From: Patrick Talbert on gitlab.com https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2127#note_1174323...
@llong1 kernel-ark actually sets this config option the same way as your redhat/centos-stream/src/kernel/centos-stream-9!1557. The only difference is your centos MR does it under the common/ directory while in kernel-ark the option is set under the ark/ directory. But the generated setting for CONFIG_ZSMALLOC will be the same for the rhel flavour under both projects.
We've updated @prarit's script so it is better about detecting these cases and will no longer post a warning comment.
So really I think this MR can be closed because it is effectively a noop.