diff options
| 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 | |
| parent | 62122fd7dadac09704782d8bc051fb898a0272bd (diff) | |
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>
| -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 e65ddc62e11..fe79573c84b 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 |