Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753211Ab1FZKrA (ORCPT ); Sun, 26 Jun 2011 06:47:00 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:46036 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753167Ab1FZKpc (ORCPT ); Sun, 26 Jun 2011 06:45:32 -0400 Date: Sun, 26 Jun 2011 12:45:21 +0200 From: Ingo Molnar To: Mike Galbraith Cc: LKML , Thomas Gleixner , Peter Zijlstra Subject: Re: [rfc patch] x86,apic: fix DEBUG_PREEMPT gripe when booting with threadirqs=1 Message-ID: <20110626104521.GE11093@elte.hu> References: <1308743825.8568.3.camel@marge.simson.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1308743825.8568.3.camel@marge.simson.net> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 814 Lines: 22 * Mike Galbraith wrote: > x86,apic: fix DEBUG_PREEMPT gripe when booting with threadirqs=1 > > If CONFIG_PREEMPT and CONFIG_INTR_REMAP are both set, and a box is > booted with threadirqs, the gripe below is emitted. It was suggested > that native_smp_prepare_cpus() shouldn't need to be run with preemption > disabled, and indeed, box boots with no hint of trouble. Remove it. Would also require a careful review of the code we take out of preempt protection now - have you done that by any chance? (if not, mind doing it?) Thanks, 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/