linux-kernel - Re: [PATCH 11/15] x86: move enabling of io_apic to prepare

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Message-ID: <Pine.LNX.4.55.0806100341520.31588@cliff.in.clinika.pl>
Date:	Tue, 10 Jun 2008 03:46:05 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Yinghai Lu <yhlu.kernel@...il.com>
cc:	Glauber Costa <gcosta@...hat.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu,
	hugh@...itas.com
Subject: Re: [PATCH 11/15] x86: move enabling of io_apic to prepare_cpus

On Mon, 9 Jun 2008, Maciej W. Rozycki wrote:

> > we need clear_IO_APIC before enable setup error vector, in case there
> > is wrong setting in ioapic by BIOS...
> 
>  Fair enough, although it is still interesting why it would only trigger 
> in the 64-bit mode and why shouldn't the BIOS be fixed instead.

 Then again -- what if X86_LOCAL_APIC is set, but X86_IO_APIC is not?

  Maciej
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