[virtio-dev] RE: [virtio-comment] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE

Parav Pandit
2023-09-11T06:59:35Z

> From: Jason Wang <jasowang@redhat.com>
> Sent: Monday, September 11, 2023 12:01 PM

> Customers don't want to have admin stuff, SR-IOV or PASID in the guest in order
> to migrate a single virtio device in the nest.
It is not the customer want/does not want.
The pci transport simply do not allow one to bifurcate the PCI device to do things like resetting the device and still letting partial things run like some admin commands or registers.
So one needs to do tricks of mediation and build things on such depdency for nested use case.

Anyway mediation approach of AQ etc does not address the basic passthrough requirements.
So both are still orthogonal proposals addressing different use cases.