In this video Harvey shows you how to passthrough a GPU to a Windows 10 or 11 virtual machine, with tests, benchmarks, gaming and much more.
Commands used in this video:
Step 1 :
Preparing your grub boot loader and enabling IOMMU
Open up the grub configuration file using the command below:
Then, enter the corresponding arguments according to your system:
For Intel CPUs:
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt video=vesafb:off video=efifb:off"
For AMD CPUs:
GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on iommu=pt video=vesafb:off video=efifb:off"
Then update grub using the following command:
Now reboot using the following command:
Once the Proxmox Node has rebooted run the following command to see if IOMMU is enabled:
dmesg | grep -e DMAR -e IOMMU
If everything is working you should see a message that tells you that IOMMU is enabled. Now we are ready to move on to the next part
Now we are going to add the required modules to a configuration file so that PCI-E passthrough will work using the following commands:
First use the command below to edit the modules file:
Then place the following into the file:
vfio vfio_iommu_type1 vfio_pci vfio_virqfd
Once this has done save the file using ctrl x then y and press enter to save.
We are next going to see if our system supports IOMMU Remapping using the following command:
dmesg | grep 'remapping'
If you see one of the lines below then your system supports it:
- “AMD-Vi: Interrupt remapping enabled”
- “DMAR-IR: Enabled IRQ remapping in x2apic mode
If you do not see any of the following messages no worries! Fix it by putting the following command into the command line:
echo "options vfio_iommu_type1 allow_unsafe_interrupts=1" > /etc/modprobe.d/iommu_unsafe_interrupts.conf
Thats it! Now passthrough the GPU to see if it works. If your unsure how to do this watch the video on how I do it at the top of this post.