linux-kernel - Re: [PATCH v7 8/8] iommu/vt-d: Disallow read-only mappings to nest parent domain

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Message-ID: <c1e638f8-594a-4b09-bfe5-924ca68956ba@intel.com>
Date:   Wed, 25 Oct 2023 17:03:04 +0800
From:   Yi Liu <yi.l.liu@...el.com>
To:     "Tian, Kevin" <kevin.tian@...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 v7 8/8] iommu/vt-d: Disallow read-only mappings to nest
 parent domain


On 2023/10/25 15:35, Tian, Kevin wrote:
>> From: Liu, Yi L <yi.l.liu@...el.com>
>> Sent: Tuesday, October 24, 2023 11:14 PM
>>
>> +/**
>> + * enum iommu_hw_info_vtd_flags - Flags for VT-d hw_info
>> + * @IOMMU_HW_INFO_VTD_ERRATA_772415_SPR17: If set, disallow
>> nesting on domains
>> + *                                   with read-only mapping.
> 
> with how it's implemented now the description should be revised to:
> 
> "If set, disallow read-only mappings on a nested_parent domain"

sure.

-- 
Regards,
Yi Liu