Comment 1 for bug 1934555

I don't know that any of the devs are paying attention to the riscv code.
Since you have by this bug report expressed interest in it, would be able to identify the first breaking change? riscv was definitely working as of:
commit dc3d0fe45c5c331ab4030465fda72d1f0d8cd8b9
Author: Douglas Katzman <email address hidden>
Date: Thu Dec 3 01:04:24 2020 -0500
    riscv: implement layout-id fixups

I did a 'git bisect start' to see how many revisions are entailed since then:
  Bisecting: 406 revisions left to test after this (roughly 9 steps)
So it's not too onerous for someone who cares to do it, but is for someone who doesn't.