From owner-freebsd-hackers Thu Dec 13 17:19:48 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from rover.village.org (rover.bsdimp.com [204.144.255.66]) by hub.freebsd.org (Postfix) with ESMTP id 289DA37B405; Thu, 13 Dec 2001 17:19:44 -0800 (PST) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.11.3/8.11.3) with ESMTP id fBE1Jga93584; Thu, 13 Dec 2001 18:19:43 -0700 (MST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost [127.0.0.1]) by harmony.village.org (8.11.6/8.11.6) with ESMTP id fBE1JgM49561; Thu, 13 Dec 2001 18:19:42 -0700 (MST) (envelope-from imp@harmony.village.org) Message-Id: <200112140119.fBE1JgM49561@harmony.village.org> To: Steve Price Subject: Re: MMU-less FreeBSD Cc: hackers@FreeBSD.ORG In-reply-to: Your message of "Thu, 13 Dec 2001 17:43:47 CST." <20011213174347.V597@bsd.havk.org> References: <20011213174347.V597@bsd.havk.org> Date: Thu, 13 Dec 2001 18:19:42 -0700 From: Warner Losh Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message <20011213174347.V597@bsd.havk.org> Steve Price writes: : As a rough order of magnitude how hard would it be to port : FreeBSD to an architecture (Motorola Coldfire) that doesn't : have an MMU? I see some words on their site that the NetBSD : folks might be working on some archs that require this. Hard. Lots of stuff relies on mmap, which basiclly requires an MMU or other tricks. The other tricks can be somewhat expensive... Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message