Hi Nuno, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on asm-generic/master] [cannot apply to tip/master linux/master linus/master tip/x86/core v5.14-rc4 next-20210806] [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/Nuno-Das-Neves/Microsoft-Hypervisor-root-partition-ioctl-interface/20210806-052633 base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master config: x86_64-randconfig-a004-20210804 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 42b9c2a17a0b63cccf3ac197a82f91b28e53e643) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/1048d10eb7ae04271f1f8378500091cc82470ceb git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Nuno-Das-Neves/Microsoft-Hypervisor-root-partition-ioctl-interface/20210806-052633 git checkout 1048d10eb7ae04271f1f8378500091cc82470ceb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> usr/include/asm-generic/hyperv-tlfs.h:25: found __[us]{8,16,32,64} type without #include --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org