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Date: Thu, 24 Mar 2011 19:47:37 +0300
From: Cyrill Gorcunov <gorcunov@gmail.com>
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To: Ingo Molnar <mingo@elte.hu>
CC: Lin Ming <ming.m.lin@intel.com>, Don Zickus <dzickus@redhat.com>,
        Linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -tip] perf, x86: P4 PMU - Add missing read of a counter
 before test
References: <AANLkTikwJFCrpTit8=-=agowkTwZtoyEtFaE7yp0O8MF@mail.gmail.com> <20110324084819.GH30812@elte.hu> <4D8B6569.2030001@gmail.com> <20110324163332.GA2414@elte.hu> <4D8B7570.40101@gmail.com>
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On 03/24/2011 07:46 PM, Cyrill Gorcunov wrote:
...
>>
>> So what effect does this have on the regular perf user? Please try to describe 
>> the real-life effect of the bug/problem fixed here.
>>
>> Thanks,
>>
>> 	Ingo
> 
> Unflagged overflows never have been catched due to missed read of a register which
> is to signalize about it, and as result unknown nmi may happen leading to
> "Dazen and confused" message. That is what supposed to be in changelog?
> 

Or you mean the tech details would be appropriate in changelog as well? If so
I could put such details there.

-- 
    Cyrill