Install libvirt, virt-manager, latest stock kernel, ovmf-bin. ovmf-bin may need to come from the AUR. Check if your graphics card is UEFI compilant. If not, search for a rom/gpu bios file that does support UEFI and store it somewhere.
** You may need to run your host on UEFI as well if using the i915 as primary graphics. **
If you get permission issues, try running the qemu instances as root. Edit /etc/libvirt/qemu.conf for this.