linux-kernel - Re: [PATCH 07/14] mce3: pass mce info to EDAC for decoding

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Message-ID: <4A6538EE.6000903@jp.fujitsu.com>
Date:	Tue, 21 Jul 2009 12:41:34 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Andi Kleen <andi@...stfloor.org>, Doug Thompson <norsk5@...oo.com>,
	Borislav Petkov <borislav.petkov@....com>, mingo@...e.hu,
	tglx@...utronix.de, aris@...hat.com, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH 07/14] mce3: pass mce info to EDAC for decoding

H. Peter Anvin wrote:
>  If you want modules to change the behavior, you're talking about a
> *dynamic* change -- the call will point to different things at different
> points in time -- so you need another mechanism, i.e. function pointers.

Just FYI, machine check handler on ia64 has such function pointer.

[arch/ia64/kernel/mca.c]
    826 /* Function pointer for extra MCA recovery */
    827 int (*ia64_mca_ucmc_extension)
    828         (void*,struct ia64_sal_os_state*)
    829         = NULL;


Thanks,
H.Seto

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