diff --git a/hw/vfio/Kconfig b/hw/vfio/Kconfig
index 7cdba0560a..91d9023b79 100644
--- a/hw/vfio/Kconfig
+++ b/hw/vfio/Kconfig
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 config VFIO
     bool
     depends on LINUX
diff --git a/hw/vfio/meson.build b/hw/vfio/meson.build
index 73d29f925f..63ea393076 100644
--- a/hw/vfio/meson.build
+++ b/hw/vfio/meson.build
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 vfio_ss = ss.source_set()
 vfio_ss.add(files(
   'listener.c',
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index f06236f37b..e1728c4ef6 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -1,4 +1,6 @@
 # See docs/devel/tracing.rst for syntax documentation.
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # pci.c
 vfio_intx_interrupt(const char *name, char line) " (%s) Pin %c"
diff --git a/hw/vfio/trace.h b/hw/vfio/trace.h
index 5a343aa59c..b34b61ddb2 100644
--- a/hw/vfio/trace.h
+++ b/hw/vfio/trace.h
@@ -1 +1,4 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 #include "trace/trace-hw_vfio.h"