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

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Subject: RE: [PATCH v2 04/11] iommufd: Pass parent hwpt and user_data to iommufd_hw_pagetable_alloc()
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Fri, 19 May 2023 09:34:38 +0000
Accept-language: en-US
Cc: "cohuck@xxxxxxxxxx" <cohuck@xxxxxxxxxx>, "eric.auger@xxxxxxxxxx" <eric.auger@xxxxxxxxxx>, "nicolinc@xxxxxxxxxx" <nicolinc@xxxxxxxxxx>, "kvm@xxxxxxxxxxxxxxx" <kvm@xxxxxxxxxxxxxxx>, "mjrosato@xxxxxxxxxxxxx" <mjrosato@xxxxxxxxxxxxx>, "chao.p.peng@xxxxxxxxxxxxxxx" <chao.p.peng@xxxxxxxxxxxxxxx>, "yi.y.sun@xxxxxxxxxxxxxxx" <yi.y.sun@xxxxxxxxxxxxxxx>, "peterx@xxxxxxxxxx" <peterx@xxxxxxxxxx>, "jasowang@xxxxxxxxxx" <jasowang@xxxxxxxxxx>, "shameerali.kolothum.thodi@xxxxxxxxxx" <shameerali.kolothum.thodi@xxxxxxxxxx>, "lulu@xxxxxxxxxx" <lulu@xxxxxxxxxx>, "suravee.suthikulpanit@xxxxxxx" <suravee.suthikulpanit@xxxxxxx>, "iommu@xxxxxxxxxxxxxxx" <iommu@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-kselftest@xxxxxxxxxxxxxxx" <linux-kselftest@xxxxxxxxxxxxxxx>, "Duan, Zhenzhong" <zhenzhong.duan@xxxxxxxxx>
In-reply-to: <20230511143844.22693-5-yi.l.liu@intel.com>
References: <20230511143844.22693-1-yi.l.liu@intel.com> <20230511143844.22693-5-yi.l.liu@intel.com>

> 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?

Follow-Ups:
- Re: [PATCH v2 04/11] iommufd: Pass parent hwpt and user_data to iommufd_hw_pagetable_alloc()
  - From: Nicolin Chen

References:
- [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Yi Liu
- [PATCH v2 04/11] iommufd: Pass parent hwpt and user_data to iommufd_hw_pagetable_alloc()
  - From: Yi Liu

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