From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756640AbYFUKjw (ORCPT ); Sat, 21 Jun 2008 06:39:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753337AbYFUKjo (ORCPT ); Sat, 21 Jun 2008 06:39:44 -0400 Received: from an-out-0708.google.com ([209.85.132.251]:63562 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752715AbYFUKjn (ORCPT ); Sat, 21 Jun 2008 06:39:43 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=vTm5xPdnKPEEHjl9I9qeIQ5ALTFgtgQWB6Ogc7Vg8ljcMr4b2RipsB6h4EOXgqT1DR yGCCiN7Cutbg0cPCmv777h2DvQZS8YK1SX+vpaD7PRg4giNUdskTDGqRAhSUfVCjSAIS 2cj2IJYPLN2LOnzwuxT+Fi7BEWUddtyZaXM/k= Message-ID: <485CDA6A.103@gmail.com> Date: Sat, 21 Jun 2008 07:39:38 -0300 From: Kevin Winchester User-Agent: Thunderbird 2.0.0.14 (X11/20080505) MIME-Version: 1.0 To: Yinghai Lu CC: Ingo Molnar , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Linux Kernel Mailing List , "Rafael J. Wysocki" , Pavel Machek Subject: Re: Bisecting tip/auto-x86-next? References: <485AFC9B.7090502@gmail.com> <20080620101722.GD17692@elte.hu> <20080620153626.GE17373@elte.hu> <485C4484.3080706@gmail.com> <86802c440806201714p271b7b3fx68183c5f48208bee@mail.gmail.com> <485CD12C.9080404@gmail.com> <86802c440806210318p23fc61bo709c0965254de72@mail.gmail.com> <86802c440806210330r25529b93u9c57734ad4fce58d@mail.gmail.com> In-Reply-To: <86802c440806210330r25529b93u9c57734ad4fce58d@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Yinghai Lu wrote: > On Sat, Jun 21, 2008 at 3:23 AM, Kevin Winchester > wrote: >> On Sat, Jun 21, 2008 at 7:18 AM, Yinghai Lu wrote: >>> On Sat, Jun 21, 2008 at 3:00 AM, Kevin Winchester >>> wrote: >>>> Yinghai Lu wrote: >>>>> On Fri, Jun 20, 2008 at 5:00 PM, Kevin Winchester >>>>> wrote: >>>>>> Ingo Molnar wrote: >>>>>>> * Kevin Winchester wrote: >>>>>>> >>>>>>>>> hm, could you send me the config that triggered this? >>>>>>>> I will do so tonight when I am home again. It is a UP AMD64 box with a >>>>>>>> VIA chipset, if that helps. >>>>>>>> >>>>>>>>> btw., you can probably ignore this one safely. Also please tell me at >>>>>>>>> which commit ID you were at when you triggered this warning. >>>>>>>> Good to know - I will get the commit ID tonight as well, although >>>>>>>> wouldn't following the same bisection sequence that I did give you the >>>>>>>> same >>>>>>>> bisection point? I guess that would assume that linus/master and >>>>>>>> auto-x86-next haven't changed much since last night, which might not be >>>>>>>> correct. >>>>>>> yeah, you'd probably not hit that warning with the x86/gart bisection >>>>>>> sequence. (Assuming the bug is introduced in that branch - so you should >>>>>>> first check whether pure x86/gart kernel triggers the problem too.) >>>>>>> >>>>>>> If you still have the commit ID around then please send it - if you >>>>>>> dont, >>>>>>> no problem, it's no big issue. I wanted to check how wide the bisection >>>>>>> window is where the warning triggers. >>>>>>> >>>>>> I'm sorry - I accidentally checkout out x86/gart to test it before >>>>>> grabbing >>>>>> the commit ID. >>>>>> >>>>>> I went ahead with the bisection and found: >>>>>> >>>>>> >>>>>> >>>>>> 8c9fd91a0dc503f085169d44f4360be025f75224 is first bad commit >>>>>> commit 8c9fd91a0dc503f085169d44f4360be025f75224 >>>>>> Author: Yinghai Lu >>>>>> Date: Sun Apr 13 18:42:31 2008 -0700 >>>>>> >>>>>> x86: checking aperture size order >>>>>> >>>>>> some systems are using 32M for gart and agp when memory is less than >>>>>> 4G. >>>>>> Kernel will reject and try to allcate another 64M that is not needed, >>>>>> and we will waste 64M of perfectly good RAM. >>>>>> >>>>>> this patch adds a workaround by checking aper_base/order between NB and >>>>>> agp bridge. If they are the same, and memory size is less than 4G, it >>>>>> will allow it. >>>>>> >>>>>> Signed-off-by: Yinghai Lu >>>>>> Signed-off-by: Ingo Molnar >>>>>> Signed-off-by: Thomas Gleixner >>>>>> >>>>>> :040000 040000 848d6e4045a14d01fc0a794d4350d8a84f3ceff6 >>>>>> 4a10a52b41309060cd5dc1bf0c322f6d43b2477b M arch >>>>>> :040000 040000 aa1cee87b1f5b1b30ed03ce6164ad7f404fef2a3 >>>>>> f9ce0aaa1f7d4fdc7bdc5a43285495db53a6f531 M drivers >>>>>> >>>>>> >>>>>> as the first bad commit. I do not have time to look at the patch right >>>>>> now, >>>>>> but in case anyone else does, I figured I would post it. >>>>>> >>>>> please send out whole boot logs with "debug" in command line. >>>>> >>>> "debug" in the command line doesn't seem to have any effect on the printout >>>> (is there some config option I need to use with it?), but here it is anyway: >>> are you using tip/master? >>> >>> http://people.redhat.com/mingo/sched-devel.git/README >>> >> That log is from tip/x86/gart, which is where the problem patch was >> bisected. Would you get better debugging info from tip/master (which >> includes tip/x86/gart, I believe, and thus would show the problem as >> well)? > > tip/master doesn't work? > I will check tip/master now, but I believe it doesn't work. I will also correct myself, the log I sent you was from: 8c9fd91... x86: checking aperture size order -- Kevin Winchester