Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755987AbYHYLKh (ORCPT ); Mon, 25 Aug 2008 07:10:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751273AbYHYLK2 (ORCPT ); Mon, 25 Aug 2008 07:10:28 -0400 Received: from embla.aitel.hist.no ([158.38.50.22]:38094 "EHLO embla.aitel.hist.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751043AbYHYLK1 (ORCPT ); Mon, 25 Aug 2008 07:10:27 -0400 Message-ID: <48B29320.5070903@aitel.hist.no> Date: Mon, 25 Aug 2008 13:10:24 +0200 From: Helge Hafting User-Agent: Mozilla-Thunderbird 2.0.0.14 (X11/20080509) MIME-Version: 1.0 To: Yinghai Lu CC: Alexander Huemer , "Pallipadi, Venkatesh" , "Rafael J. Wysocki" , "linux-kernel@vger.kernel.org" , Andi Kleen Subject: Re: 2.6.27 mtrr fixes do not work when X starts References: <4899AF8E.20105@sbg.ac.at> <86802c440808071616o23dde07atd694b45375f9d6ac@mail.gmail.com> <86802c440808071617i1344e595wb9cc7c2bf75a5b3f@mail.gmail.com> <489B85A3.7030500@sbg.ac.at> <86802c440808071658yd120d04y370859dcf5a7b759@mail.gmail.com> <48A43CB5.8010709@sbg.ac.at> <86802c440808141031p2712976cqe2c34d3b986ad810@mail.gmail.com> <48AD8125.7050104@sbg.ac.at> <86802c440808210827y72bb1ec0ndcb97b00d6af3a9c@mail.gmail.com> <48AE90BB.5090800@aitel.hist.no> <86802c440808221024u1f152a73hf060f70e1b16dccb@mail.gmail.com> In-Reply-To: <86802c440808221024u1f152a73hf060f70e1b16dccb@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10918 Lines: 237 Yinghai Lu wrote: > On Fri, Aug 22, 2008 at 3:11 AM, Helge Hafting > [old bug report removed] > please boot with "mtrr_spare_reg_nr=3 debug" > I did that, and got: dmesg: Command line: root=/dev/sda2 ro mtrr_spare_reg=3 debug KERNEL supported cpus: Intel GenuineIntel AMD AuthenticAMD Centaur CentaurHauls BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f000 (usable) BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved) BIOS-e820: 0000000000100000 - 000000007fe80400 (usable) BIOS-e820: 000000007fe80400 - 0000000080000000 (reserved) BIOS-e820: 00000000f4000000 - 00000000f8000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved) BIOS-e820: 00000000fed18000 - 00000000fed1c000 (reserved) BIOS-e820: 00000000fed20000 - 00000000fed90000 (reserved) BIOS-e820: 00000000feda0000 - 00000000feda6000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved) BIOS-e820: 00000000ffe00000 - 0000000100000000 (reserved) last_pfn = 0x7fe80 max_arch_pfn = 0x3ffffffff x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 total RAM coverred: 2047M gran_size: 1M chunk_size: 1M num_reg: 8 lose RAM: 7M gran_size: 1M chunk_size: 2M num_reg: 8 lose RAM: 7M gran_size: 1M chunk_size: 4M num_reg: 8 lose RAM: 7M gran_size: 1M chunk_size: 8M num_reg: 8 lose RAM: 7M *BAD* gran_size: 1M chunk_size: 16M num_reg: 8 lose RAM: -1M gran_size: 1M chunk_size: 32M num_reg: 8 lose RAM: 0M gran_size: 1M chunk_size: 64M num_reg: 7 lose RAM: 0M gran_size: 1M chunk_size: 128M num_reg: 6 lose RAM: 0M gran_size: 1M chunk_size: 256M num_reg: 5 lose RAM: 0M gran_size: 1M chunk_size: 512M num_reg: 4 lose RAM: 0M gran_size: 1M chunk_size: 1024M num_reg: 3 lose RAM: 0M gran_size: 1M chunk_size: 2048M num_reg: 2 lose RAM: 0M gran_size: 1M chunk_size: 4096M num_reg: 8 lose RAM: 7M gran_size: 2M chunk_size: 2M num_reg: 8 lose RAM: 7M gran_size: 2M chunk_size: 4M num_reg: 8 lose RAM: 7M gran_size: 2M chunk_size: 8M num_reg: 8 lose RAM: 7M *BAD* gran_size: 2M chunk_size: 16M num_reg: 8 lose RAM: -1M gran_size: 2M chunk_size: 32M num_reg: 8 lose RAM: 1M gran_size: 2M chunk_size: 64M num_reg: 7 lose RAM: 1M gran_size: 2M chunk_size: 128M num_reg: 6 lose RAM: 1M gran_size: 2M chunk_size: 256M num_reg: 5 lose RAM: 1M gran_size: 2M chunk_size: 512M num_reg: 4 lose RAM: 1M gran_size: 2M chunk_size: 1024M num_reg: 3 lose RAM: 1M gran_size: 2M chunk_size: 2048M num_reg: 2 lose RAM: 1M gran_size: 2M chunk_size: 4096M num_reg: 8 lose RAM: 7M gran_size: 4M chunk_size: 4M num_reg: 8 lose RAM: 7M gran_size: 4M chunk_size: 8M num_reg: 8 lose RAM: 7M *BAD* gran_size: 4M chunk_size: 16M num_reg: 8 lose RAM: -1M gran_size: 4M chunk_size: 32M num_reg: 8 lose RAM: 3M gran_size: 4M chunk_size: 64M num_reg: 7 lose RAM: 3M gran_size: 4M chunk_size: 128M num_reg: 6 lose RAM: 3M gran_size: 4M chunk_size: 256M num_reg: 5 lose RAM: 3M gran_size: 4M chunk_size: 512M num_reg: 4 lose RAM: 3M gran_size: 4M chunk_size: 1024M num_reg: 3 lose RAM: 3M gran_size: 4M chunk_size: 2048M num_reg: 2 lose RAM: 3M gran_size: 4M chunk_size: 4096M num_reg: 8 lose RAM: 7M gran_size: 8M chunk_size: 8M num_reg: 8 lose RAM: 7M gran_size: 8M chunk_size: 16M num_reg: 8 lose RAM: 7M gran_size: 8M chunk_size: 32M num_reg: 8 lose RAM: 7M gran_size: 8M chunk_size: 64M num_reg: 7 lose RAM: 7M gran_size: 8M chunk_size: 128M num_reg: 6 lose RAM: 7M gran_size: 8M chunk_size: 256M num_reg: 5 lose RAM: 7M gran_size: 8M chunk_size: 512M num_reg: 4 lose RAM: 7M gran_size: 8M chunk_size: 1024M num_reg: 3 lose RAM: 7M gran_size: 8M chunk_size: 2048M num_reg: 2 lose RAM: 7M gran_size: 8M chunk_size: 4096M num_reg: 8 lose RAM: 7M gran_size: 16M chunk_size: 16M num_reg: 7 lose RAM: 15M gran_size: 16M chunk_size: 32M num_reg: 7 lose RAM: 15M gran_size: 16M chunk_size: 64M num_reg: 7 lose RAM: 15M gran_size: 16M chunk_size: 128M num_reg: 6 lose RAM: 15M gran_size: 16M chunk_size: 256M num_reg: 5 lose RAM: 15M gran_size: 16M chunk_size: 512M num_reg: 4 lose RAM: 15M gran_size: 16M chunk_size: 1024M num_reg: 3 lose RAM: 15M gran_size: 16M chunk_size: 2048M num_reg: 2 lose RAM: 15M gran_size: 16M chunk_size: 4096M num_reg: 7 lose RAM: 15M gran_size: 32M chunk_size: 32M num_reg: 6 lose RAM: 31M gran_size: 32M chunk_size: 64M num_reg: 6 lose RAM: 31M gran_size: 32M chunk_size: 128M num_reg: 6 lose RAM: 31M gran_size: 32M chunk_size: 256M num_reg: 5 lose RAM: 31M gran_size: 32M chunk_size: 512M num_reg: 4 lose RAM: 31M gran_size: 32M chunk_size: 1024M num_reg: 3 lose RAM: 31M gran_size: 32M chunk_size: 2048M num_reg: 2 lose RAM: 31M gran_size: 32M chunk_size: 4096M num_reg: 6 lose RAM: 31M gran_size: 64M chunk_size: 64M num_reg: 5 lose RAM: 63M gran_size: 64M chunk_size: 128M num_reg: 5 lose RAM: 63M gran_size: 64M chunk_size: 256M num_reg: 5 lose RAM: 63M gran_size: 64M chunk_size: 512M num_reg: 4 lose RAM: 63M gran_size: 64M chunk_size: 1024M num_reg: 3 lose RAM: 63M gran_size: 64M chunk_size: 2048M num_reg: 2 lose RAM: 63M gran_size: 64M chunk_size: 4096M num_reg: 5 lose RAM: 63M gran_size: 128M chunk_size: 128M num_reg: 4 lose RAM: 127M gran_size: 128M chunk_size: 256M num_reg: 4 lose RAM: 127M gran_size: 128M chunk_size: 512M num_reg: 4 lose RAM: 127M gran_size: 128M chunk_size: 1024M num_reg: 3 lose RAM: 127M gran_size: 128M chunk_size: 2048M num_reg: 2 lose RAM: 127M gran_size: 128M chunk_size: 4096M num_reg: 4 lose RAM: 127M gran_size: 256M chunk_size: 256M num_reg: 3 lose RAM: 255M gran_size: 256M chunk_size: 512M num_reg: 3 lose RAM: 255M gran_size: 256M chunk_size: 1024M num_reg: 3 lose RAM: 255M gran_size: 256M chunk_size: 2048M num_reg: 2 lose RAM: 255M gran_size: 256M chunk_size: 4096M num_reg: 3 lose RAM: 255M gran_size: 512M chunk_size: 512M num_reg: 2 lose RAM: 511M gran_size: 512M chunk_size: 1024M num_reg: 2 lose RAM: 511M gran_size: 512M chunk_size: 2048M num_reg: 2 lose RAM: 511M gran_size: 512M chunk_size: 4096M num_reg: 2 lose RAM: 511M gran_size: 1024M chunk_size: 1024M num_reg: 1 lose RAM: 1023M gran_size: 1024M chunk_size: 2048M num_reg: 1 lose RAM: 1023M gran_size: 1024M chunk_size: 4096M num_reg: 1 lose RAM: 1023M gran_size: 2048M chunk_size: 2048M num_reg: 0 lose RAM: 2047M gran_size: 2048M chunk_size: 4096M num_reg: 0 lose RAM: 2047M Found optimal setting for mtrr clean up gran_size: 1M chunk_size: 64M num_reg: 7 lose RAM: 0M range0: 0000000000000000 - 000000007c000000 Setting variable MTRR 0, base: 0MB, range: 1024MB, type WB Setting variable MTRR 1, base: 1024MB, range: 512MB, type WB Setting variable MTRR 2, base: 1536MB, range: 256MB, type WB Setting variable MTRR 3, base: 1792MB, range: 128MB, type WB Setting variable MTRR 4, base: 1920MB, range: 64MB, type WB range: 000000007c000000 - 0000000080000000 Setting variable MTRR 5, base: 1984MB, range: 64MB, type WB hole: 000000007ff00000 - 0000000080000000 Setting variable MTRR 6, base: 2047MB, range: 1MB, type UC x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 After WB checking MTRR MAP PFN: 0000000000000000 - 0000000000080000 After UC checking MTRR MAP PFN: 0000000000000000 - 000000000007ff00 After sorting MTRR MAP PFN: 0000000000000000 - 000000000007ff00 init_memory_mapping 0000000000 - 007fe00000 page 2M 007fe00000 - 007fe80000 page 4k kernel direct mapping tables up to 7fe80000 @ 8000-c000 last_map_addr: 7fe80000 end: 7fe80000 DMI 2.4 present. Xorg.0.log: (II) Loading sub module "int10" (II) LoadModule: "int10" (II) Reloading /usr/lib/xorg/modules//libint10.so (II) VESA(0): initializing int10 (II) VESA(0): Primary V_BIOS segment is: 0xc000 (II) VESA(0): VESA BIOS detected (II) VESA(0): VESA VBE Version 3.0 (II) VESA(0): VESA VBE Total Mem: 14336 kB (II) VESA(0): VESA VBE OEM: NVIDIA (II) VESA(0): VESA VBE OEM Software Rev: 96.134 (II) VESA(0): VESA VBE OEM Vendor: NVIDIA Corporation (II) VESA(0): VESA VBE OEM Product: G86 Board - dawson0 (II) VESA(0): VESA VBE OEM Product Rev: Chip Rev (II) VESA(0): Splitting WC range: base: 0xfb000000, size: 0xe00000 (II) VESA(0): Splitting WC range: base: 0xfb800000, size: 0x600000 (==) VESA(0): Write-combining range (0xfbc00000,0x200000) (WW) VESA(0): Failed to set up write-combining range (0xfb800000,0x600000) (WW) VESA(0): Failed to set up write-combining range (0xfb000000,0xe00000) (II) VESA(0): virtual address = 0x7f3ccaf43000, physical address = 0xfb000000, size = 14680064 Just like last time, this lack of mtrr is reflected in dmesg: mtrr: no more MTRRs available mtrr: no more MTRRs available $ cat /proc/mtrr reg00: base=0x00000000 ( 0MB), size=1024MB: write-back, count=1 reg01: base=0x40000000 (1024MB), size= 512MB: write-back, count=1 reg02: base=0x60000000 (1536MB), size= 256MB: write-back, count=1 reg03: base=0x70000000 (1792MB), size= 128MB: write-back, count=1 reg04: base=0x78000000 (1920MB), size= 64MB: write-back, count=1 reg05: base=0x7c000000 (1984MB), size= 64MB: write-back, count=1 reg06: base=0x7ff00000 (2047MB), size= 1MB: uncachable, count=1 reg07: base=0xfbc00000 (4028MB), size= 2MB: write-combining, count=1 The problem is still there, I hope the output is useful. I can test experimental patches if necessary. Helge Hafting -- 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/