On Wed, May 22, 2024 at 08:40:00AM +0000, Tian, Kevin wrote: > > From: Nicolin Chen <nicolinc@xxxxxxxxxx> > > Sent: Saturday, April 13, 2024 11:47 AM > > > > This is an experimental RFC series for VIOMMU infrastructure, using NVIDIA > > Tegra241 (Grace) CMDQV as a test instance. > > > > VIOMMU obj is used to represent a virtual interface (iommu) backed by an > > underlying IOMMU's HW-accelerated feature for virtualizaion: for example, > > NVIDIA's VINTF (v-interface for CMDQV) and AMD"s vIOMMU. > > > > VQUEUE obj is used to represent a virtual command queue (buffer) backed > > by > > an underlying IOMMU command queue to passthrough for VMs to use > > directly: > > for example, NVIDIA's Virtual Command Queue and AMD's Command Buffer. > > > > is VCMDQ more accurate? AMD also supports fault queue passthrough > then VQUEUE sounds broader than a cmd queue... Is there a reason VQUEUE couldn't handle the fault/etc queues too? The only difference is direction, there is still a doorbell/etc. Jason
