From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [patch-3.18.7-rt1] sched/context-tracking: fix PREEMPT_LAZY explosions Date: Mon, 9 Mar 2015 14:45:35 +0100 Message-ID: <20150309134535.GA13768@linutronix.de> References: <20150216111822.GA21649@linutronix.de> <1424258514.3819.39.camel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Cc: linux-rt-users , LKML , Thomas Gleixner , rostedt@goodmis.org, John Kacur To: Mike Galbraith Return-path: Received: from www.linutronix.de ([62.245.132.108]:35476 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753980AbbCINph (ORCPT ); Mon, 9 Mar 2015 09:45:37 -0400 Content-Disposition: inline In-Reply-To: <1424258514.3819.39.camel@gmail.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: * 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. Sebastian