linux-kernel - [tip: x86/entry] x86/entry/64: Remove error code clearing from #DB and #MCE ASM stub

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Date:   Tue, 19 May 2020 19:58:20 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/entry] x86/entry/64: Remove error code clearing from #DB
 and #MCE ASM stub

The following commit has been merged into the x86/entry branch of tip:

Commit-ID:     f951cbcf04fc9c09feaa88791ad1e0d5f9f0f000
Gitweb:        https://git.kernel.org/tip/f951cbcf04fc9c09feaa88791ad1e0d5f9f0f000
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Tue, 25 Feb 2020 23:33:27 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Tue, 19 May 2020 16:04:11 +02:00

x86/entry/64: Remove error code clearing from #DB and #MCE ASM stub

The C entry points do not expect an error code.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@...cle.com>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Acked-by: Andy Lutomirski <luto@...nel.org>
Link: https://lkml.kernel.org/r/20200505135314.992621707@linutronix.de


---
 arch/x86/entry/entry_64.S | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index f47629a..eeb4285 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -642,7 +642,6 @@ SYM_CODE_START(\asmsym)
 	.endif
 
 	movq	%rsp, %rdi		/* pt_regs pointer */
-	xorl	%esi, %esi		/* Clear the error code */
 
 	.if \vector == X86_TRAP_DB
 		subq	$DB_STACK_OFFSET, CPU_TSS_IST(IST_INDEX_DB)