diff --git a/tests/avocado/acpi-bits/bits-tests/smbios.py2 b/tests/avocado/acpi-bits/bits-tests/smbios.py2
index 9667d0542c..fc623de072 100644
--- a/tests/avocado/acpi-bits/bits-tests/smbios.py2
+++ b/tests/avocado/acpi-bits/bits-tests/smbios.py2
@@ -1,6 +1,8 @@
 # Copyright (c) 2015, Intel Corporation
 # All rights reserved.
 #
+# SPDX-License-Identifier: BSD-3-Clause
+#
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
@@ -24,6 +26,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# This script runs only from the biosbits VM.
+
 """SMBIOS/DMI module."""
 
 import bits
diff --git a/tests/avocado/acpi-bits/bits-tests/testacpi.py2 b/tests/avocado/acpi-bits/bits-tests/testacpi.py2
index dbc150076e..f818a9cce6 100644
--- a/tests/avocado/acpi-bits/bits-tests/testacpi.py2
+++ b/tests/avocado/acpi-bits/bits-tests/testacpi.py2
@@ -1,6 +1,8 @@
 # Copyright (c) 2015, Intel Corporation
 # All rights reserved.
 #
+# SPDX-License-Identifier: BSD-3-Clause
+#
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
@@ -24,6 +26,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# This script runs only from the biosbits VM.
+
 """Tests for ACPI"""
 
 import acpi
diff --git a/tests/avocado/acpi-bits/bits-tests/testcpuid.py2 b/tests/avocado/acpi-bits/bits-tests/testcpuid.py2
index ac55d912e1..7adefbe355 100644
--- a/tests/avocado/acpi-bits/bits-tests/testcpuid.py2
+++ b/tests/avocado/acpi-bits/bits-tests/testcpuid.py2
@@ -1,6 +1,8 @@
 # Copyright (c) 2012, Intel Corporation
 # All rights reserved.
 #
+# SPDX-License-Identifier: BSD-3-Clause
+#
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
@@ -24,6 +26,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# This script runs only from the biosbits VM.
+
 """Tests and helpers for CPUID."""
 
 import bits