X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fum%2Finclude%2Fsysdep-x86_64%2Fbarrier.h;fp=arch%2Fum%2Finclude%2Fsysdep-x86_64%2Fbarrier.h;h=7b610befdc8f3521bd13c598034847fc1d680616;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/arch/um/include/sysdep-x86_64/barrier.h b/arch/um/include/sysdep-x86_64/barrier.h
new file mode 100644
index 000000000..7b610befd
--- /dev/null
+++ b/arch/um/include/sysdep-x86_64/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