Method signal

virtio-devices/src/mem.rs:611–616

(&self, int_type: VirtioInterruptType)

    }

    fn signal(&self, int_type: VirtioInterruptType) -> result::Result<(), DeviceError> {
        self.interrupt_cb.trigger(int_type).map_err(|e| {
            error!("Failed to signal used queue: {e:?}");
            DeviceError::FailedSignalingUsedQueue(e)
        })
    }

    fn process_queue(&mut self) -> Result<bool, Error> {
        let mut used_descs = false;