Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761005AbZLOTsX (ORCPT ); Tue, 15 Dec 2009 14:48:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755379AbZLOTsU (ORCPT ); Tue, 15 Dec 2009 14:48:20 -0500 Received: from 0122700014.0.fullrate.dk ([95.166.99.235]:55617 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758411AbZLOTsT (ORCPT ); Tue, 15 Dec 2009 14:48:19 -0500 Date: Tue, 15 Dec 2009 20:48:18 +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" Subject: Re: kexec boot regression Message-ID: <20091215194818.GU28252@kernel.dk> References: <20091215121436.GB28252@kernel.dk> <4B2781AC.8020301@kernel.org> <20091215123951.GD28252@kernel.dk> <4B278734.2040704@kernel.org> <20091215141105.GK28252@kernel.dk> <4B27D7E9.4030105@kernel.org> <20091215185941.GO28252@kernel.dk> <4B27DDD7.5040301@kernel.org> <20091215191129.GQ28252@kernel.dk> <4B27E71E.6020709@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B27E71E.6020709@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3241 Lines: 83 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: > >>>> [ 13.018720] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000) > >>>> > >>>> [ 13.100724] [Firmware Bug]: PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] not reserved in ACPI motherboard resources > >>> On a "normal" non-kexec boot, I get: > >>> > >>> [ 12.173583] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000) > >>> [ 12.184075] PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820 > >>> [ 12.216874] PCI: Using configuration type 1 for base access > >>> > >> can you run following scripts in first kernel? > >> > >> cd /sys/firmware/memmap > >> for dir in * ; do > >> start=$(cat $dir/start) > >> end=$(cat $dir/end) > >> type=$(cat $dir/type) > >> printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" >> /tmp/memmap.txt > >> done > >> > >> and send out /tmp/memmap.txt > > > > Below. > > > >> what is your kexec tools version? could be too old? > > > > It says: > > > > kexec-tools-testing 20080324 released 24th March 2008 > > > > > > 0000000000000000-0000000000098800 (System RAM) > > 0000000000098800-00000000000a0000 (reserved) > > 0000000079301000-0000000079303000 (reserved) > > 0000000079303000-0000000079305000 (ACPI Tables) > > 0000000079305000-0000000079310000 (reserved) > > 0000000079310000-0000000079314000 (ACPI Tables) > > 0000000079314000-0000000079319000 (reserved) > > 0000000079319000-0000000079336000 (ACPI Tables) > > 0000000079336000-0000000079358000 (reserved) > > 0000000079358000-0000000079388000 (ACPI Tables) > > 0000000079388000-00000000793c9000 (reserved) > > 00000000793c9000-000000007968f000 (ACPI Tables) > > 00000000000e0000-0000000000100000 (reserved) > > 000000007968f000-00000000796bb000 (reserved) > > 00000000796bb000-00000000799d8000 (ACPI Tables) > > 00000000799d8000-0000000079bd8000 (ACPI Non-volatile Storage) > > 0000000079bd8000-0000000079d8b000 (ACPI Tables) > > 0000000079d8b000-0000000079d8c000 (reserved) > > 0000000079d8c000-0000000079dc8000 (ACPI Tables) > > 0000000079dc8000-0000000079dcb000 (reserved) > > 0000000079dcb000-0000000079e1c000 (ACPI Tables) > > 0000000079e1c000-0000000079e87000 (reserved) > > 0000000079e87000-000000007bd5f000 (ACPI Tables) > > 0000000000100000-0000000078c59000 (System RAM) > > 000000007bd5f000-000000007be4f000 (reserved) > > 000000007be4f000-000000007bf87000 (ACPI Tables) > > so following ranges are not passed to second kernel by kexec? I have the following addition to my kexec kernel command line: memmap=62G@4G since that last big 62G RAM entry doesn't show up without it, that's why you see a user defined e820 map as well in the boot logs. So a kexec'ed kernel is missing at least that entry. I just tried with the latest and greatest kexec-tools (2.0.1) and there's no difference. -- 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/