@jp13232 @peek have you tried following this: https://docs.xcp-ng.org/compute/#pci-passthrough ?
Also, you can have a look there: https://xcp-ng.org/forum/topic/12523/igpu-pci-passthrough-new-experimental-packages-need-testers if you finally manage to do the passthrough but have "vbios issues" like explained in the thread.