Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760074AbZLOTpr (ORCPT ); Tue, 15 Dec 2009 14:45:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754566AbZLOTpp (ORCPT ); Tue, 15 Dec 2009 14:45:45 -0500 Received: from hera.kernel.org ([140.211.167.34]:49243 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753519AbZLOTpn (ORCPT ); Tue, 15 Dec 2009 14:45:43 -0500 Message-ID: <4B27E71E.6020709@kernel.org> Date: Tue, 15 Dec 2009 11:44:30 -0800 From: Yinghai Lu User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Jens Axboe CC: Jesse Barnes , Linux Kernel , mingo@elte.hu, rdreier@cisco.com, Suresh Siddha , "linux-pci@vger.kernel.org" Subject: Re: kexec boot regression References: <20091215115052.GA28252@kernel.dk> <4B277AB2.8030107@kernel.org> <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> In-Reply-To: <20091215191129.GQ28252@kernel.dk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6027 Lines: 157 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? > 000000007bf87000-000000007bfcf000 (ACPI Non-volatile Storage) > 000000007bfcf000-000000007bfff000 (ACPI Tables) > 000000007bfff000-0000000090000000 (reserved) > 00000000fc000000-00000000fd000000 (reserved) > 00000000fed1c000-00000000fed20000 (reserved) > 00000000ff000000-0000000100000000 (reserved) > 0000000100000000-0000001080000000 (System RAM) > 0000000078c59000-0000000078e6d000 (ACPI Non-volatile Storage) > 0000000078e6d000-000000007924e000 (ACPI Tables) > 000000007924e000-00000000792c2000 (reserved) > 00000000792c2000-00000000792d2000 (ACPI Tables) > 00000000792d2000-00000000792e7000 (reserved) > 00000000792e7000-0000000079301000 (ACPI Tables) > second kernel only get [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000100 - 0000000000098800 (usable) [ 0.000000] BIOS-e820: 0000000000098800 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 0000000078c63000 (usable) [ 0.000000] BIOS-e820: 0000000078c63000 - 0000000078e77000 (ACPI NVS) [ 0.000000] BIOS-e820: 0000000078e77000 - 000000007924e000 (ACPI data) [ 0.000000] BIOS-e820: 000000007924e000 - 00000000792c2000 (reserved) [ 0.000000] BIOS-e820: 00000000792c2000 - 00000000792d2000 (ACPI data) [ 0.000000] BIOS-e820: 00000000792d2000 - 00000000792e7000 (reserved) [ 0.000000] BIOS-e820: 00000000792e7000 - 0000000079301000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079301000 - 0000000079303000 (reserved) [ 0.000000] BIOS-e820: 0000000079303000 - 0000000079305000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079305000 - 0000000079310000 (reserved) [ 0.000000] BIOS-e820: 0000000079310000 - 0000000079314000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079314000 - 0000000079319000 (reserved) [ 0.000000] BIOS-e820: 0000000079319000 - 0000000079336000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079336000 - 0000000079358000 (reserved) [ 0.000000] BIOS-e820: 0000000079358000 - 0000000079388000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079388000 - 00000000793c9000 (reserved) [ 0.000000] BIOS-e820: 00000000793c9000 - 000000007968f000 (ACPI data) [ 0.000000] BIOS-e820: 000000007968f000 - 00000000796bb000 (reserved) [ 0.000000] BIOS-e820: 00000000796bb000 - 00000000799d8000 (ACPI data) [ 0.000000] BIOS-e820: 00000000799d8000 - 0000000079bd8000 (ACPI NVS) [ 0.000000] BIOS-e820: 0000000079bd8000 - 0000000079d87000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079d87000 - 0000000079d8a000 (reserved) [ 0.000000] BIOS-e820: 0000000079d8a000 - 0000000079dca000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079dca000 - 0000000079dcb000 (reserved) [ 0.000000] BIOS-e820: 0000000079dcb000 - 0000000079e1c000 (ACPI data) [ 0.000000] BIOS-e820: 0000000079e1c000 - 0000000079e87000 (reserved) [ 0.000000] BIOS-e820: 0000000079e87000 - 000000007bd5f000 (ACPI data) [ 0.000000] BIOS-e820: 000000007bd5f000 - 000000007be4f000 (reserved) [ 0.000000] BIOS-e820: 000000007be4f000 - 000000007bf87000 (ACPI data) so mmconf range is not reserved, and some ACPI data > 0000000078c59000-0000000078e6d000 (ACPI Non-volatile Storage) 0000000078c59000 - 0000000078c63000 get currupted... 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