Re: [vfio-users] GPU driver crashes when running a second VM

[Brian Yglesias]

Thanks for the reply.

I'm 95% sure it is a compatibility issue with the chipset, considering it happens on all 3 of the X58 motherboards I've tested it with.

Unfortunately, I can't find any errors or anything that would point me in the right direction, so I've been flying blind.

I gave up on it a year ago, and recently decided to try one more dist-upgrade, only to find that the problem persists.

Even if it can never be made to work on this platform, it would be nice to know why at this point.

-Brian

On 14/11/17 09:10, Brian Yglesias wrote:
> To put it another way, running concurrent VMs when at least one VM has an assigned GPU will always result in a GPU driver crash, unless all VMs and all their attached media reside on the root disk.  I've been able to replicate this consistently across three motherboards, all with the X58 chipset (I don't have anything else on hand to test with, and at this point I suspect it's a problem with the chipset).

I have been using different physical disks to back different virtual
machines that ran at the same time in order to distribute IO which would
otherwise bottleneck and I have never had such issues. In fact, I think
I've never used the same disk for VM storage and for the hypervisor, so
the issue you are facing must be somewhat specific to your setup,
physical or software-wise.

Zycorax Tokoroa



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End of vfio-users Digest, Vol 28, Issue 11
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