On Fri, Aug 07, 2020 at 10:54:51AM -0700, Dey, Megha wrote: > So from the hierarchical domain standpoint, we will have: > - For DSA device: vector->intel-IR->IDXD > - For Jason's device: root domain-> domain A-> Jason's device's IRQ domain > - For any other intel IMS device in the future which > does not require interrupt remapping: vector->new device IRQ domain > requires interrupt remapping: vector->intel-IR->new device IRQ domain I think you need a better classification than Jason's device or Intel's device :) Shouldn't the two cases be either you take the parent domain from the IOMMU or you take the parent domain from the pci device? What other choices could a PCI driver make? Jason
