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Date: Mon, 29 Jan 2018 01:57:38 -0800
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Sebastian Sewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>,
        Anna-Maria Gleixner <anna-maria@linutronix.de>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH] hrtimer: Reset hrtimer cpu base proper on CPU hotplug
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On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> > find this one.  ;-)  But it did pass rcutorture testing for a great many
> > years, didn't it?  :-/
> 
> It started to trigger better (or at all) on our test box with
> 	modprobe kvm_intel preemption_timer=n
> 
> on the host kernel so maybe a completely unrelated change helped to
> trigger this.

Good point!

And testing continues, currently at 108 hours of TREE01 without any
waylayed timers, so looking good!  ;-)

Just kicked off another 70 hours worth.

							Thanx, Paul