Method pause

vmm/src/device_manager.rs:5569–5594

(&mut self)

impl Pausable for DeviceManager {
    fn pause(&mut self) -> result::Result<(), MigratableError> {
        for (_, device_node) in self.device_tree.lock().unwrap().iter() {
            if let Some(migratable) = &device_node.migratable {
                match migratable.lock().unwrap().pause() {
                    Ok(()) => {}
                    Err(MigratableError::DeviceDisconnected(id)) => {
                        warn!("Skipping pause for disconnected device {id}");
                    }
                    Err(e) => return Err(e),
                }
            }
        }
        // On AArch64, the pause of device manager needs to trigger
        // a "pause" of GIC, which will flush the GIC pending tables
        // and ITS tables to guest RAM.
        #[cfg(target_arch = "aarch64")]
        {
            self.get_interrupt_controller()
                .unwrap()
                .lock()
                .unwrap()
                .pause()?;
        };

        Ok(())
    }

    fn resume(&mut self) -> result::Result<(), MigratableError> {
        for (_, device_node) in self.device_tree.lock().unwrap().iter() {