Re: [PATCH] x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup

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

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Hi Sean,

I love your patch! Yet something to improve:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on tip/auto-latest v5.7 next-20200605]
[cannot apply to bp/for-next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Sean-Christopherson/x86-cpu-Reinitialize-IA32_FEAT_CTL-MSR-on-BSP-during-wakeup/20200606-040921
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 9cb1fd0efd195590b828b9b865421ad345a4a145
config: i386-tinyconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

arch/x86/kernel/cpu/centaur.c: In function 'init_centaur':
>> arch/x86/kernel/cpu/centaur.c:219:2: error: implicit declaration of function 'init_ia32_feat_ctl' [-Werror=implicit-function-declaration]
219 |  init_ia32_feat_ctl(c);
|  ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
arch/x86/kernel/cpu/zhaoxin.c: In function 'init_zhaoxin':
>> arch/x86/kernel/cpu/zhaoxin.c:110:2: error: implicit declaration of function 'init_ia32_feat_ctl' [-Werror=implicit-function-declaration]
110 |  init_ia32_feat_ctl(c);
|  ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/init_ia32_feat_ctl +219 arch/x86/kernel/cpu/centaur.c

60882cc159e141 arch/x86/kernel/cpu/centaur.c  David Wang          2018-04-20  218  
501444905fcb41 arch/x86/kernel/cpu/centaur.c  Sean Christopherson 2019-12-20 @219  	init_ia32_feat_ctl(c);
^1da177e4c3f41 arch/i386/kernel/cpu/centaur.c Linus Torvalds      2005-04-16  220  }
^1da177e4c3f41 arch/i386/kernel/cpu/centaur.c Linus Torvalds      2005-04-16  221  

:::::: The code at line 219 was first introduced by commit
:::::: 501444905fcb4166589fda99497c273ac5efc65e x86/centaur: Use common IA32_FEAT_CTL MSR initialization

:::::: TO: Sean Christopherson <sean.j.christopherson@intel.com>
:::::: CC: Borislav Petkov <bp@suse.de>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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