Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1163263AbYCTA35 (ORCPT ); Wed, 19 Mar 2008 20:29:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759926AbYCSXw3 (ORCPT ); Wed, 19 Mar 2008 19:52:29 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:37533 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S943224AbYCSXw2 (ORCPT ); Wed, 19 Mar 2008 19:52:28 -0400 Date: Thu, 20 Mar 2008 00:52:12 +0100 From: Ingo Molnar To: Jeremy Fitzhardinge Cc: LKML , Ian Campbell Subject: Re: [PATCH 00 of 31] x86: unification and xen updates Message-ID: <20080319235212.GA22786@elte.hu> References: <20080319190536.GA11432@elte.hu> <20080319194648.GA20088@elte.hu> <47E17171.9090108@goop.org> <20080319200931.GA24828@elte.hu> <20080319213343.GA2195@elte.hu> <47E18B8E.8080104@goop.org> <20080319220028.GA10480@elte.hu> <47E18C9D.4010007@goop.org> <20080319220431.GA11606@elte.hu> <47E19085.2020308@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47E19085.2020308@goop.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0017] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 843 Lines: 23 * Jeremy Fitzhardinge wrote: >> simple bootup triggered it. > > Haven't managed to repro it yet, but DEBUG_PAGE_ALLOC turned up > another case of doing tlb flushes with preempt on: turns out that i have another bug which causes a screaming IRQ#0 that floods the box at 70K irqs/sec. That is what triggered that crash in your patch most likely. so either figure out the bug by review or try turning your IRQ#0 into a screaming one for debug purposes. (hint: turning irq#0's trigger mode from 'edge' to 'level' in mpparse.c or ioapic.c does wonders to that end ;-) Ingo -- 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/