linux-kernel - Re: [PATCH] x86_64: clear IO_APIC before enabing apic error vector. v2

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Message-ID: <20071230145115.GR16946@elte.hu>
Date:	Sun, 30 Dec 2007 15:51:15 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <Yinghai.Lu@....COM>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Andi Kleen <ak@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86_64: clear IO_APIC before enabing apic error
	vector. v2


* Yinghai Lu <Yinghai.Lu@....COM> wrote:

> please check if you can replace the one in the x86-mm
> 
> http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-x86.git;a=commitdiff;h=ffcbdc220a1520d006a837f33589c7c19ffbeb76
> 
> the updated one avoid one link warning.

please send delta patches instead - so that we can review the changes.

> this is the updated verison that take enable_IO_APIC as extra call for 
> setup_local_APIC to avoid linking warning.

hm, what link warning did you get? Perhaps the following __cpuinit:

> -void __cpuinit setup_local_APIC (void)

does not mix well with an __init call:

> +void __init enable_IO_APIC(void)

and you hack it around by using a function pointer. Nasty and still 
buggy. The proper solution would be to mark enable_IO_APIC as __cpuinit 
too (or something like that).

	Ingo
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