linux-kernel - Re: [regression] 3.7 ends in APIC panic

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Message-ID: <CAE9FiQUJ-TZCCOki3XfMOgOvOL=TiApJGQdHcHNAPmYKRtVk6A@mail.gmail.com>
Date:	Sun, 16 Dec 2012 10:07:27 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bernd Schubert <bernd.schubert@...m.fraunhofer.de>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [regression] 3.7 ends in APIC panic

On Sun, Dec 16, 2012 at 10:01 AM, Bernd Schubert
<bernd.schubert@...m.fraunhofer.de> wrote:
>> can you post your .config for v3.7 ?
>>
>> wonder if you have x2apic in .config
>
> Which setting is it? Config is attached.

your config does not have

CONFIG_X86_X2APIC=y

set.

please enable that.

your BIOS pre-enable x2apic somehow, so you must have x2apic enabled in kernel.

it x2apic really can not be re-enabled by kernel, kernel would disable
x2apic automatically.

Thanks

Yinghai
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