From: Rafael Aquini on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1023#note_5561...
I don't have a strong opinion on this one, but I think should perhaps go
with (albeit weird) the conditional tainting for x86_64 and Aarch64.
Reason CMA was disabled in RHEL8 basically boils down to:
a) it was disabled in kernel-alt, due to reported problems with Aarch64;
b) the (RHEL-7) early dependency on CMA to grab 1GB pages at runtime was
dismissed by the original reporter of that need.