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Re: Xen?

From: Ian Duggan
Subject: Re: Xen?
Date: Wed, 29 Oct 2003 11:32:49 -0800
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Actually, nevermind. I was misunderstood what Xen was. I thought it was a 
usermode virtual machine. It isn't.


On Wednesday 29 October 2003 10:51 am, Ian Duggan wrote:
> Does anyone have plans to get any of the current L4 kernels working with
> Xen? They claim to have pretty good perfomance, but require a modified
> kernel to work. Might be useful for speeding up development. Xen currently
> has a version of the 2.4 linux kernel working with it, and apparently
> they've worked with Microsoft to get XP running on it as well.
> http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html
> This one bit from the TODO shares some goals with uKernels:
> =====================================
> We'd also like to experiment moving the network and block device
> drivers out of Xen, and each into their own special domains that are
> given access to the specific set of h/w resources they need to
> operate.  This will provide some isolation against faulty device
> drivers, potentially allowing them to be restarted on failure. There
> may be more context switches incurred, but due to Xen's pipelined
> asynchronous i/o interface we expect this overhead to be amortised.
> This architecture would also allow device drivers to be easily
> upgraded independent of Xen, which is necessary for our vision of Xen
> as a next-gen BIOS replacement.
> =====================================
> -- Ian
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Ian Duggan    address@hidden    http://www.ianduggan.net
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> --
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Ian Duggan    address@hidden    http://www.ianduggan.net                    

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