Open Stack

On Tue, Apr 09, 2013 at 10:59:29AM -0700, Ian Wells wrote:
> On 9 April 2013 10:27, Jim Fehlig <jfehlig at suse.com> wrote:
> 
> > On 04/09/2013 03:12 AM, Guillaume Thouvenin wrote:
> >
> >> Hello,
> >>
> >>  Here is my use case. I have a machine with GPU and I want to provide an
> >> instance that can start an X server and use the GPU to allow 3D rendering.
> >>
> >>  The BIOS installed on my machine doesn't allow IOMMU. So the solution I
> >> see is to use a compute node with the Linux container driver.
> >>
> >
> > A blueprint already exists for this feature
> >
> > https://blueprints.launchpad.**net/nova/+spec/pci-**passthrough-and-sr-iov<https://blueprints.launchpad.net/nova/+spec/pci-passthrough-and-sr-iov>
> >
> 
> I don't believe this would work without IOMMU support.

Correct, libvirt will refuse to let you assign any devices to a
guest, unless it can be done safely, which means you need
an IOMMU.

Daniel
-- 
|: http://berrange.com      -o-    http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org              -o-             http://virt-manager.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org       -o-       http://live.gnome.org/gtk-vnc :|