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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-03-12 10:04:14 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-19 18:14:27 +0000 |
| commit | 7206dc93a58fb76421c4411eefa3c003337bcb2d (patch) | |
| tree | 9bf4f279e538a41472bf6f5e8e3088645c86f8b0 /arch/arm64/include/uapi/asm | |
| parent | 847ecd3fa311cde0f10a1b66c572abb136742b1d (diff) | |
| download | linux-7206dc93a58fb76421c4411eefa3c003337bcb2d.tar.gz linux-7206dc93a58fb76421c4411eefa3c003337bcb2d.tar.bz2 linux-7206dc93a58fb76421c4411eefa3c003337bcb2d.zip | |
arm64: Expose Arm v8.4 features
Expose the new features introduced by Arm v8.4 extensions to
Arm v8-A profile.
These include :
1) Data indpendent timing of instructions. (DIT, exposed as HWCAP_DIT)
2) Unaligned atomic instructions and Single-copy atomicity of loads
and stores. (AT, expose as HWCAP_USCAT)
3) LDAPR and STLR instructions with immediate offsets (extension to
LRCPC, exposed as HWCAP_ILRCPC)
4) Flag manipulation instructions (TS, exposed as HWCAP_FLAGM).
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/uapi/asm')
| -rw-r--r-- | arch/arm64/include/uapi/asm/hwcap.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h index f018c3deea3b..17c65c8f33cb 100644 --- a/arch/arm64/include/uapi/asm/hwcap.h +++ b/arch/arm64/include/uapi/asm/hwcap.h @@ -44,5 +44,9 @@ #define HWCAP_SHA512 (1 << 21) #define HWCAP_SVE (1 << 22) #define HWCAP_ASIMDFHM (1 << 23) +#define HWCAP_DIT (1 << 24) +#define HWCAP_USCAT (1 << 25) +#define HWCAP_ILRCPC (1 << 26) +#define HWCAP_FLAGM (1 << 27) #endif /* _UAPI__ASM_HWCAP_H */ |