ppc64le support was contributed by IBM
https://mirror.stream.centos.org/SIGs/9-stream/virt/ppc64le/kvm-common/
but the latest qemu-kvm there is 7.0 from 2022.
ARM packages for ovirt are still being built in COPR and in CentOS Virtualization SIG, not
sure if someone ever gave them a try
--
Sandro Bonazzola