[PATCH v2 0/6] arm64: Fix instrumentation escapes from noinstr path

[Jisheng Zhang]

Code marked with noinstr can only safely call other noinstr or
__always_inline functions. When reading arm64 source code, I found
necessary noinstr markers is missing somewhere. So I asked AI to scan
the arm64, this series is the result.

Since v1:
  Mainly address sashiko review comments:
  - add always inline to per cpu helpers
  - use tif_test_bit() instead of test_thread_flag() in sme_enter_from_user_mode
    and sme_exit_to_user_mode
  - a new patch to mark kasan_hw_tags_enabled always inlined
  - a new patch to Disable branch profiling for architecture library code

Jisheng Zhang (6):
  arm64: percpu: Always inline helpers used by noinstr code
  arm64: entry: Always inline helpers used by non-instrumentable paths
  kasan: Always inline kasan_hw_tags_enabled()
  arm64: stacktrace: Always inline internal stack boundary helpers
  arm64: lib: Disable branch profiling for architecture library code
  arm64: alternatives: Make branch and ADRP offset helpers noinst

 arch/arm64/include/asm/cpufeature.h        |  8 +--
 arch/arm64/include/asm/entry-common.h      |  2 +-
 arch/arm64/include/asm/fpsimd.h            |  8 +--
 arch/arm64/include/asm/mte-kasan.h         |  4 +-
 arch/arm64/include/asm/mte.h               | 10 ++--
 arch/arm64/include/asm/percpu.h            | 18 +++----
 arch/arm64/include/asm/stacktrace.h        | 16 +++---
 arch/arm64/include/asm/stacktrace/common.h | 12 ++---
 arch/arm64/lib/Makefile                    |  4 ++
 arch/arm64/lib/insn.c                      | 57 ++++++++++++++--------
 include/linux/kasan-enabled.h              |  4 +-
 11 files changed, 82 insertions(+), 61 deletions(-)

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2.55.0