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Re: [Xen-devel] Guest OS without paging

from [Mark Williamson] [Permanent Link][Original]
To: Ivan Kelly <ivan@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Guest OS without paging
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Wed, 9 Nov 2005 13:28:54 +0000
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> 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.

x86 forces you to set up segmentation whether you actually want to use it or 
not...  It may not be doing anything with it - people who want to ignore 
segmentation happily create a 0-4Gig segment, then pretend they have a flat 
(or paged) memory model.  Crazy crazy architecture ;-)

Cheers,
Mark

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