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title: Virtual Function I/O Mediated devices (vfio-mdev)
description: Create and Configure Virtual Function I/O Mediated devices (vfio-mdev)
published: true
date: 2022-07-21T21:23:57.267Z
date: 2022-07-23T10:33:04.565Z
tags:
editor: markdown
dateCreated: 2022-07-21T21:10:41.046Z
@ -10,31 +10,37 @@ dateCreated: 2022-07-21T21:10:41.046Z
# Configure Virtual Function I/O Mediated devices (vfio-mdev)
Virtual Function I/O Mediated devices (vfio-mdev) allows you to split your GPU into virtual GPUs (vGPus), which are multiple virtual instances that can be managed using the native driver of your GPU.
Virtual Function I/O Mediated devices (vfio-mdev) allows you to split your a compatible GPU into multiple virtual GPUs (vGPUs). These vGPUs can then be assigned to a virtual machine.
These instructions only cover Intel GPUs that are compatible with Virtual Function I/O (VFIO) Mediated devices (gen 5th to gen 9th, perhaps 10th).
For Xe Intel graphics (11th and onward) and other cards, use SR-IOV-based GPUs.
> These instructions only cover Intel GPUs that are compatible with vfio-mdev (5th to 9th-10th generation). Intel Xe Graphics (12th generation and onward) do not support vfio-mdev but SR-IOV.
{.is-info}
## Preparation
* Make sure to update the grub first
### Update the GRUB
* On a freshly deployed edition of Phyllome OS optimized for Intel Graphics such as [Phyllome OS Desktop II](https://wiki.phyllo.me/deploy/rightforyou), make sure that the GRUB has been updated.
```
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
```
* Reboot
* Then reboot your computer
```
Reboot
sudo reboot
```
* Modify available GPU Aperture size (GPU memory) in the BIOS/UEFI.
### Modify GPU Memory in BIOS/UEFI
```
To-do
```
> Only available for Intel Graphics cards
{.is-info}
Some computers allow you to modify the GPU memory allocated your desktop-based computers. It will reserve system memory for the GPUs.
To do so, you need to enter the BIOS/UEFI and to look for a setting called GPU Aperture size, or GPU memory.
Use the highest value possible, but make sure you have enough system memory to accomodate both the GPU and your operating system.
## Create a virtual GPU