linux-kernel - Re: perf with precise attribute kills all KVM based VMs

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Message-ID: <1341845396.3462.81.camel@twins>
Date:	Mon, 09 Jul 2012 16:49:56 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	David Ahern <dsahern@...il.com>
Cc:	Avi Kivity <avi@...hat.com>, Gleb Natapov <gleb@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: perf with precise attribute kills all KVM based VMs

On Mon, 2012-07-09 at 08:47 -0600, David Ahern wrote:
> 
> I found this testing changes to perf-kvm, but found the problem extends 
> to just perf-record. With perf-record exclude_guest defaults to 1. See 
> tools/perf/util/util.c, event_attr_init(). 

You lost me there.. so perf-record defaults to exclude_guest=1 (which
would make the proposed patch I just send actually possible), but its
still going *bang* ?
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