Unable to initiate intel gvt-g with ProxmoxVE 6.2

E

everwisher

Member
Jun 23, 2019
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I can't bring up intel gvt-g following the official documentation. No matter what I do, I can't see the /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types folder being created. What have I done wrong? Please help.

Hardware info:
Intel 8700t with Intel UHD graphics 630 iGPU

Here's my /etc/default/grub
Code: 
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="Proxmox Virtual Environment"
GRUB_CMDLINE_LINUX_DEFAULT="vfio-pci.ids=1002:67ff,1002:aae0,1106:3483,8086:a170 vfio_iommu_type1.allow_unsafe_interrupts=1 iommu=pt pcie_acs_override=downstream,multifunction i915.enable_gvt=1 kvm.ignore_msrs=1 irqpoll drm.debug=0 intel_iommu=on,igfx_off"
GRUB_CMDLINE_LINUX="quiet resume=UUID=6edb496b-2378-427a-a7b1-fb4d2f05a964"

# Disable os-prober, it might add menu entries for each guest
GRUB_DISABLE_OS_PROBER=true

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Disable generation of recovery mode menu entries
GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

Here's my /etc/modules
Code: 
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

kvmgt
vfio
vfio_mdev
vfio_pci
vfio_iommu_type1
vfio_virqfd

Here's all the conf files in /etc/modprobe.d/
Code: 
# This file contains a list of modules which are not supported by Proxmox VE 

# nidiafb see bugreport https://bugzilla.proxmox.com/show_bug.cgi?id=701
blacklist nvidiafb
blacklist amdgpu
blacklist snd_hda_intel
# enable this to passthrough devices by vendor:device id
options vfio-pci ids=1002:67ff,1002:aae0,1106:3483

# enable this to passthrough on-board audio
options vfio-pci ids=8086:a170

# enable this to passthrough on-board sata controller
# options vfio-pci ids=8086:a102

# enable unsafe interrupts
# options vfio_iommu_type1 allow_unsafe_interrupts=1

# enable nested virtualization
options kvm_intel nested=1

# MSRS check
options kvm ignore_msrs=Y

update-initramfs and update-grub were done on every change to grub or module settings.

Weirdly, when I typed modprobe kvmgt, this was the response:
modprobe: ERROR: could not insert 'kvmgt': No such device
Click to expand...
 
I have the same problem (no such device, etc). I wasn't able to get PCIe passthrough working either (Intel 630 driver error 43 in Win10 guest).

everwisher - did you ever figure out how to get it working?
 
can you post the output of 'dmesg' ?
 
You are missing the module "kvmgt" in your /etc/modules
Also remember to run "update-initramfs -u -k all"
after updating /etc/modules and reboot the server.
 
It's in /etc/modules and the initramfs is updated. I also set intel_iommu to igfx_off. The issue is that kvmgt will not load - it seems to fail at boot, and also fails when I try to load it manually:

Code: 
# modprobe -v kvmgt
insmod /lib/modules/5.4.78-2-pve/kernel/drivers/gpu/drm/i915/gvt/kvmgt.ko
modprobe: ERROR: could not insert 'kvmgt': No such device

Updated dmesg output attached.
 

Attachments

titoj19 said:
It's in /etc/modules and the initramfs is updated. I also set intel_iommu to igfx_off. The issue is that kvmgt will not load - it seems to fail at boot, and also fails when I try to load it manually:

Code: 
# modprobe -v kvmgt
insmod /lib/modules/5.4.78-2-pve/kernel/drivers/gpu/drm/i915/gvt/kvmgt.ko
modprobe: ERROR: could not insert 'kvmgt': No such device

Updated dmesg output attached.
Click to expand...
Sorry, missed that it was at the top. :)
 
maybe there is some bios switch you have to enable?
 
mhmm... i we do not have this exact hardware to test... maybe there is a bios update that could help?
 
titoj19 said:
Just an update in case anyone runs into the same issue. I removed my second Nvidia GPU and reinstalled pve on the host and now it's working fine.
Click to expand...
Hi, I have the same problem right now. Can you return the NVIDIA card after that? Or you can not use it because of it? I mean does he interfere with it?
 
Itay1778 said:
Hi, I have the same problem right now. Can you return the NVIDIA card after that? Or you can not use it because of it? I mean does he interfere with it?
Click to expand...
Yes - once I got the gvt-g running comfortably, I was able to reinstall the nvidia card and actually use PCI pass through to send it to the same vm.
 
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