在 2021/6/24 下午12:46, Yongji Xie 写道:
So we need to deal with both FEATURES_OK and reset, but probably not
DRIVER_OK.
OK, I see. Thanks for the explanation. One more question is how about
clearing the corresponding status bit in get_status() rather than
making set_status() fail. Since the spec recommends this way for
validation which is done in virtio_dev_remove() and
virtio_finalize_features().
Thanks,
Yongji
I think you can. Or it would be even better that we just don't set the
bit during set_status().
I just realize that in vdpa_reset() we had:
static inline void vdpa_reset(struct vdpa_device *vdev)
{
const struct vdpa_config_ops *ops = vdev->config;
vdev->features_valid = false;
ops->set_status(vdev, 0);
}
We probably need to add the synchronization here. E.g re-read with a
timeout.
Thanks
_______________________________________________
Virtualization mailing list
Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
