From owner-freebsd-questions@FreeBSD.ORG Wed Feb 17 23:59:51 2010 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 48545106566B for ; Wed, 17 Feb 2010 23:59:51 +0000 (UTC) (envelope-from yuri@rawbw.com) Received: from shell0.rawbw.com (shell0.rawbw.com [198.144.192.45]) by mx1.freebsd.org (Postfix) with ESMTP id 33C7E8FC1B for ; Wed, 17 Feb 2010 23:59:51 +0000 (UTC) Received: from eagle.syrec.org (stunnel@localhost [127.0.0.1]) (authenticated bits=0) by shell0.rawbw.com (8.14.4/8.14.4) with ESMTP id o1HNxnuX054458; Wed, 17 Feb 2010 15:59:50 -0800 (PST) (envelope-from yuri@rawbw.com) Message-ID: <4B7C82F5.7030207@rawbw.com> Date: Wed, 17 Feb 2010 15:59:49 -0800 From: Yuri User-Agent: Thunderbird 2.0.0.23 (X11/20100206) MIME-Version: 1.0 To: Erik Trulsson References: <4B7C493B.1060503@rawbw.com> <20100217150217.393724ed.wmoran@potentialtech.com> <20100217202327.GA23365@owl.midgard.homeip.net> In-Reply-To: <20100217202327.GA23365@owl.midgard.homeip.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Bill Moran , freebsd-questions@freebsd.org Subject: Re: Is it possible to see memory over 3GB on 32-bit FreeBSD? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: yuri@rawbw.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Feb 2010 23:59:51 -0000 Erik Trulsson wrote: > It very much depends on what hardware you have in the system. Just > about every expansion card or I/O device will reserve some of the > address space for its own use. Some devices will need a lot of space - > a graphics card with 256MB of RAM on it will use (at least) 256MB of > the address space for example. > This doesn't seem like a good idea that video memory is always mapped to system memory. What if one day graphics card gets 4GB RAM? Then we won't even be able to have 32-bit OS working with such card and in 64-bit OS 4GB of memory would be grossly wasted. Yuri