GPU Passthrough proxmox setup

gpu_passthrough.sh

#!/bin/bash

# https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough/

# intel based script

apt-get update
apt-get upgrade -y

echo "current value of GRUB_CMDLINE_LINUX_DEFAULT"
grep GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub
sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT=.*/GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on"/g' /etc/default/grub
echo "new value"
grep GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub
update-grub

modules=(vfio vfio_iommu_type1 vfio_pci vfio_virqfd)
for module in "${modules[@]}"; do
  if ! grep -q "^$module" /etc/modules; then
    echo "$module" | tee -a /etc/modules
  fi
done

lines=( "options vfio_iommu_type1 allow_unsafe_interrupts=1" )
for line in "${lines[@]}"; do
  if ! grep -q "^$line" /etc/modprobe.d/iommu_unsafe_interrupts.conf; then
    echo "$line" | tee -a /etc/modprobe.d/iommu_unsafe_interrupts.conf
  fi
done

lines=("options kvm ignore_msrs=1" )
for line in "${lines[@]}"; do
  if ! grep -q "^$line" /etc/modprobe.d/kvm.conf; then
    echo "$line" | tee -a /etc/modprobe.d/kvm.conf
  fi
done

drivers=(nouveau nvidia radeon)
for driver in "${drivers[@]}"; do
  if ! grep -q "^blacklist $driver" /etc/modprobe.d/blacklist.conf; then
    echo "blacklist $driver" | tee -a /etc/modprobe.d/blacklist.conf
  fi
done

gpu_address=$(lspci -nn | grep -i "vga\|3d\|2d" | grep -v "Audio" | head -n 1 | cut -d ' ' -f 1 | cut -d '.' -f 1)

ids=""

# getting vendors and devices id for vga and audio from address
for device in $(lspci -n -s $gpu_address | cut -d ' ' -f 3); do
  vendor=$(echo $device | cut -d ':' -f 1)
  device=$(echo $device | cut -d ':' -f 2)
  if [ -z "$ids" ]; then
    ids="$vendor:$device"
  else
    ids="$ids,$vendor:$device"
  fi
done

# exclude from vfio-pci
if ! grep -q "^options vfio-pci ids=$ids disable_vga=1" /etc/modprobe.d/vfio.conf; then
  echo "options vfio-pci ids=$ids disable_vga=1" | tee -a /etc/modprobe.d/vfio.conf
fi

update-initramfs -u
echo "Do you want to reboot now? (y/n)"
read answer
if [ "$answer" != "${answer#[Yy]}" ] ;then
  reboot
fi