From mboxrd@z Thu Jan  1 00:00:00 1970
From: Binary Huang <huang.bindi@163.com>
Subject: Using perf in ubuntu with xen hypervisor
Date: Mon, 11 Nov 2013 06:20:21 +0000 (UTC)
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Hi All!
I install perf in ubuntu 12.10. And when using the orginal kernel(3.5.0-40), 
perf works well. But when using kernel with xen 4.3, there are some events 
not supported, such as cycles, branches, instructions etc..

Are there anyone use perf in xen ??