diff options
| author |   Andrew Murray <andrew.murray@arm.com> | 2019-04-09 10:52:43 +0100 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2019-04-16 16:27:56 +0100 |
| commit | 671db581815faf17cbedd7fcbc48823a247d90b1 (patch) | |
| tree | 97c4cc514b103a6eb301cbd34dcc735235401f23 /arch/arm64/include/uapi | |
| parent | arm64: Handle trapped DC CVADP (diff) | |
| download | linux-dev-671db581815faf17cbedd7fcbc48823a247d90b1.tar.xz linux-dev-671db581815faf17cbedd7fcbc48823a247d90b1.zip | |
arm64: Expose DC CVADP to userspace
ARMv8.5 builds upon the ARMv8.2 DC CVAP instruction by introducing a DC
CVADP instruction which cleans the data cache to the point of deep
persistence. Let's expose this support via the arm64 ELF hwcaps.
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/uapi')
| -rw-r--r-- | arch/arm64/include/uapi/asm/hwcap.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h index 453b45af80b7..d64af3913a9e 100644 --- a/arch/arm64/include/uapi/asm/hwcap.h +++ b/arch/arm64/include/uapi/asm/hwcap.h @@ -53,4 +53,9 @@ #define HWCAP_PACA (1 << 30) #define HWCAP_PACG (1UL << 31) +/* + * HWCAP2 flags - for AT_HWCAP2 + */ +#define HWCAP2_DCPODP (1 << 0) + #endif /* _UAPI__ASM_HWCAP_H */ |