Gen12GPUPassthrough

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Ubuntu 22.04.2 desktop cdrom installation on Gen12 machine.

sudo apt update -y && sudo apt upgrade -y
sudo apt install -y openssh-server virt-manager qemu vim

Edit the grub and initramfs-tools, and vfio:

$ cat /etc/default/grub | grep CMDLINE_LINUX_DEFAULT
GRUB_CMDLINE_LINUX_DEFAULT="quiet  intel_iommu=on intel_iommu=pt kvm.ignore_msrs=1 video=efifb:off,vesafb:off"
$ cat /etc/initramfs-tools/modules
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd
$  echo "options vfio-pci disable_vga=1" > /etc/modprobe.d/vfio.conf
$ sudo update-grub2 && sudo update-initramfs -u -k all
$ sudo reboot

Build ovmf:

$ cp /home/idv/xxxxxxxxx/VBT/Vbt.bin OvmfPkg/Vbt/Vbt.bin 
$ cp /home/idv/xxxxxxxxx/./IntelGopDriver/RELEASE_VS2015x86/X64/IntelGopDriver.efi OvmfPkg/IntelGop/IntelGopDriver.efi
$ pwd
/home/idv/Code/Intel_edk2/edk2_gen12
Build the ovmf(follow the guideline)

Install an ubuntu22.04 vm in host machine, with qxl/spice.

glmark2: score 1711

Install win11(shift+f10), use regedit for editing:

Fallback and continue install: