Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932234AbVJ0Uoj (ORCPT ); Thu, 27 Oct 2005 16:44:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932235AbVJ0Uoj (ORCPT ); Thu, 27 Oct 2005 16:44:39 -0400 Received: from ams-iport-1.cisco.com ([144.254.224.140]:50091 "EHLO ams-iport-1.cisco.com") by vger.kernel.org with ESMTP id S932234AbVJ0Uoi (ORCPT ); Thu, 27 Oct 2005 16:44:38 -0400 To: Marcel Holtmann Cc: linux-kernel@vger.kernel.org Subject: Re: 4GB memory and Intel Dual-Core system X-Message-Flag: Warning: May contain useful information References: <1130445194.5416.3.camel@blade> From: Roland Dreier Date: Thu, 27 Oct 2005 13:44:19 -0700 In-Reply-To: <1130445194.5416.3.camel@blade> (Marcel Holtmann's message of "Thu, 27 Oct 2005 22:33:14 +0200") Message-ID: <52mzkuwuzg.fsf@cisco.com> User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.4.17 (Jumbo Shrimp, linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 X-OriginalArrivalTime: 27 Oct 2005 20:44:20.0363 (UTC) FILETIME=[34B10DB0:01C5DB37] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 806 Lines: 18 Marcel> The BIOS and dmidecode tells me that I have 4 GB of RAM Marcel> installed and I don't have any idea where to look for Marcel> details. What information do you need to analyze this? Look at the e820 dump in your kernel bootlog. I'll bet you'll see a big chunk of reserved address space. Do you have any PCI devices like video cards that use a lot of PCI address space? I don't know if EM64T systems (or whatever the right term is) have a way of remapping some RAM above 4 GB so that you can use all your memory in a case like this. - R. - 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/