diff options
Diffstat (limited to 'arch/x86/include/asm/alternative.h')
| -rw-r--r-- | arch/x86/include/asm/alternative.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index d7faa16622d8..0660e14690c8 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -31,8 +31,15 @@ */ #ifdef CONFIG_SMP -#define LOCK_PREFIX_HERE "LOCK_PREFIX_HERE\n\t" -#define LOCK_PREFIX "LOCK_PREFIX " +#define LOCK_PREFIX_HERE \ + ".pushsection .smp_locks,\"a\"\n" \ + ".balign 4\n" \ + ".long 671f - .\n" /* offset */ \ + ".popsection\n" \ + "671:" + +#define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; " + #else /* ! CONFIG_SMP */ #define LOCK_PREFIX_HERE "" #define LOCK_PREFIX "" @@ -167,7 +174,7 @@ static inline int alternatives_text_reserved(void *start, void *end) /* * Alternative inline assembly with input. * - * Pecularities: + * Peculiarities: * No memory clobber here. * Argument numbers start with 1. * Best is to use constraints that are fixed size (like (%1) ... "r") |