From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 7 May 2002 19:14:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 7 May 2002 19:14:22 -0400 Received: from lightning.swansea.linux.org.uk ([194.168.151.1]:48904 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Tue, 7 May 2002 19:14:22 -0400 Subject: Re: x86 question: Can a process have > 3GB memory? To: ctwhite@us.ibm.com (Clifford White) Date: Wed, 8 May 2002 00:33:14 +0100 (BST) Cc: linux-kernel@vger.kernel.org In-Reply-To: from "Clifford White" at May 07, 2002 04:03:09 PM X-Mailer: ELM [version 2.5 PL6] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > We'd like to go > 3GB of memory per process. > Is this possible on a 32-bit machine? I have been reading the various Yes and no... > Any pointers would be appreciated. The Intel ESMA (Extended Server Memory > Arch) page states that it's possible, but.....how? Remember DOS and EMM memory expansion. Basically that is what you come down to. Allocate multiple large shared memory segments, attach the one you need each time and implement software segment swapping. That should have you diving for an AMD hammer or IA64 box as soon as they come out 8)