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Message-ID: <20121217140238.GA626@gmail.com> Date: Mon, 17 Dec 2012 15:02:38 +0100 From: Ingo Molnar <mingo@...nel.org> To: Bernd Schubert <bernd.schubert@...m.fraunhofer.de> Cc: Yinghai Lu <yinghai@...nel.org>, linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>, Suresh Siddha <suresh.b.siddha@...el.com>, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [regression] 3.7 ends in APIC panic * Bernd Schubert <bernd.schubert@...m.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@...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. > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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