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Date: Sun, 15 Jul 2012 19:52:12 -0600
From: David Ahern <dsahern@gmail.com>
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To: Avi Kivity <avi@redhat.com>
CC: Gleb Natapov <gleb@redhat.com>, Peter Zijlstra <peterz@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: perf with precise attribute kills all KVM based VMs
References: <1341845396.3462.81.camel@twins> <4FFAEFF1.9000706@redhat.com> <1341845999.3462.86.camel@twins> <4FFCBD00.1030109@gmail.com> <20120711071006.GF23898@redhat.com> <1342000187.3462.134.camel@twins> <20120711095337.GJ23898@redhat.com> <4FFE4E8D.90606@gmail.com> <20120712042923.GG7298@redhat.com> <4FFEEB55.5070009@gmail.com> <20120712160634.GI7298@redhat.com> <50027A36.9070509@redhat.com> <5002BEE3.5060506@gmail.com> <5002BF9B.8090306@redhat.com>
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On 7/15/12 7:03 AM, Avi Kivity wrote:
> I assume 'h' means profiling the hypervisor from a guest (i.e. xen dom0)?

I do not think so. It does not appear to do anything on x86.