> +static int iavf_emu_update_status(int vfio_dev_id) {
> + struct iavf_emudev *dev;
> + int ret;
> +
> + dev = find_iavf_with_dev_id(vfio_dev_id);
> + if (!dev)
> + return -1;
> +
> + ret = iavf_emu_setup_mem_table(dev);
> + if (ret) {
> + EMU_IAVF_LOG(ERR, "Failed to set up memtable for "
> + "device %d", dev->vfio->dev_id);
> + return ret;
> + }
> +
> + ret = iavf_emu_setup_irq(dev);
In update callback, irq fds will be reinitialized here. Think about if the
update happening during mailbox communication, the eventfd of mailbox will be
cleared without notify.
> + if (ret) {
> + EMU_IAVF_LOG(ERR, "Failed to set up irq for "
> + "device %d", dev->vfio->dev_id);
> + return ret;
> + }
> +
> + dev->ops->update_status(dev->edev);
> +
> + return 0;
> +}
