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| author | Wang YanQing <udknight@gmail.com> | 2013-06-28 22:45:16 +0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-06-28 15:27:29 -0700 |
| commit | 237d1548543312fcc8c99d302ab68fbf8ef6f97f (patch) | |
| tree | 2e3caeeddde3e72d849e707b7022cf1829626fb9 /arch/x86/kernel/head_32.S | |
| parent | 62122fd7dadac09704782d8bc051fb898a0272bd (diff) | |
| download | linux-237d1548543312fcc8c99d302ab68fbf8ef6f97f.tar.gz | |
x86: Fix override new_cpu_data.x86 with 486
We should set X86 to 486 before use cpuid to detect the cpu type, if we set X86 to 486 after cpuid, then we will get 486 until cpu_detect runs. Signed-off-by: Wang YanQing <udknight@gmail.com> Link: http://lkml.kernel.org/r/20130628144516.GA2177@udknight Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/head_32.S')
| -rw-r--r-- | arch/x86/kernel/head_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index e65ddc62e113..fe79573c84b9 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -410,6 +410,7 @@ enable_paging: /* * Check if it is 486 */ + movb $4,X86 # at least 486 cmpl $-1,X86_CPUID je is486 @@ -437,7 +438,6 @@ enable_paging: movl %edx,X86_CAPABILITY is486: - movb $4,X86 movl $0x50022,%ecx # set AM, WP, NE and MP movl %cr0,%eax andl $0x80000011,%eax # Save PG,PE,ET |