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From:   "Tian, Kevin" <kevin.tian@intel.com>
To:     Jean-Philippe Brucker <jean-philippe@linaro.org>
CC:     Jason Gunthorpe <jgg@nvidia.com>,
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Subject: RE: [RFC v2] /dev/iommu uAPI proposal
Thread-Topic: [RFC v2] /dev/iommu uAPI proposal
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Date:   Wed, 28 Jul 2021 04:05:56 +0000
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> From: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Sent: Monday, July 26, 2021 4:15 PM
>=20
> Hi Kevin,
>=20
> On Fri, Jul 09, 2021 at 07:48:44AM +0000, Tian, Kevin wrote:
> > /dev/iommu provides an unified interface for managing I/O page tables f=
or
> > devices assigned to userspace. Device passthrough frameworks (VFIO,
> vDPA,
> > etc.) are expected to use this interface instead of creating their own =
logic to
> > isolate untrusted device DMAs initiated by userspace.
> >
> > This proposal describes the uAPI of /dev/iommu and also sample
> sequences
> > with VFIO as example in typical usages. The driver-facing kernel API
> provided
> > by the iommu layer is still TBD, which can be discussed after consensus=
 is
> > made on this uAPI.
>=20
> The document looks good to me, I don't have other concerns at the moment
>=20

Thanks for your review.