diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 409ca370cfe2ddccd245efc3f3b0a20fe2360d49..66eb7648043bc9c1ba6383b0e2187a74c8dc8d5c 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -25,6 +25,7 @@
 #define wfi()		asm volatile("wfi" : : : "memory")
 
 #define isb()		asm volatile("isb" : : : "memory")
+#define dmb(opt)	asm volatile("dmb sy" : : : "memory")
 #define dsb(opt)	asm volatile("dsb sy" : : : "memory")
 
 #define mb()		dsb()