Mediated GPU

spetrillo

Member
Feb 15, 2024
196
9
18
Hello all,

Been following a number of documents on how to setup mediated devices for my UHD 630 onboard graphics processor and when I listed the the mdev supported types I got back the following: i915-GVTg_V5_4 i915-GVTg_V5_8

I cannot find anything that tells what this means. Anyone know?

Thanks,
Steve
 
Hello,

i915 is the Intel graphics driver
GVTg is the Intel's mediated device technology
V5_4 and V5_8 are the versions

This means that you can select one of these versions as mdev when assigning the PCI device to the VM.
 
Markus,

Does this mean I can assign these to 2 vms in total? What is the difference between v5_4 and v5_8?

Thanks,
Steve
 
Does this mean I can assign these to 2 vms in total? What is the difference between v5_4 and v5_8?
No, they are just versions. To see the difference just print out the description from sysfs:

Code:
cat /sys/bus/pci/devices/[your pcie card]/mdev_supported_types/i915-GVTg_V5_4/description
cat /sys/bus/pci/devices/[your pcie card]/mdev_supported_types/i915-GVTg_V5_8/description

https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide#51-check-mdev-module-kvmgt-only
 
Ahhh got it...and are they controlled by what I set in my BIOS for the iGPU? Second do I need IOMMU to use mediated devices, or are they completely separate. I would like to run a Plex VM and give it the iGPU to use.
 
Ahhh got it...and are they controlled by what I set in my BIOS for the iGPU?
I do not know. Never had such a configuration in the BIOS. What can you configure for the iGPU?

Second do I need IOMMU to use mediated devices, or are they completely separate. I would like to run a Plex VM and give it the iGPU to use.
Yes, you need IOMMU.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!