From owner-freebsd-hackers Tue Jun 2 11:42:59 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA18148 for freebsd-hackers-outgoing; Tue, 2 Jun 1998 11:42:59 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from swing.ca.sandia.gov (swing.ca.sandia.gov [146.246.246.5]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA18135 for ; Tue, 2 Jun 1998 11:42:52 -0700 (PDT) (envelope-from cc@swing.ca.sandia.gov) Received: from swing.ca.sandia.gov (localhost [127.0.0.1]) by swing.ca.sandia.gov (8.8.8/8.8.8) with ESMTP id GAA12205 for ; Tue, 2 Jun 1998 06:43:05 -0500 (CDT) (envelope-from cc@swing.ca.sandia.gov) Message-Id: <199806021143.GAA12205@swing.ca.sandia.gov> X-Mailer: exmh version 2.0.2 2/24/98 To: freebsd-hackers@FreeBSD.ORG Subject: VM Questions Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 02 Jun 1998 06:43:05 -0500 From: "Chris Csanady" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello, I am working on implementing a low level message passing protocol for FreeBSD, although I have a few questions. First, I was wondering if it is possible given a physical address, to copy data to it from a virtual address. Or is a virtual mapping necessary? The other question is how may I map user pages into the kernel? I've looked through vm_map.c, and it seems that support for this is lacking. To get around this for now, I am attempting to use almost exclusively physical address--although am now sure how it will work out. Thanks, Chris Csanady To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message