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[Xen-devel] how to determine whether 2 virtual guests are on the same physical machine

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "Jian Wang" <jeans.wang@xxxxxxxxx>
  • Date: Wed, 16 Jan 2008 22:10:00 -0500
  • Delivery-date: Wed, 16 Jan 2008 19:10:20 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi folks,
I wanna find out the most convenient way for the following question:
***Give me any two virtual guests, are they on the same physical machine?***

I guess there must be some common variables that guests within
one physical host are sharing, but as far as I know, xenstore cannot
give me feasible answer(I have checked all the entries in xenstore,
NONE is unique among physical hosts).
So I am trying to look for some pointers, like
page table beginning address, dom0 net_device pointer,
but seems they are not accessible from vm guests.

My question is : are there any system unique pointers  that guests could
get access to?


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