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Re: [Xen-devel] Guest OS without paging

To: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
From: Ivan Kelly <ivan@xxxxxxxxxxxxx>
Date: Wed, 9 Nov 2005 13:31:07 +0000
Cc: Ivan Kelly <ivan@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 09 Nov 2005 13:26:47 +0000
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Mail-followup-to: Ivan Kelly <ivan@xxxxxxxxxxxxx>, Mark Williamson <mark.williamson@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx

On Wed, Nov 09, 2005 at 01:19:10PM +0000, Mark Williamson wrote:
> Out of interest, what exactly does it do with segmentation?  Most CPUs don't 
> have segmentation hardware at all...  I can imagine ways they might have 
> overlaid it on the flat memory model without affective other ports though...  
> Task isolation?  Kernel / user protection?
I haven't looked too deeply into the segmentation, but it's using a GDT so it
is doing something with it. I'll update you when i find out more.
Regards
Ivan

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