def METHOD_NAME(session, expected):
    """
    Checks if guest system was started with expected parameter.
    Fails test otherwise.
    :param expected: Expected substring in kernel cmdline
    :param session: active guest session
    """
    cmd = 'cat /proc/cmdline'
    status, output = session.cmd_status_output(cmd)
    check_status_output(status, output, expected_match=expected)