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x86 setup: use X86_CR0_PE macro instead of hard-coded constant

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To set CR0.PE, use the X86_CR0_PE macro defined in
<asm/processor-flags.h> instead of hardcoding it as a constant (1).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
H. Peter Anvin
2008-01-30 13:33:02 +01:00
committed by Ingo Molnar
parent 88089519f3
commit 02a7b425e8
1 changed files with 2 additions and 1 deletions
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3
arch/x86/boot/pmjump.S
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@@ -15,6 +15,7 @@
*/ */
#include <asm/boot.h> #include <asm/boot.h>
#include <asm/processor-flags.h>
#include <asm/segment.h> #include <asm/segment.h>
.text .text
@@ -39,7 +40,7 @@ protected_mode_jump:
movw $__BOOT_TSS, %di movw $__BOOT_TSS, %di
movl %cr0, %edx movl %cr0, %edx
orb $1, %dl # Protected mode (PE) bit orb $X86_CR0_PE, %dl # Protected mode
movl %edx, %cr0 movl %edx, %cr0
jmp 1f # Short jump to serialize on 386/486 jmp 1f # Short jump to serialize on 386/486
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