Qemu GPU Guide

Guide

https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Prerequisites

# DL
https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso

# Enable IOMMU

vim /etc/default/grub

intel_iommu=on

grub-mkconfig -o /boot/grub/grub.cfg

reboot


# Check IOMMU
dmesg | grep -i -e DMAR -e IOMMU

# Check Groups
#!/bin/bash
shopt -s nullglob
for g in /sys/kernel/iommu_groups/*; do
    echo "IOMMU Group ${g##*/}:"
    for d in $g/devices/*; do
        echo -e "\t$(lspci -nns ${d##*/})"
    done;
done;

#10de:1b06,10de:10ef

# vfio-pci
vim /etc/modprobe.d/vfio.conf
options vfio-pci ids=10de:1b06,10de:10ef

vim /etc/mkinitcpio.conf

MODULES=(... vfio_pci vfio vfio_iommu_type1 vfio_virqfd ...)
HOOKS=(... modconf ...)
mkinitcpio -p linux419
reboot

# Check
dmesg | grep -i vfio
lspci -nnk


# Install
pacman -Syu qemu libvirt ovmf virt-manager ebtables dnsmasq

vim /etc/libvirt/qemu.conf
nvram = [
	"/usr/share/ovmf/x64/OVMF_CODE.fd:/usr/share/ovmf/x64/OVMF_VARS.fd"
]

systemctl enable --now libvirtd.service
systemctl enable --now virtlogd.socket


virshpatcher --error43 --host-passthrough --vendor-id ab1234567890 <vm name>
 add <ioapic driver='kvm'/> to the <features> node with virsh edit <vm name>