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arm64/mte: Add hwcap for asymmetric mode

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Allow userspace to detect support for asymmetric mode by providing a hwcap
for it, using the official feature name FEAT_MTE3.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Vincenzo Frascino <Vincenzo.Frascino@arm.com>
Tested-by: Branislav Rankov <branislav.rankov@arm.com>
Link: https://lore.kernel.org/r/20220216173224.2342152-4-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown
2022-02-16 17:32:23 +00:00
committed by Will Deacon
parent cb627397e0
commit d082a0255f
5 changed files with 9 additions and 0 deletions
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1
arch/arm64/include/uapi/asm/hwcap.h
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@@ -78,5 +78,6 @@
#define HWCAP2_ECV (1 << 19)
#define HWCAP2_AFP (1 << 20)
#define HWCAP2_RPRES (1 << 21)
#define HWCAP2_MTE3 (1 << 22)
#endif /* _UAPI__ASM_HWCAP_H */