On Mon, Jan 30, 2023 at 03:13:22PM +0000, Robin Murphy wrote: > Either way, the more I think about this the more I'm starting to agree that > adding more domain types for iommu-dma policy is a step in the wrong > direction. If I may, I'd like to fall back on the "or at least some definite > internal flag" part of my original suggestion :) Yes please, lets try to remove IOMMU_DOMAIN_DMA, not add more :) At this point we should probably just sort of hackily add a ops flag to indicate single queue and when we fixup the policy logic we can make it a user selectable policy as well. Jason