Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S971593AbXEIBVA (ORCPT ); Tue, 8 May 2007 21:21:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S968573AbXEIBUq (ORCPT ); Tue, 8 May 2007 21:20:46 -0400 Received: from holomorphy.com ([66.93.40.71]:34987 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752141AbXEIBUp (ORCPT ); Tue, 8 May 2007 21:20:45 -0400 Date: Tue, 8 May 2007 18:21:24 -0700 From: William Lee Irwin III To: Minchen Zhao Cc: linux-kernel@vger.kernel.org Subject: Re: increase Linux kernel address space 3.5 G memory on Redhat Enterprise version 4 Message-ID: <20070509012124.GJ19966@holomorphy.com> References: <464113ED.1010104@lizotech-inc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <464113ED.1010104@lizotech-inc.com> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 925 Lines: 23 On Tue, May 08, 2007 at 05:21:01PM -0700, Minchen Zhao wrote: > 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 instrcutions. 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? > thanks in advance. > P.S. Please cc to me (mzhao@lizotech-inc.com) to reply. Use the hugemem kernel instead of the smp kernel. You will get > 3.5GB user address space. -- wli - 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/