From owner-freebsd-stable Fri Jul 20 21: 1:26 2001 Delivered-To: freebsd-stable@freebsd.org Received: from cs.utep.edu (mail.cs.utep.edu [129.108.5.3]) by hub.freebsd.org (Postfix) with ESMTP id 000E537B401; Fri, 20 Jul 2001 21:01:23 -0700 (PDT) (envelope-from janb@cs.utep.edu) Received: from gecko (gecko [129.108.5.51]) by cs.utep.edu (8.11.3/8.11.3) with ESMTP id f6L41MR11212; Fri, 20 Jul 2001 22:01:22 -0600 (MDT) Date: Fri, 20 Jul 2001 22:01:23 -0600 (MDT) From: X-Sender: To: Mike Smith Cc: Subject: Re: FreeBSD 4.3 and 6G RAM In-Reply-To: <200107210128.f6L1SQd02267@mass.dis.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I understand. Thank you. JAn > It's not trivial to "disable", unfortunately. > > The core of the problem is that the 36-bit physical addresses have to be > stored in 64-bit variables, which are *much* slower than the 32-bit > variables we currently use. You can't adjust this at runtime, it has to > be a compile-time option. > > There are other complications as well, which all add up to making this a > serious amount of work to deal with, and more to the point, one that > nobody has actually undertaken yet. > > -- > ... every activity meets with opposition, everyone who acts has his > rivals and unfortunately opponents also. But not because people want > to be opponents, rather because the tasks and relationships force > people to take different points of view. [Dr. Fritz Todt] > V I C T O R Y N O T V E N G E A N C E > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message