Re: [Xen-devel] [PATCH] idle/x86: remove the call to boot_init_stack_canary() from cpu_startup_entry()

[kbuild test robot <lkp@xxxxxxxxx>]

Hi Christophe,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on xen-tip/linux-next]
[also build test ERROR on v4.19-rc8 next-20181019]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Christophe-Leroy/idle-x86-remove-the-call-to-boot_init_stack_canary-from-cpu_startup_entry/20181020-015124
base:   https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git linux-next
config: x86_64-randconfig-s1-10200246 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86//xen/smp_pv.c: In function 'cpu_bringup_and_idle':
>> arch/x86//xen/smp_pv.c:91:2: error: implicit declaration of function 
>> 'boot_init_stack_canary' [-Werror=implicit-function-declaration]
     boot_init_stack_canary();
     ^~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/boot_init_stack_canary +91 arch/x86//xen/smp_pv.c

    87  
    88  asmlinkage __visible void cpu_bringup_and_idle(void)
    89  {
    90          cpu_bringup();
  > 91          boot_init_stack_canary();
    92          cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
    93  }
    94  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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