| Date | Thu, 5 Jun 2014 14:45:29 +0200 | Subject | Re: [PATCH 0/9] perf/x86: implement HT counter corruption workaround | From | Stephane Eranian <> |
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On Thu, Jun 5, 2014 at 12:28 AM, Andi Kleen <ak@linux.intel.com> wrote: >> There is no HW or FW workaround for this problem. > > Actually there is for global measurements: > > measure with Any bit set and divide by two. > > Please add a check that the any bit is set, and disable > the workaround for that case. > I think this assume same event is measured on sibling counters at any time. Otherwise, how does that eliminate the corruption?
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