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[Xen-devel] Xenoprof and the hypervisor

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Xenoprof and the hypervisor
From: "David Carr" <dc@xxxxxxxxx>
Date: Tue, 23 May 2006 16:11:33 -0500 (CDT)
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Thanks in part to Jose's help I've gotten oprofile working on multiple
domains with unstable.  After reading the original Xenoprof paper, I have
a question about how hypervisor samples are handled.  If my understanding
is correct, all samples pass through the hypervisor where they are then
dispatched to the profiler in the corresponding domain.  This makes sense
in the case where code running in a given domain makes a hypercall. 
However, what happens when a hardware interrupt triggers code execution in
the hypervisor?  Where do such samples end up getting dispatched to and

David Carr

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