RE: [PATCH v1 08/16] iommufd/viommu: Introduce IOMMUFD_OBJ_VCMDQ and its related struct

Tian, Kevin
2025-04-21T08:03:15Z

> From: Nicolin Chen <nicolinc@nvidia.com>
> Sent: Friday, April 11, 2025 2:38 PM
>
> Add a new IOMMUFD_OBJ_VCMDQ with an iommufd_vcmdq structure,
> representing
> a command queue type of physical HW passed to or shared with a user
> space
> VM.

what is the implication of "or shared with"? Do you intend to support
an usage in which a CMDQ is coordinated by both guest and host (which
sounds insane)?