From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 2/3] watchdog: control hard lockup detection default Date: Thu, 24 Jul 2014 12:46:11 +0200 Message-ID: <53D0E3F3.6050206@redhat.com> References: <1406196811-5384-1-git-send-email-drjones@redhat.com> <1406196811-5384-3-git-send-email-drjones@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: uobergfe@redhat.com, dzickus@redhat.com, akpm@linux-foundation.org, mingo@redhat.com To: Andrew Jones , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:59623 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750808AbaGXKqS (ORCPT ); Thu, 24 Jul 2014 06:46:18 -0400 In-Reply-To: <1406196811-5384-3-git-send-email-drjones@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 24/07/2014 12:13, Andrew Jones ha scritto: > > The running kernel still has the ability to enable/disable at any > time with /proc/sys/kernel/nmi_watchdog us usual. However even > when the default has been overridden /proc/sys/kernel/nmi_watchdog > will initially show '1'. To truly turn it on one must disable/enable > it, i.e. > echo 0 > /proc/sys/kernel/nmi_watchdog > echo 1 > /proc/sys/kernel/nmi_watchdog Why is it hard to make this show the right value? :) Paolo