Date: Wed, 24 Nov 2004 22:47:27 -0500 From: David Schultz <das@FreeBSD.ORG> To: Mike Jeays <Mike.Jeays@rogers.com> Cc: Alec Berryman <alec@thened.net> Subject: Re: VMWare Message-ID: <20041125034727.GA46124@VARK.MIT.EDU> In-Reply-To: <1101349182.1100.46.camel@chaucer> References: <1101342070.1100.39.camel@chaucer> <20041125011711.GA1907@thened.net> <57d710000411241726b3534ee@mail.gmail.com> <20041125020027.GB1907@thened.net> <1101349182.1100.46.camel@chaucer>
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On Wed, Nov 24, 2004, Mike Jeays wrote: > On Wed, 2004-11-24 at 21:00, Alec Berryman wrote: > > begin quotation of pete wright on 2004-11-24 17:26:37 -0800: > > > > > i've had no problems running multiple copies of FreeBSD (4.x and > > > 5.x) as well as openBSD as a vmware guest. > > > > Are you talking about VMWare Workstation or the GSX/ESX server? > > > > The part of the presentation that seemed most interesting to me was the > ESX server. This seems a lot like the early IBM VM operating system, > which completely virtualises the hardware. I thought this was really > clever when I first heard of it many years ago. I have often wondered > what the requirements on the instruction set for a CPU are to make this > possible. Actually, x86 isn't fully virtualizable. My understanding is that VMWare uses some pretty bizarre code rewriting tricks to make the emulation work completely correctly. A friend of mine who knows x86 way better than I do claims the necessary hacks are not too complicated, but Ed Wang says they're trade secrets of VMWare and won't talk about them, so who knows?
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