From owner-freebsd-hackers Sat Apr 19 01:53:41 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id BAA03295 for hackers-outgoing; Sat, 19 Apr 1997 01:53:41 -0700 (PDT) Received: from mail.crl.com (mail.crl.com [165.113.1.22]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id BAA03266 for ; Sat, 19 Apr 1997 01:53:16 -0700 (PDT) Received: from sax.sax.de by mail.crl.com with SMTP id AA24612 (5.65c/IDA-1.5 for ); Sat, 19 Apr 1997 01:51:00 -0700 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id KAA18125; Sat, 19 Apr 1997 10:50:19 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id KAA11020; Sat, 19 Apr 1997 10:23:01 +0200 (MET DST) Message-Id: <19970419102301.FO34910@uriah.heep.sax.de> Date: Sat, 19 Apr 1997 10:23:01 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@FreeBSD.ORG Cc: krygier@kph.uni-mainz.de (Klaus Werner Krygier), toor@dyson.iquest.net (John S. Dyson) Subject: Re: special memory device References: <19970416004851.LL04161@uriah.heep.sax.de> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-Pgp-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: ; from Klaus Werner Krygier on Apr 19, 1997 00:21:04 +0200 Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As Klaus Werner Krygier wrote: > This means that the notification about the page fault > seems to be done by calling the driver's mmap routine. Here I can > reprogram the interface card. The validation of the now visible window > is done automatically. The only problem that remains is, how to invalidate > the pages for the old window so that a page fault will be generated > again if this window is accessed later. Ask John. :) I think you gotta call some *unmap() function, but i'm not confident with the API, and John never got around to actually write something like a man page for the VM system (hint, hint :). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)