From 3b3b681097fae73b7f5dcdd42db6cfdf32943d4c Mon Sep 17 00:00:00 2001 From: Dongjiu Geng Date: Wed, 13 Dec 2017 18:13:56 +0800 Subject: 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 Reviewed-by: Suzuki K Poulose Signed-off-by: Dongjiu Geng Reviewed-by: Dave Martin Signed-off-by: Catalin Marinas --- arch/arm64/include/uapi/asm/hwcap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm64/include/uapi/asm') 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 */ -- cgit v1.2.3