Messages in this thread Patch in this message | | | From | Uros Bizjak <> | Subject | [PATCH] x86/cpu: Use XGETBV and XSETBV mnemonics in fpu/internal.h | Date | Tue, 7 Jul 2020 19:47:22 +0200 |
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Current minimum required version of binutils is 2.23, which supports XGETBV and XSETBV instruction mnemonics.
Replace the byte-wise specification of XGETBV and XSETBV with these proper mnemonics.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com> --- arch/x86/include/asm/fpu/internal.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 845e7481ab77..fbc7a333b28e 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -636,9 +636,7 @@ static inline u64 xgetbv(u32 index) { u32 eax, edx; - asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */ - : "=a" (eax), "=d" (edx) - : "c" (index)); + asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index)); return eax + ((u64)edx << 32); } @@ -647,8 +645,7 @@ static inline void xsetbv(u32 index, u64 value) u32 eax = value; u32 edx = value >> 32; - asm volatile(".byte 0x0f,0x01,0xd1" /* xsetbv */ - : : "a" (eax), "d" (edx), "c" (index)); + asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index)); } #endif /* _ASM_X86_FPU_INTERNAL_H */ -- 2.26.2
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