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-rw-r--r--tests/functional/qemu_test/testcase.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/functional/qemu_test/testcase.py b/tests/functional/qemu_test/testcase.py
index e2a329c3e5..fceafb32b0 100644
--- a/tests/functional/qemu_test/testcase.py
+++ b/tests/functional/qemu_test/testcase.py
@@ -175,6 +175,13 @@ class QemuSystemTest(QemuBaseTest):
                          log_dir=self.logdir)
         self.log.debug('QEMUMachine "%s" created', name)
         self.log.debug('QEMUMachine "%s" temp_dir: %s', name, vm.temp_dir)
+
+        sockpath = os.environ.get("QEMU_TEST_QMP_BACKDOOR", None)
+        if sockpath is not None:
+            vm.add_args("-chardev",
+                        f"socket,id=backdoor,path={sockpath},server=on,wait=off",
+                        "-mon", "chardev=backdoor,mode=control")
+
         if args:
             vm.add_args(*args)
         return vm