diff --git a/arch/microblaze/atomic.h b/arch/microblaze/atomic.h
index 90fcd8b6..da9949aa 100644
--- a/arch/microblaze/atomic.h
+++ b/arch/microblaze/atomic.h
@@ -95,7 +95,9 @@ static inline void a_dec(volatile int *x)
 
 static inline void a_store(volatile int *p, int x)
 {
-	*p=x;
+	__asm__ __volatile__ (
+		"swi %1, %0"
+		: "=m"(*p) : "r"(x) : "memory" );
 }
 
 static inline void a_spin()