From: Alex Williamson <alex.williamson@redhat.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: kvm@vger.kernel.org, mst@redhat.com, maorg@nvidia.com,
virtualization@lists.linux-foundation.org, jiri@nvidia.com,
leonro@nvidia.com
Subject: Re: [PATCH V1 vfio 0/9] Introduce a vfio driver over virtio devices
Date: Mon, 23 Oct 2023 10:09:13 -0600 [thread overview]
Message-ID: <20231023100913.39dcefba.alex.williamson@redhat.com> (raw)
In-Reply-To: <20231023154257.GZ3952@nvidia.com>
On Mon, 23 Oct 2023 12:42:57 -0300
Jason Gunthorpe <jgg@nvidia.com> wrote:
> On Mon, Oct 23, 2023 at 09:33:23AM -0600, Alex Williamson wrote:
>
> > > Alex,
> > > Are you fine to leave the provisioning of the VF including the control
> > > of its transitional capability in the device hands as was suggested by
> > > Jason ?
> >
> > If this is the standard we're going to follow, ie. profiling of a
> > device is expected to occur prior to the probe of the vfio-pci variant
> > driver, then we should get the out-of-tree NVIDIA vGPU driver on board
> > with this too.
>
> Those GPU drivers are using mdev not vfio-pci..
The SR-IOV mdev vGPUs rely on the IOMMU backing device support which
was removed from upstream. They only exist in the mdev form on
downstreams which have retained this interface for compatibility and
continuity. I'm not aware of any other means by which the SR-IOV RID
can be used in the mdev model, therefore only the pre-SR-IOV GPUs
should continue to use the mdev interface.
> mdev doesn't have a way in its uapi to configure the mdev before it is
> created.
Of course. Thanks,
Alex
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WARNING: multiple messages have this Message-ID (diff)
From: Alex Williamson <alex.williamson@redhat.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Yishai Hadas <yishaih@nvidia.com>,
mst@redhat.com, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org, parav@nvidia.com,
feliu@nvidia.com, jiri@nvidia.com, kevin.tian@intel.com,
joao.m.martins@oracle.com, si-wei.liu@oracle.com,
leonro@nvidia.com, maorg@nvidia.com, jasowang@redhat.com
Subject: Re: [PATCH V1 vfio 0/9] Introduce a vfio driver over virtio devices
Date: Mon, 23 Oct 2023 10:09:13 -0600 [thread overview]
Message-ID: <20231023100913.39dcefba.alex.williamson@redhat.com> (raw)
In-Reply-To: <20231023154257.GZ3952@nvidia.com>
On Mon, 23 Oct 2023 12:42:57 -0300
Jason Gunthorpe <jgg@nvidia.com> wrote:
> On Mon, Oct 23, 2023 at 09:33:23AM -0600, Alex Williamson wrote:
>
> > > Alex,
> > > Are you fine to leave the provisioning of the VF including the control
> > > of its transitional capability in the device hands as was suggested by
> > > Jason ?
> >
> > If this is the standard we're going to follow, ie. profiling of a
> > device is expected to occur prior to the probe of the vfio-pci variant
> > driver, then we should get the out-of-tree NVIDIA vGPU driver on board
> > with this too.
>
> Those GPU drivers are using mdev not vfio-pci..
The SR-IOV mdev vGPUs rely on the IOMMU backing device support which
was removed from upstream. They only exist in the mdev form on
downstreams which have retained this interface for compatibility and
continuity. I'm not aware of any other means by which the SR-IOV RID
can be used in the mdev model, therefore only the pre-SR-IOV GPUs
should continue to use the mdev interface.
> mdev doesn't have a way in its uapi to configure the mdev before it is
> created.
Of course. Thanks,
Alex
next prev parent reply other threads:[~2023-10-23 16:09 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-17 13:42 [PATCH V1 vfio 0/9] Introduce a vfio driver over virtio devices Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 1/9] virtio-pci: Fix common config map for modern device Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 2/9] virtio: Define feature bit for administration virtqueue Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 3/9] virtio-pci: Introduce admin virtqueue Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 4/9] virtio-pci: Introduce admin command sending function Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 5/9] virtio-pci: Introduce admin commands Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 6/9] virtio-pci: Introduce APIs to execute legacy IO " Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 20:33 ` kernel test robot
2023-10-17 20:33 ` kernel test robot
2023-10-22 1:14 ` kernel test robot
2023-10-22 1:14 ` kernel test robot
2023-10-24 21:01 ` Michael S. Tsirkin
2023-10-24 21:01 ` Michael S. Tsirkin
2023-10-25 9:18 ` Yishai Hadas via Virtualization
2023-10-25 10:17 ` Michael S. Tsirkin
2023-10-25 10:17 ` Michael S. Tsirkin
2023-10-25 13:00 ` Yishai Hadas
2023-10-25 13:00 ` Yishai Hadas via Virtualization
2023-10-25 13:04 ` Michael S. Tsirkin
2023-10-25 13:04 ` Michael S. Tsirkin
2023-10-25 13:44 ` Michael S. Tsirkin
2023-10-25 13:44 ` Michael S. Tsirkin
2023-10-25 14:03 ` Yishai Hadas
2023-10-25 14:03 ` Yishai Hadas via Virtualization
2023-10-25 16:31 ` Michael S. Tsirkin
2023-10-25 16:31 ` Michael S. Tsirkin
2023-10-25 9:36 ` Yishai Hadas
2023-10-25 9:36 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 7/9] vfio/pci: Expose vfio_pci_core_setup_barmap() Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 8/9] vfio/pci: Expose vfio_pci_iowrite/read##size() Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 13:42 ` [PATCH V1 vfio 9/9] vfio/virtio: Introduce a vfio driver over virtio devices Yishai Hadas
2023-10-17 13:42 ` Yishai Hadas via Virtualization
2023-10-17 20:24 ` Alex Williamson
2023-10-17 20:24 ` Alex Williamson
2023-10-18 9:01 ` Yishai Hadas
2023-10-18 9:01 ` Yishai Hadas via Virtualization
2023-10-18 12:51 ` Alex Williamson
2023-10-18 12:51 ` Alex Williamson
2023-10-18 13:06 ` Parav Pandit
2023-10-18 13:06 ` Parav Pandit via Virtualization
2023-10-18 16:33 ` Jason Gunthorpe
2023-10-18 18:29 ` Alex Williamson
2023-10-18 18:29 ` Alex Williamson
2023-10-18 19:28 ` Jason Gunthorpe
2023-10-24 19:57 ` Alex Williamson
2023-10-24 19:57 ` Alex Williamson
2023-10-25 14:35 ` Yishai Hadas
2023-10-25 14:35 ` Yishai Hadas via Virtualization
2023-10-25 16:28 ` Michael S. Tsirkin
2023-10-25 16:28 ` Michael S. Tsirkin
2023-10-25 19:13 ` Alex Williamson
2023-10-25 19:13 ` Alex Williamson
2023-10-26 12:08 ` Yishai Hadas
2023-10-26 12:08 ` Yishai Hadas via Virtualization
2023-10-26 12:12 ` Michael S. Tsirkin
2023-10-26 12:12 ` Michael S. Tsirkin
2023-10-26 12:40 ` Parav Pandit
2023-10-26 12:40 ` Parav Pandit via Virtualization
2023-10-26 13:15 ` Michael S. Tsirkin
2023-10-26 13:15 ` Michael S. Tsirkin
2023-10-26 13:28 ` Parav Pandit
2023-10-26 13:28 ` Parav Pandit via Virtualization
2023-10-26 15:06 ` Michael S. Tsirkin
2023-10-26 15:06 ` Michael S. Tsirkin
2023-10-26 15:09 ` Parav Pandit
2023-10-26 15:09 ` Parav Pandit via Virtualization
2023-10-26 15:46 ` Michael S. Tsirkin
2023-10-26 15:46 ` Michael S. Tsirkin
2023-10-26 15:56 ` Parav Pandit
2023-10-26 15:56 ` Parav Pandit via Virtualization
2023-10-26 17:55 ` Alex Williamson
2023-10-26 17:55 ` Alex Williamson
2023-10-26 19:49 ` Michael S. Tsirkin
2023-10-26 19:49 ` Michael S. Tsirkin
2023-10-29 16:13 ` Yishai Hadas via Virtualization
2023-10-29 16:13 ` Yishai Hadas
2023-10-22 8:20 ` [PATCH V1 vfio 0/9] " Yishai Hadas
2023-10-22 8:20 ` Yishai Hadas via Virtualization
2023-10-22 9:12 ` Michael S. Tsirkin
2023-10-22 9:12 ` Michael S. Tsirkin
2023-10-23 15:33 ` Alex Williamson
2023-10-23 15:33 ` Alex Williamson
2023-10-23 15:42 ` Jason Gunthorpe
2023-10-23 16:09 ` Alex Williamson [this message]
2023-10-23 16:09 ` Alex Williamson
2023-10-23 16:20 ` Jason Gunthorpe
2023-10-23 16:45 ` Alex Williamson
2023-10-23 16:45 ` Alex Williamson
2023-10-23 17:27 ` Jason Gunthorpe
2023-10-25 8:34 ` Tian, Kevin
2023-10-25 8:34 ` Tian, Kevin
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