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Message-ID: <0e7fb0082e4d4d2b303819a2cef243a32fd86774.1741988314.git.jpoimboe@kernel.org>
Date: Fri, 14 Mar 2025 14:41:14 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
Linus Torvalds <torvalds@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
Uros Bizjak <ubizjak@...il.com>,
Andrew Cooper <andrew.cooper3@...rix.com>,
Ingo Molnar <mingo@...nel.org>
Subject: [PATCH 01/20] x86/cpu: Use named asm operands in prefetch[w]()
Use named operands in preparation for removing the operand numbering
restrictions in alternative_input().
Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
arch/x86/include/asm/processor.h | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 5d2f7e5aff26..2e9566134949 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -613,7 +613,7 @@ extern char ignore_fpu_irq;
# define BASE_PREFETCH ""
# define ARCH_HAS_PREFETCH
#else
-# define BASE_PREFETCH "prefetcht0 %1"
+# define BASE_PREFETCH "prefetcht0 %[val]"
#endif
/*
@@ -624,9 +624,9 @@ extern char ignore_fpu_irq;
*/
static inline void prefetch(const void *x)
{
- alternative_input(BASE_PREFETCH, "prefetchnta %1",
- X86_FEATURE_XMM,
- "m" (*(const char *)x));
+ alternative_input(BASE_PREFETCH,
+ "prefetchnta %[val]", X86_FEATURE_XMM,
+ [val] "m" (*(const char *)x));
}
/*
@@ -636,9 +636,9 @@ static inline void prefetch(const void *x)
*/
static __always_inline void prefetchw(const void *x)
{
- alternative_input(BASE_PREFETCH, "prefetchw %1",
- X86_FEATURE_3DNOWPREFETCH,
- "m" (*(const char *)x));
+ alternative_input(BASE_PREFETCH,
+ "prefetchw %[val]", X86_FEATURE_3DNOWPREFETCH,
+ [val] "m" (*(const char *)x));
}
#define TOP_OF_INIT_STACK ((unsigned long)&init_stack + sizeof(init_stack) - \
--
2.48.1
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