Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265157AbUFAT5h (ORCPT ); Tue, 1 Jun 2004 15:57:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265195AbUFAT5h (ORCPT ); Tue, 1 Jun 2004 15:57:37 -0400 Received: from bgp01360964bgs.sandia01.nm.comcast.net ([68.35.68.128]:36494 "EHLO orion.dwf.com") by vger.kernel.org with ESMTP id S265157AbUFAT5I (ORCPT ); Tue, 1 Jun 2004 15:57:08 -0400 Message-Id: <200406011956.i51JuYkD019999@orion.dwf.com> X-Mailer: exmh version 2.6.3 04/04/2003 with nmh-1.0.4 To: reg@dwf.com cc: linux-kernel@vger.kernel.org, reg@orion.dwf.com, linux@horizon.com Subject: Re: Intel 875 Motherboard cant use 4GB of Memory. In-Reply-To: Message from reg@dwf.com of "Tue, 01 Jun 2004 01:32:17 MDT." <200406010732.i517WHOm009984@orion.dwf.com> Mime-Version: 1.0 Date: Tue, 01 Jun 2004 13:56:34 -0600 From: reg@dwf.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3680 Lines: 96 > That could be PCI devices. Some (particularly high-end video cards) > take up a lot of address space, which comes straight out of the available > 4 GB physical address space. > > Check /proc/iomem. > OK, that leaves me more confused, and (to me) it still looks like a BIOS problem rather than a greedy device. Here is the /proc/iomem with some decimal annotations: (as noted, there is 4x1GB of memory installed) --- 00000000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000ccfff : Video ROM 000f0000-000fffff : System ROM 00100000-ae62ffff : System RAM 1048576 - 2925723647 00100000-002a2fff : Kernel code 002a3000-003542ff : Kernel data ae630000-ae64180f : ACPI Non-volatile Storage ae641810-ae72ffff : System RAM ae730000-ae73ffff : ACPI Tables ae740000-ae7effff : ACPI Non-volatile Storage ae7f0000-ae7fffff : reserved ae800000-ae8003ff : 0000:00:1f.1 2927624192 - 2927625215 aeb00000-eeafffff : PCI Bus #01 2930769920 - 4004511743 << c0000000-cfffffff : 0000:01:00.1 3221225472 - 3489660927 d0000000-dfffffff : 0000:01:00.0 3489660928 - 3758096383 f0000000-f7ffffff : 0000:00:00.0 4026531840 - 4160749567 fecf0000-fecf0fff : reserved fed20000-fed9ffff : reserved ff800000-ff8fffff : PCI Bus #01 4286578688 - 4287627263 ff8e0000-ff8effff : 0000:01:00.1 ff8f0000-ff8fffff : 0000:01:00.0 ff900000-ff9fffff : PCI Bus #02 ff9e0000-ff9fffff : 0000:02:01.0 ff9e0000-ff9fffff : e1000 ffaffc00-ffafffff : 0000:00:1d.7 ffaffc00-ffafffff : ehci_hcd --- and here is the lspci 00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02) 00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02) 00:03.0 PCI bridge: Intel Corp. 82875P Processor to PCI to CSA Bridge (rev 02) 00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 (rev 02) 00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #2 (rev 02) 00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02) 00:1d.3 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #4 (rev 02) 00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB/ER Hub interface to PCI Bridge (rev c2) 00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02) 00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) Ultra ATA 100 Storage Controller (rev 02) 00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) Serial ATA 150 Storage Controller (rev 02) 00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02) 01:00.0 VGA compatible controller: ATI Technologies Inc RV350 AR [Radeon 9600] 01:00.1 Display controller: ATI Technologies Inc RV350 AR [Radeon 9600] (Secondary) 02:01.0 Ethernet controller: Intel Corp. 82547EI Gigabit Ethernet Controller (LOM) 03:01.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 0a) 03:01.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 0a) [ --- This still isnt making much sense to me, so if somone can explain why I can only see a little over 2/3 of the installed memory, I would appreciate it. And of course, the original question, any workarround? --- Reg.Clemens reg@dwf.com - 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/