RE: [virtio-comment] RE: [PATCH v3 2/2] content: Support enabling virtqueue after DRIVER_OK stage

[Parav Pandit <parav@nvidia.com>]

> From: Michael S. Tsirkin <mst@redhat.com>
> Sent: Thursday, October 26, 2023 11:54 AM

> > Let me work on more mature interface that solves following challenges.
> > 1. ability to create a virtqueue dynamically after driver_ok 2.
> > ability to create virtqueue with one or multiple physical addresses 3.
> > ability for the device to return error if it cannot create dynamic vq
> > creation
> >
> > The question is, do we need this generic facility beyond virtio-net?
> 
> Wow, sounds rather complex.

Yes and no.

It is if there is any use case for generic devices.
For all the devices which already has cvq, it is fairly straightforward.
All dynamic vqs can be created and destroyed using a simple cvq commands.