> Pedro:
>   To keep the same behavior, I suggest to only update
> BaseRngLibConstructor() API with TestRdRand, don't touch other APIs.

Liming,
the point is to fix the library's broken behavior, as previously discussed
in the ML, and documented in the commit message and the bugzilla.
Only updating BaseRngLibConstructor would do absolutely nothing.
ArchIsRngSupported needs updating because it's bogus.
The individual ArchGetRandomNumberN() do not *need* updating, but it's a
good idea to make sure that "Existing software depends on this always
returning TRUE" isn't actually reality.

Pedro