diff options
| -rw-r--r-- | arch/x86/kernel/alternative.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 5079f24c955..9495ac16b67 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -417,7 +417,12 @@ int alternatives_text_reserved(void *start, void *end) return 1; } } - + /* + * Intel Archiecture Software Developer's Manual section 7.1.3 specifies + * that a core serializing instruction such as "cpuid" should be + * executed on _each_ core before the new instruction is made visible. + */ + sync_core(); return 0; } #endif |