[PATCH 0/3] support FEAT_MTE_TAGGED_FAR feature

From: Yeoreum Yun
Date: Thu Apr 03 2025 - 10:22:08 EST


The FEAT_MTE_TAGGED_FAR feature provides support for
reporting all non-address bits during a synchronous MTE tag check fault.

This patchset extends the reporting tag to include
not only the memory tag (logical tag) but also the address tag via
si_addr when FEAT_MTE_TAGGED_FAR feature is supported.

Yeoreum Yun (3):
arm64: add FEAT_MTE_TAGGED_FAR feature
arm64/mm/fault: use original FAR_EL1 value when ARM64_MTE_FAR is
supported
Documentation/arm64: reflects FEAT_MTE_TAGGED_FAR description

Documentation/arch/arm64/tagged-pointers.rst | 11 ++++++-----
arch/arm64/include/asm/hwcap.h | 1 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/kernel/cpufeature.c | 9 +++++++++
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/mm/fault.c | 7 +++++--
arch/arm64/tools/cpucaps | 1 +
7 files changed, 24 insertions(+), 7 deletions(-)

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