diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-10-17 13:42:25 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-10-19 10:56:20 +0100 |
| commit | fee29f008aa3f2aff01117f28b57b1145d92cb9b (patch) | |
| tree | c8e8ea36d8cb73ced0b6557d7e862cf9571408bb /arch/arm64/include/asm/hwcap.h | |
| parent | ae976f063b605dd558571eff40c8229ffbc39e24 (diff) | |
| download | linux-fee29f008aa3f2aff01117f28b57b1145d92cb9b.tar.bz2 | |
arm64: Add HWCAP for self-synchronising virtual counter
Since userspace can make use of the CNTVSS_EL0 instruction, expose
it via a HWCAP.
Suggested-by: Will Deacon <will@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211017124225.3018098-18-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/hwcap.h')
| -rw-r--r-- | arch/arm64/include/asm/hwcap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 8c129db8232a..b100e0055eab 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -105,6 +105,7 @@ #define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) #define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) #define KERNEL_HWCAP_MTE __khwcap2_feature(MTE) +#define KERNEL_HWCAP_ECV __khwcap2_feature(ECV) /* * This yields a mask that user programs can use to figure out what |