tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / arch / x86 / include / asm / alternative-asm.h
at v3.12-rc1 31 lines 500 B view raw
1#ifndef _ASM_X86_ALTERNATIVE_ASM_H 2#define _ASM_X86_ALTERNATIVE_ASM_H 3 4#ifdef __ASSEMBLY__ 5 6#include <asm/asm.h> 7 8#ifdef CONFIG_SMP 9 .macro LOCK_PREFIX 10672: lock 11 .pushsection .smp_locks,"a" 12 .balign 4 13 .long 672b - . 14 .popsection 15 .endm 16#else 17 .macro LOCK_PREFIX 18 .endm 19#endif 20 21.macro altinstruction_entry orig alt feature orig_len alt_len 22 .long \orig - . 23 .long \alt - . 24 .word \feature 25 .byte \orig_len 26 .byte \alt_len 27.endm 28 29#endif /* __ASSEMBLY__ */ 30 31#endif /* _ASM_X86_ALTERNATIVE_ASM_H */