From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755520AbYIHVZq (ORCPT ); Mon, 8 Sep 2008 17:25:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754093AbYIHVZj (ORCPT ); Mon, 8 Sep 2008 17:25:39 -0400 Received: from mail-gx0-f16.google.com ([209.85.217.16]:51955 "EHLO mail-gx0-f16.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753676AbYIHVZi (ORCPT ); Mon, 8 Sep 2008 17:25:38 -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=fR93xHjQV6wkN5eQPlZAFYcoXoU9IgqDgOP0rjHI1cwks4Y1Q6ad2w5H6h+XJiOYB6 k7WbQwiDVhvK/4PVM00wWQ7hBcIdImlKf6+oy4ANMXS4q0QskOvALY8TNyiyqcaUigPW 9tS3Bi1syUEzjheIvNGlWKI6eAbBtEQyOMWUM= Message-ID: <68676e00809081425r604baefaqd1ebb9502f5d9049@mail.gmail.com> Date: Mon, 8 Sep 2008 23:25:36 +0200 From: "Luca Tettamanti" To: "Yinghai Lu" Subject: Re: [2.6.27] overlapping early reservations [was: early exception - lockdep related?] Cc: "Ingo Molnar" , "H. Peter Anvin" , "Peter Zijlstra" , linux-kernel@vger.kernel.org, mingo@redhat.com In-Reply-To: <86802c440809081346i3fccea34u81f6b252b6c0c2a0@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <68676e00809051217h3da02a6bld4412b4a2ee3b728@mail.gmail.com> <68676e00809060620k35679302s42fc0a74aa1dc2d3@mail.gmail.com> <20080906145122.GA7693@elte.hu> <86802c440809060906h721d6243t4a3b5fb604a9d7b3@mail.gmail.com> <68676e00809081054j3fb9c5bq76c9a6aceea35aa2@mail.gmail.com> <86802c440809081104i23b477e1w62bd5967b79529cb@mail.gmail.com> <68676e00809081214h49eb07d4tb6145e8b47b00768@mail.gmail.com> <86802c440809081235q57470134t51c61e2a6b97dc87@mail.gmail.com> <68676e00809081300h2c835a44h3d55d0794852d75@mail.gmail.com> <86802c440809081346i3fccea34u81f6b252b6c0c2a0@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 8, 2008 at 10:46 PM, Yinghai Lu wrote: > On Mon, Sep 8, 2008 at 1:00 PM, Luca Tettamanti wrote: >> On Mon, Sep 8, 2008 at 9:35 PM, Yinghai Lu wrote: >>> On Mon, Sep 8, 2008 at 12:14 PM, Luca Tettamanti wrote: >>>> On Mon, Sep 8, 2008 at 8:04 PM, Yinghai Lu wrote: >>>>> On Mon, Sep 8, 2008 at 10:54 AM, Luca Tettamanti wrote: >>>>> >>>>> can you post boot log with working kernel + "debug"? >>>> >>>> This is the map of the early reservations (will send the dmesg + debug later): >>>> >>>> [ 0.000000] (6 early reservations) ==> bootmem [0000000000 - 00bbf90000] >>>> [ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> >>>> [0000000000 - 0000001000] >>>> [ 0.000000] #1 [0000006000 - 0000008000] TRAMPOLINE ==> >>>> [0000006000 - 0000008000] >>>> [ 0.000000] #2 [0000200000 - 0000d012b8] TEXT DATA BSS ==> >>>> [0000200000 - 0000d012b8] >>>> [ 0.000000] #3 [00037dc000 - 00040fe2d9] RAMDISK ==> >>>> [00037dc000 - 00040fe2d9] >>>> [ 0.000000] #4 [000009c800 - 0000100000] BIOS reserved ==> >>>> [000009c800 - 0000100000] >>>> [ 0.000000] #5 [0000008000 - 000000b000] PGTABLE ==> >>>> [0000008000 - 000000b000] >>>> >>>> As a side note: I've bigger older (2.6.26) kernels that boots fine, >>>> and smaller 2.6.27 kernels that do not work, e.g. this one: >>> >>> that could explain sth. big kernel use more, and lilo put ramdisk >>> high from 0x37dc000 >>> >>>> >>>> Overlapping early reservations b71000-effb43 RAMDISK to 200000-c84ecf >>>> TEXT DATA BSS >>> >>> need to figure out, lilo put ramdisk so low... >>> >>> need to know e820 table layout... >> >> BIOS-provided physical RAM map: >> BIOS-e820: 0000000000000000 - 000000000009c800 (usable) >> BIOS-e820: 000000000009c800 - 00000000000a0000 (reserved) >> BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) >> BIOS-e820: 0000000000100000 - 00000000bbf90000 (usable) >> BIOS-e820: 00000000bbf90000 - 00000000bbf9e000 (ACPI data) >> BIOS-e820: 00000000bbf9e000 - 00000000bbfe0000 (ACPI NVS) >> BIOS-e820: 00000000bbfe0000 - 00000000bc000000 (reserved) >> BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) >> BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) >> last_pfn = 0xbbf90 max_arch_pfn = 0x3ffffffff >> >> dmesg is attached, but I haven't rebooted yet. > > so some config works, others not? Yes, that's correct, but it doesn't seem related to a particular configuration item (moon phase maybe). For example the kernel I'm using right now (-rc4-something) has the same config as a non-working kernel minus LOCKDEP, but git-current minus LOCKDEP does not work. On another kernel I got a working config just enabling DEBUG_INFO, in another case I disabled MTD. Luca