linux-kernel - Re: [PATCH 5/6] x86, nmi: Move default external NMI handler to its own routine

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Message-ID: <20140521103846.GA2485@laptop.programming.kicks-ass.net>
Date:	Wed, 21 May 2014 12:38:46 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	x86@...nel.org, Andi Kleen <andi@...stfloor.org>,
	gong.chen@...ux.intel.com, LKML <linux-kernel@...r.kernel.org>,
	Elliott@...com, thomas.mingarelli@...com
Subject: Re: [PATCH 5/6] x86, nmi: Move default external NMI handler to its
 own routine

On Thu, May 15, 2014 at 03:25:48PM -0400, Don Zickus wrote:
> Now that we have setup an NMI subtye called NMI_EXT, there is really
> no need to hard code the default external NMI handler in the main
> nmi handler routine.
> 
> Move it to a proper function and register it on boot.  This change is
> just code movement.
> 
> In addition, update the hpwdt to allow it to unregister the default
> handler on its registration (and vice versa).  This allows the driver
> to take control of that io port (which it ultimately wanted to do
> originally), but in a cleaner way.

wanting that is one thing, but is it also a sane thing? You don't do
thing just because drivers want it.
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