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diff --git a/include/asm-i386/alternative-asm.i b/include/asm-i386/alternative-asm.i
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+++ b/include/asm-i386/alternative-asm.i
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+#include <linux/config.h>
+
+#ifdef CONFIG_SMP
+ .macro LOCK_PREFIX
+1: lock
+ .section .smp_locks,"a"
+ .align 4
+ .long 1b
+ .previous
+ .endm
+#else
+ .macro LOCK_PREFIX
+ .endm
+#endif