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Message-ID: <CAADnVQL3X_UqA1Oz1msuz8LyP0CTGG5iy16YwjdPUhoNTk31yQ@mail.gmail.com>
Date: Tue, 28 Oct 2014 16:15:38 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Andi Kleen <andi@...stfloor.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Stephane Eranian <eranian@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
"Yan, Zheng" <zheng.z.yan@...el.com>
Subject: Re: [PATCH 2/5] perf, x86, uncore: Add Haswell-EP uncore support
On Tue, Oct 28, 2014 at 8:30 AM, Andi Kleen <andi@...stfloor.org> wrote:
>> snbep_uncore_msr_init_box() is called with:
>> [ 1.055678] msr 0
>> [ 1.056027] msr 3584
>> [ 1.056376] msr 3600
>> [ 1.056725] msr 3616
>> [ 1.057074] msr 3632
>> [ 1.057424] msr 1824
>
> So it would normally crash here, right? That's the SBOX.
>
> When you remove the sbox in hswep_msr_uncores the crash goes away,
> correct?
yes. removing line 'hswep_uncore_sbox' also worked as workaround.
You have an idea what's going on?
I suspect other folks will see the same crash when E5 v3
become more widespread.
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