Re: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header

[kernel test robot <lkp@intel.com>]

Hi Juergen,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on kvm/queue kvm/next linus/master v6.17-rc6 next-20250917]
[cannot apply to tip/x86/core kvm/linux-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Juergen-Gross/x86-paravirt-Remove-not-needed-includes-of-paravirt-h/20250917-230321
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20250917145220.31064-22-jgross%40suse.com
patch subject: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
config: x86_64-randconfig-003-20250918 (https://download.01.org/0day-ci/archive/20250918/202509181008.MoLd2u4e-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250918/202509181008.MoLd2u4e-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509181008.MoLd2u4e-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/paravirt-spinlocks.c:13:13: warning: no previous prototype for function 'native_pv_lock_init' [-Wmissing-prototypes]
      13 | void __init native_pv_lock_init(void)
         |             ^
   arch/x86/kernel/paravirt-spinlocks.c:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      13 | void __init native_pv_lock_init(void)
         | ^
         | static 
   1 warning generated.


vim +/native_pv_lock_init +13 arch/x86/kernel/paravirt-spinlocks.c

    12	
  > 13	void __init native_pv_lock_init(void)
    14	{
    15		if (boot_cpu_has(X86_FEATURE_HYPERVISOR))
    16			static_branch_enable(&virt_spin_lock_key);
    17	}
    18	

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