Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755959AbYFUKaS (ORCPT ); Sat, 21 Jun 2008 06:30:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752735AbYFUKaF (ORCPT ); Sat, 21 Jun 2008 06:30:05 -0400 Received: from rv-out-0506.google.com ([209.85.198.234]:18529 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752522AbYFUKaD (ORCPT ); Sat, 21 Jun 2008 06:30:03 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=OAbhh98HFXD461oPGM33vUiKTH4br7cUrysIRIRn+wvv+85Z0T0nKzvf90zgR9KF8O ufuDD2sFra6A5rM/7QTWmteBEPFzVt+g6WJx5cLwsiyXbHE/XIIQwa0Rnee4FVUlD9sL BZAHsAWj51BLCnZ5WUv3SCU7pDzJjwlm4gEcU= Message-ID: <86802c440806210330r25529b93u9c57734ad4fce58d@mail.gmail.com> Date: Sat, 21 Jun 2008 03:30:02 -0700 From: "Yinghai Lu" To: "Kevin Winchester" Subject: Re: Bisecting tip/auto-x86-next? Cc: "Ingo Molnar" , "Ingo Molnar" , "Thomas Gleixner" , "H. Peter Anvin" , "Linux Kernel Mailing List" , "Rafael J. Wysocki" , "Pavel Machek" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3911 Lines: 101 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? YH -- 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/