
x86/virt/tdx: Handle multiple callers in tdx_pamt_get/put()
x86/virt/tdx: Allocate refcounts for Dynamic PAMT memory
x86/virt/tdx: Add __tdx_pamt_get/put() helpers
x86/virt/tdx: Allocate page bitmap for Dynamic PAMT
x86/virt/tdx: Simplify PAMT layout calculation
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FPU state updates from Borislav Petkov:
- Document and cleanup the signal frame handling with the goal to allow
process migration between CPUs with different FPU capabilities but
which use only a common set of FPU features, i.e., think
checkpoint/restore (Andrei Vagin)
- Consolidate how XSTATE features are checked by doing them once during
boot with the intent of removing cpu_has_xfeatures(). Latter will
happen in the next cycle (Eric Biggers)
- Other cleanups
* tag 'x86_fpu_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Remove additional remnants of math emulation
x86/fpu: Remove unnecessary checks for X86_FEATURE_FPU
selftests/x86: Add tests for signal frame FPU portability
x86/fpu: Pre-fault only required size of xstate buffer
x86/fpu: Fix potential underflow in xstate_calculate_size()
x86/fpu: Document reasoning of FX-only fallback
x86/fpu: Extract restore_from_ia32_fxstate() and clean up fpu__restore_sig()
x86/fpu: Clean up and rename variables in signal frame handling
x86/fpu: Document signal frame layout and portability
xor: Add AVX-512 optimized xor_gen()
xor: Remove redundant X86_FEATURE_OSXSAVE check
lib/crc: x86: Stop using cpu_has_xfeatures()
lib/crypto: x86: Stop using cpu_has_xfeatures()
crypto: x86 - Stop using cpu_has_xfeatures()
um: Check for missing AVX and AVX-512 xstate bits
x86/fpu: Check for missing AVX and AVX-512 xstate bits
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Here are the arm64 updates for 7.4.
The more interesting bits are the removal of big-endian kernel support
(already marked BROKEN for some time), preemptible this_cpu_*()
operations and MPAM support for the firmware-backed (Fb) interface.
CCA (Arm's confidential compute) is slowly trickling in with host RMI
(Realm Management Interface) support and some refactoring, including a
dedicated SMCCC bus to advertise firmware services. There are also the
usual PMU updates for new hardware and a few fixes/cleanups.
Core features:
- Remove big-endian kernel support: CONFIG_CPU_BIG_ENDIAN has
depended on BROKEN for a while, so drop the remaining code (BE
hypervisor object, BPF JIT, assembly/crypto/library routines,
endianness helper macros, selftests) and force a little-endian
build
- Add preemptible this_cpu_*() operations (read/write, RMW, xchg,
cmpxchg and cmpxchg128) that no longer need to disable preemption
around the per-CPU address generation and access
- Preparation patches for implementing CONFIG_HOTPLUG_PARALLEL on
arm64
Memory management:
- Treat faults taken by EFI runtime firmware as kernel faults
- Clear PTE_WRITE for EFI_MEMORY_RO mappings (with hardware dirty
state management enabled, this is not truly read-only)
- Raise the default ARCH_MMAP_RND_BITS for 48-bit and 52-bit VA
configurations (28/26/24 bits for 4K/16K/64K pages)
- Implement clear_page[s]() using memset()
- Enable BBML2 no-abort (a.k.a. BBML3) for the NVIDIA Rigel CPU
Perf and PMU:
- Support for HiSilicon's ITS PMU
- Add support for some new events: INST_SIMD_ALU_VEC for Apple PMUs
and a cycle counter for the latest version of HiSilicon's MN PMU
hardware
- A bunch of fixes to the CXL PMU driver to address pre-existing
issues from Sashiko
- Fix generation of PERF_RECORD_ITRACE_START records for SPE and ETM
drivers
- Reduce excessive stack consumption in the Marvell DDR PMU driver
- Minor driver updates and cleanups all over
Arm Confidential Compute Architecture (CCA):
- Add an Arm SMCCC bus for firmware services discovered through SMCCC
and move the TRNG and CCA guest (TSM provider) drivers onto it,
removing the dummy CCA platform device and adding a sysfs ABI for
Realm guests
- Move the Realm Service Interface (RSI) code out of arch/arm64/ into
drivers/firmware/arm_rmm/
- Add the host side of the Realm Management Interface (RMI): detect,
configure and activate the RMM, add SRO support and wrappers for
the Realm RMI commands
- Block hibernation (new arch hook in the PM core) and kexec while
the RMM is active. To be revisited in the future with proper
support for deactivation
- Handle Granule Protection Faults (GPFs) taken by the host, caused
by accesses to memory delegated to the RMM. In a future patch, the
exception table lookup will be limited to is_kdump_kernel() cases
MPAM (Memory Partitioning And Monitoring):
- Add support for the MPAM firmware-backed (Fb) interface, allowing
MSC accesses to be mediated by firmware
- Fix a list of theoretical issues with the driver (MSC access error
propagation, MBWU monitor save/restore and locking, resctrl class
handling, error interrupt restore, maximum number of PARTIDs)
- Add the mailing list and a missing file to the MAINTAINERS entry
- Document when to set arm64.nompam
Errata and CPU features:
- Add the NXP i.MX8QM/8QP workaround for the Cortex-A53 cache
coherency issue (ERR050104), using a new ARM64_CPUCAP_SOC_ERRATUM
capability type for SoC-level errata
Miscellaneous:
- Mask debug exceptions (DAIF) around the hardware breakpoint
register manipulations when called from generic kernel code
- Don't zero the SVE state buffer when the SVE state is live
- Return -EPERM instead of -EBUSY from the GCS prctl() locking
failures (matching x86), with the selftest updated. Slight ABI
change but no software deployment yet
- kselftest: fix unsound MTE fault skipping by introducing MTE-safe
memory accessors, avoid copying each signal test binary more than
once
- Update sysreg definitions (fix three enum values and two field
names, mark architecturally dropped fields as RES0) and remove the
TME transaction state check from the BRBE driver
- Fix the description of ARM64_HAS_LPA2 and remove a redundant
ID_AA64MMFR0 define"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (144 commits)
arm64: cpufeature: Enable BBML2 for NVIDIA Rigel
arm64: cputype: Add NVIDIA Rigel definitions
arm64: raise default ARCH_MMAP_RND_BITS for 48-bit and 52-bit VA
arm64/debug: mask debug exceptions when called from common code
kselftest/arm64: signal: copy each test binary only once
kselftest/arm64: Check for -EPERM not -EBUSY in the locking test
arm64: gcs: Return -EPERM not -EBUSY for prctl() locking failures
perf: arm_brbe: Remove the check for TME transaction states
arm64: sysreg: Mark fields the architecture dropped as RES0
arm64: sysreg: Fix the names of two misspelt fields
arm64: sysreg: Fix three incorrect enum values
arm64: smp: Defer RCU registration during secondary CPU bringup
arm64: smp: Don't bother printing the I-cache policy for each CPU
arm64: smp: Defer update of secondary CPU capabilities
arm64: smp: Tidy up cpuinfo init and cpufeature updates
arm64: smp: Tidy up smp_prepare_cpus()
arm64: cpufeature: Store every ID register with its overrides applied
arm64: cpufeature: Read MPAMIDR_EL1 in __cpuinfo_store_cpu()
arm64: cpufeature: Add read_cpuid_with_overrides()
arm64: cpufeature: Check arm64_ftr_regs[] before the first store
...
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'hyper-v', 'samsung/exynos', 'riscv', 'broadcom', 'intel/vt-d', 'amd/amd-vi' and 'core' into next
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Add struct hsmp_telemetry_table_rm to the UAPI header, describing the
Ryzen Master SMC telemetry table (table version 5, as reported by
HSMP_CLIENT_GET_METRICS_TABLE_VER) returned by
HSMP_CLIENT_GET_METRICS_TABLE on the Family 1Ah client models, now
that the previous commit wires that message up to a usable DRAM
mapping.
Point amd_hsmp.rst at struct hsmp_telemetry_table_rm instead of
duplicating the layout in prose. The Public PPR for the model in use
remains the reference for units and encodings.
Signed-off-by: Muralidhara M K <muralidhara.mk@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20261012085407.1202295-5-muralidhara.mk@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Add HSMP client support for the Family 1Ah client platforms, Models
80h-8Fh and E0h-E3h, recognized by the previous commit via
is_client_platform(). These parts speak the Ryzen Master SMC (RMSMC)
message set instead of the server HSMP messages, and probe via ACPI
_CRS/_DSD like a server socket.
Add the client message set to the UAPI header. Introduce struct
hsmp_plat_desc to select the test message and protocol-version
message at runtime, based on is_client_platform() rather than a
fixed set of family/model ranges.
The client set has no per-message descriptor table. validate_message()
and hsmp_ioctl_msg() therefore skip msg_id range validation and the
/dev/hsmp GET/SET fd-mode gate for client messages, leaving msg_id
validity to firmware's response status; validate_message() still
bounds client num_args and response_sz to HSMP_CLIENT_MAX_MSG_LEN.
Server platforms keep every check, and get_msg_desc() now also
enforces a lower msg_id bound there. get_msg_desc() sanitizes msg_id
with array_index_nospec() against its own num_msgs bound before
indexing the descriptor table, rather than depending on a caller-side
clamp. Add hsmp_msg_response_sz(), returning the descriptor table
entry on server and the client protocol max otherwise, used by
hsmp_cache_proto_ver() since firmware returns only args[0] for
client. validate_message() and hsmp_ioctl_msg() distinguish the two
sets via the already-resolved hsmp_plat_desc/hsmp_msg_desc pointers,
not a second is_client_platform() call.
The /dev/hsmp 0600 restriction and every sysfs/hwmon attribute hidden
on client platforms stay from the previous commit: hsmp_ioctl_msg()
still has no GET/SET gate for client messages, so an unprivileged
opener could otherwise issue destructive SET messages, and the
hidden attributes still resolve against unrelated client commands.
Lifting either restriction is deferred to the commits that make the
corresponding client functionality safe to expose.
Document the client models in amd_hsmp.rst.
Signed-off-by: Muralidhara M K <muralidhara.mk@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20261012085407.1202295-3-muralidhara.mk@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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'for-next/preemptible-this-cpu', 'for-next/cpu-errata', 'for-next/mpam', 'for-next/kselftest', 'for-next/efi', 'for-next/secondary-boot-prep', 'for-next/sysreg' and 'for-next/gcs', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf: (22 commits)
drivers/perf: apple_m1: Add macOS 27 M2 Event
perf/marvell: cn10k_tad: Publish the OF module alias
perf: xgene: initialize lock before requesting IRQ
perf: marvell: avoid large stack variables
perf/dwc_pcie: Fix PCI device reference leak in probe
coresight: perf: Suppress ITRACE start records
perf: arm_spe: Suppress redundant ITRACE start records
perf/core: Export perf_event_itrace_started()
perf/cxl: Clear stale overflow status before using a counter
perf/cxl: Don't log through pmu.dev in the overflow interrupt handler
perf/cxl: Validate the hardware-reported counter width
perf/cxl: Unfreeze counters after handling an overflow interrupt
perf/cxl: Don't share the overflow interrupt, and keep it pinned
cxl/pci: Add the PMUs after configuring events
perf/cxl: Split the MSI vector out of info->irq
perf/cxl: Accept an overflow interrupt on MSI message number 0
perf/cxl: Fix the counter overflow delta fixup
perf/cxl: Clear stale event fields before reprogramming a counter
perf/cxl: Program the requested event group on configurable counters
drivers/perf: hisi: Add cycle event for new MN PMU
...
* for-next/misc:
arm64: cpufeature: Enable BBML2 for NVIDIA Rigel
arm64: cputype: Add NVIDIA Rigel definitions
arm64: raise default ARCH_MMAP_RND_BITS for 48-bit and 52-bit VA
arm64/debug: mask debug exceptions when called from common code
arm64: clear_page[s] using memset
arm64/sve: Don't zero the SVE state buffer when the SVE state is live
arm64/cpufeature: Drop redundant define(ID_AA64MMFR0..._SUPPORTED_LPA2)
arm64: Use proper include variant
arm64: include: fix repeated word 'to' in comment
selftests: arm64: fix typo "hander" in comment
arm64: fix typos in comments
docs: arm64: Fix typo "initalised" in booting.rst
arm64: alternative: Remove 'cfg' parameter
arm64: mte-kasan: Use IS_ENABLED() rather than ALTERNATIVE() 'cfg' parameter
arm64/cpufeature: Change description for ARM64_HAS_LPA2
* for-next/be-gone:
drivers: Kconfig: Simplify dependencies on ARM64 && !CPU_BIG_ENDIAN
arm64: Kbuild: Remove vestigial big-endian support
gve: Add explicit ARM64 dependency to Kconfig
crypto: hisilicon/sec2: Remove check of CONFIG_CPU_LITTLE_ENDIAN
arm64: Remove all usage of __AARCH64EB__
arm64: Remove all usage of CONFIG_CPU_BIG_ENDIAN
KVM: arm64: Remove support for a big-endian hypervisor object
arm64: vdso32: Always build compat vDSO object as little-endian
arm64: assembler: Remove endianness helper macros
arm64: lib: Assume a little-endian kernel in optimised string routines
arm64: lib: Assume a little-endian kernel in custom library routines
arm64: crypto: Assume a little-endian kernel
arm64: bpf: Remove big-endian support from the JIT compiler
selftests/arm64: Remove big-endian support
* for-next/smccc-bus:
: Switch Arm SMCCC firmware services to an SMCCC bus
arm64: rsi: Correct type of realm_config::hash_algo
firmware: smccc: Pass only the required device probe arguments
firmware: arm_rmm: Add SPDX and sort the Kconfig and Makefile entries
coco: guest: arm64: Remove dummy CCA platform device
coco: guest: arm64: Add sysfs ABI for CCA Realm guests
firmware: smccc: arm-cca-guest: Bind the TSM provider to an SMCCC device
virt: coco: arm-cca-guest: Rename TSM report source file
arm64: realm: Move Realm memory encryption ops to RSI code
firmware: arm_rmm: Move RSI support out of arch/arm64
firmware: hwrng: arm_smccc_trng: Register as an SMCCC device
firmware: smccc: Add an Arm SMCCC bus
* for-next/preemptible-this-cpu:
: Preemptible this_cpu_*() operations
arm64: percpu: Remove _pcp_protect*() wrappers
arm64: percpu: Implement preemptible CMPXCHG128 ops
arm64: percpu: Implement preemptible CMPXCHG ops
arm64: percpu: Implement preemptible XCHG ops
arm64: percpu: Implement preemptible return RMW ops
arm64: percpu: Implement preemptible void RMW ops
arm64: percpu: Implement preemptible read/write ops
arm64: percpu: Add infrastructure for preemptible this_cpu_*() ops
arm64: entry: sdei: Make 'tsk' available
arm64: entry: sdei: Restore all clobberable GPRs
arm64: gpr-num: add __GPR_NUM() helper
arm64: gpr-num: Add wxN aliases for wN registers
arm64: percpu: Factor out percpu offset asm
arm64: ptrace: Always inline pt_regs_{read,write}_reg()
arm64: preempt: Treat should_resched() as unlikely
arm64: preempt: Simplify and optimize __preempt_count_dec_and_test()
arm64: cmpxchg128: LSE: Remove redundant operands
arm64: cmpxchg: LL/SC: Avoid redundant extension
* for-next/cpu-errata:
: Various CPU errata workarounds
arm64: errata: Add NXP i.MX8QM/8QP workaround for A53 cache coherency issue
arm64: cpufeature: Add ARM64_CPUCAP_SOC_ERRATUM for SoC-level errata
* for-next/mpam: (30 commits)
: MPAM updates
arm_mpam: make the mon_sel guard conditional only
arm_mpam: On saving mbwu state read the monitors before clearing CFG_MBWU_CTL
arm_mpam: detect and enable MPAM-Fb PCC support
arm_mpam: change MPAM-Fb error IRQ to use a threaded IRQ handler
arm_mpam: add MPAM-Fb MSC firmware access support
arm_mpam: prepare mon_sel locking for MPAM-Fb
arm_mpam: propagate MSC access errors in mpam_reset_class_locked()
arm_mpam: propagate MSC access errors for interrupt control
arm_mpam: propagate MSC access errors for mpam_reprogram_ris_partid()
arm_mpam: propagate MSC access errors for state saving function
arm_mpam: propagate MSC access errors for __ris_msmon_read()
arm_mpam: propagate MSC access errors for msmon helpers
arm_mpam: propagate MSC access errors for MBWU counters
arm_mpam: propagate MSC access errors for hw_probe functions
arm_mpam: let low level MSC accessors return an error
MAINTAINERS: Use linux-arm-kernel list for the MPAM driver
MAINTAINERS: Add mpam.rst to the MPAM DRIVER entry
arm_mpam: resctrl: Don't stop early when tearing down a class
arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg
arm_mpam: Don't loop forever if there is the maximum possible amount of PARTIDs
...
* for-next/kselftest:
: arm64 kselftest updates
kselftest/arm64: signal: copy each test binary only once
kselftest/arm64/mte: Use MTE safe memory accessors
kselftest/arm64/mte: Introduce MTE safe memory accessors
kselftest/arm64: Extend gcs-locking to cover cases where enable is unlocked
* for-next/efi:
: arm64 EFI updates/fixes
arm64/mm: Treat faults taken by EFI runtime firmware as kernel faults
arm64/efi: Clear PTE_WRITE when applying EFI_MEMORY_RO
* for-next/secondary-boot-prep:
: cpuinfo cleanup in preparation for parallel secondary bring-up
arm64: smp: Defer RCU registration during secondary CPU bringup
arm64: smp: Don't bother printing the I-cache policy for each CPU
arm64: smp: Defer update of secondary CPU capabilities
arm64: smp: Tidy up cpuinfo init and cpufeature updates
arm64: smp: Tidy up smp_prepare_cpus()
arm64: cpufeature: Store every ID register with its overrides applied
arm64: cpufeature: Read MPAMIDR_EL1 in __cpuinfo_store_cpu()
arm64: cpufeature: Add read_cpuid_with_overrides()
arm64: cpufeature: Check arm64_ftr_regs[] before the first store
* for-next/sysreg:
: sysreg updates
perf: arm_brbe: Remove the check for TME transaction states
arm64: sysreg: Mark fields the architecture dropped as RES0
arm64: sysreg: Fix the names of two misspelt fields
arm64: sysreg: Fix three incorrect enum values
* for-next/gcs:
: GCS updates/fixes
kselftest/arm64: Check for -EPERM not -EBUSY in the locking test
arm64: gcs: Return -EPERM not -EBUSY for prctl() locking failures
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According to NXP errata document IMX8_1N94W[1], the i.MX8QuadMax and
i.MX8QuadPlus SoCs suffer from a cache coherency issue (ERR050104). The
upper bits, above bit 35, of the ARADDR and ACADDR buses within the Arm
A53 subsystem have been incorrectly connected. This causes some TLBI and
IC maintenance operations exchanged between the A53 and A72 core
clusters to be corrupted.
The workaround requires:
- Downgrading targeted TLBI operations to broadcast-all variants.
Instead of patching the low-level __TLBI_1 macro (which causes
excessive over-invalidation), redirect high-level TLB flush
functions (flush_tlb_mm, __do_flush_tlb_range,
flush_tlb_kernel_range, __flush_tlb_kernel_pgtable) to use VMALLE1IS
via alternatives.
- Upgrading IC IVAU to IC IALLUIS for both kernel (via ALTERNATIVE in
invalidate_icache_by_line) and EL0 userspace (via trap-and-upgrade
in user_cache_maint_handler with SCTLR_EL1.UCI=0).
- Disabling KVM since correct TLB maintenance cannot be guaranteed
for guests.
- No need to touch SMMU Broadcast TLB Maintenance (BTM) since the
arm-smmu driver does not use it.
SoC detection uses devicetree compatible string "fsl,imx8qm" or
"fsl,imx8qp" since the boot CPU MIDR_EL1 (0x410fd034) and AIDR_EL1 (0)
are not unique to these SoCs.
[1] https://www.nxp.com/docs/en/errata/IMX8_1N94W.pdf
[ Reworked per review feedback from Will Deacon and Mark Rutland:
- Move TLBI workaround from __TLBI_1 macro to high-level flush
functions to avoid excessive over-invalidation
- Add kernel IC IVAU upgrade via ALTERNATIVE in assembler.h
- Add cpucap_is_possible() entry for compile-time elimination]
Tested-by: Franz Schnyder <franz.schnyder@toradex.com> # Toradex Apalis iMX8QM
Co-developed-by: Ivan T. Ivanov <iivanov@suse.de>
Signed-off-by: Ivan T. Ivanov <iivanov@suse.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
[catalin.marinas@arm.com: Kconfig and errata text, sysreg_clear_set(), of_machine_compatible_match()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
|
Device DAX now uses the common per-zone shared tail page for vmemmap
deduplication. The old documentation still described a DAX-specific
layout with a separately populated tail vmemmap page and half the HugeTLB
savings.
Update the generic and powerpc documentation to describe the shared
layout. In the powerpc document, keep the radix and 64K-specific details,
drop the duplicated 4K PUD arithmetic, and replace the repeated device-dax
diagrams with a single parameterized PMD/PUD diagram.
Link: https://lore.kernel.org/20260930140627.57431-13-songmuchun@bytedance.com
Signed-off-by: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Qi Zheng <qi.zheng@linux.dev>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <chleroy@kernel.org>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Lance Yang <lance.yang@linux.dev>
|
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Zic64b mandates 64-byte naturally aligned cache blocks and is a
mandatory extension of the RVA22 and RVA23 profiles. Allocate a
RISCV_ISA_EXT_ZIC64B id, parse "zic64b" from the ISA string with a
validate callback that requires each cbom/cbop/cboz cache block size to
be 64 bytes when it is present, and export it through hwprobe.
Link: https://lists.riscv.org/g/tech-unprivileged/topic/question_about_zic64b_and/119631059
Reviewed-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Qingwei Hu <qingwei.hu@bytedance.com>
Co-developed-by: Guodong Xu <guodong.xu@oss.qualcomm.com>
Signed-off-by: Guodong Xu <guodong.xu@oss.qualcomm.com>
Link: https://patch.msgid.link/20260920-rva23u64-hwprobe-v2-v8-4-5f14bc5c23d3@oss.qualcomm.com
[pjw@kernel.org: updated to apply]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Add B to hwcap and ensure when B is present that Zba, Zbb, and Zbs
are all set. Also expose B via hwprobe (RISCV_HWPROBE_EXT_B in
RISCV_HWPROBE_KEY_IMA_EXT_1) so that userspace can probe B directly,
mirroring the F/D/C/V pattern where each is reported via both hwcap
and hwprobe.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
[guodong.xu: Add B to hwprobe]
Signed-off-by: Guodong Xu <guodong.xu@oss.qualcomm.com>
Link: https://patch.msgid.link/20260920-rva23u64-hwprobe-v2-v8-1-5f14bc5c23d3@oss.qualcomm.com
[pjw@kernel.org: updated to apply]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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The erratum (MMU-700: #3777127, S3: #3673557) deals with under
invalidation of a CONT PTE grouping in the SMMU. The recommended work
around is to use a range invalidation that spans the entire CONT. The only
user of CONT in the kernel right now is through SVA sharing a CPU page
table that contains a CONT created by the mm.
Previously it was thought that this errata was dealt with because the
driver always uses range invalidation. However, there is a subtle detail
in the errata that the invalidation range must fully enclose the entire
CONT for it to work.
It seems that two sequential range invalidations, with a split point
falling inside a CONT grouping, will not prevent the errata.
The SMMU's range invalidation generation algorithm does not produce a
single invalidation for a single SVA invalidation request, nor does the mm
carefully align the SVA invalidation ranges to accommodate the splitting
of the invalidation into several ranges.
Thus, when processing a SVA invalidation, the range invalidation splitting
routine can generate a range invalidation that is split in the middle of
the CONT and risk under invalidation from this errata. This condition
could be triggered by a malicious userspace manipulating the TLB gathers
via mmap/mprotect/munmap.
Update the errata list to the include the S3 variation, detect the IOMMUs
that have it, and then have SVA invalidations use a simplified version of
the over invalidation algorithm from the tlbi rework series. This ensures
that a single range invalidation is issued for a single MMU notifier
callback and now the range invalidation is guarenteed to cover any posible
CONT.
Future work to add CONT to iommu_domain page tables should either use this
one-invalidate/one-range invalidation algorithm or disable CONT support in
the iommu_domain.
Cc: stable@vger.kernel.org
Cc: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
Fixes: 3f1ce8e85ee0 ("iommu/arm-smmu-v3: Share process page tables")
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Pranjal Shrivastava <peaan@google.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Will Deacon <will@kernel.org>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Half of this is broken hardware (AMU counters and TLB invalidation)
and the other half is broken software (frequency scaling and signals).
So it seems as though we're all as bad as each other.
The AMU workaround is a little noisy, as it refactors an existing
workaround so that it can more easily be applied to additional CPUs.
Summary:
- Fix handling of CPU erratum #2645198 when batching pte updates
- Fix truncation of CPU frequency calculation by using 64-bit
arithmetic in arch_freq_get_on_cpu()
- Work around AMU erratum #3821522 on Cortex-A725
- Fix panic when trying to restore an SVE sigframe on a CPU that only
supports SME"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/fpsimd: signal: Forbid non-streaming SVE payload on SME-only systems
arm64: errata: Add Cortex-A725 erratum 3821522 workaround
arm64: errata: Factor out broken AMU const counter cap
arm64: topology: fix arch_freq_get_on_cpu() overflow above 4.19 GHz
arm64: mm: Fix the break-before-make flush range for erratum 2645198
|
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arm64.nompam skips the MPAM2_EL2 and MPAMHCR_EL2 writes in
finalise_el2_state and leaves the ARM64_MPAM cpucap unset. Where EL3
firmware has cleared MPAM3_EL3.TRAPLOWER, the EL2 trap controls are
left unwritten, at reset values that are UNKNOWN, and KVM still hides
MPAM from the guest but no longer enables the traps that stop a guest
from using it. KVM never saves or restores MPAM0_EL1, MPAM1_EL1 and
MPAMSM_EL1, so what one guest writes reaches the next guest and the
host. Nor can the kernel make the EL2 writes unconditionally: they trap
to EL3 on the firmware the option exists for, and TRAPLOWER cannot be
read below EL3.
Say so in mpam.rst, and add the rule and a pointer to the
kernel-parameters entry.
Suggested-by: Ben Horgan <ben.horgan@arm.com>
Link: https://lore.kernel.org/all/CA+EHjTxeWxZiuSmnKLGLxTBXP4oJT7-LuffbPAyCSZZ5TW=5Ew@mail.gmail.com/
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
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Cortex-A725 erratum 3821522 affects the CNT_CYCLES event, which can
incur a significant increment error when a CPU enters and subsequently
exits WFE or WFI, and may no longer track the system counter
frequency.
The AMEVCNTR01_EL0 counter is used as the AMU constant counter for
frequency invariance and CPPC FFH feedback counters. Wire the affected
Cortex-A725 range into the shared broken AMU constant-counter capability
so the affected counter is treated as unavailable by returning zero in
the AMU counter paths. This prevents the broken counter from being used
as a reference source.
The erratum can also affect PMUv3 users of the CNT_CYCLES event,
but this workaround intentionally does not change PMU event handling.
Hiding or rejecting the PMU event from the erratum code would change
the perf-visible PMU event interface, including raw event selection,
and would need a separate PMU-specific approach rather than being
folded into the AMU reference-counter workaround.
Cc: stable@vger.kernel.org
Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
Wrap long PKS hcall return-value lines consistently and fix a typo in the
H_PKS_UNWRAP_OBJECT description.
Also update the MAINTAINERS entry from KEYS-TRUSTED-PLPKS to
KEYS-TRUSTED-PKWM to reflect the PowerVM Key Wrapping Module naming.
Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com>
Tested-by: R Nageswara Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260923182816.151451-13-ssrish@linux.ibm.com
|
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The x86 signal frame is designed to be self-describing, with the
'xstate_size' field in the software-reserved bytes indicating the actual
size of the context. This design is required for portability, allowing a
signal frame created on a system with a specific set of xstate features
to be restored on a machine with a different (larger) set of features.
Signed-off-by: Andrei Vagin <avagin@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Alexander Mikhalitsyn <alexander@mihalicyn.com>
Link: https://patch.msgid.link/20260925162454.1403405-2-avagin@google.com
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|
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- Fix several bugs in PCI error recovery SCLP reporting: don't report
success on skipped recovery, report errors when no pdev is
associated, add missing device lock, and fix struct pci_dev reference
leak in zpci_report_status()
- Fix several bugs in CIO code: fix use of invalid SCHIB data, guard
PMCW field accesses, check device number valid bit in PMWC before
accessing other fields, and fix NULL pointer dereference in
ccw_device_get_util_str()
- Fix virtual vs physical address confusion in channel measurement
facility code on kernels with CONFIG_RANDOMIZE_IDENTITY_BASE=y
- Fix couple of bugs in s390dbf: fix copy of failed static debug areas,
skip view registration on failure, and reject NULL pointer in
debug_dump()
- Fix sriov_numvfs attribute name in zPCI documentation
- Fix typos in comments
* tag 's390-7.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()
s390/debug: Fix NULL pointer dereference in debug_info_copy()
s390/debug: Do not register views for failed static debug areas
s390/debug: Reject NULL debug info in debug_dump()
s390/cmf: Fix virtual vs physical address confusion
s390/pci: Don't report recovery success on skipped recovery
s390/pci: Report SCLP status on error events when no pdev is associated
s390/pci: Fix missing device lock in zpci_report_status()
s390/pci: Fix leak of struct pci_dev reference in zpci_report_status()
s390/cio: Guard PMCW field accesses with dnv check
s390/cio: Check pmcw.dnv before pmcw.ena in I/O entry points
s390/cio: Fix cio_update_schib() to not cache invalid schib
s390/pci/docs: Fix sriov_numvfs attribute name
s390: Fix typos in comments
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Fix the recently merged user ABI for the Arm CMN PMU driver filtering
logic so that the ordering matches the hardware spec
- Fix spurious warning when attempting to read PROT_NONE mappings of
/dev/mem
- Allow WFxT to be disabled on the command line, which is necessary for
some configurations of recent Apple SoCs
- Fix EL2 fine-grained trap configuration for the CPU PMU
- Fix MIDR matching when applying CPU errata workarounds in a VM
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/boot: Disable trapping of PMZR_EL0 writes to EL2
arm64: errata: match the target implementation CPU's own MIDR
arm64: Add override for WFxT
arm64: io: Reject non-user protection in ioremap_prot()
perf/arm-cmn: Fix multi-filter encoding
|
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Add the missing "i" to "initalised" in the description of the
spin-table cpu-release-addr property.
The British spelling is deliberate. doc-guide/contributing.rst asks
that both American and British spellings be left alone, so only the typo
is corrected, not the dialect. checkpatch.pl suggests "initialized"
here because scripts/spelling.txt maps this entry to the American form;
that is addressed separately.
Assisted-by: Cursor:claude-opus-5
Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
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__init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2.
PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in
HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host
traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The
kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU
driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a
write from EL0 reaches the trap and takes the host down without a panic
message.
Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already
does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9
bits.
Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9")
Cc: stable@vger.kernel.org
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"In this batch we've got a couple of hibernation fixes, a couple of
minor MTE fixes, some per-cpu codegen fixes (which were found as part
of Mark's series adding preemptible this_cpu_*() operations) and a fix
for the Arm CMN PMU driver.
Summary:
- Fix hypercall arguments when resetting EL2 vectors during
hibernation
- Fix hibernation with 52-bit capable kernels on machines without
52-bit addressing, similarly to the recent kexec fix
- Fix a bunch of clumsy codegen issues with our per-cpu accessors
- Fix MTE ptrace documentation to reflect the de-facto ABI behaviour
- Fix pthread_join() usage in MTE selftest
- Fix port selection in the Arm CMN PMU driver"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mte: Fix PTRACE_{PEEK,POKE}MTETAGS error documentation
kselftest/arm64: Fix size of thread_data values for pthread_join()
arm64: percpu: Fix LSE operations on {8,16}-bit types
arm64: percpu: Fix this_cpu_and() mask generation
arm64: percpu: Fix this_cpu_write() casting
arm64: hibernate: clone only the linear map that exists at runtime
perf/arm-cmn: Fix wp_dev_sel2 setting for multi-DTM configurations
arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc
|
|
The attribute is sriov_numvfs (drivers/pci/iov.c); the document names it
sriov_numvf, which does not exist.
Use sriov_numvfs.
Fixes: de267a7c71ba ("s390/pci: Documentation for zPCI")
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
example
struct vas_setup_attr does not exist; the name is struct
vas_tx_win_open_attr. The example also defines VAS_TX_WIN_OPEN with the
request number 1, while arch/powerpc/include/uapi/asm/vas-api.h has used
0x20 since the ioctl was added.
Use struct vas_tx_win_open_attr and 0x20.
Fixes: c12e38b1d52e ("Documentation/powerpc: VAS API")
Suggested-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260907004925.10948-1-kmehltretter@gmail.com>
|
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PTRACE_{PEEK,POKE}MTETAGS return -EIO rather than -EOPNOTSUPP (as
documented) when no tags are copied from/to a mapping without PROT_MTE.
This has been the behaviour since the interface was introduced, though
the original intent was to distinguish between address not being
accessible and mapped as untagged.
Update the documentation to match the implementation (de-facto ABI).
Since -EOPNOTSUPP was never returned, change the error assignment to
-EIO as well to avoid confusion.
Fixes: df9d7a22dd21 ("arm64: mte: Add Memory Tagging Extension documentation")
Fixes: 18ddbaa02b7a ("arm64: mte: ptrace: Add PTRACE_{PEEK,POKE}MTETAGS support")
Reported-by: Yury Khrustalev <yury.khrustalev@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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Agilex5 integrates GIC600 with an ACE-lite interface limited to a 32-bit
address bus, so the ITS can only access the first 4 GB of physical address
space. Register intel,socfpga-agilex5 on the existing
dma_32bit_impaired_platforms list so ITS allocations use GFP_DMA32.
The workaround is guarded by ALTERA_ERRATUM_AGILEX5_2_1_23, which is
selected by ARCH_INTEL_SOCFPGA as all Agilex5 devices are affected.
This limitation is documented as Agilex 5 ES Device Errata 2.1.23 (825514).
Signed-off-by: Adrian Ng Ho Yin <adrian.ho.yin.ng@altera.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://docs.altera.com/r/docs/825514/current/agilex-5-es-device-errata-and-user-guidelines/hps-gicv3-its-and-lpi-unable-to-access-physical-memory-larger-than-32-bits-causing-msi-x-interrupt-failure
Link: https://lore.kernel.org/linux-arm-kernel/372f059069a5551ea1096015f855cc306dbd7cd4.1747368554.git.adrianhoyin.ng@altera.com/ # v1
Link: https://lore.kernel.org/linux-arm-kernel/6a44509ca0edaabc17e59d2e27fef1c782183456.1751618484.git.adrianhoyin.ng@altera.com/ # v2
Link: https://lore.kernel.org/linux-arm-kernel/20260622024945.21354-1-muhammad.nazim.amirul.nazle.asmade@altera.com/ # v3 (untagged)
Link: https://lore.kernel.org/all/20260904091114.2259616-1-adrian.ho.yin.ng@altera.com/ #v4
Link: https://patch.msgid.link/fc927e43892b86200e157fa303b0d1dd344caffd.1788751033.git.adrian.ho.yin.ng@altera.com
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Expand TDX documentation to include information on the Dynamic PAMT
feature.
The new section explains PAMT support in the TDX module and how Dynamic
PAMT affects the kernel memory use.
Some of the docs verbiage was provided by Dave Hansen (see link). AI was
used under supervision to review the docs.
Based on a patch originally by Kiryl Shutsemau.
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Reviewed-by: Tony Lindgren <tony.lindgren@linux.intel.com>
Acked-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Hongyu Ning <hongyu.ning@linux.intel.com>
Link: https://lore.kernel.org/all/8e40862e-891a-4cad-8bb8-06ad25ad6061@intel.com/
Link: https://patch.msgid.link/20260904215841.303070-11-rick.p.edgecombe@intel.com
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The RISC-V ISA manual specifies that Zfh implies Zfhmin, a normative
rule clarified in
https://github.com/riscv/riscv-isa-manual/pull/3070. Zvfh likewise
implies Zvfhmin, as stated by the vector extension specification.
The kernel currently reports ZFH and ZFHMIN (and ZVFH and ZVFHMIN) as
independent hwprobe bits derived only from what the device tree
declares. Platforms that declare just "zfh" (Zfh being a superset that
already contains all Zfhmin instructions) therefore report
RISCV_HWPROBE_EXT_ZFHMIN=0, which breaks userspace RVA23 conformance
checks (e.g. snapd installing core26 on riscv64).
Use the existing superset mechanism to set the implied subset bits:
- zfh implies zfhmin
- zvfh implies zvfhmin
Add a hwprobe selftest asserting the implication holds and update the
hwprobe documentation accordingly.
This is complementary to the rva23u64 base behavior discussion: the
RVA23 conformance query proposed there is derived from the
per-extension bits fixed here, so correct EXT_0 reporting is a
prerequisite for it to work on harts whose device tree declares only
"zfh".
Tested on a RISC-V QEMU VM whose device tree only declares "zfh" and
"zvfh": with this change both /proc/cpuinfo and the hwprobe
RISCV_HWPROBE_KEY_IMA_EXT_0 bitmap report ZFHMIN and ZVFHMIN, and the
hwprobe selftest (including the new implication check) passes.
Link: https://lore.kernel.org/kvm-riscv/20260206002349.96740-1-andrew.jones@oss.qualcomm.com/
Signed-off-by: JinRui <jinrui@haiwei.tech>
Link: https://patch.msgid.link/7190E4DB338251C3+20260811081513.2849980-1-jinrui@haiwei.tech
[pjw@kernel.org: trimmed superfluous blank line in tags]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen
"Highlights:
Major refactoring effort: stop setting acpi_device_name/class() and
pnp.device_class to facilitate their eventual removal
Many rollback/remove path fixes (presumably mostly found by AI)
Miscellaneous cleanups / refactoring / improvements
amd/halo:
- Add Halo RGB LED driver
amd/hsmp:
- Properly serialize probe, remove, and data paths
- Add support for protocol v7 used by Family 1AH Model 80H
- Fix error checking corner cases (largely from AI review)
- Reject negative power cap
amd/pmc:
- Improve behavior on platforms that do not support STB
- Add T14 Gen2 AMD (20XL) to s2idle quirk list
amd/pmf:
- Add ioctl interface to retrieve device metrics
- Add support for new metrics tables used by Family 1AH Model 80H
qcom-hamoa-ec (arm64):
- Reject short responses
asus-nb-wmi:
- Support ProArt key on ASUS ProArt PX13
asus-armoury:
- Gate PPT writes behind active fan curve
- Add power limits for more models
dell-wmi-base:
- Fix handling of ultra performance key
dell-wmi-sysman:
- Don't hex dump attribute security buffer
hp-bioscfg:
- Various fixes
- Improve reduced ACPI packages support (necessary for HP EliteBook 840 G2)
lg-laptop:
- Fix LED resource handling
- Add support for events used in newer models
- Fix keyboard backlight support on LG Gram 16T90SP
hp-wmi:
- Generalize thermal params to board params
- Manage CPU and GPU PWM independently
- Add GPU MUX switch support
- Add Victus 15-fb0xxx support
- Add OMEN MAX 16-ak0xxx, OMEN 16-n0xxx, OMEN 16-wd0xxx, OMEN
16-wf0xxx, and OMEN board ID 8D88 support
- Add OMEN Transcend 16-u0xxx support
huawei:
- Add support for Fn-lock ACPI interface found on newer Huawei
laptops such as MateBook 14 2024
ISST:
- Improve input validation (many fixes)
- Disallow SST-CP (core-power) feature if perf profile add fails
lenovo/yb9-kbdock:
- Add driver for Yoga Book 9 14IAH10
lenovo/ymc:
- Extend hinge switch query to support Yoga 9 2-in-1 14IPH11
- Prevent loading on Yoga Book 9 14IAH10 to avoid duplicated input
nodes
msi-ec:
- Add MSI Raider A18 HX A9WJG and MSI Katana GF76 11UEK support
msi-wmi:
- Add MSI Claw M-Center keys support
oxpec:
- Add support for OneXPlayer X2 Mini Pro
redmi-wmi:
- Report kbd backlight cycle, OEM preset power mode, and FnLock
toggle events to userspace
samsung-galaxybook:
- Add Samsung Galaxy Book6 Pro support
thinkpad_acpi:
- Add USB-C Security support
uniwill-laptop:
- Add keyboard backlight, AC auto boot, and USB powershare support
- Add MACHENIKE L16 Pro, AiStone X4SP4NAL, and Avell A60 MUV support
- Make lightbar max brightness configurable and add support for
LAPQC71A/B"
* tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (152 commits)
platform/x86: think-lmi: Fix current password length check
platform/x86: redmi-wmi: report EC state change events
MAINTAINERS: update Intel PMC Core maintainer contact
platform/x86: oxpec: Add support for OneXPlayer X2 Mini Pro
platform/x86: thinkpad_acpi: Fix fan speed reporting on Edge E330
platform/x86: msi-ec: Add MSI Katana GF76 11UEK EC firmware
platform/x86: think-lmi: Fix certificate thumbprint sysfs output
mlxbf-bootctl: fix the build error with FIELD_PREP()
platform/x86: think-lmi: Free system certificate signatures
platform/x86: ISST: Add a NULL check for sst_inst[]
platform/x86: ISST: Return error during profile addition
platform/x86: ISST: Just allow 2 bits for SST feature enable
platform/x86: ISST: Use PP level enable mask
platform/x86: ISST: Validate parameter for frequency and priority
platform/x86: ISST: Validate parameter for core power state
platform/x86: ISST: Validate max level for set feature
platform/x86: ISST: Validate logical CPU id and clos id
platform/x86: ISST: Validate level in perf mask ioctls
platform/x86: ISST: Validate socket ID in clos_assoc ioctl
platform/x86/amd/hsmp: Reject negative power cap writes in hwmon
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Add hotplug reservation only once (not at each level of the
hierarchy) so bridge windows don't grow more than necessary (Ilpo
Järvinen)
Driver binding:
- Rework device matching so device ID lifetime only needs to cover
the probe path since dynamic IDs can be removed at any time (Gary
Guo)
Error handling:
- Update mappings of AER errors to agent & layer and log them for
each individual error when multiple errors detected (Lukas Wunner)
- Log Error Source only once, not twice in separate messages (Lukas
Wunner)
- Emit TLP Log only for unmasked errors (Lukas Wunner)
- Support Advisory Non-Fatal Errors (Lukas Wunner)
- Allow DPC on all Downstream Ports, not just Root Ports, when OS
controls AER (Darshit Shah)
ASPM:
- Program the same ASPM Control values for every function of
multi-function devices, as recommended by the PCIe spec (Krishna
Chaitanya Chundru)
- Avoid L0s for Realtek RTS525A, where it causes an AER interrupt
storm (Max Lee)
- Avoid ASPM L0s, L1, and L1 PM Substates based on 'aspm-no-l0s',
'aspm-no-l1' [1], and 'aspm-no-l1ss' DT properties (Krishna
Chaitanya Chundru)
Power management:
- Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
(we avoid D3 for these ports on x86 because some old platforms
didn't validate it) (Manivannan Sadhasivam)
- Allow portdrv to claim Ports even if they don't support services
(AER, PME, DPC, hotplug, etc) so it can do power management (Brian
Norris)
Power control:
- Add support for PCIe WAKE# interrupt when described via DT (Krishna
Chaitanya Chundru)
- For the TC9563 PCIe switch:
- Take a reference on the I2C adapter to avoid uninterruptible
hang when unloading an I2C module while in-use (Johan Hovold)
- Update DT binding and driver to restrict Tx Amplitude, DFE and
N_FTS to USP, DSP1 and DSP2 (Manivannan Sadhasivam)
- Power off only external-facing ports (DSP1, DSP2), leaving USP
and DSP3 (aka VDSP) powered up (Manivannan Sadhasivam)
- Move integrated MAC Endpoint out of the list of internal ports
and configure it separately (Manivannan Sadhasivam)
Virtualization:
- Add ACS quirk for Pericom PI7C9X2G608 switches (Tim Harvey)
- Fix a long-standing bug in the Intel PCH Root Port MPC ACS quirk
that didn't update the intended INTEL_MPC_REG_IRBNCE bit because it
used a 16-bit config write when a 32-bit write was intended
(Mohamad Raizudeen)
Procfs:
- Avoid spurious runtime PM wakeup on config space accesses that are
outside config space and fail before reaching PCI (Krzysztof
Wilczyński)
- Warn on user-space writes to kernel-exclusive config space regions,
as we already do for sysfs (Krzysztof Wilczyński)
- Check credentials of opener, not reader, for config space reads, as
we already do for sysfs (Krzysztof Wilczyński)
Sysfs:
- In pci_write_legacy_io(), avoid out-of-bounds reads from the user
buffer and fix incorrect ioport write data (1-byte writes on
little-endian powerpc, 2- and 4-byte writes on big-endian powerpc)
(Krzysztof Wilczyński)
- In pci_read_legacy_io(), fix incorrect ioport read data for 2- and
4-byte reads on big-endian powerpc (Krzysztof Wilczyński)
- Fix I/O port accessor argument order in Alpha pci_legacy_write()
(Krzysztof Wilczyński)
- Avoid spurious runtime PM wakeup on config space accesses that are
outside config space and fail before reaching PCI (Krzysztof
Wilczyński)
- Return -EINVAL, not -ENODEV, for mmap of I/O BAR that fails because
the arch doesn't support it, as we do for procfs (Krzysztof
Wilczyński)
- Check for LOCKDOWN_PCI_ACCESS for legacy_io and legacy_mem, as we
do for other config space accessors (Krzysztof Wilczyński)
Peer-to-peer DMA:
- Add Nvidia Vera Rubin to list of platforms that support P2PDMA
(Leon Romanovsky)
Endpoint framework:
- Check doorbell SUCCESS bit in pci_endpoint_test to avoid treating
some failures as successes (Niklas Cassel)
- Fail doorbell test when the trigger IRQ is missed (Niklas Cassel)
New native PCIe controller drivers:
- Add DT binding and driver for NVIDIA Tegra264 (Thierry Reding)
Native PCIe controllers:
- Use common wait time definitions for PCIe link monitoring instead
of defining driver-private duplicates (Thierry Reding)
Generic host bridge driver:
- Fix NULL pointer dereference that caused enumeration failures on
32-bit CAM systems (Steffen Persvold)
Amlogic Meson PCIe controller driver:
- Correct the PERST# GPIO state so it remains asserted until power
and REFCLK become stable to fix enumeration failure (Ronald
Claveau)
ASPEED PCIe controller driver:
- Switch to irq_domain_create_linear() so we can obsolete
irq_domain_add_linear() (Jiri Slaby)
Cadence PCIe controller driver:
- Add MODULE_DEVICE_TABLE to generate module aliases for OF-based
module autoloading (Pengpeng Hou)
- Add debugfs 'ltssm_status' file for LGA- and HPA-based Cadence
controllers (Hans Zhang)
- Support up to x4 (not x2) lanes for J200 (Takuma Fujiwara)
- Fix host/endpoint dependencies for cadence-plat driver to fix link
error when cadence-plat is built-in but the host or endpoint driver
is modular (Aksh Garg)
Freescale i.MX6 PCIe controller driver:
- Add imx6 intr/aer/pme interrupt lines for i.MX95 (Richard Zhu)
- Remove PERST# checking from pci_host_common_parse_port() so callers
can decide whether to fall back to legacy DT binding with PERST# in
the host bridge (Sherry Sun)
- Fix build issues when PCI_PWRCTRL_GENERIC or PCI_HOST_COMMON is a
module (Arnd Bergmann)
- Create pwrctrl devices only once by doing it from imx_pcie_probe()
instead of imx_pcie_host_init(), which is used during both probe
and resume (Sherry Sun)
- Use 'dw_pcie_rp->skip_pwrctrl_off' to avoid powering off devices
during suspend to preserve wakeup capability (Sherry Sun)
- Add runtime PM support for i.MX95 to allow dynamic power management
when the link is idle (Richard Zhu)
Intel VMD host bridge driver:
- Support device ID 0x28C1 and assume that BIOS has already
enumerated the hierarchy below VMD and stored bus range info for OS
to use (Nirmal Patel)
- Add support for VMCONFIG BUS_RESTRICT_CFG=3, which makes it
possible to enumerate downstream devices on Intel Arrow Lake-HX
systems and probably others (Ali Alaei)
- Pay attention to _OSC negotiation for VMD hierarchy only when
running on bare metal, not when running in a VM (Nirmal Patel)
- Add Nova Lake (NVL) and Dunlow (DNL) Device IDs (Szymon Durawa)
MediaTek PCIe controller driver:
- Add support for PCIe controller in EcoNet EN7528 and EN751221 SoCs
(Caleb James DeLisle)
MediaTek PCIe Gen3 controller driver:
- Add mediatek-gen3 'memory-region' for restricted DMA buffer
(Chen-Yu Tsai)
NVIDIA Tegra264 PCIe controller driver:
- Distinguish Tegra264 C0 PCIe controller for internal GPU from C1-C5
controllers so the unit address matches the first 'reg' entry
(Thierry Reding)
- Add Tegra264 Root Port stanzas to prepare for generic WAKE#
handling (Thierry Reding)
Qualcomm PCIe controller driver:
- Add IPQ9650 compatible with global interrupt (Kathiravan
Thirumoorthy)
- Add IPQ5210 compatible with IPQ9574 fallback (Varadarajan
Narayanan)
- Add DT binding and driver support for Hawi SoC (Matthew Leung)
- Skip PERST# GPIOs provided by downstream PCIe devices, which should
be handled by drivers of those devices (Manivannan Sadhasivam)
- Stop advertising Attention Button Present (no Qcom SoCs support
Attention Buttons) so pciehp can use Presence Detect Changed events
(Qiang Yu)
Renesas R-Car PCIe controller driver:
- Add rcar-gen4-pci-host optional 'msi-parent' for GIT ITS (Marek
Vasut)
- When MSI is enabled but iMSI-RX is not used, configure AXIINTC to
allow GIT ITS to handle MSI (Marek Vasut)
- Refactor GIC600 implementation to make it easier to add platforms
that only support 32-bit addressing (Marek Vasut)
- Add Renesas R-Car Gen4 S4/V4H/V4M to the list of GIC600
integrations that only support 32-bit addressing (Marek Vasut)
Renesas RZ/G3S PCIe controller driver:
- Add DT binding and driver support for RZ/V2H(P) SoC, which contains
two PCIe controllers, configured either as a single x4 link or two
independent x2 link controllers (Lad Prabhakar)
SpacemiT K1 PCIe controller driver:
- Add missing MODULE_DEVICE_TABLE() to generate module alias info for
OF-based module autoloading (Pengpeng Hou)
StarFive PCIe controller driver:
- Fix resource leaks on error paths in host_init() (Ali Tariq)
- Fix runtime PM handling and teardown ordering to avoid register
access while power or clocks are disabled (Ali Tariq)
- Check for runtime PM resume failure to avoid register access while
power or clocks are disabled (Ali Tariq)
Synopsys DesignWare PCIe controller driver:
- Add LECARC PMU IDs to the DWC RAS/DES VSEC list so it can take
advantage of the existing debugfs support for silicon debug, error
injection, and event counters (Brett Zhou)
- Factor pcie_valid_speed() and pci_bus_speed2lnkctl2() out of bwctrl
so they can be shared by the DWC core (Hans Zhang)
- Flush MSI writes from endpoint before unmapping the iATU, as we
already do for MSI-X writes (Niklas Cassel)
- Unmap MSI iATU window before mapping MSI-X window, to avoid a
subsequent MSI write using a disabled aperture and losing the
interrupt (Niklas Cassel)
- Change endpoint .pre_init() and .init() callbacks to return errors
and handle them (Marek Vasut)
UltraRISC PCIe controller driver:
- Add 'core', 'dbi', and 'aux' clocks to DT binding and manage them
in the driver (Jia Wang)
- Use module_platform_driver() since this may be built as a module,
though not removable because IRQs can't be safely disposed (Jia
Wang)
MicroSemi Switchtec management driver:
- Add Microchip PCI1008 device ID and include it in NTB DMA alias
quirk (Logan Gunthorpe)
Miscellaneous:
- Document how to write PCI Host Controller drivers (Manivannan
Sadhasivam)
- Fix typos in documentation (D'Orus Tsitera)
- Use %pe format specifier to print error pointers so we get symbolic
errname when available (Krzysztof Wilczyński)"
* tag 'pci-v7.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (124 commits)
PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs
PCI: tegra264: Add Tegra264 support
dt-bindings: PCI: tegra264: Switch to PCIe Root Port bindings
dt-bindings: PCI: tegra264: Strictly distinguish C0 from C1-C5
PCI/AER: Support Advisory Non-Fatal Errors
PCI: Fix 32-bit config write in Intel PCH Root Port MPC ACS quirk
PCI: dwc: Handle return value from endpoint .pre_init callback
PCI: dwc: Handle return value from endpoint .init callback
PCI: dwc: Add PCI ID for LECARC PCIe PMU
PCI/ASPM: Mask ASPM states based on Devicetree properties
PCI/ASPM: Disable/restore ASPM on every function for multi-function devices
Documentation: PCI: Document how to write PCI Host Controller drivers
PCI/ASPM: Use pcie_capability_clear_and_set_word() for ASPM disable/restore
PCI: Add support for PCIe WAKE# interrupt
PCI: Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
dt-bindings: PCI: Correct white-space style
PCI/ASPM: Avoid L0s for Realtek RTS525A
PCI: ultrarisc: Use module_platform_driver()
PCI: ultrarisc: Get and enable DP1000 PCIe controller clocks
dt-bindings: PCI: ultrarisc: Add required DP1000 PCIe clocks
...
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley
- Add initial definitions and discovery for the Smcsrind, Sscsrind,
Smcntrpmf, Ssccfg, Smcdeleg, Zicclsm, Ziccamoa, Ziccif, Ziccrse,
Za64rs, and Ssqosid RISC-V ISA extensions
- Improve the RISC-V update_mmu_cache_range() implementation by using
flush-by-ASID, enabling performance improvements on
microarchitectures that support related optimizations; and by taking
advantage of the Svinval RISC-V ISA extension on microarchitectures
that support it
- Shrink CFI shadow stack allocation further (to 512MB) to save virtual
address space (and physical memory on systems with strict overcommit
policies)
- Add initial CPU context switch support for QoS tagging (Ssqosid)
- Change our vector misaligned access speed test code to be
synchronous, avoiding a bunch of bugs related to unnecessary
asynchronicity
- Enable ARCH_HAS_ACPI_TABLE_UPGRADE for RISC-V to help with ACPI table
debugging (similar to ARM64 and x86)
- Extract vDSO section offsets at build time, rather than run time, to
avoid the boot time overhead
- Use assembler directives to control the use of instructions from the
RISC-V ISA extensions Zacas and Zabha, rather than compiler -march
flags that could affect the whole kernel (similar to ARM64)
- Add a kselftest for kprobes support for the c.jal instruction on
RISC-V
- When UEFI runtime services are available, use them to restart and
power off
- Fix ARCH_HAS_ACPI_TABLE_UPGRADE for RISC-V by adding a missing
include file to the ACPI code
- Move contiguous DMA memory reservation later in the boot, to ensure
that the correct global and per-node pools are allocated when
CONFIG_CMA_SIZE_PERNUMA is enabled
- Disallow probes on breakpoint handlers to avoid recursing
indefinitely into do_trap_break()
- Patch the compat vDSO during runtime alternatives processing, not
only the standard vDSO
- Remove some leftover XIP support elements missed by commit
9b3a2be84803 ("riscv: Remove support for XIP kernel")
- Fix broadcast timer switching in ACPI LPI power states by
implementing a RISC-V version of arch_get_idle_state_flags()
- Miscellaneous fixes, including: vDSO makefile simplification; marking
our default_power_off() as __noreturn; error path fixes in the PMU
SBI perf driver; RISC-V extension capitalization consistency; the use
of BIT() macros in one of our include files; and some documentation
fixes
* tag 'riscv-for-linus-7.3-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (39 commits)
RISC-V: hwprobe: Use BIT macro to avoid warnings
riscv: alternative: Also patch the compat vDSO
riscv: alternative: Use the statically extracted vDSO section offsets
riscv: vdso: Add symbols for the alternative section boundaries
riscv: Add Ziccamoa, Ziccif, Ziccrse, and Za64rs to cpufeature and hwprobe
riscv: Add Zicclsm to cpufeature and hwprobe
riscv: cpufeature: Clarify ISA spec version for canonical order
riscv: Standardize extension capitalization
riscv: kprobes: Prevent probes in breakpoint handlers
riscv: cmpxchg: Use .option arch for Zacas and Zabha
riscv: acpi: Handle LPI architectural context loss flags
riscv: further remove XIP
riscv: Add support for srmcfg CSR from Ssqosid extension
riscv: Detect the Ssqosid extension
dt-bindings: riscv: Add Ssqosid extension description
dt-bindings: riscv: add Counter delegation ISA extensions description
RISC-V: Add Ssccfg/Smcdeleg ISA extension definition and parsing
RISC-V: Add Ssccfg extension CSR definition
dt-bindings: riscv: add Smcntrpmf ISA extension description
RISC-V: Add Smcntrpmf extension parsing
...
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git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
"ARM SMMUv2:
- Device-tree binding updates for Qualcomm Eliza, Maili, Shikra and
IPQ9650 SoCs
- Add support for Qualcomm SM8450
- Numerous fixes for lifetime and ordering issues found by Sashiko in
the Qualcomm driver
ARM SMMUv3:
- Fix interrupt type in device-tree binding example for NVIDIA CMDQV
- Numerous fixes for issues identified by Sashiko in the NVIDIA CMDQV
driver
- Work around TLB erratum T264-SMMU-3 on Tegra264 by repeating the
invalidation sequence
- Add support for HAFT (hardware access flag in table entries) when
using SVA
- Probe for 52-bit addressing with a page size smaller than 64k
('DS') but don't do anything with it for now
- Minor driver improvements (remove sort_nonatomic(), use
readl_relaxed_poll_timeout_atomic(), fix IOPF teardown ordering)
Intel VT-d:
- Consolidation of complex enablement logic into a clean,
priority-based state machine
- Support for the DMA_REMAP_OPT_OUT flag from the VT-d v5.2
specification
- An update to cache_tag_flush_devtlb_psi() to use full-range
constants instead of modifying shared variables for
CACHE_TAG_NESTING_DEVTLB
- A fix for the UCTP context-table slot when copying root entries
- Fixes for several pre-existing issues reported by Sashiko
- General code cleanup and refinement
AMD IOMMU:
- Add SNP page-mode-0 support, enabling passthrough, v2 DMA page
tables and host SVA on supporting systems
- Fix invalid PPR handling, COMPLETE_PPR responses and guest-mode
reporting
- Improve Southbridge IOAPIC validation and remove the dependency on
hard-coded device IDs
- Fix PCI-device lifetime, debugfs and diagnostic issues
IOMMU core and IOMMUFD:
- Restore serialization of the shared MSI-page list
- Fix SVA-handle publication and several IOMMUFD reference and error
path leaks
- Return the expected zero result for invalid generic page-table
translations
- Allocate per-CPU IOVA magazines lazily to reduce memory use on
large systems
PCI ATS:
- Make VF support checks account for the associated PF and validate
that VF and PF Smallest Translation Unit settings agree
Platform drivers:
- Fix Qualcomm runtime-PM, probe unwind, fault reporting and page
table initialization races
- Rework Rockchip state handling and fix clock, probe and stale-fault
handling
- Fix smaller issues in the MSM and MediaTek drivers
Device-tree bindings:
- Add new Qualcomm SMMU compatibles, convert the OMAP IOMMU binding
to YAML, and fix the Tegra264 CMDQV interrupt example
Various smaller cleanups, documentation fixes and a Rust IOMMU
safety/readability improvement"
* tag 'iommu-updates-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (93 commits)
iommu/amd: Add SNP page mode 0 support
iommu/amd: Fix GN bit setting in COMPLETE_PPR_REQUEST command
iommu/amd: Rate limit INVALID_PPR_REQUEST error logging
iommu/amd: Fix missing CMD_COMPLETE_PPR response for invalid PPR requests
iommu/amd: Introduce PPR_TAG_LAST_PAGE() macro
iommu/amd: Fix incorrect device ID in invalid PASID error message
iommu/vt-d: Flush context cache with correct SID when tearing down aliases
iommu/vt-d: Tear down scalable-mode context on probe failure
iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
iommu/vt-d: Clear Present bit before tearing down copied context entry
iommu/vt-d: Fix copied_tables bitmap leak on error in copy_translation_tables
iommu/vt-d: Cache max domain ID to avoid redundant calculation
iommu/vt-d: Support the new DMA_REMAP_OPT_OUT flag bit
iommu/vt-d: Remove dmar_disabled
iommu/vt-d: Remove the 'force_on' variable
iommu/vt-d: Call dmar_can_force_on() for tboot opt-in
iommu/vt-d: Use dmar_can_force_on() for platform opt-in
iommu/vt-d: Consolidate dmar policy management and force_on logic
iommu/vt-d: Remove dead code when CONFIG_INTEL_IOMMU is not set
iommu/vt-d: Force requesting ACS when tboot is enabled
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Borislav Petkov:
- The usual pile of smallish cleanups and fixlets all over the place
* tag 'x86_cleanups_for_v7.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Remove unnecessary __maybe_unused annotations
x86/msr: Document the I/O-like write semantics in the msr driver
x86/apic: Ensure ICR register write value is handled as 32 bits
x86/boot/compressed/head_64.S: Clean up SEV-related comments
Documentation/arch/x86/amd-memory-encryption.rst: Fix typo
x86/platform/quark: Fix kernel-doc warnings in imr.c
x86/ras: Move contents from arch/x86/ras/Kconfig into drivers/ras/Kconfig
x86/cpu: Move intel_get_platform_id() to cpu/intel.c
x86/mm: Fix typo in comment
x86/fpu: Fix kernel-doc formatting above fpu_enable_guest_xfd_features()
x86/cfi: Use symmetric SYM_START and SYM_END in __CFI_TYPE()
x86/cfi: Add __init_or_module annotations for fineibt
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Dave Hansen:
"Just adding some documentation and removing a super stale comment
about an LED driver that was moved long ago:
- Document the intricacies of GS context switching
- Remove old TODO message about Geode LED driver"
* tag 'x86_misc_for_7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/geode: Remove old TODO message about leds-net5501.c
Documentation/x86: Document the intricacies of GS context switching
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 documentation updates from Ingo Molnar:
- Misc x86 documentation updates (Randy Dunlap, Daniel Gibson)
* tag 'x86-documentation-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/arch/x86/amd-debugging: Add example for reset register
x86/intel/quark: Clean up function kernel-doc
x86/speculation: Drop Excess function parameter descriptions
x86/lib: checksum_64.h: Eliminate all kernel-doc warnings
x86/barrier: Use correct parameter names in kernel-doc
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a reasonable amount of stuff here, including a bunch of
updates to the perf PMU drivers and some MPAM updates to expose the
memory bandwidth counters via resctrl.
On the architecture side, some highlights include support for BBML3
and steps towards support for an architectural NMI solution, all
wrapped up in a web of fixes for latent issues identified by Sashiko.
ACPI:
- Combine reads of AMU counters into a single FFH feedback counter op
Confidential computing:
- Fix smp_processor_id() in preemptible context when retrieving an
attestation token inside a realm
- Convert pKVM over to a "CC platform"
- Clean-up our SWIOTLB configuration in preparation for reworking the
handling of encrypted/decryped DMA buffers in the dma-mapping tree
CPU errata handling:
- Work around broken device memory ordering on NVIDIA Olympus cores
- Fix broken 'nospectre_bhb' command-line option
- Select the idle loop backend instruction on the command-line
CPU features:
- Replace our BBML2-noabort feature with the new architectural BBML3
feature
- Disable in-kernel BTI for recent versions of Clang due to issues
with livepatch that are still being investigated
- Clean-up documentation describing which ID register fields are
exposed to userspace
Interrupts:
- Preliminary work towards supporting FEAT_NMI, which cleans up our
IRQ entry code and fixes some latent issues with pseudo-NMI
- Support for an SDEI backend to trigger an NMI backtrace
Memory management:
- Treat all devices as coherent when CLIDR_EL1.LoC == 0
- Fix no-map handling of sub-page-sized regions
- Second attempt at unmapping the linear aliases of the kernel data
and bss sections
- Fix EFI runtime calls when software-PAN is enabled
Miscellaneous:
- Add Mark Rutland as a reviewer!
- Tidy-up our futex cmpxchg logic when using the new LSUI
instructions
- Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when
selecting HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
- Fix a false-positive KCSCAN splat in the delay loop
- Use a portable typedef for 128-bit scalar types in our UAPI headers
- Non-critical fixes for Sashiko reports all over
MPAM:
- Hook MPAM memory bandwidth counters into resctrl's counter
assignment interface
- Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that
it also applies to 63 bit counters
Perf:
- Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and
CPU PMU (NVIDIA Olympus again!)
- Add support for the DDR PMU on Marvell CN20K SoCs
- Add support for Picoheart implementations of the DCW PCIe PMU
- Add support for Channel/Rank/Bank filtering in the CXL PMU driver
- Add support for 64-bit counters in the CSPMU device
- Add support for revision 2 of the CMN S3 PMU
Ptrace:
- Fix a decade-old bug in our handling of seccomp and tracing on
syscall entry
- Fix regset handling for inactive SVE and SSVE registers
Selftests
- Add some tests for the decade-old bug that we just tried to fix in
our syscall entry path
- Fix SVE test crash on SME-only CPUs"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (95 commits)
arm64/efi: Avoid voluntary preemption with efi_mm installed
arm64: bti: Disable in-kernel BTI with recent versions of Clang
arm64: entry: Avoid unnecessary local_irq_disable() on kernel exit
irqchip/gic-v3: make the unmasking of pseudo-NMIs explicit when handling IRQs
arm64: Disable KCSAN instrumentation in delay.o
arm_mpam: Disable driver unbind to avoid UAF
arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt
perf: arm_pmuv3: Zero initialize hw_id branch stack field
arm64: mm: Unmap kernel data/bss entirely from the linear map
iommu/arm-smmu-v3-sva: Use system_supports_bbml3() to detect CPU feature
perf/arm-cmn: Support CMN S3 r2
perf/arm-cmn: Plumb in new filter types
perf/arm-cmn: Refactor event filter data
perf/arm-cmn: Refactor event filter programming
perf/arm-cmn: Rename filter variables for clarity
arm64: mm: fix accidental linear mapping of no-map reserved memory
tools: Ensure tools copy of linux/filter.h exports the UAPI
kselftest/arm64: Fix abi test compilation errors
arch: arm64: add early_param idle=<wfi|yield|nop>
arm64: entry: mask DAIF before returning from C EL1 handlers
...
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* for-next/mpam:
arm_mpam: Disable driver unbind to avoid UAF
arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt
arm_mpam: Apply T241-MPAM-6 to 63-bit counters
arm64: mpam: Add memory bandwidth usage (MBWU) documentation
arm_mpam: resctrl: Add resctrl_arch_cntr_read() & resctrl_arch_reset_cntr()
arm_mpam: resctrl: Add resctrl_arch_config_cntr() for ABMC use
arm_mpam: resctrl: Pre-allocate assignable monitors
arm_mpam: resctrl: Pick classes for use as MBM counters
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* for-next/errata:
arch: arm64: add early_param idle=<wfi|yield|nop>
arm64: proton-pack: Restore the nospectre_bhb command-line option
arm64: errata: work around NVIDIA Olympus device store/load ordering
arm64: Clarify ARM64_WORKAROUND_REPEAT_TLBI semantics
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'qualcomm/msm', 'rockchip', 'ti/omap', 'riscv', 'intel/vt-d', 'amd/amd-vi', 'core' and 'typos' into next
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Add Ziccamoa, Ziccif, and Za64rs to riscv_isa_ext[] so they can be
parsed from devicetree/ACPI ISA strings. Ziccrse is already present
in cpufeature; this patch only adds its hwprobe exposure.
Expose all four extensions via hwprobe through new bits in
RISCV_HWPROBE_KEY_IMA_EXT_1 (RISCV_HWPROBE_EXT_ZICCAMOA, _ZICCIF,
_ZICCRSE, _ZA64RS), so userspace can probe each of these
RVA23U64-mandatory extensions individually.
Reviewed-by: Jesse Taube <jtaubepe@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
Signed-off-by: Guodong Xu <docular.xu@gmail.com>
Link: https://patch.msgid.link/20260701-rva23u64-hwprobe-v2-v5-6-2c61f94a695a@gmail.com
[pjw@kernel.org: updated to apply]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Zicclsm requires misaligned support for all regular load and store
instructions, both scalar and vector, but not AMOs or other
specialized forms of memory access, to main memory regions with both
the cacheability and coherence PMAs, as defined in the profiles spec.
Even though mandated, misaligned loads and stores might execute
extremely slowly. Standard software distributions should assume their
existence only for correctness, not for performance.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Jesse Taube <jesse@rivosinc.com>
[andrew.jones: Rebased, rewrote doc text, minor commit message revisions]
Signed-off-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
Signed-off-by: Guodong Xu <docular.xu@gmail.com>
Link: https://patch.msgid.link/20260701-rva23u64-hwprobe-v2-v5-5-2c61f94a695a@gmail.com
[pjw@kernel.org: updated to apply; added Andrew's username to his tag comments]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Add below cpus to the midr list, which supports
BBML2_NOABORT.
Cortex A520(AE)
Cortex A715
Cortex A720(AE)
Cortex A725
Neoverse N3
C1-Nano
C1-Pro
C1-Ultra
C1-Premium
C1-Ultra and C1-Premium both suffer from erratum 3683289,
where Break-Before-Make must be followed to avoid a livelock.
For both CPUs, the erratum is fixed from r1p1.
Hence we do not enable BBML2_NOABORT for CPU revisions <= r1p0.
The relevant SDENs are:
* C1-Ultra: https://developer.arm.com/documentation/111077/9-00/
* C1-Premium: https://developer.arm.com/documentation/111078/9-00/
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Linu Cherian <linu.cherian@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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The amd debugging documentation didn't state how to identify kernel log lines
with information from the reset register about the cause of a previous random
reboot.
Add an example.
Suggested-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Daniel Gibson <daniel@gibson.sh>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260624124326.746525-2-daniel@gibson.sh
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