> From: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Sent: Monday, July 24, 2023 7:04 PM > > This reports device's reserved IOVA regions to userspace. This is needed > in the nested translation as userspace owns stage-1 HWPT, and userspace > needs to exclude the reserved IOVA regions in the stage-1 HWPT hence > exclude > them in the device's DMA address space. > > This can also be used to figure out allowed IOVAs of an IOAS. We may need a special type to mark SW_MSI since it requires identity mapping in stage-1 instead of being reserved.
