On Thu, Jul 15, 2021 at 06:49:54AM +0000, Tian, Kevin wrote: > No. You are right on this case. I don't think there is a way to > differentiate one mdev from the other if they come from the > same parent and attached by the same guest process. In this > case the fault could be reported on either mdev (e.g. the first > matching one) to get it fixed in the guest. If the IOMMU can't distinguish the two mdevs they are not isolated and would have to share a group. Since group sharing is not supported today this seems like a non-issue Jason
