[openstack-dev] Instance with access to GPU, libvirt and hostdev

Guillaume Thouvenin guillaume.thouvenin at bull.net
Mon Apr 15 10:41:11 UTC 2013

On 13/04/2013 00:39, Ian Wells wrote:

> Firstly, it's increasingly rare to find new server hardware missing
> IOMMUs, so you may be solving a problem that most people don't have.
> That's up to you...

Yes sure. I posted to the mailing-list to know if it can concerns other 
people and/or if few are already working on this. So I think I will try 
to solve the problem. It will be a good exercise to go deeper in Nova :)

> Secondly, have you passed intel_iommu=on to your kernel (or whatever the
> right flag is)?  I know the Ubuntu kernel, at least, needs the extra
> boot parameter to enable it.

Yes I tried it and I also tried iommu=calgary but the problem is that 
the BIOS doesn't pass any information about IOMMU to the kernel (even if 
everything is enabled in the BIOS).


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