Hi Krish, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on vhost/linux-next] [also build test WARNING on v5.8-rc6 next-20200724] [cannot apply to kvm/linux-next] [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/Krish-Sadhukhan/KVM-x86-Fill-in-conforming-vmx-svm-_x86_ops-and-vmx-svm-_nested_ops-via-macros/20200725-113105 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/s390/kvm/kvm-s390.c:315:6: warning: no previous prototype for 'kvm_arch_hardware_unsetup' [-Wmissing-prototypes] 315 | void kvm_arch_hardware_unsetup(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/kvm_arch_hardware_unsetup +315 arch/s390/kvm/kvm-s390.c b0c632db637d68a Heiko Carstens 2008-03-25 314 b0c632db637d68a Heiko Carstens 2008-03-25 @315 void kvm_arch_hardware_unsetup(void) b0c632db637d68a Heiko Carstens 2008-03-25 316 { b2d73b2a0ad1c75 Martin Schwidefsky 2016-03-08 317 gmap_unregister_pte_notifier(&gmap_notifier); a3508fbe9dc6dd3 David Hildenbrand 2015-07-08 318 gmap_unregister_pte_notifier(&vsie_gmap_notifier); fdf036507f1fc03 Fan Zhang 2015-05-13 319 atomic_notifier_chain_unregister(&s390_epoch_delta_notifier, fdf036507f1fc03 Fan Zhang 2015-05-13 320 &kvm_clock_notifier); b0c632db637d68a Heiko Carstens 2008-03-25 321 } b0c632db637d68a Heiko Carstens 2008-03-25 322 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org