1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 952eba6701f..fbbd3f6f006 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -385,15 +385,15 @@ BEGIN_FTR_SECTION
         oris    r0,r6,(SLB_ESID_V)@h
         ori     r0,r0,(SLB_NUM_BOLTED-1)@l
 
-        /* Update the last bolted SLB */
+        /* Update the last bolted SLB.  No write barriers are needed
+         * here, provided we only update the current CPU's SLB shadow
+         * buffer.
+         */
         ld      r9,PACA_SLBSHADOWPTR(r13)
         li      r12,0
         std     r12,SLBSHADOW_STACKESID(r9) /* Clear ESID */
-        eieio
         std     r7,SLBSHADOW_STACKVSID(r9)  /* Save VSID */
-        eieio
         std     r0,SLBSHADOW_STACKESID(r9)  /* Save ESID */
-        eieio
 
         slbie   r6
         slbie   r6              /* Workaround POWER5 < DD2.1 issue */