[vfio-users] PCI Passthrough of GTX 980 on guest getting "unable to determine the device handle"

[Zachary Boley]

are you saying its not recognized in the host? but it works in the guest
perfectly? ooor? I'm not quite understanding the problem sorry

On Wed, Dec 7, 2016 at 1:45 PM, Kevin Vasko <kvasko at gmail.com> wrote:

> I am doing passthrough from Ubuntu 14.04 3.19 (Host) to an Ubuntu 14.04
> guest 3.19. I have been testing with a GeForce GTX 980 and GTX 1080. I have
> seen people do PCI Passthrough without a problem with GeForce cards.
>
> I can see device inside the guest VM:
>
>     lspci -vnn | grep VGA
>
>  00:05.0 VGA compatible controller: NVIDIA Corporation Device 1b80 (rev a1)
>
> OR if I have the GTX 980 passed through.
>
> 00:05.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX
> 980] (rev a1)
>
> I was able to successfully install the driver (370.2, latest driver). I
> have tried with several other driver versions with same results. It
> installs, but is not recognized by nvidia-smi (same result both cards):
>
>     nvidia-smi
>
> > Unable to determine the device handle for GPU 0000:00:05.0: Unknown
> > Error
>
>
> Looking in dmesg I see the following error message
>
> > [   29.535583] nvidia 0000:00:05.0: irq 45 for MSI/MSI-X [
> > 29.577727] NVRM: RmInitAdapter failed! (0x23:0x56:458) [   29.577807]
> NVRM: rm_init_adapter failed for device bearing minor number 0
>
> Another person on the NVidia forums had the SAME exact issue as me (but no
> answer).
>
> https://devtalk.nvidia.com/default/topic/957757/gtx-1080-
> amp-kvm-pci-passthrough-to-guest/?offset=2#5033118
>
> Is there anyway to debug this further? I'm currently trying to narrow this
> down to either drivers or passthrough causing it.
>
>
>
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