We are adding support for a new adapter to the hfi1 driver. This new adapter supports SR-IOV and we need a way to communicate between VFs and PFO. There are some resources that need to be requested from the VFs and some notifications needed from PF0 to the VFs. I am looking at using virtqueues to allow a VF running in a VM to communicate with PF0 on the host, but am not sure how virtio devices/drivers should be used for this. Is there a general-purpose message-passing virtio device that can be used for this? Or do we have to create a new device specifically for our driver to use? Or is there some other communication mechanism that is better suited for this? Thanks, Doug External recipient
