From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754075AbYI2X5p (ORCPT ); Mon, 29 Sep 2008 19:57:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751904AbYI2X5i (ORCPT ); Mon, 29 Sep 2008 19:57:38 -0400 Received: from smtp2.ono.com ([62.42.230.20]:24526 "EHLO resmaa03.ono.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751713AbYI2X5h (ORCPT ); Mon, 29 Sep 2008 19:57:37 -0400 Date: Tue, 30 Sep 2008 01:57:33 +0200 From: "J.A. =?UTF-8?B?TWFnYWxsw7Nu?=" To: Linux-Kernel Subject: Strange mtrrs in Aspire One Message-ID: <20080930015733.5c6ea984@werewolf.home> X-Mailer: Claws Mail 3.5.0cvs138 (GTK+ 2.14.3; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all... My aspire one is giving some strange MTRR settings with rc7-git5 (and prevous kernels, but that is what I run now...): one:~> cat /proc/mtrr reg00: base=0xfffe0000 (4095MB), size= 128KB: write-protect, count=1 reg01: base=0xfffc0000 (4095MB), size= 128KB: uncachable, count=1 reg02: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 reg03: base=0x10000000 ( 256MB), size= 256MB: write-back, count=1 reg04: base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1 reg05: base=0x1f600000 ( 502MB), size= 2MB: uncachable, count=1 reg06: base=0x1f500000 ( 501MB), size= 1MB: uncachable, count=1 reg07: base=0x00000000 ( 0MB), size= 128KB: uncachable, count=1 Therefor, intel x11 driver can not set its own MTRRs, no space left. For example, could not this two reg02: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 reg03: base=0x10000000 ( 256MB), size= 256MB: write-back, count=1 in one reg02: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1 ?? And some people (google :)) say that this: reg04: base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1 is a failed attempt to set up video memory. (http://bbs.archlinux.org/viewtopic.php?pid=412972) Add what are these ? reg05: base=0x1f600000 ( 502MB), size= 2MB: uncachable, count=1 reg06: base=0x1f500000 ( 501MB), size= 1MB: uncachable, count=1 And, btw, could MTRR display be ordered by base address ? This would make things much clear to understand...: one:~> cat /proc/mtrr | cut -d' ' -f2- | sort base=0x00000000 ( 0MB), size= 128KB: uncachable, count=1 base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 base=0x10000000 ( 256MB), size= 256MB: write-back, count=1 base=0x1f500000 ( 501MB), size= 1MB: uncachable, count=1 base=0x1f600000 ( 502MB), size= 2MB: uncachable, count=1 base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1 base=0xfffc0000 (4095MB), size= 128KB: uncachable, count=1 base=0xfffe0000 (4095MB), size= 128KB: write-protect, count=1 TIA. dmesg: Linux version 2.6.27-desktop-0.rc7.5.1mnb BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000001f376000 (usable) BIOS-e820: 000000001f376000 - 000000001f3bf000 (reserved) BIOS-e820: 000000001f3bf000 - 000000001f46d000 (usable) BIOS-e820: 000000001f46d000 - 000000001f4bf000 (ACPI NVS) BIOS-e820: 000000001f4bf000 - 000000001f4f0000 (usable) BIOS-e820: 000000001f4f0000 - 000000001f4ff000 (ACPI data) BIOS-e820: 000000001f4ff000 - 000000001f500000 (usable) BIOS-e820: 000000001f500000 - 0000000020000000 (reserved) BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved) BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved) BIOS-e820: 00000000fed1c000 - 00000000fed20000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved) last_pfn = 0x1f500 max_arch_pfn = 0x100000 x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 kernel direct mapping tables up to 1f500000 @ 7000-d000 RAMDISK: 1f099000 - 1f365ea7 ... 0MB HIGHMEM available. 501MB LOWMEM available. mapped low ram: 0 - 1f500000 low ram: 00000000 - 1f500000 bootmap 00002000 - 00005ea0 (9 early reservations) ==> bootmem [0000000000 - 001f500000] #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000] #1 [0000001000 - 0000002000] EX TRAMPOLINE ==> [0000001000 - 0000002000] #2 [0000006000 - 0000007000] TRAMPOLINE ==> [0000006000 - 0000007000] #3 [0000100000 - 0000590800] TEXT DATA BSS ==> [0000100000 - 0000590800] #4 [001f099000 - 001f365ea7] RAMDISK ==> [001f099000 - 001f365ea7] #5 [0000591000 - 0000594000] INIT_PG_TABLE ==> [0000591000 - 0000594000] #6 [000009fc00 - 0000100000] BIOS reserved ==> [000009fc00 - 0000100000] #7 [0000007000 - 0000009000] PGTABLE ==> [0000007000 - 0000009000] #8 [0000002000 - 0000006000] BOOTMAP ==> [0000002000 - 0000006000] Zone PFN ranges: DMA 0x00000000 -> 0x00001000 Normal 0x00001000 -> 0x0001f500 HighMem 0x0001f500 -> 0x0001f500 Movable zone start PFN for each node early_node_map[5] active PFN ranges 0: 0x00000000 -> 0x0000009f 0: 0x00000100 -> 0x0001f376 0: 0x0001f3bf -> 0x0001f46d 0: 0x0001f4bf -> 0x0001f4f0 0: 0x0001f4ff -> 0x0001f500 On node 0 totalpages: 127989 free_area_init_node: node 0, pgdat c049a000, node_mem_map c1000000 DMA zone: 3967 pages, LIFO batch:0 Normal zone: 123020 pages, LIFO batch:31 -- J.A. Magallon \ Software is like sex: \ It's better when it's free Mandriva Linux release 2009.0 (Cooker) for i586 Linux 2.6.25-jam18 (gcc 4.3.1 20080626 (GCC) #1 SMP