From: Cyrill Gorcunov <gorcunov@gmail.com>
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
Date: Thu, 24 Mar 2011 19:47:37 +0300 [thread overview]
Message-ID: <4D8B75A9.3010002@gmail.com> (raw)
In-Reply-To: <4D8B7570.40101@gmail.com>
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
next prev parent reply other threads:[~2011-03-24 16:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 8:29 [PATCH -tip] perf, x86: P4 PMU - Add missing read of a counter before test Cyrill Gorcunov
2011-03-24 8:48 ` Ingo Molnar
2011-03-24 9:33 ` Cyrill Gorcunov
2011-03-24 15:38 ` Cyrill Gorcunov
2011-03-24 16:33 ` Ingo Molnar
2011-03-24 16:46 ` Cyrill Gorcunov
2011-03-24 16:47 ` Cyrill Gorcunov [this message]
2011-03-24 16:51 ` Ingo Molnar
2011-03-24 17:06 ` Cyrill Gorcunov
2011-03-24 18:22 ` Don Zickus
2011-03-24 18:26 ` Cyrill Gorcunov
2011-03-24 20:03 ` Ingo Molnar
2011-03-24 12:28 ` Don Zickus
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