diff options
Diffstat (limited to 'arch/um/sys-x86_64/sysdep/barrier.h')
| -rw-r--r-- | arch/um/sys-x86_64/sysdep/barrier.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/sysdep/barrier.h b/arch/um/sys-x86_64/sysdep/barrier.h new file mode 100644 index 00000000000..7b610befdc8 --- /dev/null +++ b/arch/um/sys-x86_64/sysdep/barrier.h @@ -0,0 +1,7 @@ +#ifndef __SYSDEP_X86_64_BARRIER_H +#define __SYSDEP_X86_64_BARRIER_H + +/* Copied from include/asm-x86_64 for use by userspace. */ +#define mb() asm volatile("mfence":::"memory") + +#endif |