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| author | 2025-07-29 20:21:54 -0700 | |
|---|---|---|
| committer | 2025-07-29 20:21:54 -0700 | |
| commit | 6fb44438a5e1897a72dd11139274735256be8069 (patch) | |
| tree | 15240dc024de7e564bf6dfc9a547eaf1e039e200 /tools/perf/scripts/python/futex-contention.py | |
| parent | Merge tag 'm68k-for-v6.17-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k (diff) | |
| parent | Merge branch 'for-next/feat_mte_store_only' into for-next/core (diff) | |
| download | wireguard-linux-6fb44438a5e1897a72dd11139274735256be8069.tar.xz wireguard-linux-6fb44438a5e1897a72dd11139274735256be8069.zip | |
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
 "A quick summary: perf support for Branch Record Buffer Extensions
  (BRBE), typical PMU hardware updates, small additions to MTE for
  store-only tag checking and exposing non-address bits to signal
  handlers, HAVE_LIVEPATCH enabled on arm64, VMAP_STACK forced on.
  There is also a TLBI optimisation on hardware that does not require
  break-before-make when changing the user PTEs between contiguous and
  non-contiguous.
  More details:
  Perf and PMU updates:
   - Add support for new (v3) Hisilicon SLLC and DDRC PMUs
   - Add support for Arm-NI PMU integrations that share interrupts
     between clock domains within a given instance
   - Allow SPE to be configured with a lower sample period than the
     minimum recommendation advertised by PMSIDR_EL1.Interval
   - Add suppport for Arm's "Branch Record Buffer Extension" (BRBE)
   - Adjust the perf watchdog period according to cpu frequency changes
   - Minor driver fixes and cleanups
  Hardware features:
   - Support for MTE store-only checking (FEAT_MTE_STORE_ONLY)
   - Support for reporting the non-address bits during a synchronous MTE
     tag check fault (FEAT_MTE_TAGGED_FAR)
   - Optimise the TLBI when folding/unfolding contiguous PTEs on
     hardware with FEAT_BBM (break-before-make) level 2 and no TLB
     conflict aborts
  Software features:
   - Enable HAVE_LIVEPATCH after implementing arch_stack_walk_reliable()
     and using the text-poke API for late module relocations
   - Force VMAP_STACK always on and change arm64_efi_rt_init() to use
     arch_alloc_vmap_stack() in order to avoid KASAN false positives
  ACPI:
   - Improve SPCR handling and messaging on systems lacking an SPCR
     table
  Debug:
   - Simplify the debug exception entry path
   - Drop redundant DBG_MDSCR_* macros
  Kselftests:
   - Cleanups and improvements for SME, SVE and FPSIMD tests
  Miscellaneous:
   - Optimise loop to reduce redundant operations in contpte_ptep_get()
   - Remove ISB when resetting POR_EL0 during signal handling
   - Mark the kernel as tainted on SEA and SError panic
   - Remove redundant gcs_free() call"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
  arm64/gcs: task_gcs_el0_enable() should use passed task
  arm64: Kconfig: Keep selects somewhat alphabetically ordered
  arm64: signal: Remove ISB when resetting POR_EL0
  kselftest/arm64: Handle attempts to disable SM on SME only systems
  kselftest/arm64: Fix SVE write data generation for SME only systems
  kselftest/arm64: Test SME on SME only systems in fp-ptrace
  kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace
  kselftest/arm64: Allow sve-ptrace to run on SME only systems
  arm64/mm: Drop redundant addr increment in set_huge_pte_at()
  kselftest/arm4: Provide local defines for AT_HWCAP3
  arm64: Mark kernel as tainted on SAE and SError panic
  arm64/gcs: Don't call gcs_free() when releasing task_struct
  drivers/perf: hisi: Support PMUs with no interrupt
  drivers/perf: hisi: Relax the event number check of v2 PMUs
  drivers/perf: hisi: Add support for HiSilicon SLLC v3 PMU driver
  drivers/perf: hisi: Use ACPI driver_data to retrieve SLLC PMU information
  drivers/perf: hisi: Add support for HiSilicon DDRC v3 PMU driver
  drivers/perf: hisi: Simplify the probe process for each DDRC version
  perf/arm-ni: Support sharing IRQs within an NI instance
  perf/arm-ni: Consolidate CPU affinity handling
  ...
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