1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 87eb07f94c5f..cfc28e93c825 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -148,7 +148,11 @@ static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb)
                         __func__, slbe, slb->vsid, slb->esid);
 
         out_be64(&priv2->slb_index_W, slbe);
+        /* set invalid before writing vsid */
+        out_be64(&priv2->slb_esid_RW, 0);
+        /* now it's safe to write the vsid */
         out_be64(&priv2->slb_vsid_RW, slb->vsid);
+        /* setting the new esid makes the entry valid again */
         out_be64(&priv2->slb_esid_RW, slb->esid);
 }