From: Ingo Molnar <mingo@elte.hu>
To: Ravikiran G Thirumalai <kiran@scalex86.org>
Cc: Yinghai Lu <yinghai@kernel.org>,
Cyrill Gorcunov <gorcunov@gmail.com>,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
shai@scalex86.org, Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: [patch] x86: 2.6.31-rc7 crash due to buggy flat_phys_pkg_id
Date: Tue, 25 Aug 2009 21:33:58 +0200 [thread overview]
Message-ID: <20090825193358.GA29968@elte.hu> (raw)
In-Reply-To: <20090825192757.GE6456@localdomain>
* Ravikiran G Thirumalai <kiran@scalex86.org> wrote:
> On Tue, Aug 25, 2009 at 11:50:56AM -0700, Yinghai Lu wrote:
> >Cyrill Gorcunov wrote:
> >
> >initial apic id and apic id could be different.
> >
> >and we should use initial apic id to get correct phys pkg id in case BIOS set crazy apic id.
> >
>
> Is there a specific bug we are fixing here? Again, this behavior
> was present from atleast 2.6.15-2.6.30 on 'flat' and older
> 'cluster' apics, and intel documentation suggests local apic be
> used. Is there a specific bios bug that is being fixed?
>
> (The BIOS is not supposed to set a crazy apic ID. The BIOS is
> buggy in that case -- Quoting section 9.4.6 from Intel System
> programming guide vol 3A part 1:
That means very little. If Yinghai fixed a real bug in an existing
system we should consider it. Yinghai?
Ingo
next prev parent reply other threads:[~2009-08-25 19:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-24 18:26 [patch] x86: 2.6.31-rc7 crash due to buggy flat_phys_pkg_id Ravikiran G Thirumalai
2009-08-24 23:53 ` Yinghai Lu
2009-08-25 0:27 ` Yinghai Lu
2009-08-25 1:38 ` Ravikiran G Thirumalai
2009-08-25 5:03 ` Yinghai Lu
2009-08-25 1:26 ` Ravikiran G Thirumalai
2009-08-25 5:12 ` Yinghai Lu
2009-08-25 17:17 ` Ravikiran G Thirumalai
2009-08-25 18:15 ` Ingo Molnar
2009-08-25 18:31 ` Cyrill Gorcunov
2009-08-25 18:50 ` Yinghai Lu
2009-08-25 18:57 ` Linus Torvalds
2009-08-25 19:12 ` Ingo Molnar
2009-08-25 19:17 ` Yinghai Lu
2009-08-25 19:24 ` Ingo Molnar
2009-08-25 20:36 ` Ravikiran G Thirumalai
2009-08-25 20:44 ` [PATCH] x86: fix vsmp booting with phys_pkg_id changing Yinghai Lu
2009-08-26 8:08 ` Ingo Molnar
2009-08-26 8:15 ` [tip:x86/urgent] x86: Fix vSMP boot crash tip-bot for Yinghai Lu
2009-08-25 19:53 ` [patch] x86: 2.6.31-rc7 crash due to buggy flat_phys_pkg_id Ravikiran G Thirumalai
2009-08-25 18:59 ` Cyrill Gorcunov
2009-08-25 19:27 ` Ravikiran G Thirumalai
2009-08-25 19:33 ` Ingo Molnar [this message]
2009-08-25 19:36 ` Yinghai Lu
2009-08-25 19:20 ` Ravikiran G Thirumalai
2009-08-25 19:26 ` Ingo Molnar
2009-08-25 19:40 ` Cyrill Gorcunov
2009-08-25 18:35 ` Yinghai Lu
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