Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753543AbZLOLoM (ORCPT ); Tue, 15 Dec 2009 06:44:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752327AbZLOLoM (ORCPT ); Tue, 15 Dec 2009 06:44:12 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:59138 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750774AbZLOLoL (ORCPT ); Tue, 15 Dec 2009 06:44:11 -0500 Date: Tue, 15 Dec 2009 12:43:51 +0100 From: Ingo Molnar To: Yinghai Lu Cc: FUJITA Tomonori , rdreier@cisco.com, linux-kernel@vger.kernel.org, Christoph Lameter Subject: Re: bisected crash due to "x86: Move swiotlb initialization before dma32_free_bootmem" Message-ID: <20091215114351.GA32722@elte.hu> References: <4B2752A9.10903@kernel.org> <20091215182243R.fujita.tomonori@lab.ntt.co.jp> <20091215105650.GA13214@elte.hu> <20091215201039V.fujita.tomonori@lab.ntt.co.jp> <4B277235.4010308@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B277235.4010308@kernel.org> 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=3.2.5 -2.0 BAYES_00 BODY: Bayesian 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: 1291 Lines: 38 * Yinghai Lu wrote: > FUJITA Tomonori wrote: > > On Tue, 15 Dec 2009 11:56:50 +0100 > > Ingo Molnar wrote: > > > >> * FUJITA Tomonori wrote: > >> > >>> There are a few people who hit this. How many people use a box with over > >>> 256GB memory? > >>> > >>> And you can work around this with "dma32_size" kernel boot option. > >> Well, since the kernel has not crashed before this change there's really just > >> two options as per upstream kernel regression policy: either we fix it or we > >> revert it. > > > > As I wrote, here is a patch that can be applied to cleanly to the git > > head: > > > > http://www.kernel.org/pub/linux/kernel/people/tomo/misc/0001-x86-two-stage-swiotlb-initialization.patch > > > > It fixes the problem. Yinghai, can you test it? It should work but > > it's good to confirm it. > > i tested already, it works. Ok, mind someone please resend the agreed-upon patch with a Tested-by/Acked-by line so that i can apply 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/