[PATCH 14/15] x86/percpu: Remove !CONFIG_X86_CX8 methods
From: Ingo Molnar
Date: Fri Apr 25 2025 - 04:50:06 EST
TODO: review the constraints.
NOT-Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/include/asm/percpu.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 5fe314a2e73e..275c76a031ee 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -334,8 +334,7 @@ do { \
new__.var = _nval; \
\
asm_inline qual ( \
- ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \
- "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \
+ "cmpxchg8b " __percpu_arg([var]) \
: ALT_OUTPUT_SP([var] "+m" (__my_cpu_var(_var)), \
"+a" (old__.low), "+d" (old__.high)) \
: "b" (new__.low), "c" (new__.high), \
@@ -363,8 +362,7 @@ do { \
new__.var = _nval; \
\
asm_inline qual ( \
- ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \
- "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \
+ "cmpxchg8b " __percpu_arg([var]) \
CC_SET(z) \
: ALT_OUTPUT_SP(CC_OUT(z) (success), \
[var] "+m" (__my_cpu_var(_var)), \
--
2.45.2