diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2025-06-16 10:30:41 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-08-22 13:52:21 +0200 |
| commit | d20a5d96eddb95b4faa33247ec653a580c48fdfa (patch) | |
| tree | 75c911a0e53fb99f6468462e3a4d127b45c604ee | |
| parent | 5be502174bf0f5d0aafaab57fa4512723d6d2973 (diff) | |
x86/idle: Use MONITORX and MWAITX mnemonics in <asm/mwait.h>
Current minimum required version of binutils is 2.30, which supports MONITORX
and MWAITX instruction mnemonics.
Replace the byte-wise specification of MONITORX and MWAITX with these proper
mnemonics.
No functional change intended.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250616083056.157460-1-ubizjak@gmail.com
| -rw-r--r-- | arch/x86/include/asm/mwait.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/x86/include/asm/mwait.h b/arch/x86/include/asm/mwait.h index 6ca6516c7492..e4815e15dc9a 100644 --- a/arch/x86/include/asm/mwait.h +++ b/arch/x86/include/asm/mwait.h @@ -36,9 +36,7 @@ static __always_inline void __monitor(const void *eax, u32 ecx, u32 edx) static __always_inline void __monitorx(const void *eax, u32 ecx, u32 edx) { - /* "monitorx %eax, %ecx, %edx" */ - asm volatile(".byte 0x0f, 0x01, 0xfa" - :: "a" (eax), "c" (ecx), "d"(edx)); + asm volatile("monitorx" :: "a" (eax), "c" (ecx), "d"(edx)); } static __always_inline void __mwait(u32 eax, u32 ecx) @@ -80,9 +78,7 @@ static __always_inline void __mwaitx(u32 eax, u32 ebx, u32 ecx) { /* No need for TSA buffer clearing on AMD */ - /* "mwaitx %eax, %ebx, %ecx" */ - asm volatile(".byte 0x0f, 0x01, 0xfb" - :: "a" (eax), "b" (ebx), "c" (ecx)); + asm volatile("mwaitx" :: "a" (eax), "b" (ebx), "c" (ecx)); } /* |