Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759364AbYHZSCm (ORCPT ); Tue, 26 Aug 2008 14:02:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758323AbYHZSCf (ORCPT ); Tue, 26 Aug 2008 14:02:35 -0400 Received: from perninha.conectiva.com.br ([200.140.247.100]:35655 "EHLO perninha.conectiva.com.br" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754124AbYHZSCe (ORCPT ); Tue, 26 Aug 2008 14:02:34 -0400 Date: Tue, 26 Aug 2008 15:02:22 -0300 From: "Luiz Fernando N. Capitulino" To: Mathieu Desnoyers Cc: Gerhard Brauer , "H. Peter Anvin" , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: 2.6.{26.2,27-rc} oops on virtualbox Message-ID: <20080826150222.0cf1542c@doriath.conectiva> In-Reply-To: <20080826171822.GB14906@Krystal> References: <20080822113941.147a1db0@doriath.conectiva> <20080822153451.GA8390@Krystal> <20080822132948.57e47076@doriath.conectiva> <20080822163520.GA9860@Krystal> <20080822142054.403cbdef@doriath.conectiva> <20080822175741.6bc83dc8@doriath.conectiva> <48AF2ABD.9070100@zytor.com> <20080826141851.GA5300@tux1.brauer.lan> <20080826145338.GA8601@Krystal> <20080826131354.356ae11d@doriath.conectiva> <20080826171822.GB14906@Krystal> Organization: Mandriva X-Mailer: Claws Mail 3.5.0 (GTK+ 2.13.7; i586-mandriva-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1444 Lines: 48 Em Tue, 26 Aug 2008 13:18:22 -0400 Mathieu Desnoyers escreveu: | * Luiz Fernando N. Capitulino (lcapitulino@mandriva.com.br) wrote: | > Em Tue, 26 Aug 2008 10:53:38 -0400 | > Mathieu Desnoyers escreveu: | > | > | Then, after having tested (2), try this on top of it : | > | | > | In arch/x86/kernel/alternative.c, alternatives_smp_switch() | > | | > | Add unsigned long flags; | > | Change | > | spin_lock -> spin_lock_irqsave(&smp_alt, flags); | > | spin_unlock(&smp_alt); -> spin_unlock_irqrestore(&smp_alt, flags); | > | > Hmm, I can't find spin_lock functions in alternatives_smp_switch() | > looks like the current implementation is now using mutexes. | > | | Sorry, I was looking directly at the commit which caused the problem. | Yes, these modif should go on top of the text_poke -> text_poke_early. | | So in current mainline, change, in alternatives_smp_switch() : | | mutex_lock(&smp_alt); | ... | | mutex_unlock(&smp_alt); | | to | | mutex_lock(&smp_alt); | local_irq_save(flags); | ... | | local_irq_restore(flags); | mutex_unlock(&smp_alt); Did not help, same oops here. -- Luiz Fernando N. Capitulino -- 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/