RE: [PATCH v2 04/11] iommufd: Pass parent hwpt and user_data to iommufd_hw_pagetable_alloc()

[Tian, Kevin]

> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> Sent: Thursday, May 11, 2023 10:39 PM
> @@ -89,9 +101,15 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx
> *ictx, struct iommufd_ioas *ioas,
>  	/* Pairs with iommufd_hw_pagetable_destroy() */
>  	refcount_inc(&ioas->obj.users);
>  	hwpt->ioas = ioas;

presumably a user hwpt doesn't need store ioas?