diff --git a/[refs] b/[refs]
index 49da1f640c15..eb9d7f9e8b0f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a13ad0bd8869bb491c67918662f9b1852595af5
+refs/heads/master: 18c07cf530cf4aa8b7551801f68ed40db5ee4e45
diff --git a/trunk/arch/x86/kernel/tlb_uv.c b/trunk/arch/x86/kernel/tlb_uv.c
index f885023167e0..6812b829ed83 100644
--- a/trunk/arch/x86/kernel/tlb_uv.c
+++ b/trunk/arch/x86/kernel/tlb_uv.c
@@ -200,6 +200,7 @@ static int uv_wait_completion(struct bau_desc *bau_desc,
 				destination_timeouts = 0;
 			}
 		}
+		cpu_relax();
 	}
 	return FLUSH_COMPLETE;
 }