Date: Thu, 23 Apr 1998 10:20:43 +0000 (GMT) From: Alfred Perlstein <perlsta@fang.cs.sunyit.edu> To: "David E. Cross" <dec@phoenix.its.rpi.edu> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Protected mode instructions which reduce to noop. Message-ID: <Pine.BSF.3.95.980423101923.15642A-100000@fang.cs.sunyit.edu> In-Reply-To: <Pine.BSF.3.96.980423084228.9592A-100000@phoenix.its.rpi.edu>
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i'm seriously doubtful of this. i think intels throw instr fault exceptions when stuff like that is executed. -Alfred On Thu, 23 Apr 1998, David E. Cross wrote: > 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 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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