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, 04 Jun 2012 07:59:41 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Don Zickus <dzickus@...hat.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 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...

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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