Created bug on edk2 upstream bugzilla: Bug 4373 - Got Page-Fault in CpuIo2Dxe.dll when using edk2-stable202211 ovmf with qemi-kvm https://bugzilla.tianocore.org/show_bug.cgi?id=4373 I also sent mail to devel@edk2.groups.io for checking with Gerd Hoffmann.