Method add_interrupt_controller

vmm/src/device_manager.rs:1775–1820

(
        &mut self,
    )

    #[cfg(target_arch = "aarch64")]
    fn add_interrupt_controller(
        &mut self,
    ) -> DeviceManagerResult<Arc<Mutex<dyn InterruptController>>> {
        let interrupt_controller: Arc<Mutex<gic::Gic>> = Arc::new(Mutex::new(
            gic::Gic::new(
                self.config.lock().unwrap().cpus.boot_vcpus,
                Arc::clone(&self.msi_interrupt_manager),
                self.address_manager.vm.clone(),
            )
            .map_err(DeviceManagerError::CreateInterruptController)?,
        ));

        self.interrupt_controller = Some(interrupt_controller.clone());

        // Restore the vGic if this is in the process of restoration
        let id = String::from(gic::GIC_SNAPSHOT_ID);
        if let Some(vgic_snapshot) = snapshot_from_id(self.snapshot.as_ref(), &id) {
            // PMU support is optional. Nothing should be impacted if the PMU initialization failed.
            if self
                .cpu_manager
                .lock()
                .unwrap()
                .init_pmu(AARCH64_PMU_IRQ + 16)
                .is_err()
            {
                info!("Failed to initialize PMU");
            }

            let vgic_state = vgic_snapshot
                .to_state()
                .map_err(DeviceManagerError::RestoreGetState)?;
            let saved_vcpu_states = self.cpu_manager.lock().unwrap().get_saved_states();
            interrupt_controller
                .lock()
                .unwrap()
                .restore_vgic(vgic_state, &saved_vcpu_states)
                .unwrap();
        }

        self.device_tree
            .lock()
            .unwrap()
            .insert(id.clone(), device_node!(id, interrupt_controller));

        Ok(interrupt_controller)
    }

    #[cfg(target_arch = "aarch64")]
    pub fn get_interrupt_controller(&self) -> Option<&Arc<Mutex<gic::Gic>>> {