Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752396AbbBWN7m (ORCPT ); Mon, 23 Feb 2015 08:59:42 -0500 Received: from mail.skyhub.de ([78.46.96.112]:48779 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751974AbbBWN7l (ORCPT ); Mon, 23 Feb 2015 08:59:41 -0500 Date: Mon, 23 Feb 2015 14:58:42 +0100 From: Borislav Petkov To: Naoya Horiguchi Cc: Naoya Horiguchi , Tony Luck , Vivek Goyal , "linux-kernel@vger.kernel.org" , Junichi Nomura , Kiyoshi Ueda Subject: Re: [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off MCE in all CPUs together Message-ID: <20150223135842.GA22753@pd.tnic> References: <1424682719-16493-1-git-send-email-n-horiguchi@ah.jp.nec.com> <20150223092739.GA22757@pd.tnic> <54EB24BE.5050006@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <54EB24BE.5050006@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1181 Lines: 31 On Mon, Feb 23, 2015 at 10:01:50PM +0900, Naoya Horiguchi wrote: > userspace. What end users see is like these timeout messages: > - "Timeout: Not all CPUs entered broadcast exception handler", > - "Timeout: Subject CPUs unable to finish machine check processing", > - "Timeout: Monarch CPU unable to finish machine check processing", or > - "Timeout: Monarch CPU did not finish machine check processing". > These are informative for developers like us, but confusing for end users. Those messages won't go out if tolerant level is > 1 AFAICT and from looking at mce_timed_out() and the machine wouldn't panic, for that matter. So what is the actual problem you're seeing? Cores timeoutting when a machine check happens during entering kdump or you not wanting cores to panic due to a machine check while the machine enters kdump? Something else? -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/