Hi Jordan, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on powerpc/next] [also build test ERROR on v5.9-rc1 next-20200819] [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/Jordan-Niethe/KVM-PPC-Use-the-pp... base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc64-randconfig-r025-20200818 (attached as .config) compiler: powerpc-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=powerpc64 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 >>): arch/powerpc/kvm/booke.c:600:6: error: no previous prototype for 'kvmppc_watchdog_func' [-Werror=missing-prototypes] 600 | void kvmppc_watchdog_func(struct timer_list *t) | ^~~~~~~~~~~~~~~~~~~~ arch/powerpc/kvm/booke.c: In function 'emulation_exit': 823 | run->hw.hardware_exit_reason = ~0ULL << 32; | ^~~ arch/powerpc/kvm/booke.c:823:3: note: each undeclared identifier is reported only once for each function it appears in arch/powerpc/kvm/booke.c: In function 'kvmppc_resume_inst_load': arch/powerpc/kvm/booke.c:969:3: error: 'run' undeclared (first use in this function) 969 | run->hw.hardware_exit_reason = ~0ULL << 32; | ^~~ arch/powerpc/kvm/booke.c: At top level: arch/powerpc/kvm/booke.c:984:5: error: no previous prototype for 'kvmppc_handle_exit' [-Werror=missing-prototypes] 984 | int kvmppc_handle_exit(struct kvm_vcpu *vcpu, unsigned int exit_nr) | ^~~~~~~~~~~~~~~~~~ arch/powerpc/kvm/booke.c:1909:6: error: no previous prototype for 'kvm_guest_protect_msr' [-Werror=missing-prototypes] 1909 | void kvm_guest_protect_msr(struct kvm_vcpu *vcpu, ulong prot_bitmap, bool set) | ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors # https://github.com/0day-ci/linux/commit/1025d48f0402f678140989df94e55a62f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jordan-Niethe/KVM-PPC-Use-the-ppc_inst-type/20200820-114059 git checkout 1025d48f0402f678140989df94e55a62f67c1d48 vim +/run +823 arch/powerpc/kvm/booke.c 801 802 static int emulation_exit(struct kvm_vcpu *vcpu) 803 { 804 enum emulation_result er; 805 806 er = kvmppc_emulate_instruction(vcpu); 807 switch (er) { 808 case EMULATE_DONE: 809 /* don't overwrite subtypes, just account kvm_stats */ 810 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS); 811 /* Future optimization: only reload non-volatiles if 812 * they were actually modified by emulation. */ 813 return RESUME_GUEST_NV; 814 815 case EMULATE_AGAIN: 816 return RESUME_GUEST; 817 818 case EMULATE_FAIL: 819 printk(KERN_CRIT "%s: emulation at %lx failed (%s)\n", 820 __func__, vcpu->arch.regs.nip, ppc_inst_as_str(vcpu->arch.last_inst)); 821 /* For debugging, encode the failing instruction and 822 * report it to userspace. */ 824 run->hw.hardware_exit_reason |= ppc_inst_val(vcpu->arch.last_inst); 825 kvmppc_core_queue_program(vcpu, ESR_PIL); 826 return RESUME_HOST; 827 828 case EMULATE_EXIT_USER: 829 return RESUME_HOST; 830 831 default: 832 BUG(); 833 } 834 } 835 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org