Hi Sean, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on kvm/queue] [also build test ERROR on vhost/linux-next linus/master v5.12-rc7 next-20210413] [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/Sean-Christopherson/KVM-Fix-tick... base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue config: powerpc64-randconfig-r023-20210413 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9829f5e6b1bca9b61efc629770d28bb9014dec45) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://github.com/0day-ci/linux/commit/3f339890e27d8d4673de753b889fc5025... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sean-Christopherson/KVM-Fix-tick-based-vtime-accounting-on-x86/20210414-023106 git checkout 3f339890e27d8d4673de753b889fc5025413330d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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 >>): In file included from arch/powerpc/kernel/asm-offsets.c:23: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:9: include/linux/vtime.h:68:3: error: implicit declaration of function 'vtime_guest_enter' [-Werror,-Wimplicit-function-declaration] vtime_guest_enter(current); ^ include/linux/vtime.h:76:3: error: implicit declaration of function 'vtime_guest_exit' [-Werror,-Wimplicit-function-declaration] vtime_guest_exit(current); ^ include/linux/vtime.h:111:13: error: conflicting types for 'vtime_guest_enter' extern void vtime_guest_enter(struct task_struct *tsk); ^ include/linux/vtime.h:68:3: note: previous implicit declaration is here vtime_guest_enter(current); ^ include/linux/vtime.h:112:13: error: conflicting types for 'vtime_guest_exit' extern void vtime_guest_exit(struct task_struct *tsk); ^ include/linux/vtime.h:76:3: note: previous implicit declaration is here vtime_guest_exit(current); ^ In file included from arch/powerpc/kernel/asm-offsets.c:38: In file included from arch/powerpc/include/asm/dbell.h:17: In file included from arch/powerpc/include/asm/kvm_ppc.h:19: In file included from include/linux/kvm_host.h:25: return context_tracking_enabled_this_cpu(); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/context_tracking.h:148:6: error: invalid argument type 'void' to unary expression if (!context_tracking_guest_enter_irqoff()) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 6 errors generated. -- In file included from arch/powerpc/kernel/asm-offsets.c:23: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:9: include/linux/vtime.h:68:3: error: implicit declaration of function 'vtime_guest_enter' [-Werror,-Wimplicit-function-declaration] vtime_guest_enter(current); ^ include/linux/vtime.h:76:3: error: implicit declaration of function 'vtime_guest_exit' [-Werror,-Wimplicit-function-declaration] vtime_guest_exit(current); ^ include/linux/vtime.h:111:13: error: conflicting types for 'vtime_guest_enter' extern void vtime_guest_enter(struct task_struct *tsk); ^ include/linux/vtime.h:68:3: note: previous implicit declaration is here vtime_guest_enter(current); ^ include/linux/vtime.h:112:13: error: conflicting types for 'vtime_guest_exit' extern void vtime_guest_exit(struct task_struct *tsk); ^ include/linux/vtime.h:76:3: note: previous implicit declaration is here vtime_guest_exit(current); ^ In file included from arch/powerpc/kernel/asm-offsets.c:38: In file included from arch/powerpc/include/asm/dbell.h:17: In file included from arch/powerpc/include/asm/kvm_ppc.h:19: In file included from include/linux/kvm_host.h:25: return context_tracking_enabled_this_cpu(); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/context_tracking.h:148:6: error: invalid argument type 'void' to unary expression if (!context_tracking_guest_enter_irqoff()) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 6 errors generated. make[2]: *** [scripts/Makefile.build:116: arch/powerpc/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1235: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/context_tracking_guest_enter_irqoff +79 include/linux/context_tracking.h 73 74 static __always_inline void context_tracking_guest_enter_irqoff(void) 75 { 76 if (context_tracking_enabled()) 77 __context_tracking_enter(CONTEXT_GUEST); 78 80 } 81 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org