linux-kernel - [tip: x86/entry] x86/traps: Remove pointless irq enable from do_spurious_interrupt

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Message-ID: <158281295805.28353.16374560066347927254.tip-bot2@tip-bot2>
Date:   Thu, 27 Feb 2020 14:15:58 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/entry] x86/traps: Remove pointless irq enable from
 do_spurious_interrupt_bug()

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

Commit-ID:     e039dd815941e785203142261397da6ec64d20cc
Gitweb:        https://git.kernel.org/tip/e039dd815941e785203142261397da6ec64d20cc
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Tue, 25 Feb 2020 22:36:40 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Thu, 27 Feb 2020 14:48:39 +01:00

x86/traps: Remove pointless irq enable from do_spurious_interrupt_bug()

That function returns immediately after conditionally reenabling interrupts which
is more than pointless and requires the ASM code to disable interrupts again.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Sean Christopherson <sean.j.christopherson@...el.com>
Reviewed-by: Alexandre Chartre <alexandre.chartre@...cle.com>
Reviewed-by: Frederic Weisbecker <frederic@...nel.org>
Reviewed-by: Andy Lutomirski <luto@...nel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20191023123117.871608831@linutronix.de
Link: https://lkml.kernel.org/r/20200225220216.518575042@linutronix.de


---
 arch/x86/kernel/traps.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 6ef00eb..474b8cb 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -862,7 +862,6 @@ do_simd_coprocessor_error(struct pt_regs *regs, long error_code)
 dotraplinkage void
 do_spurious_interrupt_bug(struct pt_regs *regs, long error_code)
 {
-	cond_local_irq_enable(regs);
 }
 
 dotraplinkage void