diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index eedf94fa5664..10adb2fb8ffe 100644
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -546,6 +546,7 @@ NGtsb_init:
 	subcc		%o1, 0x100, %o1
 	bne,pt		%xcc, 1b
 	 add		%o0, 0x100, %o0
+	membar		#Sync
 	retl
 	 wr		%g2, 0x0, %asi
 	.size		NGtsb_init, .-NGtsb_init
diff --git a/arch/sparc64/lib/NGbzero.S b/arch/sparc64/lib/NGbzero.S
index e86baece5cc8..f10e4529ee37 100644
--- a/arch/sparc64/lib/NGbzero.S
+++ b/arch/sparc64/lib/NGbzero.S
@@ -88,6 +88,7 @@ NGbzero_loop:
 	bne,pt		%xcc, NGbzero_loop
 	 add		%o0, 64, %o0
 
+	membar		#Sync
 	wr		%o4, 0x0, %asi
 	brz,pn		%o1, NGbzero_done
 NGbzero_medium:
diff --git a/arch/sparc64/lib/NGmemcpy.S b/arch/sparc64/lib/NGmemcpy.S
index 8e522b3dc095..66063a9a66b8 100644
--- a/arch/sparc64/lib/NGmemcpy.S
+++ b/arch/sparc64/lib/NGmemcpy.S
@@ -247,6 +247,8 @@ FUNC_NAME:	/* %o0=dst, %o1=src, %o2=len */
 	/* fall through */
 
 60:	
+	membar		#Sync
+
 	/* %o2 contains any final bytes still needed to be copied
 	 * over. If anything is left, we copy it one byte at a time.
 	 */
diff --git a/arch/sparc64/lib/NGpage.S b/arch/sparc64/lib/NGpage.S
index 7d7c3bb8dcbf..8ce3a0c9c537 100644
--- a/arch/sparc64/lib/NGpage.S
+++ b/arch/sparc64/lib/NGpage.S
@@ -41,6 +41,7 @@ NGcopy_user_page:	/* %o0=dest, %o1=src, %o2=vaddr */
 	subcc		%g7, 64, %g7
 	bne,pt		%xcc, 1b
 	 add		%o0, 32, %o0
+	membar		#Sync
 	retl
 	 nop
 
@@ -63,6 +64,7 @@ NGclear_user_page:	/* %o0=dest, %o1=vaddr */
 	subcc		%g7, 64, %g7
 	bne,pt		%xcc, 1b
 	 add		%o0, 32, %o0
+	membar		#Sync
 	retl
 	 nop