linux-kernel - Re: [PATCH] x86,nmi: Fix section mismatch warnings on 32-bit

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Message-ID: <20120608054048.GA18796@merkur.ravnborg.org>
Date:	Fri, 8 Jun 2012 07:40:48 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	Jan Beulich <JBeulich@...e.com>, x86@...nel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86,nmi: Fix section mismatch warnings on 32-bit

On Thu, Jun 07, 2012 at 10:06:54PM -0400, Don Zickus wrote:
> On Tue, Jun 05, 2012 at 07:22:08PM +0200, Sam Ravnborg wrote:
> > > >> I do not know enough about behind the scene compiler magic to track this
> > > >> down correctly.  So any insight/help is greatly appreciated. :-)
> > > > 
> > > > We register a function annotated __init. And the normal use of this 
> > > > register()
> > > > is for functions that survive the init phase.
> > > > So drop the __init annotation on the function we register and the mismatch 
> > > > is fixed.
> > > 
> > > But in the case here the function really is being used at init time
> > > only.
> > This is only for testing. Ando nly if CONFIG_DEBUG_NMI_SELFTEST is set.
> 
> Hi Sam,
> 
> Sorry for ignoring your responses before.  Somehow your emails were not
> hitting my inbox for some reason, but I found them in my lkml folder.
> 
> So I am confused on the right way to fix this.
> 
> Sam is saying drop the __init and Jan is suggesting add __initdata for
> these two special cases.
> 
> Anyone want to break the tie? :-)

IMO Jan's approach with __initdata is overkill, but I do not care
much about it.

	Sam
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