On Mon, Nov 16, 2020 at 07:31:49AM +0000, Tian, Kevin wrote: > > The subdevices require PASID & IOMMU in native, but inside the guest there > > is no > > need for IOMMU unless you want to build SVM on top. subdevices work > > without > > any vIOMMU or hypercall in the guest. Only because they look like normal > > PCI devices we could map interrupts to legacy MSIx. > > Guest managed subdevices on PF/VF requires vIOMMU. Why? I've never heard we need vIOMMU for our existing SRIOV flows in VMs?? Jason
