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| author | gorcunov@gmail.com <gorcunov@gmail.com> | 2008-03-23 00:00:08 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:29 +0200 |
| commit | fd3af53122e616c0ddba44a3da6d1c1877f72d29 (patch) | |
| tree | 34f1d9d653087ae76e528186c288dd5507f5afe0 /arch/x86/kernel/relocate_kernel_32.S | |
| parent | a7bba17bf09e1c5bdbdd6c0ab0c7833baedf4653 (diff) | |
| download | op-kernel-dev-fd3af53122e616c0ddba44a3da6d1c1877f72d29.zip op-kernel-dev-fd3af53122e616c0ddba44a3da6d1c1877f72d29.tar.gz | |
x86: relocate_kernel - use predefined macroses for processor state
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/relocate_kernel_32.S')
| -rw-r--r-- | arch/x86/kernel/relocate_kernel_32.S | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S index ce12bb8..a7ecc8e 100644 --- a/arch/x86/kernel/relocate_kernel_32.S +++ b/arch/x86/kernel/relocate_kernel_32.S @@ -9,6 +9,7 @@ #include <linux/linkage.h> #include <asm/page.h> #include <asm/kexec.h> +#include <asm/processor-flags.h> /* * Must be relocatable PIC code callable as a C function @@ -167,16 +168,16 @@ identity_mapped: pushl %edx /* Set cr0 to a known state: - * 31 0 == Paging disabled - * 18 0 == Alignment check disabled - * 16 0 == Write protect disabled - * 3 0 == No task switch - * 2 0 == Don't do FP software emulation. - * 0 1 == Proctected mode enabled + * - Paging disabled + * - Alignment check disabled + * - Write protect disabled + * - No task switch + * - Don't do FP software emulation. + * - Proctected mode enabled */ movl %cr0, %eax - andl $~((1<<31)|(1<<18)|(1<<16)|(1<<3)|(1<<2)), %eax - orl $(1<<0), %eax + andl $~(X86_CR0_PG | X86_CR0_AM | X86_CR0_WP | X86_CR0_TS | X86_CR0_EM), %eax + orl $(X86_CR0_PE), %eax movl %eax, %cr0 /* clear cr4 if applicable */ |
