X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=blobdiff_plain;f=tools%2Fvirtio%2Fasm%2Fbarrier.h;h=468435ed64e6b370d028fc08a21560dca32584f9;hp=04d563fc9b95ca0e80d323e271473492400f7273;hb=64145482d3339d71f58857591d021588040543f4;hpb=4382a79b2746faf9db98a34ae1a1cbd364473f75

diff --git a/tools/virtio/asm/barrier.h b/tools/virtio/asm/barrier.h
index 04d563fc9b95..468435ed64e6 100644
--- a/tools/virtio/asm/barrier.h
+++ b/tools/virtio/asm/barrier.h
@@ -16,6 +16,16 @@
 # define mb() abort()
 # define dma_rmb() abort()
 # define dma_wmb() abort()
+#elif defined(__aarch64__)
+#define dmb(opt) asm volatile("dmb " #opt : : : "memory")
+#define virt_mb() __sync_synchronize()
+#define virt_rmb() dmb(ishld)
+#define virt_wmb() dmb(ishst)
+#define virt_store_mb(var, value)  do { WRITE_ONCE(var, value); dmb(ish); } while (0)
+/* Weak barriers should be used. If not - it's a bug */
+# define mb() abort()
+# define dma_rmb() abort()
+# define dma_wmb() abort()
 #else
 #error Please fill in barrier macros
 #endif