The FEAT_MTE_STORE_ONLY feature provides support for
tag check for store operation only. read operation is considered
as unchecked operation so it doesn't raise tag check fault.

NOTE:
  This patches based on https://lore.kernel.org/all/20250403141535.23496-1-yeoreum.yun@arm.com/

Yeoreum Yun (3):
  arm64/feature: add MTE_STORE_ONLY feature
  prtcl: introduce PR_MTE_STORE_ONLY
  arm64/kernel: support store-only mte tag check

 arch/arm64/include/asm/hwcap.h      |  1 +
 arch/arm64/include/asm/processor.h  |  2 ++
 arch/arm64/include/uapi/asm/hwcap.h |  1 +
 arch/arm64/kernel/cpufeature.c      |  9 +++++++++
 arch/arm64/kernel/cpuinfo.c         |  1 +
 arch/arm64/kernel/mte.c             | 11 ++++++++++-
 arch/arm64/kernel/process.c         |  6 +++++-
 arch/arm64/tools/cpucaps            |  1 +
 include/uapi/linux/prctl.h          |  2 ++
 9 files changed, 32 insertions(+), 2 deletions(-)

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