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Re: [Xen-users] Basic Question

To: xen-users@xxxxxxxxxxxxxxxxxxx, Shahzad Chohan <shahzad.chohan@xxxxxxxxx>
Subject: Re: [Xen-users] Basic Question
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Wed, 15 Jun 2005 12:03:53 +0100
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> Whats the difference between the xenU and xen0 kernel. Is there a
> technical difference, does this relate to how xen works? Can some one
> please give me a little summary of how it works.

The xen0 kernel contains all the drivers required to run in a domU 
(unprivileged guest) *and* all the drivers required to run in dom0 (i.e. 
privileged command interface, device drivers for the real hardware, etc.).  
This'll run in *any* domain.

The xenU kernel contains only the drivers required to run in a domU - no 
privileged command interface, no drivers for real hardware.  The only 
practical difference is that this kernel is a few hundred kilobytes smaller 
but can only run in domUs.


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