diff options
Diffstat (limited to 'include/asm-x86_64/alternative.h')
| -rw-r--r-- | include/asm-x86_64/alternative.h | 21 |
1 files changed, 1 insertions, 20 deletions
diff --git a/include/asm-x86_64/alternative.h b/include/asm-x86_64/alternative.h index aa67bfd1b3ce..a584826cc570 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 */ @@ -102,9 +103,6 @@ static inline void alternatives_smp_switch(int smp) {} /* * Alternative inline assembly for SMP. * - * alternative_smp() takes two versions (SMP first, UP second) and is - * for more complex stuff such as spinlocks. - * * The LOCK_PREFIX macro defined here replaces the LOCK and * LOCK_PREFIX macros used everywhere in the source tree. * @@ -124,21 +122,6 @@ static inline void alternatives_smp_switch(int smp) {} */ #ifdef CONFIG_SMP -#define alternative_smp(smpinstr, upinstr, args...) \ - asm volatile ("661:\n\t" smpinstr "\n662:\n" \ - ".section .smp_altinstructions,\"a\"\n" \ - " .align 8\n" \ - " .quad 661b\n" /* label */ \ - " .quad 663f\n" /* new instruction */ \ - " .byte 0x66\n" /* X86_FEATURE_UP */ \ - " .byte 662b-661b\n" /* sourcelen */ \ - " .byte 664f-663f\n" /* replacementlen */ \ - ".previous\n" \ - ".section .smp_altinstr_replacement,\"awx\"\n" \ - "663:\n\t" upinstr "\n" /* replacement */ \ - "664:\n\t.fill 662b-661b,1,0x42\n" /* space for original */ \ - ".previous" : args) - #define LOCK_PREFIX \ ".section .smp_locks,\"a\"\n" \ " .align 8\n" \ @@ -147,8 +130,6 @@ static inline void alternatives_smp_switch(int smp) {} "661:\n\tlock; " #else /* ! CONFIG_SMP */ -#define alternative_smp(smpinstr, upinstr, args...) \ - asm volatile (upinstr : args) #define LOCK_PREFIX "" #endif |