linux-rng/drivers/firmware, branch master

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2025-12-03T01:03:55Z

Pull arm64 updates from Catalin Marinas: "These are the arm64 updates for 6.19. The biggest part is the Arm MPAM driver under drivers/resctrl/. There's a patch touching mm/ to handle spurious faults for huge pmd (similar to the pte version). The corresponding arm64 part allows us to avoid the TLB maintenance if a (huge) page is reused after a write fault. There's EFI refactoring to allow runtime services with preemption enabled and the rest is the usual perf/PMU updates and several cleanups/typos. Summary: Core features: - Basic Arm MPAM (Memory system resource Partitioning And Monitoring) driver under drivers/resctrl/ which makes use of the fs/rectrl/ API Perf and PMU: - Avoid cycle counter on multi-threaded CPUs - Extend CSPMU device probing and add additional filtering support for NVIDIA implementations - Add support for the PMUs on the NoC S3 interconnect - Add additional compatible strings for new Cortex and C1 CPUs - Add support for data source filtering to the SPE driver - Add support for i.MX8QM and "DB" PMU in the imx PMU driver Memory managemennt: - Avoid broadcast TLBI if page reused in write fault - Elide TLB invalidation if the old PTE was not valid - Drop redundant cpu_set_*_tcr_t0sz() macros - Propagate pgtable_alloc() errors outside of __create_pgd_mapping() - Propagate return value from __change_memory_common() ACPI and EFI: - Call EFI runtime services without disabling preemption - Remove unused ACPI function Miscellaneous: - ptrace support to disable streaming on SME-only systems - Improve sysreg generation to include a 'Prefix' descriptor - Replace __ASSEMBLY__ with __ASSEMBLER__ - Align register dumps in the kselftest zt-test - Remove some no longer used macros/functions - Various spelling corrections" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (94 commits) arm64/mm: Document why linear map split failure upon vm_reset_perms is not problematic arm64/pageattr: Propagate return value from __change_memory_common arm64/sysreg: Remove unused define ARM64_FEATURE_FIELD_BITS KVM: arm64: selftests: Consider all 7 possible levels of cache KVM: arm64: selftests: Remove ARM64_FEATURE_FIELD_BITS and its last user arm64: atomics: lse: Remove unused parameters from ATOMIC_FETCH_OP_AND macros Documentation/arm64: Fix the typo of register names ACPI: GTDT: Get rid of acpi_arch_timer_mem_init() perf: arm_spe: Add support for filtering on data source perf: Add perf_event_attr::config4 perf/imx_ddr: Add support for PMU in DB (system interconnects) perf/imx_ddr: Get and enable optional clks perf/imx_ddr: Move ida_alloc() from ddr_perf_init() to ddr_perf_probe() dt-bindings: perf: fsl-imx-ddr: Add compatible string for i.MX8QM, i.MX8QXP and i.MX8DXL arm64: remove duplicate ARCH_HAS_MEM_ENCRYPT arm64: mm: use untagged address to calculate page index MAINTAINERS: new entry for MPAM Driver arm_mpam: Add kunit tests for props_mismatch() arm_mpam: Add kunit test for bitmap reset arm_mpam: Add helper to reset saved mbwu state ...

Merge tag 'x86_mm_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-12-02T21:32:52Z

Pull x86 mm updates from Borislav Petkov: - Use the proper accessors when reading CR3 as part of the page level transitions (5-level to 4-level, the use case being kexec) so that only the physical address in CR3 is picked up and not flags which are above the physical mask shift - Clean up and unify __phys_addr_symbol() definitions * tag 'x86_mm_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/libstub: Fix page table access in 5-level to 4-level paging transition x86/boot: Fix page table access in 5-level to 4-level paging transition x86/mm: Unify __phys_addr_symbol()

Merge tag 'vfs-6.19-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2025-12-01T16:44:26Z

Pull misc vfs updates from Christian Brauner: "Features: - Cheaper MAY_EXEC handling for path lookup. This elides MAY_WRITE permission checks during path lookup and adds the IOP_FASTPERM_MAY_EXEC flag so filesystems like btrfs can avoid expensive permission work. - Hide dentry_cache behind runtime const machinery. - Add German Maglione as virtiofs co-maintainer. Cleanups: - Tidy up and inline step_into() and walk_component() for improved code generation. - Re-enable IOCB_NOWAIT writes to files. This refactors file timestamp update logic, fixing a layering bypass in btrfs when updating timestamps on device files and improving FMODE_NOCMTIME handling in VFS now that nfsd started using it. - Path lookup optimizations extracting slowpaths into dedicated routines and adding branch prediction hints for mntput_no_expire(), fd_install(), lookup_slow(), and various other hot paths. - Enable clang's -fms-extensions flag, requiring a JFS rename to avoid conflicts. - Remove spurious exports in fs/file_attr.c. - Stop duplicating union pipe_index declaration. This depends on the shared kbuild branch that brings in -fms-extensions support which is merged into this branch. - Use MD5 library instead of crypto_shash in ecryptfs. - Use largest_zero_folio() in iomap_dio_zero(). - Replace simple_strtol/strtoul with kstrtoint/kstrtouint in init and initrd code. - Various typo fixes. Fixes: - Fix emergency sync for btrfs. Btrfs requires an explicit sync_fs() call with wait == 1 to commit super blocks. The emergency sync path never passed this, leaving btrfs data uncommitted during emergency sync. - Use local kmap in watch_queue's post_one_notification(). - Add hint prints in sb_set_blocksize() for LBS dependency on THP" * tag 'vfs-6.19-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (35 commits) MAINTAINERS: add German Maglione as virtiofs co-maintainer fs: inline step_into() and walk_component() fs: tidy up step_into() & friends before inlining orangefs: use inode_update_timestamps directly btrfs: fix the comment on btrfs_update_time btrfs: use vfs_utimes to update file timestamps fs: export vfs_utimes fs: lift the FMODE_NOCMTIME check into file_update_time_flags fs: refactor file timestamp update logic include/linux/fs.h: trivial fix: regualr -> regular fs/splice.c: trivial fix: pipes -> pipe's fs: mark lookup_slow() as noinline fs: add predicts based on nd->depth fs: move mntput_no_expire() slowpath into a dedicated routine fs: remove spurious exports in fs/file_attr.c watch_queue: Use local kmap in post_one_notification() fs: touch up predicts in path lookup fs: move fd_install() slowpath into a dedicated routine and provide commentary fs: hide dentry_cache behind runtime const machinery fs: touch predicts in do_dentry_open() ...

efi/runtime-wrappers: Keep track of the efi_runtime_lock owner

2025-11-11T18:59:22Z

The EFI runtime wrappers use a file local semaphore to serialize access to the EFI runtime services. This means that any calls to the arch wrappers around the runtime services will also be serialized, removing the need for redundant locking. For robustness, add a facility that allows those arch wrappers to assert that the semaphore was taken by the current task. Signed-off-by: Ard Biesheuvel Acked-by: Catalin Marinas Signed-off-by: Catalin Marinas

efi: Add missing static initializer for efi_mm::cpus_allowed_lock

2025-11-11T18:59:22Z

Initialize the cpus_allowed_lock struct member of efi_mm. Cc: stable@vger.kernel.org Signed-off-by: Ard Biesheuvel Acked-by: Catalin Marinas Signed-off-by: Catalin Marinas

Merge patch "kbuild: Add '-fms-extensions' to areas with dedicated CFLAGS"

2025-11-10T09:38:07Z

Nathan Chancellor says: Shared branch between Kbuild and other trees for enabling '-fms-extensions' for 6.19. * tag 'kbuild-ms-extensions-6.19' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: kbuild: Add '-fms-extensions' to areas with dedicated CFLAGS Kbuild: enable -fms-extensions jfs: Rename _inline to avoid conflict with clang's '-fms-extensions' Link: https://patch.msgid.link/20251101-kbuild-ms-extensions-dedicated-cflags-v1-1-38004aba524b@kernel.org Signed-off-by: Christian Brauner

efi/libstub: Fix page table access in 5-level to 4-level paging transition

2025-11-05T16:31:32Z

When transitioning from 5-level to 4-level paging, the existing code incorrectly accesses page table entries by directly dereferencing CR3 and applying PAGE_MASK. This approach has several issues: - __native_read_cr3() returns the raw CR3 register value, which on x86_64 includes not just the physical address but also flags Bits above the physical address width of the system (i.e. above __PHYSICAL_MASK_SHIFT) are also not masked. - The pgd value is masked by PAGE_SIZE which doesn't take into account the higher bits such as _PAGE_BIT_NOPTISHADOW. Replace this with proper accessor functions: - native_read_cr3_pa(): Uses CR3_ADDR_MASK to additionally mask metadata out of CR3 (like SME or LAM bits). All remaining bits are real address bits or reserved and must be 0. - mask pgd value with PTE_PFN_MASK instead of PAGE_MASK, accounting for flags above bit 51 (_PAGE_BIT_NOPTISHADOW in particular). Bits below 51, but above the max physical address are reserved and must be 0. Fixes: cb1c9e02b0c1 ("x86/efistub: Perform 4/5 level paging switch from the stub") Reported-by: Michael van der Westhuizen Reported-by: Tobias Fleig Co-developed-by: Kiryl Shutsemau Signed-off-by: Kiryl Shutsemau Signed-off-by: Usama Arif Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Ard Biesheuvel Link: https://patch.msgid.link/20251103141002.2280812-3-usamaarif642@gmail.com

firmware: stratix10-svc: fix bug in saving controller data

2025-11-03T12:24:19Z

Fix the incorrect usage of platform_set_drvdata and dev_set_drvdata. They both are of the same data and overrides each other. This resulted in the rmmod of the svc driver to fail and throw a kernel panic for kthread_stop and fifo free. Fixes: b5dc75c915cd ("firmware: stratix10-svc: extend svc to support new RSU features") Cc: stable@vger.kernel.org # 6.6+ Signed-off-by: Ang Tien Sung Signed-off-by: Khairul Anuar Romli Signed-off-by: Dinh Nguyen

kbuild: Add '-fms-extensions' to areas with dedicated CFLAGS

2025-10-31T01:26:28Z

This is a follow up to commit c4781dc3d1cf ("Kbuild: enable -fms-extensions") but in a separate change due to being substantially different from the initial submission. There are many places within the kernel that use their own CFLAGS instead of the main KBUILD_CFLAGS, meaning code written with the main kernel's use of '-fms-extensions' in mind that may be tangentially included in these areas will result in "error: declaration does not declare anything" messages from the compiler. Add '-fms-extensions' to all these areas to ensure consistency, along with -Wno-microsoft-anon-tag to silence clang's warning about use of the extension that the kernel cares about using. parisc does not build with clang so it does not need this warning flag. LoongArch does not need it either because -W flags from KBUILD_FLAGS are pulled into cflags-vdso. Reported-by: Christian Brauner Closes: https://lore.kernel.org/20251030-meerjungfrau-getrocknet-7b46eacc215d@brauner/ Reviewed-by: Christian Brauner Acked-by: Ard Biesheuvel Signed-off-by: Nathan Chancellor

Merge tag 'scmi-fixes-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

2025-10-23T20:30:01Z

Arm SCMI fixes for v6.18 This series contains a set of small, focused fixes that address robustness and lifecycle issues in the Arm SCMI core and debug support, ensuring safer handling of debug initialization failures, correct flag management in raw mode, and consistent inflight counter tracking. Brief summary: - Fix raw xfer flag clearing - Skip RAW debug initialization on failure - Make inflight counter helpers null-safe, preventing crashes if debug initialization fails - Account for failed debug initialization globally There is no functional change for standard SCMI operation, but these fixes improve stability in debug and raw modes, particularly in error paths. * tag 'scmi-fixes-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_scmi: Fix premature SCMI_XFER_FLAG_IS_RAW clearing in raw mode firmware: arm_scmi: Skip RAW initialization on failure include: trace: Fix inflight count helper on failed initialization firmware: arm_scmi: Account for failed debug initialization Signed-off-by: Arnd Bergmann