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Re: [Xen-devel] where is writable page table implemented?

from [Tim Deegan] [Permanent Link][Original]
To: weiming <zephyr.zhao@xxxxxxxxx>
Subject: Re: [Xen-devel] where is writable page table implemented?
From: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Date: Tue, 1 Apr 2008 08:38:25 +0000
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At 19:43 -0400 on 30 Mar (1206906207), weiming wrote:
> with writable page table, why guest os still calls update_va_mapping to
> update the pte? 

It's faster to call into Xen with an explicit modification, or a list of
them, than to have xen trap and do a full x86 instruction emaulation to
figure out what you werere doing.

Cheers,

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Citrix Systems (R&D) Ltd.
[Company #02300071, SL9 0DZ, UK.]

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