Index: /trunk/src/VBox/Additions/linux/drm/vbox_prime.c
===================================================================
--- /trunk/src/VBox/Additions/linux/drm/vbox_prime.c	(revision 74819)
+++ /trunk/src/VBox/Additions/linux/drm/vbox_prime.c	(revision 74820)
@@ -1,4 +1,5 @@
 /*
  * Copyright (C) 2017 Oracle Corporation
+ * This file is based on qxl_prime.c
  * Copyright 2017 Canonical
  *