Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure

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Subject: Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Mon, 26 Jun 2023 10:05:39 -0300
Cc: Nicolin Chen <nicolinc@xxxxxxxxxx>, "Liu, Yi L" <yi.l.liu@xxxxxxxxx>, "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>, "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: <BN9PR11MB5276D6040E41595B929843168C26A@BN9PR11MB5276.namprd11.prod.outlook.com>
References: <ZGdiS2m8jcd5OOt5@nvidia.com> <BN9PR11MB5276A74B2DA86C79908A420B8C419@BN9PR11MB5276.namprd11.prod.outlook.com> <ZH9AGWf1yRDu/86q@nvidia.com> <BN9PR11MB52763C7B838B04D3200322FD8C58A@BN9PR11MB5276.namprd11.prod.outlook.com> <ZJBL8QLLBiwRsUSI@nvidia.com> <BN9PR11MB527663567ECB8AD52D3170818C5CA@BN9PR11MB5276.namprd11.prod.outlook.com> <ZJGf3sgLKr9HLZuE@nvidia.com> <BN9PR11MB5276B852A32F53BE8EAA1A7D8C5DA@BN9PR11MB5276.namprd11.prod.outlook.com> <ZJMvtMe5QHPM0OEJ@Asurada-Nvidia> <BN9PR11MB5276D6040E41595B929843168C26A@BN9PR11MB5276.namprd11.prod.outlook.com>

On Mon, Jun 26, 2023 at 06:42:58AM +0000, Tian, Kevin wrote:

> I'm not sure whether the MSI region needs a special MSI type or
> just a general RESV_DIRECT type for 1:1 mapping, though.

It probably always needs a special type :(

Jason

References:
- Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Jason Gunthorpe
- RE: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Tian, Kevin
- Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Jason Gunthorpe
- RE: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Tian, Kevin
- Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Jason Gunthorpe
- RE: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Tian, Kevin
- Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Jason Gunthorpe
- RE: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Tian, Kevin
- Re: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Nicolin Chen
- RE: [PATCH v2 00/11] iommufd: Add nesting infrastructure
  - From: Tian, Kevin

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