[vfio-users] Quadro M1200 Mobile for CUDA

[Simon Brand]

That is good to know, thank you for the information.
I am not sure I understand your advice correctly, but since
it was not possible to assign the pci-bridge to vfio, I already tried
it without that. (see the qemu command)


On Wed, 17 Oct 2018 12:42:24 -0400
"Taiidan at gmx.com" <Taiidan at gmx.com> wrote:

> On 10/15/2018 12:00 PM, Simon Brand wrote:
> > Good evening,
> > 
> > I have a Lenovo Thinkpad P51 and I want to pass the GPU (GM107GLM
> > [Quadro M1200 Mobile]) to (linux) VM. I only want to run cuda on the
> > GPU, so there is no output needed.
> > I use an uptodate arch linux:
> >  $ uname -r
> > 4.18.14-arch1-1-ARCH
> >  $ qemu-system-x86_64 --version
> > 
> > The guest can see the nvidia card and the nvidia module is loaded,
> > but when I try to run nvidia-smi, it does not find my card.
> > 
> > I read that I need to pass every device in my IOMMU group to the vm.
> > I have the following groups:
> > 
> > IOMMU Group 1 00:01.0 PCI bridge [0604]: Intel Corporation Xeon
> > E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)
> > [8086:1901] (rev 05)
> > IOMMU Group 1 01:00.0 3D controller [0302]: NVIDIA Corporation
> > GM107GLM [Quadro M1200 Mobile] [10de:13b6] (rev a2)
> > IOMMU Group 2 00:02.0 VGA compatible controller [0300]: Intel
> > Corporation Device [8086:591b] (rev 04)
> > 
> > I start the host kernel with these parameters:
> > BOOT_IMAGE=/boot/vmlinuz-linux
> > root=UUID=9ad057db-0173-4df2-b73c-ca8b2f30b850 rw
> > cryptdevice=/dev/nvme0n1p1:root root=/dev/mapper/root
> > cryptkey=rootfs:/crypt.key intel_iommu=on i915.enable_gvt=1 iommu=pt
> > quiet vfio_pci.ids=10de:13b6,8086:1901 efifb=off
> > 
> > But the pci-bridge still gets assigned to pcieport driver. (I dont
> > know, if this is a problem, beause I dont pass it to the vm?).  
> 
> You don't pass pci bridges or switches or attempt to assign them to
> vfio no matter if they appear in the same group as a device like they
> do on intel systems, it is probably nothing (since you say it doesn't
> get assigned to vfio-pci anyway) but try again without that.
> 
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