From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Subject: Re: [patch-3.18.7-rt1] sched/context-tracking: fix PREEMPT_LAZY
 explosions
Date: Mon, 09 Mar 2015 15:36:11 +0100
Message-ID: <1425911771.30469.8.camel@gmail.com>
References: <20150216111822.GA21649@linutronix.de>
	 <1424258514.3819.39.camel@gmail.com> <20150309134535.GA13768@linutronix.de>
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Cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>, rostedt@goodmis.org,
	John Kacur <jkacur@redhat.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20150309134535.GA13768@linutronix.de>
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On Mon, 2015-03-09 at 14:45 +0100, Sebastian Andrzej Siewior wrote:
> * Mike Galbraith | 2015-02-18 12:21:54 [+0100]:
> 
> >On Mon, 2015-02-16 at 12:18 +0100, Sebastian Andrzej Siewior wrote:
> >
> >> Known issues:
> >>
> >>       - lazy preempt on x86_64 leads to a crash with some load.
> >
> >The below still works for me.  (it doesn't make nohz_full actually work
> >in rt, but at least folks who want to tinker with it can do so)
> So your box still crashes without it?
> 
> The thing is I tried to reproduce it and it does not occur anymore.
> Neither in KVM nor on real HW.

Heh, well that's interesting, I just presumed it would still explode
because you said it would.  I'll beat on it any let you know if I'm
carrying a placebo patch or not :)

	-Mike