On Thu, Sep 05, 2024 at 02:41:00PM -0300, Jason Gunthorpe wrote: > > > > + * @out_viommu_id: Output virtual IOMMU ID for the allocated object > > > > + * > > > > + * Allocate a virtual IOMMU object that holds a (shared) nesting parent HWPT > > > > > > Allocate a virtual IOMMU object that represents the underlying > > > physical IOMMU's virtualization support. The vIOMMU object is a > > > security isolated slice of the physical IOMMU HW that is unique to a > > > specific VM. Operations global to the IOMMU are connected to the > > > vIOMMU, such as: > > > - Security namespace for guest owned ID, eg guest controlled cache tags > > > - Virtualization of various platforms IDs like RIDs and others > > > - direct assigned invalidation queues > > > - direct assigned interrupts > > > - non-affiliated event reporting > > > - Delivery of paravirtualized invalidation > > > > Ack. > > Also write something about the HWPT.. Assuming it's about sharing parent HWPT, ack. Nicolin
