[vfio-users] vfio binding undone

[Zycorax Tokoroa]

I have tried setting up things from your points with the same result. 
During early boot vfio-pci shows to have bound to the GPU, but once the 
OS has loaded lspci shows that nouveau took over. I regenerated all the 
initramfs at every different try, this one included, as well as the grub 
config file where applicable

> On Mon, May 2, 2016 at 2:40 AM, Zycorax Tokoroa <zycorax at phoxden.xyz
> <mailto:zycorax at phoxden.xyz>> wrote:
>
>     I seem to have troubles in getting vfio to work under ubuntu.
>     I have two discrete graphic cards, a GTX 970 (to be passed trough)
>     and a GTX 960 for the host. The GTX 960 is in the primary slot, and
>     is the card trough which I see grub and the early linux boot.
>
>     I am currently using kubuntu 16.04 with the following kernel parameters:
>     intel_iommu=on rd.modules-load=vfio-pci
>     vfio-pci.ids=10de:13c2:1043:8508,10de:0fbb:1043:8508,1b21:1142:1043:85fd
>
>     ...
>
>     I have tried using the driver_override mechanism as in Alex's blog
>     but it fails with the same result.
>
>
> Hi Zycorax,
>
> I have 3 NVIDIA GPUs installed in my host (GT 610 for the host, GT 730
> for Mac OS X El Capitan guest, and GTX 980 Ti for Windows 10 guest), and
> here are the things that I do:
>
> 1.) I put the vfio-pci ids and vfio-pci disable_vga=1 on the
> /etc/modprobe.d/vfio-pci.conf.
>
> 2.) I put intel_iommu=on iommu=pt rd.modules-load=vfio-pci on the kernel
> command line.
>
> 3.) Regenerate initramfs of the kernel everytime I make changes in
> vfio-pci ids.
>
> I found myself failed to bind devices to VFIO if I forgot to update
> initramfs after changing vfio-pci ids in /etc/modprobe/vfio-pci.conf.
> Have you tried updating your initramfs image?
>
> Best regards,
> Okky Hendriansyah