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 -tip] x86/asm: Use UD2 mnemonic in <asm/bug.h>
Date: Tue, 9 Sep 2025 12:00:21 +0200 [thread overview]
Message-ID: <20250909100038.1709394-1-ubizjak@gmail.com> (raw)
Current minimum required version of binutils is 2.30, which
supports UD2 instruction mnemonic.
Replace the byte-wise specification of UD2 with this proper
mnemonic.
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>
---
arch/x86/include/asm/bug.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
index e427a3f7b751..de6015765015 100644
--- a/arch/x86/include/asm/bug.h
+++ b/arch/x86/include/asm/bug.h
@@ -9,7 +9,7 @@
/*
* Despite that some emulators terminate on UD2, we use it for WARN().
*/
-#define ASM_UD2 ".byte 0x0f, 0x0b"
+#define ASM_UD2 "ud2"
#define INSN_UD2 0x0b0f
#define LEN_UD2 2
--
2.51.0
reply other threads:[~2025-09-09 10:00 UTC|newest]
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