Messages in this thread | | | Date | Tue, 5 Jun 2012 18:13:18 +0200 | From | Sam Ravnborg <> | Subject | Re: [PATCH] x86,nmi: Fix section mismatch warnings on 32-bit |
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On Tue, Jun 05, 2012 at 10:47:34AM -0400, Don Zickus wrote: > On Tue, Jun 05, 2012 at 09:12:13AM +0100, Jan Beulich wrote: > > >>> On 04.06.12 at 21:56, Don Zickus <dzickus@redhat.com> wrote: > > > It was reported that compiling for 32-bit caused a bunch of section > > > mismatch warnings: > > > > > > VDSOSYM arch/x86/vdso/vdso32-syms.lds > > > LD arch/x86/vdso/built-in.o > > > LD arch/x86/built-in.o > > > WARNING: arch/x86/built-in.o(.data+0x5af0): Section mismatch in reference > > > from the variable > > > test_nmi_ipi_callback_na.10451 to the function > > > > Did you check what this (compiler introduced) variable actually > > represents? The problem clearly is that the compiler has no way > > of knowing that data it generates referencing an __init function > > would actually need to go into .init.data or alike. > > 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.
Sam
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