Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933744AbZLOVaj (ORCPT ); Tue, 15 Dec 2009 16:30:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933713AbZLOVag (ORCPT ); Tue, 15 Dec 2009 16:30:36 -0500 Received: from 0122700014.0.fullrate.dk ([95.166.99.235]:54036 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933701AbZLOVad (ORCPT ); Tue, 15 Dec 2009 16:30:33 -0500 Date: Tue, 15 Dec 2009 22:30:32 +0100 From: Jens Axboe To: Yinghai Lu Cc: Jesse Barnes , Linux Kernel , mingo@elte.hu, rdreier@cisco.com, Suresh Siddha , "linux-pci@vger.kernel.org" , "H. Peter Anvin" , Huang Ying Subject: Re: kexec boot regression Message-ID: <20091215213032.GC28252@kernel.dk> References: <20091215194319.GT28252@kernel.dk> <4B27E817.6030705@kernel.org> <20091215195111.GV28252@kernel.dk> <4B27EE38.1050103@kernel.org> <20091215201909.GY28252@kernel.dk> <4B27EFC2.1000505@kernel.org> <20091215204221.GZ28252@kernel.dk> <20091215205512.GA28252@kernel.dk> <20091215210126.GB28252@kernel.dk> <4B27FEFB.30902@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B27FEFB.30902@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2383 Lines: 61 On Tue, Dec 15 2009, Yinghai Lu wrote: > Jens Axboe wrote: > > On Tue, Dec 15 2009, Jens Axboe wrote: > >> On Tue, Dec 15 2009, Jens Axboe wrote: > >>> On Tue, Dec 15 2009, Yinghai Lu wrote: > >>>> Jens Axboe wrote: > >>>>> On Tue, Dec 15 2009, Yinghai Lu wrote: > >>>>>> Jens Axboe wrote: > >>>>>>> On Tue, Dec 15 2009, Yinghai Lu wrote: > >>>>>>>> Jens Axboe wrote: > >>>>>>>>> On Tue, Dec 15 2009, Yinghai Lu wrote: > >>>>>>>>>> [PATCH] x86/pci: intel ioh bus num reg accessing fix > >>>>>>>>>> > >>>>>>>>>> it is above 0x100, so if mmconf is not enable, need to skip it > >>>>>>>>> This works, it kexecs kernels fine. But since 2.6.32 doesn't have the > >>>>>>>>> mmconf problem to begin with, are we now just working around the issue? > >>>>>>>>> SRAT still reports issues, numa doesn't work. > >>>>>>>> that patch will be bullet proof... we need it. > >>>>>>>> > >>>>>>>> also still need to figure out why memmap range is not passed properly. > >>>>>>>> > >>>>>>>> do you mean 2.6.32 kexec 2.6.32 it have worked mmconf and numa in > >>>>>>>> second kernel? > >>>>>>> Yes, 2.6.32 booted and 2.6.32 kexec'ed works just fine, no SRAT > >>>>>>> complaints and NUMA works fine. > >>>>>> do you need > >>>>>> memmap=62G@4G > >>>>>> in this case? > >>>>> Yes, I've needed that always. > >>>> good, > >>>> > >>>> can you enable debug option in kexec to see why kexec can not pass > >>>> whole 38? range to second kernel? > >>> Not getting any output so far, -d doesn't do much. Poking around in the > >>> source... > >> OK, cold boot and kexec 2.0.1 gets all 39 ranges passed properly to > >> kexec'ed kernels. Since the older kexec stopped at range 30 (31 ranges > >> total), that smells like just a kexec bug. Retesting -git... > > > > Current -git works fine when all the ranges are passed correctly. So, I > > think, the only existing regression is the SRAT issue. > > did you change node_shift? Yes: CONFIG_NODES_SHIFT=6 What I don't get is that 2.6.32 and -git print the same PXM map, and in both cases it's totalling exactly 64G. Yet it says: SRAT: PXMs only cover 49035MB of your 65419MB e820 RAM. Not used. -- Jens Axboe -- 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/