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

[Tian, Kevin]

> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> Sent: Thursday, September 21, 2023 3:51 PM
> 
> From: Nicolin Chen <nicolinc@xxxxxxxxxx>
> 
> 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@xxxxxxxxxx>
> Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>