From: Uros Bizjak <ubizjak@gmail.com>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Uros Bizjak <ubizjak@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH v3 1/3] x86/hweight: Use named operands in inline asm()
Date: Wed, 12 Mar 2025 13:38:43 +0100 [thread overview]
Message-ID: <20250312123905.149298-1-ubizjak@gmail.com> (raw)
No functional change intended.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
---
v3: Split patch into three separate patches.
---
arch/x86/include/asm/arch_hweight.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/arch_hweight.h b/arch/x86/include/asm/arch_hweight.h
index ba88edd0d58b..a11bb841c434 100644
--- a/arch/x86/include/asm/arch_hweight.h
+++ b/arch/x86/include/asm/arch_hweight.h
@@ -16,9 +16,9 @@ static __always_inline unsigned int __arch_hweight32(unsigned int w)
{
unsigned int res;
- asm (ALTERNATIVE("call __sw_hweight32", "popcntl %1, %0", X86_FEATURE_POPCNT)
- : "="REG_OUT (res)
- : REG_IN (w));
+ asm (ALTERNATIVE("call __sw_hweight32", "popcntl %[val], %[cnt]", X86_FEATURE_POPCNT)
+ : [cnt] "=" REG_OUT (res)
+ : [val] REG_IN (w));
return res;
}
@@ -44,9 +44,9 @@ static __always_inline unsigned long __arch_hweight64(__u64 w)
{
unsigned long res;
- asm (ALTERNATIVE("call __sw_hweight64", "popcntq %1, %0", X86_FEATURE_POPCNT)
- : "="REG_OUT (res)
- : REG_IN (w));
+ asm (ALTERNATIVE("call __sw_hweight64", "popcntq %[val], %[cnt]", X86_FEATURE_POPCNT)
+ : [cnt] "=" REG_OUT (res)
+ : [val] REG_IN (w));
return res;
}
--
2.48.1
next reply other threads:[~2025-03-12 12:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-12 12:38 Uros Bizjak [this message]
2025-03-12 12:38 ` [PATCH v3 2/3] x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm() Uros Bizjak
2025-03-12 19:33 ` [tip: x86/asm] " tip-bot2 for Uros Bizjak
2025-03-19 11:03 ` [tip: x86/core] " tip-bot2 for Uros Bizjak
2025-03-12 12:38 ` [PATCH v3 3/3] x86/hweight: Use asm_inline " Uros Bizjak
2025-03-12 19:33 ` [tip: x86/asm] x86/hweight: Use asm_inline() instead of asm() tip-bot2 for Uros Bizjak
2025-03-19 11:03 ` [tip: x86/core] " tip-bot2 for Uros Bizjak
2025-03-12 19:33 ` [tip: x86/asm] x86/hweight: Use named operands in inline asm() tip-bot2 for Uros Bizjak
2025-03-19 11:03 ` [tip: x86/core] " tip-bot2 for Uros Bizjak
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