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| author |   Dongjiu Geng <gengdongjiu@huawei.com> | 2017-12-13 18:13:56 +0800 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2018-01-05 11:29:48 +0000 |
| commit | 3b3b681097fae73b7f5dcdd42db6cfdf32943d4c (patch) | |
| tree | 514122d4fd4358c7dfda62c2294ad31215e0aed6 /arch/arm64/include/uapi/asm/hwcap.h | |
| parent | arm64: asid: Do not replace active_asids if already 0 (diff) | |
| download | linux-dev-3b3b681097fae73b7f5dcdd42db6cfdf32943d4c.tar.xz linux-dev-3b3b681097fae73b7f5dcdd42db6cfdf32943d4c.zip | |
arm64: v8.4: Support for new floating point multiplication instructions
ARM v8.4 extensions add new neon instructions for performing a
multiplication of each FP16 element of one vector with the corresponding
FP16 element of a second vector, and to add or subtract this without an
intermediate rounding to the corresponding FP32 element in a third vector.
This patch detects this feature and let the userspace know about it via a
HWCAP bit and MRS emulation.
Cc: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/uapi/asm/hwcap.h')
| -rw-r--r-- | arch/arm64/include/uapi/asm/hwcap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h index cda76fa8b9b2..f018c3deea3b 100644 --- a/arch/arm64/include/uapi/asm/hwcap.h +++ b/arch/arm64/include/uapi/asm/hwcap.h @@ -43,5 +43,6 @@ #define HWCAP_ASIMDDP (1 << 20) #define HWCAP_SHA512 (1 << 21) #define HWCAP_SVE (1 << 22) +#define HWCAP_ASIMDFHM (1 << 23) #endif /* _UAPI__ASM_HWCAP_H */ |