From: Ingo Molnar <mingo@kernel.org>
To: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Cc: Yinghai Lu <yinghai@kernel.org>,
linux-kernel@vger.kernel.org, Borislav Petkov <bp@alien8.de>,
Suresh Siddha <suresh.b.siddha@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [regression] 3.7 ends in APIC panic
Date: Mon, 17 Dec 2012 15:02:38 +0100 [thread overview]
Message-ID: <20121217140238.GA626@gmail.com> (raw)
In-Reply-To: <50CEE586.10800@itwm.fraunhofer.de>
* Bernd Schubert <bernd.schubert@itwm.fraunhofer.de> wrote:
> 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,
I suspect this needs to be fixed/improved: currently it's way
too easy to disable x2apic support accidentally.
Thanks,
Ingo
next prev parent reply other threads:[~2012-12-17 14:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-14 14:58 [regression] 3.7 ends in APIC panic Bernd Schubert
2012-12-16 11:35 ` Ingo Molnar
2012-12-16 15:33 ` Bernd Schubert
2012-12-16 17:43 ` Yinghai Lu
2012-12-16 17:45 ` Yinghai Lu
2012-12-16 18:01 ` Bernd Schubert
2012-12-16 18:07 ` Yinghai Lu
2012-12-16 18:28 ` Bernd Schubert
2012-12-16 19:13 ` Borislav Petkov
2012-12-16 19:46 ` Bernd Schubert
2012-12-16 20:39 ` Borislav Petkov
2012-12-17 9:34 ` Bernd Schubert
2012-12-17 10:00 ` Borislav Petkov
2012-12-17 13:11 ` Bernd Schubert
2012-12-17 9:27 ` Bernd Schubert
2012-12-17 14:02 ` Ingo Molnar [this message]
2012-12-17 16:53 ` Yinghai Lu
2012-12-17 16:56 ` H. Peter Anvin
2012-12-17 17:03 ` Yinghai Lu
-- strict thread matches above, loose matches on Subject: below --
2012-12-13 12:16 Bernd Schubert
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