linux-kernel - RE: [RFC 00/20] Introduce /dev/iommu for userspace I/O address space management

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Date:   Sun, 19 Sep 2021 06:45:53 +0000
From:   "Liu, Yi L" <yi.l.liu@...el.com>
To:     "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "jgg@...dia.com" <jgg@...dia.com>, "hch@....de" <hch@....de>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "joro@...tes.org" <joro@...tes.org>
CC:     "jean-philippe@...aro.org" <jean-philippe@...aro.org>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        "parav@...lanox.com" <parav@...lanox.com>,
        "lkml@...ux.net" <lkml@...ux.net>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "lushenming@...wei.com" <lushenming@...wei.com>,
        "eric.auger@...hat.com" <eric.auger@...hat.com>,
        "corbet@....net" <corbet@....net>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "yi.l.liu@...ux.intel.com" <yi.l.liu@...ux.intel.com>,
        "Tian, Jun J" <jun.j.tian@...el.com>, "Wu, Hao" <hao.wu@...el.com>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        "jacob.jun.pan@...ux.intel.com" <jacob.jun.pan@...ux.intel.com>,
        "kwankhede@...dia.com" <kwankhede@...dia.com>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "dwmw2@...radead.org" <dwmw2@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>,
        "david@...son.dropbear.id.au" <david@...son.dropbear.id.au>,
        "nicolinc@...dia.com" <nicolinc@...dia.com>
Subject: RE: [RFC 00/20] Introduce /dev/iommu for userspace I/O address space
 management

> From: Liu, Yi L <yi.l.liu@...el.com>
> Sent: Sunday, September 19, 2021 2:38 PM
[...]
> [Series Overview]
>
> * Basic skeleton:
>   0001-iommu-iommufd-Add-dev-iommu-core.patch
> 
> * VFIO PCI creates device-centric interface:
>   0002-vfio-Add-device-class-for-dev-vfio-devices.patch
>   0003-vfio-Add-vfio_-un-register_device.patch
>   0004-iommu-Add-iommu_device_get_info-interface.patch
>   0005-vfio-pci-Register-device-to-dev-vfio-devices.patch
> 
> * Bind device fd with iommufd:
>   0006-iommu-Add-iommu_device_init-exit-_user_dma-interface.patch
>   0007-iommu-iommufd-Add-iommufd_-un-bind_device.patch
>   0008-vfio-pci-Add-VFIO_DEVICE_BIND_IOMMUFD.patch
> 
> * IOASID allocation:
>   0009-iommu-Add-page-size-and-address-width-attributes.patch
>   0010-iommu-iommufd-Add-IOMMU_DEVICE_GET_INFO.patch
>   0011-iommu-iommufd-Add-IOMMU_IOASID_ALLOC-FREE.patch
>   0012-iommu-iommufd-Add-IOMMU_CHECK_EXTENSION.patch
> 
> * IOASID [de]attach:
>   0013-iommu-Extend-iommu_at-de-tach_device-for-multiple-de.patch
>   0014-iommu-iommufd-Add-iommufd_device_-de-attach_ioasid.patch
>   0015-vfio-pci-Add-VFIO_DEVICE_-DE-ATTACH_IOASID.patch
> 
> * DMA (un)map:
>   0016-vfio-type1-Export-symbols-for-dma-un-map-code-sharin.patch
>   0017-iommu-iommufd-Report-iova-range-to-userspace.patch
>   0018-iommu-iommufd-Add-IOMMU_-UN-MAP_DMA-on-IOASID.patch
> 
> * Report the device info in vt-d driver to enable whole series:
>   0019-iommu-vt-d-Implement-device_info-iommu_ops-callback.patch
> 
> * Add doc:
>   0020-Doc-Add-documentation-for-dev-iommu.patch

Please refer to the above patch overview. sorry for the duplicated contents.

thanks,
Yi Liu