From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@XenSource.com>
Subject: Re: How to determine if I am running under Xen?
Date: Fri, 21 Sep 2007 07:23:36 +0100
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To: James Harper <james.harper@bendigoit.com.au>
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On Fri, 2007-09-21 at 14:04 +1000, James Harper wrote:
> Does anyone have a code snippet that I could use (in kernel space) to
> determine if I am running under Xen or not in a HVM domain?

"cpuid eax=0x40000000" will return XenVMMXenVMM in (ebx,ecx,edx) or you
could just look for the Xen PCI device -- see unmodified_drivers in the
xen source for examples of both.

Ian.