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| author | Yeoreum Yun <yeoreum.yun@arm.com> | 2025-06-18 10:29:51 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2025-07-02 18:49:03 +0100 |
| commit | b1fabef37bd504f378a203fd8b9227b8fa65b193 (patch) | |
| tree | f46022d17238e5347f6d3ae94c6948e39f662bfa | |
| parent | 33e943a228535fe5eb64b746d2b7b6b187aaa77a (diff) | |
prctl: Introduce PR_MTE_STORE_ONLY
PR_MTE_STORE_ONLY is used to restrict the MTE tag check for store
opeartion only.
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250618092957.2069907-3-yeoreum.yun@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | include/uapi/linux/prctl.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index 43dec6eed559..f6fb137c407f 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -244,6 +244,8 @@ struct prctl_mm_map { # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) /* Unused; kept only for source compatibility */ # define PR_MTE_TCF_SHIFT 1 +/* MTE tag check store only */ +# define PR_MTE_STORE_ONLY (1UL << 19) /* RISC-V pointer masking tag length */ # define PR_PMLEN_SHIFT 24 # define PR_PMLEN_MASK (0x7fUL << PR_PMLEN_SHIFT) |