diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index a98a157065..4cdcb3f7e7 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1,3 +1,14 @@
+/*
+ * CXL Type 3 (memory expander) device
+ *
+ * Copyright(C) 2020 Intel Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ *
+ * SPDX-License-Identifier: GPL-v2-only
+ */
+
 #include "qemu/osdep.h"
 #include "qemu/units.h"
 #include "qemu/error-report.h"
diff --git a/hw/mem/cxl_type3_stubs.c b/hw/mem/cxl_type3_stubs.c
index f3e4a9fa72..8ba5d3d1f7 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -1,3 +1,13 @@
+/*
+ * CXL Type 3 (memory expander) device QMP stubs
+ *
+ * Copyright(C) 2020 Intel Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ *
+ * SPDX-License-Identifier: GPL-v2-only
+ */
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"