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

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Message-ID: <BN9PR11MB527605D349265147DBB91C5F8CC3A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Tue, 26 Sep 2023 07:46:16 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     "Liu, Yi L" <yi.l.liu@...el.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "jgg@...dia.com" <jgg@...dia.com>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>
CC:     "cohuck@...hat.com" <cohuck@...hat.com>,
        "eric.auger@...hat.com" <eric.auger@...hat.com>,
        "nicolinc@...dia.com" <nicolinc@...dia.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "mjrosato@...ux.ibm.com" <mjrosato@...ux.ibm.com>,
        "chao.p.peng@...ux.intel.com" <chao.p.peng@...ux.intel.com>,
        "yi.y.sun@...ux.intel.com" <yi.y.sun@...ux.intel.com>,
        "peterx@...hat.com" <peterx@...hat.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "shameerali.kolothum.thodi@...wei.com" 
        <shameerali.kolothum.thodi@...wei.com>,
        "lulu@...hat.com" <lulu@...hat.com>,
        "suravee.suthikulpanit@....com" <suravee.suthikulpanit@....com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "Duan, Zhenzhong" <zhenzhong.duan@...el.com>,
        "Martins, Joao" <joao.m.martins@...cle.com>
Subject: RE: [PATCH v4 03/17] iommufd: Unite all kernel-managed members into a
 struct

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

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