linux-kernel - RE: [PATCH v2 3/6] iommufd: Initializing and releasing IO page fault data

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Message-ID: <BN9PR11MB52761698732F1899E65DE5A38C8DA@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Wed, 13 Dec 2023 02:15:28 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Baolu Lu <baolu.lu@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        "Joel Granados" <j.granados@...sung.com>
CC:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        "Robin Murphy" <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Nicolin Chen <nicolinc@...dia.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 3/6] iommufd: Initializing and releasing IO page fault
 data

> From: Baolu Lu <baolu.lu@...ux.intel.com>
> Sent: Wednesday, December 13, 2023 10:05 AM
> >
> >> 2. This is not intended to work only with idxd and uacce. right?
> > It should work everywhere, I suspect Intel Team didn't hit this
> > because they are testing IDXD SIOV?
> 
> Yes.
> 
> > Can you guys also test it as a PF
> > assignment?
> 
> For PF assignment, probably the driver (vfio-pci) needs to enable iopf.
> 

We haven't merged anything for SIOV yet.

so the base of this series should be PCI functions (PF or VF) and vfio-pci
has to be extended with whatever required to support iopf.