Hi Frederic,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v5.11-rc4 next-20210118]
[cannot apply to tip/x86/core]
[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]

url:    https://github.com/0day-ci/linux/commits/Frederic-Weisbecker/static_call-x86-Add-__static_call_return0/20210118-231312
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 65bcf072e20ed7597caa902f170f293662b0af3c
config: x86_64-randconfig-s022-20210118 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-208-g46a52ca4-dirty
        # https://github.com/0day-ci/linux/commit/56103459734b6ee3e431c9907b11e0008319ae34
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Frederic-Weisbecker/static_call-x86-Add-__static_call_return0/20210118-231312
        git checkout 56103459734b6ee3e431c9907b11e0008319ae34
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> Warning: Kernel ABI header at 'tools/include/linux/static_call_types.h' differs from latest version at 'include/linux/static_call_types.h'
--
>> Warning: Kernel ABI header at 'tools/include/linux/static_call_types.h' differs from latest version at 'include/linux/static_call_types.h'

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