Re: [PATCH] perf/x86/intel/uncore: fix IMC missing box initialization

[Ingo Molnar]

* Vince Weaver <vincent.weaver@xxxxxxxxx> wrote:

> On Mon, 11 May 2015, Ingo Molnar wrote:
> 
> > 
> > * Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> > 
> > > On Mon, Apr 27, 2015 at 03:43:32AM +0000, Liang, Kan wrote:
> > > > 
> > > > >
> > > > > > This leads me to believe that this patch:
> > > > > >
> > > > > > commit c05199e5a57a579fea1e8fa65e2b511ceb524ffc
> > > > > > Author: Kan Liang <kan.liang@xxxxxxxxx>
> > > > > > Date:   Tue Jan 20 04:54:25 2015 +0000
> > > > > >
> > > > > >     perf/x86/intel/uncore: Move uncore_box_init() out of driver
> > > > > initialization
> > > > > >
> > > > > > If I revert it, I bet things will work again.
> > > > >
> > > > > Yes the initialization needs to be moved out of the IPI context.
> > > 
> > > I'm for the clean revert I think. Crashing is bad, but hiding/delaying
> > > it seems counter productive too, it'll just mean we'll only learn about
> > > it later.
> > 
> > So should I revert c05199e5a57a, with a Cc: stable?
> 
> any progress on this issue?  With 4.1-rc7 I can still quickly crash a 
> Haswell machine due to this bug.

This dropped through the cracks. Peter?

Thanks,

	Ingo
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