On Sun, 2021-03-21 at 08:46 +0100, Mike Galbraith wrote: > On Sat, 2021-03-20 at 09:18 +0100, Mike Galbraith wrote: > > On Fri, 2021-03-19 at 23:33 +0100, Sebastian Andrzej Siewior wrote: > > > Dear RT folks! > > > > > > I'm pleased to announce the v5.12-rc3-rt3 patch set. > > > > My little rpi4b is fairly unhappy with 5.12-rt, whereas 5.11-rt works > > fine on it. The below spew is endless, making boot endless. I turned > > it into a WARN_ON_ONCE to see if the thing would finish boot, and > > surprisingly, it seems perfectly fine with that bad idea. Having not > > the foggiest clue what I'm doing down in arm arch-land, bug is in no > > immediate danger :) > > Actually, it looks like a defenseless little buglet, and this gripe > simply wants to be disabled for RT. Or completely removed instead. It's entirely possible I'm missing something obvious to arm experts, but I don't _think_ the register read needs protection, leaving me wondering why arch_faults_on_old_pte() was born with that warning. -Mike
