linux-kernel - RE: [RFC 0/7] Add SIOV virtual device support

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Message-ID: <BN9PR11MB5276A19AC2CA9DA2B528822F8CCEA@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Mon, 9 Oct 2023 23:33:43 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Jason Gunthorpe <jgg@...dia.com>, "Liu, Yi L" <yi.l.liu@...el.com>
CC:     "joro@...tes.org" <joro@...tes.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>,
        "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: [RFC 0/7] Add SIOV virtual device support

> From: Jason Gunthorpe <jgg@...dia.com>
> Sent: Monday, October 9, 2023 9:21 PM
> 
> On Mon, Oct 09, 2023 at 01:51:16AM -0700, Yi Liu wrote:
> > Intel SIOV allows creating virtual devices of which the vRID is
> > represented by a pasid of a physical device. It is called as SIOV
> > virtual device in this series. Such devices can be bound to an iommufd
> > as physical device does and then later be attached to an IOAS/hwpt
> > using that pasid. Such PASIDs are called as default pasid.
> 
> I would want to see the idxd implementation too..
> 

It still needs some time (and unfortunately the guy working on idxd
is currently on a long vacation).

Instead of waiting we want to seek early comments on the iommufd
changes given that part is relatively self-contained. Same as what
Reinette is doing for IMS.

Certainly this is not for merging w/o having a driver user. 😊