From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758707AbYD3E0L (ORCPT ); Wed, 30 Apr 2008 00:26:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752186AbYD3EZ5 (ORCPT ); Wed, 30 Apr 2008 00:25:57 -0400 Received: from qb-out-1314.google.com ([72.14.204.172]:54503 "EHLO qb-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751124AbYD3EZ4 (ORCPT ); Wed, 30 Apr 2008 00:25:56 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=mL2gKgdU55lOGKMPMPu3+a906QEiqBRfDO1mAExBeDDzEp2tkYbVBx4yzqCJVGfakIX74o3riJDdi2rpi2o9+vGVEhQPWsAEJa5GAH6MPKxpHGLucxL0n0BZXDhpg3Rz3h08Gf9vHDiPwtIYA5u9NjQqSyq8ulPVriQ0G8G3E/I= Message-ID: <86802c440804292125o1539f252g6fbb10fecd8c8c5a@mail.gmail.com> Date: Tue, 29 Apr 2008 21:25:52 -0700 From: "Yinghai Lu" To: "Gabriel C" Subject: Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous to discrete layout v7 Cc: "Andrew Morton" , "Ingo Molnar" , "H. Peter Anvin" , "Thomas Gleixner" , "Mika Fischer" , "linux-kernel@vger.kernel.org" In-Reply-To: <4817F1B8.9030007@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200804272337.40130.yhlu.kernel@gmail.com> <48178434.90701@googlemail.com> <86802c440804291449y50f178a6x4e200c26840493a@mail.gmail.com> <4817B5B0.5090606@googlemail.com> <4817B811.9070707@googlemail.com> <86802c440804291738p401e339djda18d24bce324795@mail.gmail.com> <4817C52A.8000000@googlemail.com> <86802c440804292000j1b559bc2y8281fa1608d8e4af@mail.gmail.com> <86802c440804292029y4a22e322s54220923f32f283f@mail.gmail.com> <4817F1B8.9030007@googlemail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 29, 2008 at 9:12 PM, Gabriel C wrote: > > Yinghai Lu wrote: > > please try the patches > > > > from > > http://lkml.org/lkml/2008/4/29/754 > > http://lkml.org/lkml/2008/4/29/753 > > > > in addtion to > > > > http://people.redhat.com/mingo/x86.git/README > > ( it has v8 already) > > > > and try with mtrr_gran_size=128m > > Without any value I get : > > ... > > [ 0.000000] Linux version 2.6.25-x86-latest.git-06598-g6a2c2ff-dirty (crazy@thor) (gcc version 4.3.0 (Frugalware Linux) ) #1 SMP PREEMPT Wed Apr 30 05:51:39 CEST 2008 > > > [ 0.000000] Command line: root=/dev/sdb1 ro debug vga=0x317 > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > [ 0.000000] max_pfn_mapped = 1228800 > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > [ 0.000000] range: 00000000c0000000 - 00000000cf600000 > > [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 128MB, type WB > [ 0.000000] Setting variable MTRR 3, base: 3200MB, range: 64MB, type WB > [ 0.000000] Setting variable MTRR 4, base: 3264MB, range: 32MB, type WB > [ 0.000000] Setting variable MTRR 5, base: 3296MB, range: 16MB, type WB > [ 0.000000] Setting variable MTRR 6, base: 3312MB, range: 4MB, type WB > [ 0.000000] Setting variable MTRR 7, base: 3316MB, range: 2MB, type WB > [ 0.000000] range0: 00000000cf800000 - 00000000df800000 > [ 0.000000] range: 00000000df800000 - 00000000d0000000 > > [ 0.000000] DONE variable MTRRs > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 704MB of RAM. > > [ 0.000000] update e820 for mtrr > > [ 0.000000] modified physical RAM map: > [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] modified: 0000000000100000 - 00000000cf550000 (usable) > [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > > [ 0.000000] modified: 00000000ffc00000 - 000000012c000000 (reserved) > [ 0.000000] Entering add_active_range(0, 0, 156) 3 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 849232) 3 entries of 256 used > > [ 0.000000] max_pfn_mapped = 1228800 > [ 0.000000] init_memory_mapping > > ... > > [ 20.984343] [drm] Initialized i915 1.6.0 20060119 on minor 0 > [ 21.450368] mtrr: no more MTRRs available > > ... > > with mtrr_gran_size=128m I get : > > ... > > [ 0.000000] Linux version 2.6.25-x86-latest.git-06598-g6a2c2ff-dirty (crazy@thor) (gcc version 4.3.0 (Frugalware Linux) ) #1 SMP PREEMPT Wed Apr 30 05:51:39 CEST 2008 > [ 0.000000] Command line: root=/dev/sdb1 ro debug vga=0x317 mtrr_gran_size=128m > > > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] BIOS-e820: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] BIOS-e820: 0000000000100000 - 00000000cf550000 (usable) > [ 0.000000] BIOS-e820: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] BIOS-e820: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] BIOS-e820: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > [ 0.000000] BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved) > [ 0.000000] BIOS-e820: 0000000100000000 - 000000012c000000 (usable) > [ 0.000000] Entering add_active_range(0, 0, 156) 0 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 849232) 1 entries of 256 used > [ 0.000000] Entering add_active_range(0, 1048576, 1228800) 2 entries of 256 used > [ 0.000000] max_pfn_mapped = 1228800 > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 000000000012c000 > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000cf600 > [ 0.000000] MTRR MAP PFN: 00000000000cf800 - 00000000000d0000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 000000000012c000 > [ 0.000000] range0: 0000000000000000 - 00000000c0000000 > [ 0.000000] Setting variable MTRR 0, base: 0MB, range: 2048MB, type WB > [ 0.000000] Setting variable MTRR 1, base: 2048MB, range: 1024MB, type WB > [ 0.000000] range: 00000000c0000000 - 00000000c8000000 > [ 0.000000] Setting variable MTRR 2, base: 3072MB, range: 128MB, type WB > [ 0.000000] rangeX: 00000000d0000000 - 00000000d0000000 > [ 0.000000] range0: 0000000100000000 - 0000000120000000 > [ 0.000000] Setting variable MTRR 3, base: 4096MB, range: 512MB, type WB > [ 0.000000] range: 0000000120000000 - 0000000128000000 > [ 0.000000] Setting variable MTRR 4, base: 4608MB, range: 128MB, type WB > [ 0.000000] DONE variable MTRRs > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106 > [ 0.000000] After WB checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] After UC checking > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] After sorting > [ 0.000000] MTRR MAP PFN: 0000000000000000 - 00000000000c8000 > [ 0.000000] MTRR MAP PFN: 0000000000100000 - 0000000000128000 > [ 0.000000] WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 181MB of RAM. > > [ 0.000000] update e820 for mtrr > > [ 0.000000] modified physical RAM map: > [ 0.000000] modified: 0000000000000000 - 000000000009cc00 (usable) > [ 0.000000] modified: 000000000009cc00 - 00000000000a0000 (reserved) > [ 0.000000] modified: 00000000000e4000 - 0000000000100000 (reserved) > [ 0.000000] modified: 0000000000100000 - 00000000c8000000 (usable) > [ 0.000000] modified: 00000000c8000000 - 00000000cf550000 (reserved) > [ 0.000000] modified: 00000000cf550000 - 00000000cf55e000 (ACPI data) > [ 0.000000] modified: 00000000cf55e000 - 00000000cf5e0000 (ACPI NVS) > [ 0.000000] modified: 00000000cf5e0000 - 00000000cf600000 (reserved) > [ 0.000000] modified: 00000000fee00000 - 00000000fee01000 (reserved) > > [ 0.000000] modified: 00000000ffc00000 - 0000000100000000 (reserved) > [ 0.000000] modified: 0000000100000000 - 0000000128000000 (usable) > [ 0.000000] modified: 0000000128000000 - 000000012c000000 (reserved) > > [ 0.000000] Entering add_active_range(0, 0, 156) 3 entries of 256 used > [ 0.000000] Entering add_active_range(0, 256, 819200) 3 entries of 256 used > [ 0.000000] Entering add_active_range(0, 1048576, 1212416) 3 entries of 256 used > > [ 0.000000] max_pfn_mapped = 1228800 > [ 0.000000] init_memory_mapping > > ... > > I will try tomorrow some more boot options but now I need some sleep ;) thanks. let's try different mtrr_chunk_size/mtrr_gran_size to get back more ram. under mtrr_gran_size=128m, does the your X server work well..., fast or slow? YH YH