From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from
 host side
Date: Wed, 17 Mar 2010 09:16:41 +0100
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Cc: "Frank Ch. Eigler" <fche@redhat.com>,
	Anthony Liguori <aliguori@linux.vnet.ibm.com>,
	"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Sheng Yang <sheng@linux.intel.com>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	Marcelo Tosatti <mtosatti@redhat.com>,
	oerg Roedel <joro@8bytes.org>,
	Jes Sorensen <Jes.Sorensen@redhat.com>,
	Gleb Natapov <gleb@redhat.com>,
	Zachary Amsden <zamsden@redhat.com>, ziteng.huang@intel.com
To: Avi Kivity <avi@redhat.com>
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* Avi Kivity <avi@redhat.com> wrote:

> Monitoring guests from the host is useful for kvm developers, but less so 
> for users.

Guest space profiling is easy, and 'perf kvm' is not about that. (plain 'perf' 
will work if a proper paravirt channel is opened to the host)

I think you might have misunderstood the purpose and role of the 'perf kvm' 
patch here? 'perf kvm' is aimed at KVM developers: it is them who improve KVM 
code, not guest kernel users.

	Ingo