28 Oct
2024
28 Oct
'24
2:43 a.m.
From: Nicolin Chen nicolinc@nvidia.com Sent: Saturday, October 26, 2024 7:50 AM
Add a new ioctl for user space to do a vIOMMU allocation. It must be based on a nesting parent HWPT, so take its refcount.
IOMMU driver wanting to support vIOMMUs must define its IOMMU_VIOMMU_TYPE_ in the uAPI header and implement a viommu_alloc op in its iommu_ops.
Reviewed-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Nicolin Chen nicolinc@nvidia.com
Reviewed-by: Kevin Tian kevin.tian@intel.com