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RE: [Xen-devel] VMM detection

from [Li, Xin] [Permanent Link][Original]
To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Wu Bingzheng <wubingzheng@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] VMM detection
From: "Li, Xin" <xin.li@xxxxxxxxx>
Date: Fri, 6 Mar 2009 09:56:44 +0800
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Thread-topic: [Xen-devel] VMM detection 
>> I want to know if we can use these instructions to detect VMM on a HVM
>guest.
>
>No, they behave 'natively' when running as an HVM guest. The guest cannot
>easily tell it is running on a VMM.

How about from performance side? At least some instructions are much slower
in a VM than native today.
-Xin

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