[ovirt-users] Re: vGPU on ovirt 4.3

Again, that's the easy part that works just fine. It's afterwards when you try to install the Nvidia driver when there might be trouble because the driver refused to load on GPUs that aren't permitted to operate inside a VM, quite independent of the hypervisor (same issue with VMware, VirtualBox, KVM). For that there are tricks you'll find on the Internet on how to cheat the Nvidia driver into believing it's running on a physical machine but on KVM that implies editing the XML config... which in the case of oVirt seems to be generated at startup. So I guess the hooking mechanism can be used to take care of that, but I've not progressed to that stage myself, mostly because the GPUs I use in the corporate lab are whitelisted by Nvidia. And just to give a little credit: Pass-through works very well with oVirt 4.3, only moving (inactive) VMs from host-to-host is a little more involved, while GPU live-migration unfortunately is out of the question. That makes perfect sense for NICs and storage adapters, for GPUs one might argue that their state could be migrated, too. But Linux doesn't really understand heterogenous accelerators yet, so oVirt can't do better.