From owner-freebsd-arch Sun Oct 13 11:16:54 2002 Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 51BCB37B401 for ; Sun, 13 Oct 2002 11:16:53 -0700 (PDT) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id 193E743E88 for ; Sun, 13 Oct 2002 11:16:52 -0700 (PDT) (envelope-from ticso@cicely8.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [IPv6:3ffe:400:8d0:301:200:92ff:fe9b:20e7]) by srv1.cosmo-project.de (8.12.5/8.12.5) with ESMTP id g9DIGd6K009230 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Sun, 13 Oct 2002 20:16:42 +0200 (CEST) (envelope-from ticso@cicely8.cicely.de) Received: from cicely8.cicely.de (cicely8.cicely.de [10.1.1.10]) by cicely5.cicely.de (8.12.6/8.12.6) with ESMTP id g9DIGbgK099335 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Sun, 13 Oct 2002 20:16:38 +0200 (CEST) (envelope-from ticso@cicely8.cicely.de) Received: from cicely8.cicely.de (localhost [127.0.0.1]) by cicely8.cicely.de (8.12.6/8.12.6) with ESMTP id g9DIGalv035246; Sun, 13 Oct 2002 20:16:37 +0200 (CEST) (envelope-from ticso@cicely8.cicely.de) Received: (from ticso@localhost) by cicely8.cicely.de (8.12.6/8.12.6/Submit) id g9DIGZQo035245; Sun, 13 Oct 2002 20:16:35 +0200 (CEST) Date: Sun, 13 Oct 2002 20:16:34 +0200 From: Bernd Walter To: "M. Warner Losh" Cc: tlambert2@mindspring.com, ticso@cicely.de, hch@infradead.org, wes@softweyr.com, dillon@apollo.backplane.com, vova@sw.ru, nate@root.org, arch@FreeBSD.org Subject: Re: Database indexes and ram Message-ID: <20021013181633.GB34517@cicely8.cicely.de> Reply-To: ticso@cicely.de References: <3DA954CF.98B0891A@mindspring.com> <20021013.060851.113437955.imp@bsdimp.com> <3DA9B4A8.194A02FC@mindspring.com> <20021013.120847.31902907.imp@bsdimp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20021013.120847.31902907.imp@bsdimp.com> X-Operating-System: FreeBSD cicely8.cicely.de 5.0-CURRENT i386 User-Agent: Mutt/1.5.1i Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Oct 13, 2002 at 12:08:47PM -0600, M. Warner Losh wrote: > I think that's all irrelevant. Cards with 32bits can't go about 4GB. > It is a far more fundamental problem. Even 32bit cards in 64bit slots > can't do this. 64bit cards could DMA into anywhere in the first > 64bits of RAM, of course. Of course they can do. It's just a matter if the card and the board support 2 address cycles. Or if the board can map the pci reachable space - as alphas can do. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message