[vfio-users] Host machine boot lockup with GPU - 2 NVidia GPUs

[Robert Munteanu]

Please disregard, I was attaching the wrong video card to vfio. After
correcting the ids=... option all works like a charm.

03:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce
GTX 750 Ti] (rev a2)
    Subsystem: ASUSTeK Computer Inc. Device 84dd
    Kernel driver in use: vfio-pci
    Kernel modules: nouveau, nvidia_drm, nvidia
03:00.1 Audio device: NVIDIA Corporation Device 0fbc (rev a1)
    Subsystem: ASUSTeK Computer Inc. Device 84dd
    Kernel driver in use: vfio-pci
    Kernel modules: snd_hda_intel


On Tue, Mar 21, 2017 at 12:09 PM, Robert Munteanu
<robert.munteanu at gmail.com> wrote:
> Hi,
>
> I'm trying to get GPU passthrough to work, but the host machine locks
> up hard at boot time.
>
> My hardware specs:
>
> - Intel i5 6500 CPU
> - MSI H170A PC Mate ATX LGA1151 Motherboard
> - MSI GeForce GTX 1070 Armor OC 8GB DDR5 256-bit Video Card
> - Asus GeForce GTX 750 Ti 2GB STRIX Video Card
>
> I'm running openSUSE Tumbleweed with Kernel 4.10.3 .
>
> I've done the following:
>
> 1. Added a new grub entry for vfio, boot line is
>
>     linuxefi /boot/vmlinuz
> root=UUID=280d6f04-6ad0-4647-96b9-580aec12bbdc  ${extra_cmdline}
> resume=/dev/sda3 splash=silent quiet showopts intel_iommu=on
>
> 2. Added the vfio modules to initrd
>
> /etc/modules-load.d/local.conf :
>
> drm_kms_helper
> vfio
> vfio_iommu_type1
> vfio_pci
> vfio_virqfd
>
> 3. Bound the 750Ti video card to vfio
>
> /etc/modprobe.d/99-local.conf :
>
> options vfio-pci ids=10de:1b81,10de:10f0
>
> When I boot with this configuration ( after regenerating the initrd
> and the grub2.cfg file ) the boot process hangs early. I took some
> pictures of the screen, see the below link.
>
>   http://imgur.com/a/egoMB
>
> I added iommu=pt to the boot line, but that did not help ( note that
> in the gallery above the first picture is iommu=pt and the second one
> is without ).
>
> I am using the nvidia proprietary driver and would like to keep doing so.
>
> Removing the options vfio-pci ids=... line allows the boot process to
> proceeed normally.
>
> Any advice on how to unblock this would be very welcomed.
>
> Thanks,
>
> Robert
>
> --
> http://robert.muntea.nu/



-- 
http://robert.muntea.nu/