diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c
index 699187ab380099a32d926a83dde84d96e7124e85..5b9ac32801c7604b25c64804fb888aa1ebbbceab 100644
--- a/drivers/lguest/page_tables.c
+++ b/drivers/lguest/page_tables.c
@@ -1002,6 +1002,7 @@ void guest_set_pgd(struct lguest *lg, unsigned long gpgdir, u32 idx)
 			kill_guest(&lg->cpus[0],
 				   "Cannot populate switcher mapping");
 		}
+		lg->pgdirs[pgdir].last_host_cpu = -1;
 	}
 }
 
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index bff0775e258c9ce30b1615e38492fa123eb49f8a..5174ebac288d65e70f31c13867e44aa98cc18ff4 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -3,6 +3,7 @@
  *
  * Since these may be in userspace, we use (inline) accessors.
  */
+#include <linux/module.h>
 #include <linux/vringh.h>
 #include <linux/virtio_ring.h>
 #include <linux/kernel.h>
@@ -1005,3 +1006,5 @@ int vringh_need_notify_kern(struct vringh *vrh)
 	return __vringh_need_notify(vrh, getu16_kern);
 }
 EXPORT_SYMBOL(vringh_need_notify_kern);
+
+MODULE_LICENSE("GPL");