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      1 #ifndef __QEMU_BARRIER_H
      2 #define __QEMU_BARRIER_H 1
      3 
      4 /* FIXME: arch dependant, x86 version */
      5 #define smp_wmb()   asm volatile("" ::: "memory")
      6 
      7 /* Compiler barrier */
      8 #define barrier()   asm volatile("" ::: "memory")
      9 
     10 #endif
     11