From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750731AbWG0TlW (ORCPT ); Thu, 27 Jul 2006 15:41:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751960AbWG0TlV (ORCPT ); Thu, 27 Jul 2006 15:41:21 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:24865 "EHLO pd3mo3so.prod.shaw.ca") by vger.kernel.org with ESMTP id S1750731AbWG0TlV (ORCPT ); Thu, 27 Jul 2006 15:41:21 -0400 Date: Thu, 27 Jul 2006 13:41:19 -0600 From: Robert Hancock Subject: Re: BIOS detects 4 GB RAM, but kernel does not In-reply-to: To: linux-kernel Message-id: <44C916DF.6080200@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: <1153931278.034068.54630@h48g2000cwc.googlegroups.com> <1153933737.200164.160870@m73g2000cwd.googlegroups.com> <1154007393.940693.259680@i42g2000cwa.googlegroups.com> User-Agent: Thunderbird 1.5.0.4 (Windows/20060516) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jean-David Beyer wrote: > You need to compile with > > # CONFIG_NOHIGHMEM is not set > # CONFIG_HIGHMEM4G is not set > CONFIG_HIGHMEM64G=y > CONFIG_HIGHMEM=y > CONFIG_HIGHPTE=y > CONFIG_X86_PAE=y > CONFIG_HIGHIO=y > CONFIG_X86_4G=y > CONFIG_X86_SWITCH_PAGETABLES=y > CONFIG_X86_4G_VM_LAYOUT=y > CONFIG_X86_UACCESS_INDIRECT=y > CONFIG_X86_HIGH_ENTRY=y > > in your .config (for *86 machines) to get 4G of user and 4G of system space. > I so or know how much sense this would make for a 4G of RAM machine. I never > tried it when this machine had only 4G, but that is what is required to get > all 4G in a single user process now that I have 8G. Those options are not applicable on an x86-64 kernel. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/