PCIe Passthrough

Make sure to Use either Legacy or EFI

Legacy Systems

Edit the Grub file

Edit Grub

nano /etc/default/grub

Intel

Add the following line to the Grub File

Add to Grub - Intel

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on"

AMD

Add the following line to the Grub File

Add to Grub - AMD

GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on"

Update Grub

update-grub

EFI Boot Systems

Edit the cmdline File

Edit cmdline File

nano /etc/kernel/cmdline

Intel IOMMU

Add the following to the cmdline file.

For Intel

intel_iommu=on

AMD IOMMU

Add the following to the cmdline file.

For AMD

amd_iommu=on

Refresh Boot Tools

Refresh Boot tools

proxmox-boot-tool refresh

Load VFIO at Boot

Edit Modules

nano /etc/modules

Add the Following to the /etc/modules file.

Add to file

vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

Blacklist Drivers on Proxmox

Blacklist Drivers

echo "options vfio_iommu_type1 allow_unsafe_interrupts=1" > /etc/modprobe.d/iommu_unsafe_interrupts.conf
echo "options kvm ignore_msrs=1" > /etc/modprobe.d/kvm.conf
echo "blacklist nouveau" >> /etc/modprobe.d/blacklist.conf
echo "blacklist nvidia" >> /etc/modprobe.d/blacklist.conf

Configure GPU for PCIe Passthrough

!!! note Use lspci to find the correct prefix for your GPU.

Configure GPU for Passthrough

lspci -n -s 01:00

Add to vfio.conf

Make sure to update Values

Replace XXXX:XXXX,XXXX:XXXX with the variables for the nvidia GPU.

Add to vfio.conf

echo "options vfio-pci ids=XXXX:XXXX,XXXX:XXXX disable_vga=1"> /etc/modprobe.d/vfio.con

Apply All Changes

Apply Changes

update-initramfs -u -k all

Reboot

reboot -f