Hi "Maciej, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/queue] [also build test ERROR on kvms390/next v5.14-rc5 next-20210813] [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/Maciej-S-Szmigiero/KVM-Scalable-... base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue config: i386-randconfig-a005-20210814 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/172883fe88fb9dc0533b916b2f4177008... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maciej-S-Szmigiero/KVM-Scalable-memslots-implementation/20210814-040318 git checkout 172883fe88fb9dc0533b916b2f4177008d35e05a # 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(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org