fn create_vu_multi_port_device(
params: &[SerialParameters],
keep_rds: &mut Vec<RawDescriptor>,
) -> Result<VhostUserConsoleDevice>
fn create_vu_multi_port_device(
params: &[SerialParameters],
keep_rds: &mut Vec<RawDescriptor>,
) -> Result<VhostUserConsoleDevice>