RE: [PATCH v4 03/17] iommufd: Unite all kernel-managed members into a struct

From: Liu, Yi L yi.l.liu@intel.com Sent: Thursday, September 21, 2023 3:51 PM

From: Nicolin Chen nicolinc@nvidia.com

The struct iommufd_hw_pagetable has been representing a kernel-managed HWPT, yet soon will be reused to represent a user-managed HWPT. These two types of HWPTs has the same IOMMUFD object type and an iommu_domain object, but have quite different attributes/members.

Add a union in struct iommufd_hw_pagetable and group all the existing kernel-managed members. One of the following patches will add another struct for user-managed members.

Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Yi Liu yi.l.liu@intel.com

Reviewed-by: Kevin Tian kevin.tian@intel.com