linux-kernel - Re: [PATCH 2/5] perf, x86, uncore: Add Haswell-EP uncore support

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Message-ID: <87sii9pvwq.fsf@tassilo.jf.intel.com>
Date:	Mon, 27 Oct 2014 04:57:41 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, 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

Alexei Starovoitov <alexei.starovoitov@...il.com> writes:
> my E5-1630 v3 crashes hard during boot in
> snbep_uncore_msr_init_box()+0x3c

> I don't have a setup to capture the screen so early in the boot.
> So this is just heads up.

Is it a general general protection fault or a page fault?

If it's a page fault please post the disassembled code:

gdb vmlinux
disassemble  snbep_uncore_msr_init_box

> I replaced the call above with 'return -ENODEV' as a workaround.
> btw, E5-16xx v3 became available just a month ago.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only
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