From owner-freebsd-hackers Thu Apr 23 05:57:53 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id FAA25671 for freebsd-hackers-outgoing; Thu, 23 Apr 1998 05:57:53 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from phoenix.its.rpi.edu (dec@phoenix.its.rpi.edu [128.113.161.45]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id FAA25665 for ; Thu, 23 Apr 1998 05:57:47 -0700 (PDT) (envelope-from dec@phoenix.its.rpi.edu) Received: from localhost (dec@localhost) by phoenix.its.rpi.edu (8.8.8/8.8.7) with SMTP id IAA09733 for ; Thu, 23 Apr 1998 08:57:46 -0400 (EDT) (envelope-from dec@phoenix.its.rpi.edu) Date: Thu, 23 Apr 1998 08:57:45 -0400 (EDT) From: "David E. Cross" To: freebsd-hackers@FreeBSD.ORG Subject: Protected mode instructions which reduce to noop. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Awhile ago it was discussed about implimenting a VM type architecture on intel, and it was agreed that this would be very difficult because intel had decided that instead of throwing an illegal instruction exception for protected mode instructions that were not run as supervisor, it would simply reduce the instriction to NOOP. What are these instructions. -- David Cross To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message