1. Update /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet initcall_blacklist=sysfb_init intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction nofb nomodeset video=vesafb:off,efifb:off"

1. update-grub
2. Update /etc/modules

vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

1. IOMMU interrupt remapping

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

1. Blacklisting drivers by updating /etc/modprobe.d/blacklist.conf

blacklist radeon
blacklist nouveau
blacklist nvidia
blacklist nvidiafb

1. Add GPU to VFIO by editing: /etc/modprobe.d/vfio.conf (ID's taken from lspci -v output)

options vfio-pci ids=(10de:1b80,10de:10f0) disable_vga=1

1. Update initramfs

update-initramfs -u

Reboot Host

1. Configure VM and bootup, disable Secure Boot in VM Bios
2. Modify VM like this: