> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Thursday, May 23, 2024 8:59 PM > > > > now. If someone needs them linked someday we can add a viommu_id to > > > the create pri queue command. > > > > I'm more worried about the potential conflict between the vqueue > > object here and the fault queue object in Baolu's series, if we want > > to introduce vIOMMU concept to platforms which lack of the hw > > support. > > I assume the vPPRLog will steal all the PRI before it reaches the > kernel, so once this is turned on Lu's path won't see anything. > > I don't know if AMD can turn vPPRLog on individually or if it is a > whole package once they switch on VIOMMU.. > their spec says: " This feature is supported if MMIO Offset 0030h[vIommuSup]=1. When enabled, DTE[vImuEn]=1 indicates the guest owning this device is a vIOMMU enabled guest, and IOMMU should write event and peripheral page requests associated with this device into the guest data structures. " so it's configured per device.
