Hi "Adalbert, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on 3d9fdc252b52023260de1d12399cb3157ed28c07] url: https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/... base: 3d9fdc252b52023260de1d12399cb3157ed28c07 config: mips-allmodconfig (attached as .config) compiler: mips-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=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from arch/mips/kernel/asm-offsets.c:24: 887 | struct kvm_xsave *guest_xsave); | ^~~~~~~~~ arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 93 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 110 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 138 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 181 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:220:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 220 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 255 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:322:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 322 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:334:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 334 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 348 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:392:6: warning: no previous prototype for 'output_cps_defines' [-Wmissing-prototypes] 392 | void output_cps_defines(void) | ^~~~~~~~~~~~~~~~~~ -- In file included from arch/mips/kernel/asm-offsets.c:24: 887 | struct kvm_xsave *guest_xsave); | ^~~~~~~~~ arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 93 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 110 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 138 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 181 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:220:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 220 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 255 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:322:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 322 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:334:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 334 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 348 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:392:6: warning: no previous prototype for 'output_cps_defines' [-Wmissing-prototypes] 392 | void output_cps_defines(void) | ^~~~~~~~~~~~~~~~~~ vim +887 include/linux/kvm_host.h 862 863 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 864 struct kvm_translation *tr); 865 866 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 867 void kvm_arch_vcpu_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 868 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 869 void kvm_arch_vcpu_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs, 870 bool clear_exception); 871 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 872 struct kvm_sregs *sregs); 873 void kvm_arch_vcpu_get_sregs(struct kvm_vcpu *vcpu, 874 struct kvm_sregs *sregs); 875 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 876 struct kvm_sregs *sregs); 877 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 878 struct kvm_mp_state *mp_state); 879 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 880 struct kvm_mp_state *mp_state); 881 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 882 struct kvm_guest_debug *dbg); 883 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu); 884 int kvm_arch_vcpu_set_guest_debug(struct kvm_vcpu *vcpu, 885 struct kvm_guest_debug *dbg); 886 void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu, 888 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org