int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev)
{
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
- int i, r, e;
+ int i, r;
/* We will pass the notifiers to the kernel, make sure that QEMU
* doesn't interfere.
r = virtio_device_grab_ioeventfd(vdev);
if (r < 0) {
error_report("binding does not support host notifiers");
- goto fail;
+ return r;
}
for (i = 0; i < hdev->nvqs; ++i) {
true);
if (r < 0) {
error_report("vhost VQ %d notifier binding failed: %d", i, -r);
- goto fail_vq;
+ vhost_dev_disable_notifiers(hdev, vdev);
+ return r;
}
}
return 0;
-fail_vq:
- while (--i >= 0) {
- e = virtio_bus_set_host_notifier(VIRTIO_BUS(qbus), hdev->vq_index + i,
- false);
- if (e < 0) {
- error_report("vhost VQ %d notifier cleanup error: %d", i, -r);
- }
- assert (e >= 0);
- virtio_bus_cleanup_host_notifier(VIRTIO_BUS(qbus), hdev->vq_index + i);
- }
- virtio_device_release_ioeventfd(vdev);
-fail:
- return r;
}
/* Stop processing guest IO notifications in vhost.