From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751444AbeA2IUv (ORCPT <rfc822;w@1wt.eu>);
        Mon, 29 Jan 2018 03:20:51 -0500
Received: from Galois.linutronix.de ([146.0.238.70]:40899 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751256AbeA2IUu (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 29 Jan 2018 03:20:50 -0500
Date: Mon, 29 Jan 2018 09:20:48 +0100
From: Sebastian Sewior <bigeasy@linutronix.de>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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
Message-ID: <20180129082047.hash3pnhpztzcg22@linutronix.de>
References: <alpine.DEB.2.20.1801261447590.2067@nanos>
 <20180126220917.GI3741@linux.vnet.ibm.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <20180126220917.GI3741@linux.vnet.ibm.com>
User-Agent: NeoMutt/20171215
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

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.

Sebastian