5 Sep
2024
5 Sep
'24
6:04 p.m.
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