On Mon, Jul 08, 2024 at 08:57:21PM -0300, Jason Gunthorpe wrote: > I understand the block stack already does this using P2P and !P2P, but > that isn't quite enough here as we want to split principally based on > IOMMU or !IOMMU. Except for the powerpc bypass IOMMU or not is a global decision, and the bypass is per I/O. So I'm not sure what else you want there?