tree be6493112775643f8aa24df9bef7429e7baedaf3
parent 7f74d27b2bdf12aaab5f9b6ad3b8eda2f2e9fe8c
author Barret Rhoden <brho@cs.berkeley.edu> 1582923511 -0500
committer Barret Rhoden <brho@cs.berkeley.edu> 1583266410 -0500

Add an escape hatch for "NMI-safer" printing

When debugging, I often want print a backtrace in NMI context.  That's
not particularly safe, and for the watchdog, hanging the machine is a
bad idea.

These dirty bools will let us skip the two locks *that I know about*
from the printing code paths.  Super brittle.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>