Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268992AbUI2U2L (ORCPT ); Wed, 29 Sep 2004 16:28:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269007AbUI2U2K (ORCPT ); Wed, 29 Sep 2004 16:28:10 -0400 Received: from bender.bawue.de ([193.7.176.20]:28909 "EHLO bender.bawue.de") by vger.kernel.org with ESMTP id S268992AbUI2U15 (ORCPT ); Wed, 29 Sep 2004 16:27:57 -0400 Date: Wed, 29 Sep 2004 22:27:50 +0200 From: Joerg Sommrey To: "Maciej W. Rozycki" Cc: Linux kernel mailing list Subject: Re: nmi watchdog failure on dual Athlon box Message-ID: <20040929202750.GA5534@sommrey.de> Mail-Followup-To: Joerg Sommrey , "Maciej W. Rozycki" , Linux kernel mailing list References: <20040928163324.GA5759@sommrey.de> <20040928183103.GA10593@sommrey.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6+20040722i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1441 Lines: 36 On Tue, Sep 28, 2004 at 10:08:21PM +0100, Maciej W. Rozycki wrote: > On Tue, 28 Sep 2004, Joerg Sommrey wrote: > > > |--- lockupcli.c > > | > > |main () > > |{ > > | iopl(3); > > | for (;;) asm("cli"); > > |} > > > > Does this mean there is a good reason for further investigations on why > > the IO-APIC NMI watchdog doesn't work? Until now I thought it would > > be ok as long as the local APIC NMI watchdog is set up. > > Since this program does busy looping, the local APIC NMI watchdog should > trigger indeed. It's "cli; hlt" that causes a problem with this watchdog. > Something wrong is happening in your system, indeed. As I stated earlier, there *seemed* to be a working IO-APIC NMI watchdog with 2.6.3-mm4. I never checked it's functionallity. Now I rebuilt that kernel and gave it a try. Though it claims to have a running IO-APIC NMI watchdog, the lockupcli test failed. Zwane was right when he suspected the nmi_watchdog=1 test working erratically in that case. Sad but true: no NMI watchdog on tyan S2466. I wonder if it's just impossible on such a board or if it needs some "special treatment" -jo -- -rw-r--r-- 1 jo users 63 2004-09-29 22:10 /home/jo/.signature - 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/