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authorAlexander Potashev <aspotashev@gmail.com>2009-10-24 03:37:23 +0400
committerIngo Molnar <mingo@elte.hu>2009-10-24 11:06:38 +0200
commit4868402d9582bfb00a5f0157ae5d7ffd2d539fb0 (patch)
tree317ed346e8415fa959c8e0a3d3e0af62961b5401 /arch/x86/boot
parentb1258ac2963d42ee7e807d2993d15e3dd39ff4b0 (diff)
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 <aspotashev@gmail.com> LKML-Reference: <1256341043-4928-1-git-send-email-aspotashev@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/compressed/head_64.S3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 077e1b69198..faff0dc9c06 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
/*