linux-kernel - [PATCH 15/20] x86/cpu/amd: Use named asm operands in asm_clear

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ced9352a854e896e00f57ab2b062526d688a5b8a.1741988314.git.jpoimboe@kernel.org>
Date: Fri, 14 Mar 2025 14:41:28 -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 15/20] x86/cpu/amd: Use named asm operands in asm_clear_divider()

Use named inline asm operands in preparation for using alternative_io().

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 arch/x86/include/asm/processor.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index a1baf2fc5f9b..b458ff0e4c79 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -709,8 +709,8 @@ static inline u32 per_cpu_l2c_id(unsigned int cpu)
  */
 static __always_inline void amd_clear_divider(void)
 {
-	asm volatile(ALTERNATIVE("", "div %2\n\t", X86_BUG_DIV0)
-		     :: "a" (0), "d" (0), "r" (1));
+	asm volatile(ALTERNATIVE("", "div %[one]\n\t", X86_BUG_DIV0)
+		     :: "a" (0), "d" (0), [one] "r" (1));
 }
 
 extern void amd_check_microcode(void);
-- 
2.48.1