Intel GVT-g Passthrough

[BradCart]

Hi

I'm running Proxmox 5.3 and was pretty excited to hear about

• vGPU/MDev and PCI passthrough. GUI for configuring PCI passthrough and also enables the use of vGPUs (aka mediated devices) like Intel KVMGT (aka GVT-g) or Nvidias vGPUS.

I'm running a Xeon E3-1245 v6 Kaby Lake CPU and have been able to configure a mediated device to passthrough to a VM. However when I connect up the server to a monitor I only receive output from the host and not the VM. Is there a way to switch the display between the host and vm? According to Intel's guides on KVMGT the VM id can be echoed to /sys/kernel/vgt/control/foreground_vm however I cannot find this directory.

I did notice an error with dmesg | grep i915

[   11.411374] i915 0000:00:02.0: Direct firmware load for i915/gvt/vid_0x8086_did_0x591d_rid_0x04.golden_hw_state failed with error -2

Is this expected or is there something incorrect with my configuration?

/etc/modules is below

vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd
vfio-mdev
kvmgt
intel_agp
i915

and I have my the following set in /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on pcie_acs_override=downstream i915.enable_gvt=1"

Thanks for your assistance!

 

[dcsapak]

no, kvm-gt is only for accelerating vms, there is no display output and you have to use a remote desktop software to use that
if you need output on a physical monitor, you have to pass through a whole graphics card

the foreground thing is probably outdated, because it is not featured in any of the current guides (https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide)

 

[Jovan Yeo]

how do I enable Mediated Device?

currently, shown , /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/': No such file or directory

is there a command to able Mediated Device function?