arch/um/include/sysdep-x86_64/barrier.h

   1 #ifndef __SYSDEP_X86_64_BARRIER_H
   2 #define __SYSDEP_X86_64_BARRIER_H
   3
   4 /* Copied from include/asm-x86_64 for use by userspace. */
   5 #define mb()    asm volatile("mfence":::"memory")
   6
   7 #endif