RE: [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation

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To: Jason Gunthorpe <jgg@xxxxxxxxxx>, "Liu, Yi L" <yi.l.liu@xxxxxxxxx>
Subject: RE: [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Wed, 25 Oct 2023 07:34:20 +0000
Accept-language: en-US
Cc: "joro@xxxxxxxxxx" <joro@xxxxxxxxxx>, "alex.williamson@xxxxxxxxxx" <alex.williamson@xxxxxxxxxx>, "robin.murphy@xxxxxxx" <robin.murphy@xxxxxxx>, "baolu.lu@xxxxxxxxxxxxxxx" <baolu.lu@xxxxxxxxxxxxxxx>, "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: <20231024230319.GW3952@nvidia.com>
Thread-index: AQHaBozMdUHOtbvzQU22Xk0Ng6MCWLBZj3SAgACOfFA=
Thread-topic: [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation

> From: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Sent: Wednesday, October 25, 2023 7:03 AM
>
> @@ -4849,6 +4855,7 @@ static void *intel_iommu_hw_info(struct device
> *dev, u32 *length, u32 *type)
>  	if (!vtd)
>  		return ERR_PTR(-ENOMEM);
> 
> +	vtd->flags = IOMMU_HW_INFO_VTD_ERRATA_772415_SPR17;

this doesn't belong to this patch. otherwise looks good:

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

Follow-Ups:
- Re: [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation
  - From: Jason Gunthorpe

References:
- [PATCH v7 0/8] Add Intel VT-d nested translation (part 1/2)
  - From: Yi Liu
- [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation
  - From: Yi Liu
- Re: [PATCH v7 7/8] iommu/vt-d: Add nested domain allocation
  - From: Jason Gunthorpe

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