From aacdf83ab2e1c70fc1d5c4b8f541ba3f33ce5f7b Mon Sep 17 00:00:00 2001
From: Jimi Xenidis <jimix@watson.ibm.com>
Date: Tue, 28 Nov 2006 10:33:53 -0500
Subject: [PATCH] [POWERPC][XEN] cpu_relax() needs to call barrier()

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>

--HG--
extra : transplant_source : %A8%E6z%19%C3%25Zk%BC%0A%AA%5C%9E%176%F1%DD%D7ol
---
 xen/include/asm-powerpc/processor.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/include/asm-powerpc/processor.h b/xen/include/asm-powerpc/processor.h
index 8343ecee71..50d544b9ea 100644
--- a/xen/include/asm-powerpc/processor.h
+++ b/xen/include/asm-powerpc/processor.h
@@ -152,7 +152,8 @@ static inline ulong mfmsr(void) {
 static inline void nop(void) {
     __asm__ __volatile__ ("nop");
 }
-#define cpu_relax() nop()
+/* will need to address thread priorities when we go SMT */
+#define cpu_relax() barrier()
 
 static inline unsigned int mfpir(void)
 {
-- 
2.30.2