[powerpc:next-test 40/58] WARNING: vmlinux.o(.text+0xb038): Section mismatch in reference from the function setup_kup() to the function .init.text:setup_kuep()

[Christophe Leroy]

Russel, Michael,

Looks like the reported problem comes from b28c97505eb1 ("powerpc/64: 
Setup KUP on secondary CPUs") 
(https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=b28c97505eb1a5265e367c398c3406be6ce5e313)

Is it really necessary to remove the __init tag on setup_kup() ?

Christophe

Le 21/04/2019 à 18:23, kbuild test robot a écrit :
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test
> head:   26ad26718dfaa7cf49d106d212ebf2370076c253
> commit: 06fbe81b5909847aa13f9c86c2b6f9bbc5c2795b [40/58] powerpc/8xx: Add Kernel Userspace Execution Prevention
> config: powerpc-mpc885_ads_defconfig (attached as .config)
> compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
> reproduce:
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          git checkout 06fbe81b5909847aa13f9c86c2b6f9bbc5c2795b
>          # save the attached .config to linux build tree
>          GCC_VERSION=7.2.0 make.cross ARCH=powerpc
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp at intel.com>
> 
> 
> All warnings (new ones prefixed by >>):
> 
>>> WARNING: vmlinux.o(.text+0xb038): Section mismatch in reference from the function setup_kup() to the function .init.text:setup_kuep()
>     The function setup_kup() references
>     the function __init setup_kuep().
>     This is often because setup_kup lacks a __init
>     annotation or the annotation of setup_kuep is wrong.
> 
> ---
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