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Re: [Xen-devel] VMM detection

To: Wu Bingzheng <wubingzheng@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] VMM detection
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Wed, 04 Mar 2009 08:47:59 +0000
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It would be impossible to hide virtualisation from a PV guest kernel of
course, and very hard to hide it from a PV guest application also.

 -- Keir

On 04/03/2009 06:51, "Wu Bingzheng" <wubingzheng@xxxxxxx> wrote:

> using SGDT to get GDT's address.
> If its address is 0xCxxxxxxx, then it's on physical hardware (the OS is Linux)
> If the address is 0xFxxxxxxx (0xFE820000), then it's on Xen.
> I test it, and it works.
> Can Xen do something to prevent this?

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