From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "Berck E. Nash" <flyboy@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: x2apic boot failure on recent sandy bridge system
Date: Sun, 11 Dec 2011 08:57:13 +0100 [thread overview]
Message-ID: <20111211075713.GA20790@elte.hu> (raw)
In-Reply-To: <CAE9FiQXH6d0eAjbQ0Dz3Q8NR6ktP_x6UKtzDtuq8253Qv4KS7w@mail.gmail.com>
* Yinghai Lu <yinghai@kernel.org> wrote:
> so kernel can not enable interrput remapping, then it will panic..
>
> [ 0.085717] Kernel panic - not syncing: x2apic: enabled by BIOS but
> kernel init failed.
> [ 0.093697] Pid: 1, comm: swapper/0 Not tainted 3.2.0-rc5 #2
> [ 0.099337] Call Trace:
> [ 0.101788] [<ffffffff8137b7ce>] ? panic+0x95/0x18e
> [ 0.106755] [<ffffffff81016259>] ? __ioapic_write_entry+0x16/0x32
> [ 0.112925] [<ffffffff8152d5bf>] ? enable_IR_x2apic+0x19a/0x1d7
> [ 0.118913] [<ffffffff8152f281>] ? default_setup_apic_routing+0xd/0x71
> [ 0.125506] [<ffffffff8152c536>] ? native_smp_prepare_cpus+0x2f1/0x325
> [ 0.132102] [<ffffffff81522abf>] ? kernel_init+0x46/0x10f
> [ 0.137571] [<ffffffff813841f4>] ? kernel_thread_helper+0x4/0x10
> [ 0.143650] [<ffffffff81522a79>] ? start_kernel+0x341/0x341
> [ 0.149297] [<ffffffff813841f0>] ? gs_change+0xb/0xb
>
> your bios should not enable x2apic in this case.
>
> please get one bios update.
>
> also I have one old patch that could disable apic. but it is
> not get merged and it may not be applied to current tree.
What we want is not a nox2apic option but a good fall-back
mechanism that is able to boot the system automatically and
safely, without the user having to tweak *anything* ...
Tanks,
Ingo
next prev parent reply other threads:[~2011-12-11 7:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-10 1:56 x2apic boot failure on recent sandy bridge system Berck E. Nash
2011-12-10 20:17 ` Yinghai Lu
2011-12-10 22:58 ` Berck E. Nash
2011-12-10 23:11 ` Yinghai Lu
2011-12-11 7:57 ` Ingo Molnar [this message]
2011-12-11 21:43 ` Yinghai Lu
2011-12-11 22:05 ` Berck E. Nash
2011-12-12 3:40 ` Yinghai Lu
2011-12-12 23:21 ` Berck E. Nash
2011-12-13 0:25 ` Suresh Siddha
2011-12-13 1:29 ` Yinghai Lu
2011-12-13 1:41 ` Suresh Siddha
2011-12-13 4:32 ` Yinghai Lu
2011-12-13 5:13 ` Yinghai Lu
2011-12-16 13:59 ` Berck E. Nash
2011-12-18 8:47 ` Ingo Molnar
2011-12-12 23:42 ` H. Peter Anvin
2011-12-13 1:25 ` Yinghai Lu
2011-12-12 7:23 ` Suresh Siddha
[not found] <fa.1zfuXwqYK6u81uBoo3IdpawcpWw@ifi.uio.no>
[not found] ` <fa.p3cpkKIGUNv0/iot3o7KT9bb98M@ifi.uio.no>
[not found] ` <fa.iPHW7usT23k+cCA19L3eXEDu91Q@ifi.uio.no>
[not found] ` <fa.7eOK+XcsKUWU4ZXhBj2K6znxrvc@ifi.uio.no>
[not found] ` <fa.VGxfKOh1Z07X1TXm5PxMIlV4xu8@ifi.uio.no>
[not found] ` <fa.eH+BpYDdp4xIWE4V+wJu6hFrVxM@ifi.uio.no>
2012-10-19 20:42 ` rrl125
2012-10-19 23:03 ` Suresh Siddha
2012-10-19 23:32 ` Yinghai Lu
2012-10-19 23:36 ` H. Peter Anvin
2012-10-20 0:02 ` Suresh Siddha
2012-10-20 0:41 ` Yinghai Lu
-- strict thread matches above, loose matches on Subject: below --
2011-12-10 1:46 Berck E. Nash
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