Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932181AbWHHKBj (ORCPT ); Tue, 8 Aug 2006 06:01:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932432AbWHHKBj (ORCPT ); Tue, 8 Aug 2006 06:01:39 -0400 Received: from kunzite.stewarts.org.uk ([80.68.93.148]:16141 "EHLO kunzite.stewarts.org.uk") by vger.kernel.org with ESMTP id S932181AbWHHKBj (ORCPT ); Tue, 8 Aug 2006 06:01:39 -0400 Date: Tue, 8 Aug 2006 11:01:37 +0100 To: Mikael Pettersson Cc: linux-kernel@vger.kernel.org Subject: Re: Only 3.2G ram out of 4G seen in an i386 box Message-ID: <20060808100137.GA5233@stewarts.org.uk> References: <200608080913.k789D0fC019037@harpo.it.uu.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200608080913.k789D0fC019037@harpo.it.uu.se> User-Agent: Mutt/1.5.9i From: Thomas Stewart Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3943 Lines: 62 On Tue, Aug 08, 2006 at 11:13:00AM +0200, Mikael Pettersson wrote: > Most likely the BIOS is reserving large parts of the [0,4GB[ range for > PCI devices and some for itself. Please post the E820 memory map the > kernel prints near the start of the boot sequence on your machine. Linux version 2.6.16-2-686 (Debian 2.6.16-17) (waldi@debian.org) (gcc version 4.6BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 00000000cfe86c00 (usable) BIOS-e820: 00000000cfe86c00 - 00000000cfe88c00 (ACPI NVS) BIOS-e820: 00000000cfe88c00 - 00000000cfe8ac00 (ACPI data) BIOS-e820: 00000000cfe8ac00 - 00000000d0000000 (reserved) BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fed00400 (reserved) BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved) BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) 2174MB HIGHMEM available. 1152MB LOWMEM available. Linux version 2.6.18-rc3-git3-ts1 (root@coke) (gcc version 4.0.4 20060507 (prer6BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 00000000cfe86c00 (usable) BIOS-e820: 00000000cfe86c00 - 00000000cfe88c00 (ACPI NVS) BIOS-e820: 00000000cfe88c00 - 00000000cfe8ac00 (ACPI data) BIOS-e820: 00000000cfe8ac00 - 00000000d0000000 (reserved) BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fed00400 (reserved) BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved) BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) 2430MB HIGHMEM available. 896MB LOWMEM available. Linux version 2.6.18-rc2-mm1-ts1 (root@coke) (gcc version 4.0.4 20060507 (prere6BIOS-provided physical RAM map: sanitize start sanitize end copy_e820_map() start: 0000000000000000 size: 00000000000a0000 end: 000000000001copy_e820_map() type is E820_RAM copy_e820_map() start: 00000000000f0000 size: 0000000000010000 end: 000000000012copy_e820_map() start: 0000000000100000 size: 00000000cfd86c00 end: 00000000cfe1copy_e820_map() type is E820_RAM copy_e820_map() start: 00000000cfe86c00 size: 0000000000002000 end: 00000000cfe4copy_e820_map() start: 00000000cfe88c00 size: 0000000000002000 end: 00000000cfe3copy_e820_map() start: 00000000cfe8ac00 size: 0000000000175400 end: 00000000d002copy_e820_map() start: 00000000e0000000 size: 0000000010000000 end: 00000000f002copy_e820_map() start: 00000000fec00000 size: 0000000000100400 end: 00000000fed2copy_e820_map() start: 00000000fed20000 size: 0000000000080000 end: 00000000fed2copy_e820_map() start: 00000000fee00000 size: 0000000000100000 end: 00000000fef2copy_e820_map() start: 00000000ffb00000 size: 0000000000500000 end: 000000010002 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 00000000cfe86c00 (usable) BIOS-e820: 00000000cfe86c00 - 00000000cfe88c00 (ACPI NVS) BIOS-e820: 00000000cfe88c00 - 00000000cfe8ac00 (ACPI data) BIOS-e820: 00000000cfe8ac00 - 00000000d0000000 (reserved) BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fed00400 (reserved) BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved) BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) 2430MB HIGHMEM available. 896MB LOWMEM available. Regards -- Tom - 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/