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xen-ia64-devel

RE: [Xen-ia64-devel][PATCH] optimization for windows

To: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Subject: RE: [Xen-ia64-devel][PATCH] optimization for windows
From: Alex Williamson <alex.williamson@xxxxxx>
Date: Fri, 27 Apr 2007 07:08:11 -0600
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On Fri, 2007-04-27 at 17:36 +0800, Xu, Anthony wrote:
> >Wouldn't it be better to have some generic features like "region x identity
> >mapping with attributes y" which can be set via DomU configuration file?
> It is not convenient for user.
> And user can't know this information, if we provide this interface to user.
> User may be confused, and if user uses this configuration incorrectly, it 
> will 
> break guest.

   I think we need to be careful not to hide too many assumptions about
the guest in Xen as well.  We can't be certain another OS won't use
region 7 like this at some point.  I agree that a requiring a user to
know certain memory layout attributes is way too low level, but what
about a simple flag like "guest = windows".  Yes, it's not automatic
like the code is now, but it feels more supportable.  Thanks,

        Alex
-- 
Alex Williamson                             HP Open Source & Linux Org.


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