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| author | Jan Beulich <jbeulich@novell.com> | 2006-08-30 17:37:10 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-30 23:05:15 (GMT) |
| commit | 61171b8dbd36b0cc34d3813a59a8e4dc2984414d (patch) | |
| tree | 5c4dede0bddc19c1e564ebcd95976afcebe63a4f | |
| parent | 29fe5f3bafb644c33269fb0f2a719d4809a07332 (diff) | |
| download | linux-61171b8dbd36b0cc34d3813a59a8e4dc2984414d.tar.xz | |
[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>
| -rw-r--r-- | include/asm-i386/alternative.h | 2 | ||||
| -rw-r--r-- | include/asm-x86_64/alternative.h | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-i386/alternative.h b/include/asm-i386/alternative.h index 96adbab..bb3b631 100644 --- a/include/asm-i386/alternative.h +++ b/include/asm-i386/alternative.h @@ -116,7 +116,7 @@ static inline void alternatives_smp_switch(int smp) {} " .align 4\n" \ " .long 661b\n" /* label */ \ " .long 663f\n" /* new instruction */ \ - " .byte 0x68\n" /* X86_FEATURE_UP */ \ + " .byte " __stringify(X86_FEATURE_UP) "\n" \ " .byte 662b-661b\n" /* sourcelen */ \ " .byte 664f-663f\n" /* replacementlen */ \ ".previous\n" \ diff --git a/include/asm-x86_64/alternative.h b/include/asm-x86_64/alternative.h index aa67bfd..709ad3f 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" \ |