SimonTod/proxmox-gpu-passthrough.md

## proxmox-gpu-passthrough.md

      
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              proxmox-gpu-passthrough.md
            
          
    Proxmox GPU Passthrough

Config :


Motherboard : ASUS PRIME B450M-A
CPU : AMD Ryzen 7 2700x
GPU : EVGA AMD RADEON R9 380 Series
Ram : DDR4 2133 MHz

Setting it all up

Update packages
apt update
apt ugrade
Change boot parameters
Inside of /etc/default/grub change the following line to include:
GRUB_CMDLINE_LINUX_DEFAULT="quiet iommu=pt amd_iommu=on video=efifb:off"
update grub then reboot
update-grub
reboot
check IOMMU is enabled
dmesg | grep -e DMAR -e IOMMU
blacklist drivers from loading
echo "blacklist nouveau" >> /etc/modprobe.d/blacklist.conf
echo "blacklist nvidia" >> /etc/modprobe.d/blacklist.conf
echo "blacklist radeon" >> /etc/modprobe.d/blacklist.conf 
enable modules
echo vfio >> /etc/modules
echo vfio_iommu_type1 >> /etc/modules
echo vfio_pci >> /etc/modules
echo vfio_virqfd >> /etc/modules
enable configuration
update-initramfs -u
find GPU PCI's IDs
lspci -v
find vendor's ID
lspci -n -s 08:00
configure module
echo "options vfio-pci ids=1002:6939,1002:aad8 disable_vga=1" > /etc/modprobe.d/vfio.conf
reboot
reboot
Create a new virtual machine inside of Proxmox. During the wizard make sure to select these things:

Create the VM using “SCSI” as the Hard Disk controller
Under CPU select type “Host”
Under Netwerk select Model “VirtIO”

After the wizard completes, we need to change a few things:

Next to linking the default DVD-ROM drive to a Windows 10 ISO (if you are passing through to windows), create a second DVD-ROM drive and link the VFIO driver ISO , you will need it while installing windows. Make sure the second DVD-ROM drive is assigned IDE 0
Under Options, change the BIOS to “OVMF (UEFI)”
Then under Hardware click Add and select “EFI Disk”

echo machine: q35 >> /etc/pve/qemu-server/110.conf
Now return to the web GUI and install Windows as normal. Because of the Hard Disk controller selected it won’t find a drive to install to during the install wizard but just select the ISO we linked to the second DVD-ROM drive and select the “vioscsi” directory.
Make sure you can remote control
GPU passthrough
echo "hostpci0: 08:00,x-vga=on,pcie=1" >> /etc/pve/qemu-server/110.conf
Sources


https://pve.proxmox.com/wiki/Pci_passthrough
https://blog.quindorian.org/2018/03/building-a-2u-amd-ryzen-server-proxmox-gpu-passthrough.html/