This is the xen part of the kthread patch

Signed-off-by: Ben Guthro <bguthro@xxxxxxxxxxxxxxx>
Signed-off-by: Robert Phillips <rphillips@xxxxxxxxxxxxxxx>

diff -r a0370a9131be unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c
--- a/unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c Thu Sep 
06 09:43:42 2007 -0400
+++ b/unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c Thu Sep 
06 09:44:14 2007 -0400
@@ -17,12 +17,14 @@ struct ap_suspend_info {
 atomic_t nr_spinning;
 };
 
+
 /*
 * Use a rwlock to protect the hypercall page from being executed in AP context
 * while the BSP is re-initializing it after restore.
 */
 static DEFINE_RWLOCK(suspend_lock);
 
+#ifdef CONFIG_SMP
 /*
 * Spinning prevents, for example, APs touching grant table entries while
 * the shared grant table is not mapped into the address space imemdiately
@@ -47,6 +49,8 @@ static void ap_suspend(void *_info)
 mb();
 atomic_dec(&info->nr_spinning);
 }
+
+#endif
 
 static int bp_suspend(void)
 {

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