From: Alexey Dobriyan <adobriyan@gmail.com>
To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com
Cc: x86@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org,
Alexey Dobriyan <adobriyan@gmail.com>
Subject: [PATCH 2/4] x86/asm: delete dummy variable in clwb()
Date: Fri, 7 Mar 2025 09:12:01 +0300 [thread overview]
Message-ID: <20250307061203.3281-2-adobriyan@gmail.com> (raw)
In-Reply-To: <20250307061203.3281-1-adobriyan@gmail.com>
Cast to pointer-to-array instead.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
arch/x86/include/asm/special_insns.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index 494a1aa19f05..d349aa0f0a83 100644
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -179,17 +179,15 @@ static inline void clflushopt(volatile void *__p)
"+m" (*(volatile char __force *)__p));
}
-static inline void clwb(volatile void *__p)
+static inline void clwb(volatile void *p)
{
- volatile struct { char x[64]; } *p = __p;
-
asm volatile(ALTERNATIVE_2(
".byte 0x3e; clflush (%[pax])",
".byte 0x66; clflush (%[pax])", /* clflushopt (%%rax) */
X86_FEATURE_CLFLUSHOPT,
".byte 0x66, 0x0f, 0xae, 0x30", /* clwb (%%rax) */
X86_FEATURE_CLWB)
- : [p] "+m" (*p)
+ : [p] "+m" (*(volatile char(*)[64])p)
: [pax] "a" (p));
}
--
2.45.3
next prev parent reply other threads:[~2025-03-07 6:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-07 6:12 [PATCH 1/4] x86/asm: inline constant inputs in rdpkru(), wrpkru() Alexey Dobriyan
2025-03-07 6:12 ` Alexey Dobriyan [this message]
2025-03-07 6:12 ` [PATCH 3/4] x86/asm: delete dummy variables in movdir64b() Alexey Dobriyan
2025-03-07 11:49 ` Ingo Molnar
2025-03-07 11:54 ` H. Peter Anvin
2025-03-07 16:15 ` Alexey Dobriyan
2025-03-07 16:23 ` H. Peter Anvin
2025-03-07 6:12 ` [PATCH 4/4] x86/asm: delete dummy variable in enqcmds() Alexey Dobriyan
2025-03-07 16:29 ` [PATCH 1/4] x86/asm: inline constant inputs in rdpkru(), wrpkru() Dave Hansen
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