diff --git a/opal/asm/base/ARM.asm b/opal/asm/base/ARM.asm
index 3f545f4..3afb3b1 100644
--- a/opal/asm/base/ARM.asm
+++ b/opal/asm/base/ARM.asm
@@ -3,19 +3,16 @@ START_FILE
 
        ALIGN(4)
 START_FUNC(opal_atomic_mb)
-       dmb
        bx      lr
 END_FUNC(opal_atomic_mb)
 
 
 START_FUNC(opal_atomic_rmb)
-       dmb
        bx      lr
 END_FUNC(opal_atomic_rmb)
 
 
 START_FUNC(opal_atomic_wmb)
-       dmb
        bx      lr
 END_FUNC(opal_atomic_wmb)
 
@@ -43,7 +40,6 @@ START_FUNC(opal_atomic_cmpset_acq_32)
        strex   r12, r2, [r0]
        cmp     r12, #0
        bne     REFLSYM(3)
-       dmb
        mov     r0, #1
        LSYM(4)
        movne   r0, #0
@@ -56,7 +52,6 @@ START_FUNC(opal_atomic_cmpset_rel_32)
        ldrex   r3, [r0]
        cmp     r1, r3
        bne     REFLSYM(6)
-       dmb
        strex   r12, r2, [r0]
        cmp     r12, #0
        bne     REFLSYM(4)
@@ -98,7 +93,6 @@ START_FUNC(opal_atomic_cmpset_acq_64)
        strexd  r1, r6, r7, [r0]
        cmp     r1, #0
        bne     REFLSYM(9)
-       dmb
        mov     r0, #1
        LSYM(10)
        movne   r0, #0
@@ -116,7 +110,6 @@ START_FUNC(opal_atomic_cmpset_rel_64)
        it      eq
        cmpeq   r5, r3
        bne     REFLSYM(12)
-       dmb
        strexd  r1, r6, r7, [r0]
        cmp     r1, #0
        bne     REFLSYM(11)
diff --git a/opal/asm/generated/atomic-local.s b/opal/asm/generated/atomic-local.s
index 80db940..db4eb56 100644
--- a/opal/asm/generated/atomic-local.s
+++ b/opal/asm/generated/atomic-local.s
@@ -4,7 +4,6 @@
 	.globl opal_atomic_mb
 	.type opal_atomic_mb, #function
 opal_atomic_mb:
-       dmb
        bx      lr
 	.size opal_atomic_mb, .-opal_atomic_mb
 
@@ -12,7 +11,6 @@ opal_atomic_mb:
 	.globl opal_atomic_rmb
 	.type opal_atomic_rmb, #function
 opal_atomic_rmb:
-       dmb
        bx      lr
 	.size opal_atomic_rmb, .-opal_atomic_rmb
 
@@ -20,7 +18,6 @@ opal_atomic_rmb:
 	.globl opal_atomic_wmb
 	.type opal_atomic_wmb, #function
 opal_atomic_wmb:
-       dmb
        bx      lr
 	.size opal_atomic_wmb, .-opal_atomic_wmb
 
@@ -52,7 +49,6 @@ opal_atomic_cmpset_acq_32:
        strex   r12, r2, [r0]
        cmp     r12, #0
        bne     .L3
-       dmb
        mov     r0, #1
        .L4:
        movne   r0, #0
@@ -67,7 +63,6 @@ opal_atomic_cmpset_rel_32:
        ldrex   r3, [r0]
        cmp     r1, r3
        bne     .L6
-       dmb
        strex   r12, r2, [r0]
        cmp     r12, #0
        bne     .L4
diff --git a/opal/include/opal/sys/arm/atomic.h b/opal/include/opal/sys/arm/atomic.h
index 72ae214..968a289 100644
--- a/opal/include/opal/sys/arm/atomic.h
+++ b/opal/include/opal/sys/arm/atomic.h
@@ -38,9 +38,9 @@
 #define OPAL_HAVE_ATOMIC_MEM_BARRIER 1
 /* use the DMB instruction if available... */
 
-#define MB()  __asm__ __volatile__ ("dmb" : : : "memory")
-#define RMB() __asm__ __volatile__ ("dmb" : : : "memory")
-#define WMB() __asm__ __volatile__ ("dmb" : : : "memory")
+#define MB()  
+#define RMB() 
+#define WMB() 
 
 #elif (OPAL_ASM_ARM_VERSION == 6)