From: David Hildenbrand on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1023#note_5512...
I double checked ... we already have CONFIG_CMA=y in RHEL 8 for s390x
and ppc64. So we better not mess with these options. It's kind of weird
to only taint on one arch, but well it feels like the easiest thing to
do.