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Date: Tue, 1 Mar 2016 15:51:05 +0100
From: Andi Kleen <andi@firstfloor.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>, "Liang, Kan" <kan.liang@intel.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Ingo Molnar <mingo@kernel.org>, Andi Kleen <andi@firstfloor.org>,
        Stephane Eranian <eranian@google.com>, Wang Nan <wangnan0@huawei.com>,
        "zheng.z.yan@intel.com" <zheng.z.yan@intel.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] Core2 cpu triggers hard lockup with perf test
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> im on it.. also the patch that makes this happen just
> enlarge the buffer for PEBS:
> 
>   156174999dd1 perf/intel/x86: Enlarge the PEBS buffer
> 
> but I did not find anyaPEBS buffer lenght limitations in SDM

May be the easiest would be to just keep the old buffer size
on Merom.

-Andi