Does Proxmox VE 5.0 Beta1 support kvmgt?

[elurex]

does pve ve 5.0 beta 1 support kvmgt desribed in https://github.com/01org/gvt-linux/wiki/GVTg_Setup_Guide?

 

[fabian]

that seems to require a patched linux kernel (but maybe all of it got merged in the meanwhile?) and qemu >= 2.8.. PVE 5.0 Beta is still on qemu 2.7, but that will likely change before the final release.

 

[elurex]

according to https://kernelnewbies.org/Linux_4.10#head-6b7d1bd2f7247da9c87798a91e10302b0cc32331 kernel 4.10 12.1 it merges with intel GVT-g device code already

 

[fabian]

then it will probably be testable once 5.0 gets the next major qemu upgrade.

 

[drdownload]

So since proxmox is on 2.9: has anybody already tried to use kvmgt?

 

[elurex]

seems to me that kvmgt needs to custom compile kernel
....

 

[drdownload]

for me the information is also not conclusive

https://github.com/01org/gvt-linux/wiki/GVTg_Setup_Guide#21-operating-system-requirements

Ubuntu 16.04.1 has been fully validated as host, other Linux operating system like RHEL / Fedora are also OK.​

16.04.1 uses 4.4

GVT-g kernel: https://github.com/01org/gvt-linux/ (branch: gvt-stable-4.12)
QEMU: https://github.com/01org/igvtg-qemu (branch: stable-2.9.0)
Xen : https://github.com/01org/igvtg-xen (branch: xengt-stable-4.9)

NOTICE: For KVMGT, you also can use the current upstream Linux kernel and QEMU directly since all the enabling patches have been upstreamed.
​

It doenst mention what "current" means however since the kernel is in the 4.12 branch I assume its 4.12.

 

[drdownload]

Since proxmox 5.1 will use 4.13 kernel maybe it will just work,

 

[drdownload]

Maybe I have time on the next weekend to spin up the 5.1 beta for a test.

 

[elurex]

https://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_5.3

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.

any guides on how to make kvmgt GVT-g works? the only info I am able to find is at https://youtu.be/0YyMTg9qc74?t=300

my mDev Did not show


I have Xeon CPU E3-1585 v5 @ 3.50GHz with Iris Pro 580 GPU and it supports gvt-g

 

[elurex]

answering my own question

/etc/default/grub
add iommu_intel = on, i915.enable_gvt=1 to GRUB_CMDLINE_LINUX_DEFAULT

add kvm.ignore_msrs=1 in grub or /etc/modprobe.d/kvm.conf
echo "options kvm ignore_msrs=1" > /etc/modprobe.d/kvm.conf
if you want to run gpu benchmark test



you will see kvmgt/gvtg MDev

 

[elurex]

performance

 

[dcsapak]

great you got it working
it is also documented in the reference documentation: https://pve.proxmox.com/pve-docs/chapter-qm.html#qm_pci_passthrough
(it seems it did not get included in the wiki, i will see to it that this chapter will also be a wiki page)

 

[WenleZ]

answering my own question

/etc/default/grub
add iommu_intel = on, i915.enable_gvt=1 to GRUB_CMDLINE_LINUX_DEFAULT

add kvm.ignore_msrs=1 in grub or /etc/modprobe.d/kvm.conf
echo "options kvm ignore_msrs=1" > /etc/modprobe.d/kvm.conf
if you want to run gpu benchmark test

View attachment 8892

you will see kvmgt/gvtg MDev

When I try to start a VM with this assigned, I get
TASK ERROR: pci device '00:02.0' has no available instances of 'i915-GVTg_V5_8'

I have a E3-1585v5 as well.

 

[elurex]

did you select mdev?

 

[WenleZ]

I'm able to select the mdev, but can't start the VM with it. I was able to get it to work after flowing a guide on Reddit, titled: Running Windows via QEMU/KVM and Intel GVT-g on Arch Linux