diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2020-07-07 19:47:22 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-08-18 15:49:07 +0200 |
| commit | 86109813990b5d6d6cfb8072382ee69d11ea9460 (patch) | |
| tree | 983585b94c5a12550941e6f265cb8fc867c52932 | |
| parent | bf9c912f9a649776c2d741310486a6984edaac72 (diff) | |
x86/cpu: Use XGETBV and XSETBV mnemonics in fpu/internal.h
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>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200707174722.58651-1-ubizjak@gmail.com
| -rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 0a460f2a3f90..21a8b5259477 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -602,9 +602,7 @@ 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); } @@ -613,8 +611,7 @@ 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 */ |