alternative       327 include/asm-x86/system.h #define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
alternative       328 include/asm-x86/system.h #define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
alternative       329 include/asm-x86/system.h #define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
alternative       421 include/asm-x86/system.h 	alternative(ASM_NOP3, "mfence", X86_FEATURE_MFENCE_RDTSC);
alternative       422 include/asm-x86/system.h 	alternative(ASM_NOP3, "lfence", X86_FEATURE_LFENCE_RDTSC);