diff --git a/integration_tests/tests/backcompat.rs b/integration_tests/tests/backcompat.rs
new file mode 100644
index 0000000000..86fea89abf
--- /dev/null
+++ b/integration_tests/tests/backcompat.rs
@@ -0,0 +1,31 @@
+// Copyright 2022 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+pub mod fixture;
+use fixture::Config;
+use fixture::TestVm;
+
+// Tests for possible backwards compatibility issues.
+//
+// There is no backwards compatibility policy yet, these are just "change detector" tests. If you
+// break a test, make sure the change is intended and then ask in go/crosvm-chat to see if anyone
+// objects to updating the golden file.
+
+// Many changes to PCI devices can cause issues, e.g. some users depend on crosvm always choosing
+// the same PCI slots for particular devices.
+#[test]
+fn backcompat_test_simple_lspci() {
+    let mut vm = TestVm::new(Config::new()).unwrap();
+    let expected = include_str!("goldens/backcompat_test_simple_lspci.txt").trim();
+    let result = vm
+        .exec_in_guest("lspci -n")
+        .unwrap()
+        .trim()
+        .replace("\r", "");
+    assert_eq!(
+        expected,
+        result,
+        "PCI Devices changed:\n<<< Expected <<<\n{}\n<<<<<<<<<<<<<<<<\n>>> Got      >>>\n{}\n>>>>>>>>>>>>>>>>\n",
+        expected, result
+    );
+}
diff --git a/integration_tests/tests/boot.rs b/integration_tests/tests/boot.rs
index 8659f117b4..52cfbbace4 100644
--- a/integration_tests/tests/boot.rs
+++ b/integration_tests/tests/boot.rs
@@ -1,7 +1,7 @@
 // Copyright 2020 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-mod fixture;
+pub mod fixture;
 use fixture::Config;
 use fixture::TestVm;
 
diff --git a/integration_tests/tests/goldens/backcompat_test_simple_lspci.txt b/integration_tests/tests/goldens/backcompat_test_simple_lspci.txt
new file mode 100644
index 0000000000..737748235b
--- /dev/null
+++ b/integration_tests/tests/goldens/backcompat_test_simple_lspci.txt
@@ -0,0 +1,7 @@
+00:00.0 0600: 8086:1237
+00:01.0 00ff: 1af4:1042 (rev 01)
+00:02.0 00ff: 1af4:1044 (rev 01)
+00:03.0 00ff: 1af4:1045 (rev 01)
+00:04.0 0c03: 1b73:1000
+00:05.0 ffff: 1b36:0011 (rev 01)
+00:06.0 0604: 8086:3420