From owner-freebsd-questions@FreeBSD.ORG Thu Aug 30 21:58:37 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8DC8416A420 for ; Thu, 30 Aug 2007 21:58:37 +0000 (UTC) (envelope-from speedtoys.racing@gmail.com) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.188]) by mx1.freebsd.org (Postfix) with ESMTP id 089FB13C46B for ; Thu, 30 Aug 2007 21:58:36 +0000 (UTC) (envelope-from speedtoys.racing@gmail.com) Received: by fk-out-0910.google.com with SMTP id b27so541274fka for ; Thu, 30 Aug 2007 14:58:35 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=kNIlMzWoqJBWpuQg4pG9+i3lvnOlUckWgs3FNjEdYNc9TBGepvUtUcHdH8dp92WrW2zbpy6J+F+uoqQzldMw713gLszoHbyxUkZZY+gL4cAyaZvikUzkb92jduoVbWfAaLcWQMpV2TLfs0xuO6LVswVY8iZM9oED58uHSYiz8E0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=DWoPTYyCmAC+Y91dNuEnPTKUOLMKcYvILOQsFtU0DYKuoxOxxv/DF3qZv7wFltwnym3vkiJPfTrupiiqQqG9h1UXfb5QLo55IefXvf4ftrfri735Q5tIOA8k6ZZw76J8hNck+p91jb2jt9jM3pwW3zEaZCpbrQ7MKx3iCwhzmug= Received: by 10.82.152.16 with SMTP id z16mr2058888bud.1188511115128; Thu, 30 Aug 2007 14:58:35 -0700 (PDT) Received: by 10.82.177.11 with HTTP; Thu, 30 Aug 2007 14:58:35 -0700 (PDT) Message-ID: Date: Thu, 30 Aug 2007 14:58:35 -0700 From: "Jeff Mohler" To: "User Bobby" In-Reply-To: <20070830172127.M11085@susanne.tomatoseed.org> MIME-Version: 1.0 References: <20070830172127.M11085@susanne.tomatoseed.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: 4gb address space limitation for i386 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Aug 2007 21:58:37 -0000 Youre pretty much going to require an AMD setup for that. On 8/30/07, User Bobby wrote: > > I have an IBM xSeries 350 4xPIII with 5.5gb of RAM, and see that only > about 3.5gb is being used under the i386 port. I've been looking through > the > archives to try and figure out what the root of the problem is and I amn't > quite sure I know which part of the situation is the real problem. > > Is it a limitation of the i386 port? That is to say, if there were a > specific PIII (i686?) port, would this problem be overcome? Or is it a > hardware limitation? Is it necessary to use a not-clean method to > access the extra address space (is this what PAE is?), and there's no > clean > way around it, regardless of the port? > > I was looking at building a PAE kernel, but was discouraged by the lack of > usb and certain SCSI support, both of which I'd really like to have (in > the case of SCSI, need to have). Is this lack of support because of an > inherent difficulty in the hardware, or could it be overcome in a > stable way with modification of the device driver code? > > My basic (and very hypothetical) question - if I had unlimited time and > knowledge (I have limited both), what direction would I take to get access > to all 5.5gb of RAM on this particular computer? > > Thank you, > Bob > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >