From owner-freebsd-hackers Thu Jan 14 15:24:53 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA00738 for freebsd-hackers-outgoing; Thu, 14 Jan 1999 15:24:53 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from lestat.nas.nasa.gov (lestat.nas.nasa.gov [129.99.50.29]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA00731; Thu, 14 Jan 1999 15:24:51 -0800 (PST) (envelope-from thorpej@lestat.nas.nasa.gov) Received: from lestat (localhost [127.0.0.1]) by lestat.nas.nasa.gov (8.8.8/8.6.12) with ESMTP id PAA07241; Thu, 14 Jan 1999 15:23:20 -0800 (PST) Message-Id: <199901142323.PAA07241@lestat.nas.nasa.gov> To: "John S. Dyson" Cc: dillon@apollo.backplane.com (Matthew Dillon), root@dyson.iquest.net, dg@root.com, jkh@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: Review and report of linux kernel VM Reply-To: Jason Thorpe From: Jason Thorpe Date: Thu, 14 Jan 1999 15:23:20 -0800 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 14 Jan 1999 17:57:57 -0500 (EST) "John S. Dyson" wrote: > implementations, but also adds overhead. It would be "nice" to be able > for the upper level VM code to simply modify page table entries sometimes, > wouldn't it? One thing that I did in the FreeBSD code was to minimize the It would? What if your architecture doesn't use page tables, in the traditional sense? (There are at least a couple modern RISC architectures for which this is the case...) Jason R. Thorpe thorpej@nas.nasa.gov NASA Ames Research Center Home: +1 408 866 1912 NAS: M/S 258-5 Work: +1 650 604 0935 Moffett Field, CA 94035 Pager: +1 650 940 5942 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message