From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756800AbXEIOeA (ORCPT ); Wed, 9 May 2007 10:34:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753957AbXEIOdx (ORCPT ); Wed, 9 May 2007 10:33:53 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:55436 "EHLO pd2mo1so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1749667AbXEIOdx (ORCPT ); Wed, 9 May 2007 10:33:53 -0400 Date: Wed, 09 May 2007 08:32:35 -0600 From: Robert Hancock Subject: Re: increase Linux kernel address space 3.5 G memory on Redhat Enterprise In-reply-to: To: linux@horizon.com Cc: linux-kernel@vger.kernel.org, mzhao@lizotech-inc.com Message-id: <4641DB83.3070108@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org linux@horizon.com wrote: >> Hi: >> I am running Redhat Linux Enterprise version 4 update 4 on a dual-core >> 4G memory machine. There are many references on the web talking about >> increasing default user address space to 3.5 G however lacking specific >> instructions. My questions: >> >> 1. What is the specific steps to be done for the kernel to support 3.5 G >> address space? >> 2. Do I need to re-compile kernel to make this happen? If so, any >> specific instruction? If this is a dual-core box then quite likely it also supports 64-bit, that would be a much safer option than messing with the kernel/user split and reducing the kernel memory available so much. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/