Gentle ping inf case of forgotten. > 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. > > Patch Sequences > ================ > > Patch #1 adds cpufeature FEAT_MTE_TAGGED_FAR > > Patch #2 adds MTE_FAR hwcaps and export address tag when it supports > > Patch #3 adds mtefar hwcap test > > Patch #4 prepares to add mtefar testcase > > Patch #5 refactor check_mmap_option with loop to add mtefar testcase > > Patch #6 adds mtefar test cases corresponding to > each testcase of check_mmap_options > > Patch History > ================ > v3 to v4: > - fix hwcap string for FEAT_MTE_TAGGED_FAR > - split cpufeature and hwcap modification and merge hwcap's > modification with exporting address tag patch > - add mtefar testcase on check_mmap_options > - https://lore.kernel.org/all/20250410074721.947380-1-yeoreum.yun@xxxxxxx/ > > v2 to v3: > - Rebase to 6.15-rc1 > - https://lore.kernel.org/all/20250403172758.67106-1-yeoreum.yun@xxxxxxx/ > > v1 to v2: > - add hwcap test for MTE_FAR feature. > - add MTE_FAR doc into elf_hwcap.rst > - https://lore.kernel.org/all/20250403142707.26397-1-yeoreum.yun@xxxxxxx/ > > > Yeoreum Yun (6): > arm64/cpufeature: add FEAT_MTE_TAGGED_FAR feature > arm64: report address tag when FEAT_MTE_TAGGED_FAR is supported > tools/kselftest: add MTE_FAR hwcap test > kselftest/arm64/mte: preparation for mtefar test > kselftest/arm64/mte: refactor check_mmap_option test > kselftest/arm64/mte: add mtefar test on check_mmap_option > > Documentation/arch/arm64/elf_hwcaps.rst | 3 + > 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 + > tools/testing/selftests/arm64/abi/hwcap.c | 6 + > .../selftests/arm64/mte/check_buffer_fill.c | 2 +- > .../selftests/arm64/mte/check_child_memory.c | 4 +- > .../arm64/mte/check_hugetlb_options.c | 4 +- > .../selftests/arm64/mte/check_ksm_options.c | 4 +- > .../selftests/arm64/mte/check_mmap_options.c | 244 +++++++++++++----- > .../arm64/mte/check_tags_inclusion.c | 2 +- > .../selftests/arm64/mte/check_user_mem.c | 2 +- > .../selftests/arm64/mte/mte_common_util.c | 70 ++++- > .../selftests/arm64/mte/mte_common_util.h | 8 +- > tools/testing/selftests/arm64/mte/mte_def.h | 8 + > 19 files changed, 291 insertions(+), 97 deletions(-) > > -- > LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7} > -- Sincerely, Yeoreum Yun
