On Tue, 18 Nov 2025 10:19:56 -0500 Eric Farman <[email protected]> wrote:
> > So I think it would really make sense to prevent passing through > > virtio-ccw devices with vfio-ccw. Eric what is your take? > > It's true that the only -supported- use case is passthrough DASD, and we > allow other device types to > be passed through. The only ones we fence off are what we know aren't going > to work, like FCPs. I think we can add virto-ccw to that known to not work list ;) > IIRC > we'd talked a few years ago about a plan for a more detailed allow-list of > passthrough devices and > configurations, but that fell off the back of the todo list. Short of dusting > all that off, I don't > know that blocking virtio-ccw from vfio is going to buy us anything that > Thomas' patch doesn't > already provide. See your comment form later today :) Would prevent ending up with a most likely dysfunctional device at best. Regards, Halil
