From 4868402d9582bfb00a5f0157ae5d7ffd2d539fb0 Mon Sep 17 00:00:00 2001 From: Alexander Potashev Date: Sat, 24 Oct 2009 03:37:23 +0400 Subject: [PATCH] x86, boot: Simplify setting of the PAE bit A single 'movl' is shorter than the 'xorl'-'orl' pair. No change in behaviour. Signed-off-by: Alexander Potashev LKML-Reference: <1256341043-4928-1-git-send-email-aspotashev@gmail.com> Signed-off-by: Ingo Molnar --- arch/x86/boot/compressed/head_64.S | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 077e1b69198e..faff0dc9c06a 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -107,8 +107,7 @@ ENTRY(startup_32) lgdt gdt(%ebp) /* Enable PAE mode */ - xorl %eax, %eax - orl $(X86_CR4_PAE), %eax + movl $(X86_CR4_PAE), %eax movl %eax, %cr4 /* -- 2.20.1