Method add_external_mapping

virtio-devices/src/iommu.rs:1219–1221

(&mut self, device_id: u32, mapping: Arc<dyn ExternalDmaMapping>)

    }

    pub fn add_external_mapping(&mut self, device_id: u32, mapping: Arc<dyn ExternalDmaMapping>) {
        self.ext_mapping.lock().unwrap().insert(device_id, mapping);
    }

    #[cfg(fuzzing)]
    pub fn wait_for_epoll_threads(&mut self) {