linux-kernel - [PATCH 14/15] x86/percpu: Remove !CONFIG_X86

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Message-ID: <20250425084216.3913608-15-mingo@kernel.org>
Date: Fri, 25 Apr 2025 10:42:11 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Ingo Molnar <mingo@...nel.org>,
	"Ahmed S . Darwish" <darwi@...utronix.de>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Arnd Bergmann <arnd@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	John Ogness <john.ogness@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 14/15] x86/percpu: Remove !CONFIG_X86_CX8 methods

TODO: review the constraints.

NOT-Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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