Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753321AbXINJUZ (ORCPT ); Fri, 14 Sep 2007 05:20:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751926AbXINJUM (ORCPT ); Fri, 14 Sep 2007 05:20:12 -0400 Received: from mail.dgt.com.pl ([195.117.141.2]:39196 "EHLO dgt.com.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751804AbXINJUK (ORCPT ); Fri, 14 Sep 2007 05:20:10 -0400 X-Greylist: delayed 1780 seconds by postgrey-1.27 at vger.kernel.org; Fri, 14 Sep 2007 05:20:10 EDT DGT-Virus-Scanned: amavisd-new at dgt.com.pl Message-ID: <46EA4B50.7040904@dgt.com.pl> Date: Fri, 14 Sep 2007 10:50:24 +0200 From: Wojciech Kromer User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); pl-PL; rv:1.8.1.6) Gecko/20070802 SeaMonkey/1.1.4 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Intel-Quad on GA-P35-S3 motherboard with 4*2GB Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1757 Lines: 56 I can't see whole 8GB of ram. With F2 BIOS release i can only work with kernel param mem=4G. After updating to F4 BIOS release I can work with mem=8G, but I see this: # free -m total used free shared buffers cached Mem: 6473 474 5999 0 29 278 Without mem=8G kernel starts to slow down and hangs while starting filesystem. There is no message. My whole memory was tested with memtest. Full test took about 48hour. Is it wrong? I have: Intel(R) Core(TM)2 Quad CPU @ 2.40GHz There are 4 * 2GB / 667MHz DIMMs. # cat /proc/iomem |grep RAM 00000000-0009f7ff : System RAM 00100000-9fedffff : System RAM 100000000-25fffffff : System RAM # dmesg|grep BIOS-e820 BIOS-e820: 0000000000000000 - 000000000009f800 (usable) BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000009fee0000 (usable) BIOS-e820: 000000009fee0000 - 000000009fee3000 (ACPI NVS) BIOS-e820: 000000009fee3000 - 000000009fef0000 (ACPI data) BIOS-e820: 000000009fef0000 - 000000009ff00000 (reserved) BIOS-e820: 00000000c0000000 - 00000000c4000000 (reserved) BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) BIOS-e820: 0000000100000000 - 0000000260000000 (usable) I can see that higer memory range was remmaped, by why accesing something greater than 100000000 is problematic? Do I need to change something i kernel configuration? - 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/