Excerpts from David Miller's message of September 15, 2020 5:59 am: > From: Nicholas Piggin <npiggin@xxxxxxxxx> > Date: Mon, 14 Sep 2020 14:52:18 +1000 > > ... >> The basic fix for sparc64 is to remove its mm_cpumask clearing code. The >> optimisation could be effectively restored by sending IPIs to mm_cpumask >> members and having them remove themselves from mm_cpumask. This is more >> tricky so I leave it as an exercise for someone with a sparc64 SMP. >> powerpc has a (currently similarly broken) example. >> >> Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> > > Sad to see this optimization go away, but what can I do: > > Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> > Thanks Dave, any objection if we merge this via the powerpc tree to keep the commits together? Thanks, Nick
