arch/powerpc/kernel/rtas.c |    9 +++++++++
 kernel/cpu.c               |    4 ++--
 2 files changed, 11 insertions(+), 2 deletions(-)

Index: linux-2.6.19-rc5/arch/powerpc/kernel/rtas.c
===================================================================
--- linux-2.6.19-rc5.orig/arch/powerpc/kernel/rtas.c	2006-11-08 07:54:20.000000000 +0530
+++ linux-2.6.19-rc5/arch/powerpc/kernel/rtas.c	2006-11-13 17:39:10.000000000 +0530
@@ -53,6 +53,9 @@
 
 unsigned long rtas_rmo_buf;
 
+extern  int cpu_hotplug_disabled;
+extern  struct mutex cpu_add_remove_lock;
+
 /*
  * If non-NULL, this gets called when the kernel terminates.
  * This is done like this so rtas_flash can be a module.
@@ -881,6 +884,12 @@
 
 #ifdef CONFIG_HOTPLUG_CPU
 	rtas_stop_self_args.token = rtas_token("stop-self");
+	if(rtas_stop_self_args.token == RTAS_UNKNOWN_SERVICE) {
+		mutex_lock(&cpu_add_remove_lock);
+		cpu_hotplug_disabled = 1;
+		mutex_unlock(&cpu_add_remove_lock);
+	}
+
 #endif /* CONFIG_HOTPLUG_CPU */
 #ifdef CONFIG_RTAS_ERROR_LOGGING
 	rtas_last_error_token = rtas_token("rtas-last-error");
Index: linux-2.6.19-rc5/kernel/cpu.c
===================================================================
--- linux-2.6.19-rc5.orig/kernel/cpu.c	2006-11-08 07:54:20.000000000 +0530
+++ linux-2.6.19-rc5/kernel/cpu.c	2006-11-13 17:36:22.000000000 +0530
@@ -16,7 +16,7 @@
 #include <linux/mutex.h>
 
 /* This protects CPUs going up and down... */
-static DEFINE_MUTEX(cpu_add_remove_lock);
+DEFINE_MUTEX(cpu_add_remove_lock);
 static DEFINE_MUTEX(cpu_bitmask_lock);
 
 static __cpuinitdata RAW_NOTIFIER_HEAD(cpu_chain);
@@ -24,7 +24,7 @@
 /* If set, cpu_up and cpu_down will return -EBUSY and do nothing.
  * Should always be manipulated under cpu_add_remove_lock
  */
-static int cpu_hotplug_disabled;
+int cpu_hotplug_disabled;
 
 #ifdef CONFIG_HOTPLUG_CPU