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

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To: "Liu, Yi L" <yi.l.liu@xxxxxxxxx>, "joro@xxxxxxxxxx" <joro@xxxxxxxxxx>, "alex.williamson@xxxxxxxxxx" <alex.williamson@xxxxxxxxxx>, "jgg@xxxxxxxxxx" <jgg@xxxxxxxxxx>, "robin.murphy@xxxxxxx" <robin.murphy@xxxxxxx>, "baolu.lu@xxxxxxxxxxxxxxx" <baolu.lu@xxxxxxxxxxxxxxx>
Subject: RE: [PATCH v7 8/8] iommu/vt-d: Disallow read-only mappings to nest parent domain
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Wed, 25 Oct 2023 07:35:33 +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>, "Martins, Joao" <joao.m.martins@xxxxxxxxxx>
In-reply-to: <20231024151412.50046-9-yi.l.liu@intel.com>
Thread-index: AQHaBozLQMNtQpVGt0+9MBdVYq4nwrBaHj/w
Thread-topic: [PATCH v7 8/8] iommu/vt-d: Disallow read-only mappings to nest parent domain

> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> 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"

Follow-Ups:
- Re: [PATCH v7 8/8] iommu/vt-d: Disallow read-only mappings to nest parent domain
  - From: Yi Liu

References:
- [PATCH v7 0/8] Add Intel VT-d nested translation (part 1/2)
  - From: Yi Liu
- [PATCH v7 8/8] iommu/vt-d: Disallow read-only mappings to nest parent domain
  - From: Yi Liu

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