linux-kernel - Re: [PATCH v2 2/2] hyperv: Enable clean shutdown for root partition with MSHV

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Message-ID: <202510151359.vRXcys2P-lkp@intel.com>
Date: Wed, 15 Oct 2025 13:23:42 +0800
From: kernel test robot <lkp@...el.com>
To: Praveen K Paladugu <prapal@...ux.microsoft.com>, kys@...rosoft.com,
	haiyangz@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com,
	tglx@...utronix.de, mingo@...hat.com, linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org, bp@...en8.de,
	dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
	arnd@...db.de
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	anbelski@...ux.microsoft.com, prapal@...ux.microsoft.com,
	easwar.hariharan@...ux.microsoft.com,
	nunodasneves@...ux.microsoft.com, skinsburskii@...ux.microsoft.com
Subject: Re: [PATCH v2 2/2] hyperv: Enable clean shutdown for root partition
 with MSHV

Hi Praveen,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/x86/core]
[also build test WARNING on linus/master v6.18-rc1 next-20251014]
[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/Praveen-K-Paladugu/hyperv-Add-definitions-for-MSHV-sleep-state-configuration/20251015-004650
base:   tip/x86/core
patch link:    https://lore.kernel.org/r/20251014164150.6935-3-prapal%40linux.microsoft.com
patch subject: [PATCH v2 2/2] hyperv: Enable clean shutdown for root partition with MSHV
config: i386-randconfig-006-20251015 (https://download.01.org/0day-ci/archive/20251015/202510151359.vRXcys2P-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/20251015/202510151359.vRXcys2P-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510151359.vRXcys2P-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/hv/hv_common.c:944:5: warning: no previous prototype for function 'hv_sleep_notifiers_register' [-Wmissing-prototypes]
     944 | int hv_sleep_notifiers_register(void)
         |     ^
   drivers/hv/hv_common.c:944:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     944 | int hv_sleep_notifiers_register(void)
         | ^
         | static 
   1 warning generated.


vim +/hv_sleep_notifiers_register +944 drivers/hv/hv_common.c

   943	
 > 944	int hv_sleep_notifiers_register(void)

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki