[Xen-devel] [PATCH] pv-on-hvm: Use wmb instead of rmb

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

This is the same fix as 
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77db69c38249

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>

diff -r f681c4de91fc unmodified_drivers/linux-2.6/platform-pci/evtchn.c
--- a/unmodified_drivers/linux-2.6/platform-pci/evtchn.c        Wed May 28 
16:14:10 2008 +0100
+++ b/unmodified_drivers/linux-2.6/platform-pci/evtchn.c        Thu May 29 
16:37:23 2008 +0900
@@ -284,7 +284,7 @@
 
 #ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */
        /* Clear master flag /before/ clearing selector flag. */
-       rmb();
+       wmb();
 #endif
        l1 = xchg(&v->evtchn_pending_sel, 0);
 

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