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SubjectRe: perf with precise attribute kills all KVM based VMs
On Mon, Jul 09, 2012 at 05:51:29PM +0300, Avi Kivity wrote:
> On 07/09/2012 05:49 PM, Peter Zijlstra wrote:
> > 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* ?
>
> It's possible that the DS writes overshoot the MSR... or that there's a
> bug somewhere.
>
I hope it is the later, because we can do nothing with the former.

--
Gleb.


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