diff --git a/[refs] b/[refs]
index 411b9a007479..dcc791c3c3f4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a9058ecd3cd72634cf548588ce79b3f225c9ca32
+refs/heads/master: 09db28b8a3765a7ec35eba80420c71a7973f5a88
diff --git a/trunk/drivers/kvm/kvm_main.c b/trunk/drivers/kvm/kvm_main.c
index 38375e2bb703..06314071c6d2 100644
--- a/trunk/drivers/kvm/kvm_main.c
+++ b/trunk/drivers/kvm/kvm_main.c
@@ -1865,6 +1865,11 @@ int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module)
 {
 	int r;
 
+	if (kvm_arch_ops) {
+		printk(KERN_ERR "kvm: already loaded the other module\n");
+		return -EEXIST;
+	}
+
 	kvm_arch_ops = ops;
 
 	if (!kvm_arch_ops->cpu_has_kvm_support()) {
@@ -1907,6 +1912,7 @@ void kvm_exit_arch(void)
 	unregister_reboot_notifier(&kvm_reboot_notifier);
 	on_each_cpu(kvm_arch_ops->hardware_disable, 0, 0, 1);
 	kvm_arch_ops->hardware_unsetup();
+	kvm_arch_ops = NULL;
 }
 
 static __init int kvm_init(void)