linux-kernel - Re: [RFC] arch generic way to trigger unknown NMIs

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Message-ID: <alpine.LFD.2.00.1010161710290.15889@eddie.linux-mips.org>
Date:	Sat, 16 Oct 2010 17:15:16 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Cyrill Gorcunov <gorcunov@...il.com>
cc:	Don Zickus <dzickus@...hat.com>, Andi Kleen <andi@...stfloor.org>,
	mingo@...e.hu, fweisbec@...il.com, robert.richter@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] arch generic way to trigger unknown NMIs

On Sat, 16 Oct 2010, Cyrill Gorcunov wrote:

>  Hi Maciej, the send_IPI_self could be modified to send NMI (at moment it
> uses self shortcut with fixed delivery mode). The question is rather if
> we need it without a real caller yet. When Don's patch gets merged we
> will have a real caller then and could update send_IPI_self to support
> NMI delivery mode. Something like that :)

 Sounds backwards to me.  My understanding is a need has just arisen, so 
why not:

1. Update send_IPI_self().

2. Add code that makes use of the new functionality.

3. Submit all the changes as self-contained patches in a single series to 
   be applied at the same time.

?  That's what I'd imagine the most natural way of doing this would be.

  Maciej
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