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Message-ID: <50CEE586.10800@itwm.fraunhofer.de>
Date: Mon, 17 Dec 2012 10:27:34 +0100
From: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
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To: Yinghai Lu <yinghai@kernel.org>
CC: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [regression] 3.7 ends in APIC panic
References: <50CB3EAB.309@itwm.fraunhofer.de> <CAE9FiQVFSx7sJhYbREk+gfdgxO6uMgHWdDv1tbkU=VXqfH4iAg@mail.gmail.com> <CAE9FiQUyj65jB4bPkJQHGRZEkhOry736g362-m145vNYRRSdAQ@mail.gmail.com> <50CE0C82.20708@itwm.fraunhofer.de> <CAE9FiQUJ-TZCCOki3XfMOgOvOL=TiApJGQdHcHNAPmYKRtVk6A@mail.gmail.com>
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On 12/16/2012 07:07 PM, Yinghai Lu wrote:
> On Sun, Dec 16, 2012 at 10:01 AM, Bernd Schubert
> <bernd.schubert@itwm.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.

The system boots fine with x2apic enabled.


Thanks a bunch for your help,
Bernd