section mismatch warnings in current git head for powerpc

section mismatch warnings in current git head for powerpc

[Chris Friesen]

I got the following warnings when building current git head for powerpc 
64bit:


   LD      net/ipv4/built-in.o
   LD      drivers/scsi/built-in.o
   LD      net/built-in.o
   LD      drivers/built-in.o
   LD      vmlinux.o
   MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x73bc): Section mismatch in reference from the 
function .start_secondary_prolog() to the function 
.devinit.text:.start_secondary()
The function .start_secondary_prolog() references
the function __devinit .start_secondary().
This is often because .start_secondary_prolog lacks a __devinit
annotation or the annotation of .start_secondary is wrong.

WARNING: vmlinux.o(.text+0x260a8): Section mismatch in reference from 
the function .pci_dn_reconfig_notifier() to the function 
.devinit.text:.update_dn_pci_info()
The function .pci_dn_reconfig_notifier() references
the function __devinit .update_dn_pci_info().
This is often because .pci_dn_reconfig_notifier lacks a __devinit
annotation or the annotation of .update_dn_pci_info is wrong.


Is this anything to worry about?

Thanks,
Chris

Re: section mismatch warnings in current git head for powerpc

[Bart Van Assche]

On Thu, May 22, 2008 at 7:22 PM, Chris Friesen <cfriesen@nortel.com> wrote:
> I got the following warnings when building current git head for powerpc
> 64bit:

Something that should be fixed, but not something to worry about.
Similar warnings appear when building the kernel for x86_64. See also
http://lkml.org/lkml/2008/4/13/98, http://lkml.org/lkml/2008/4/17/202
and http://bugzilla.kernel.org/show_bug.cgi?id=9974.

Bart.

Re: section mismatch warnings in current git head for powerpc

[Michael Ellerman]

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On Thu, 2008-05-22 at 11:22 -0600, Chris Friesen wrote:
> I got the following warnings when building current git head for powerpc 
> 64bit:
> 
> 
>    LD      net/ipv4/built-in.o
>    LD      drivers/scsi/built-in.o
>    LD      net/built-in.o
>    LD      drivers/built-in.o
>    LD      vmlinux.o
>    MODPOST vmlinux.o
> WARNING: vmlinux.o(.text+0x73bc): Section mismatch in reference from the 
> function .start_secondary_prolog() to the function 
> .devinit.text:.start_secondary()
> The function .start_secondary_prolog() references
> the function __devinit .start_secondary().
> This is often because .start_secondary_prolog lacks a __devinit
> annotation or the annotation of .start_secondary is wrong.

start_secondary_prolog() is in asm, so I don't know what you're supposed
to do with that.

> WARNING: vmlinux.o(.text+0x260a8): Section mismatch in reference from 
> the function .pci_dn_reconfig_notifier() to the function 
> .devinit.text:.update_dn_pci_info()
> The function .pci_dn_reconfig_notifier() references
> the function __devinit .update_dn_pci_info().
> This is often because .pci_dn_reconfig_notifier lacks a __devinit
> annotation or the annotation of .update_dn_pci_info is wrong.

I think pci_dn_reconfig_notifier() could be __devinit, but it's not
clear because the code that calls it is not __devinit or conditional on
HOTPLUG, eventhough in practice I think it is only used for hotplug.

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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