[vfio-users] GPU Passthrough, 2 GPUs to different virtual machines

[Torbjorn Jansson]

On 2017-12-31 12:25, Sascha Fröhlich wrote:
> Hi,
> 
> I am trying to get the following setup with a Xeon E5/ASUS X99-A II to work:
> 
> First slot:      GTX 1060     -> VM 1
> Second slot: GTX 1070 -> VM 2
> Third slot:     GT 710         -> Host
> 
> This is the latest ArchLinux. I had to use the propietary NVIDIA drivers
> and an additional Xorg configuration for the host GPU, because nouveau
> would flicker and crash. No need to blacklist anything.
> 
> IOMMU and VFIO works fine though, lspci -nn -k reports the two GTX GPUs
> using vfio-pci:
> https://gist.github.com/anonymous/89ebd0e18464cef3c5dde6897c39eb5f
> 

did you make sure that the proprietary nvidia driver is never attached/loaded 
for the 2 cards you intend to forward to a vm?
see: http://vfio.blogspot.se/2015/05/vfio-gpu-how-to-series-part-3-host.html