linux-kernel - Re: WARNING: arch/x86/built-in.o: Section mismatch in reference from the variable test_nmi_ipi_callback_na to function .ini.text:test_nmi_ipi

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Date:	Mon, 4 Jun 2012 11:08:31 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Witold Baryluk <baryluk@....if.uj.edu.pl>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org
Subject: Re: WARNING: arch/x86/built-in.o: Section mismatch in reference from
 the variable test_nmi_ipi_callback_na to function
 .ini.text:test_nmi_ipi_callback

On Mon, Jun 04, 2012 at 07:59:41AM -0700, H. Peter Anvin wrote:
> On 06/04/2012 07:36 AM, Don Zickus wrote:
> > 
> > Basically the test registers two nmi_handlers, run some tests, and
> > then unregisters them.  Those handlers are what the compiler seems to be
> > complaining about.  I do not know what magic to pass the compiler to let
> > it know that both of the handlers will be unregistered before the init
> > section is destroyed.
> > 
> > Perhaps I should tag those callbacks with __ref? I am not sure the right
> > thing to do here.
> > 
> 
> Using __ref is the right thing, although __ref is hard to use right...

Thanks!  I'll poke at it and see how lucky I get.

Cheers,
Don
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