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Subject: Re: [RFC] para virt interface of perf to support kvm guest os
 statistics collection in guest os
From: Peter Zijlstra <peterz@infradead.org>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Avi Kivity <avi@redhat.com>, LKML <linux-kernel@vger.kernel.org>,
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       tim.c.chen@intel.com
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Date: Thu, 10 Jun 2010 11:50:37 +0200
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On Thu, 2010-06-10 at 10:21 +0800, Zhang, Yanmin wrote:
> . The ABI mostly includes the definition of struct perf_event_attr,
> guest_perf_counter,
> and hypercalls. 

Note that perf_event_attr isn't guaranteed to be stable between kernels,
it can grow.
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