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Re: [Xen-devel] running Windows (albeit slowly)

To: "Eric S. Johansson" <esj@xxxxxxxxxx>
Subject: Re: [Xen-devel] running Windows (albeit slowly)
From: Mark Williamson <maw48@xxxxxxxxxxxxxxxx>
Date: Wed, 24 Nov 2004 13:09:47 +0000 (GMT)
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Under the opinion that there is no crime if optimization fails on incorrect code, would it not be appropriate to do all the things necessary to run Windows unmodified albeit poorly slash slowly?

It's not just that the modifications improve performance, guests actually need to be modified to work on Xen at all.

When Intel's VT extensions come out, supporting unmodified guests will be rather easier.

If you want a free means of running a Windows virtual machine your best bet right now is probably QEmu. Faster than Bochs although with less complete machine emulation. The author intends to enhance it further to eventually get VMWare levels of performance (although that's a non-trivial undertaking!).

assuming of course that people want to run Windows. The only reason I do is because of speech recognition requirements but that's a very different conversation.

Yeah, speech recognition on Linux (and others) is a bit of a pain. There are a few open source products (e.g. sphinx, perlbox) but I doubt they're usuable for dictation, if that's what you want. Out of interest, does Wine have any success at running NaturallySpeaking / ViaVoice / whatever?


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