New and simplified GPU passthrough guide is available here: • Easiest GPU passthrough guide for Fedora 33
If you get error 43, keep the hypervisor tags in virsh and specify some vendor id.
This guide explains the steps:
• Ubuntu 18.04 and KVM: UPDATED Easy GPU pas...
Arch Linux GPU passthrough wiki:
https://wiki.archlinux.org/index.php/...
Download the script from:
https://github.com/pavolelsig?tab=rep...
Grub:
intel_iommu=on or amd_iommu=on
rd.driver.pre=vfio-pci
kvm.ignore_msrs=1