On Tue, Mar 15, 2022 at 10:39:18AM -0400, Matthew Rosato wrote: > > That is something that should be modeled as a nested iommu domain. > > > > Querying the formats and any control logic for this should be on the > > iommu side not built into VFIO. > > I agree that the DTSM is really controlled by what the IOMMU domain can > support (e.g. what guest table formats it can actually operate on) and so > the DTSM value should come from there vs out of KVM; but is there harm in > including the query response data here along with the rest of the response > information for 'query this zPCI group'? 'Harm'? No, but I think it is wrong encapsulation and layering. Jason
