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authorJan Beulich <jbeulich@novell.com>2006-08-30 19:37:10 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-08-31 01:05:15 +0200
commit61171b8dbd36b0cc34d3813a59a8e4dc2984414d (patch)
tree5c4dede0bddc19c1e564ebcd95976afcebe63a4f /include/asm-x86_64/alternative.h
parent[PATCH] i386: Add kernel thread stack frame termination for properly stopping... (diff)
downloadlinux-61171b8dbd36b0cc34d3813a59a8e4dc2984414d.tar.xz
linux-61171b8dbd36b0cc34d3813a59a8e4dc2984414d.zip
[PATCH] x86: fix x86 cpuid keys used in alternative_smp()
By hard-coding the cpuid keys for alternative_smp() rather than using the symbolic constant it turned out that incorrect values were used on both i386 (0x68 instead of 0x69) and x86-64 (0x66 instead of 0x68). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/alternative.h')
-rw-r--r--include/asm-x86_64/alternative.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-x86_64/alternative.h b/include/asm-x86_64/alternative.h
index aa67bfd1b3ce..709ad3f0d354 100644
--- a/include/asm-x86_64/alternative.h
+++ b/include/asm-x86_64/alternative.h
@@ -4,6 +4,7 @@
#ifdef __KERNEL__
#include <linux/types.h>
+#include <asm/cpufeature.h>
struct alt_instr {
u8 *instr; /* original instruction */
@@ -130,7 +131,7 @@ static inline void alternatives_smp_switch(int smp) {}
" .align 8\n" \
" .quad 661b\n" /* label */ \
" .quad 663f\n" /* new instruction */ \
- " .byte 0x66\n" /* X86_FEATURE_UP */ \
+ " .byte " __stringify(X86_FEATURE_UP) "\n" \
" .byte 662b-661b\n" /* sourcelen */ \
" .byte 664f-663f\n" /* replacementlen */ \
".previous\n" \