tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3579aa488520feeda433ceca23ef4704bf8cd280 commit: 6d0aaf5e0de00491de136f387ebed55604cedebe [10774/13831] powerpc/pseries/vas: Setup IRQ and fault handling config: powerpc-randconfig-r031-20210628 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4c92e31dd0f1bd152eda883af20ff7fbcaa14945) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6d0aaf5e0de00491de136f387ebed55604cedebe git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 6d0aaf5e0de00491de136f387ebed55604cedebe # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/powerpc/platforms/pseries/vas.c:186:13: error: no previous prototype for function 'pseries_vas_fault_thread_fn' [-Werror,-Wmissing-prototypes] irqreturn_t pseries_vas_fault_thread_fn(int irq, void *data) ^ arch/powerpc/platforms/pseries/vas.c:186:1: note: declare 'static' if the function is not intended to be used outside of this translation unit irqreturn_t pseries_vas_fault_thread_fn(int irq, void *data) ^ static 1 error generated. vim +/pseries_vas_fault_thread_fn +186 arch/powerpc/platforms/pseries/vas.c 176 177 /* 178 * Handle the fault interrupt. 179 * When the fault interrupt is received for each window, query the 180 * hypervisor to get the fault CRB on the specific fault. Then 181 * process the CRB by updating CSB or send signal if the user space 182 * CSB is invalid. 183 * Note: The hypervisor forwards an interrupt for each fault request. 184 * So one fault CRB to process for each H_GET_NX_FAULT hcall. 185 */ > 186 irqreturn_t pseries_vas_fault_thread_fn(int irq, void *data) 187 { 188 struct pseries_vas_window *txwin = data; 189 struct coprocessor_request_block crb; 190 struct vas_user_win_ref *tsk_ref; 191 int rc; 192 193 rc = h_get_nx_fault(txwin->vas_win.winid, (u64)virt_to_phys(&crb)); 194 if (!rc) { 195 tsk_ref = &txwin->vas_win.task_ref; 196 vas_dump_crb(&crb); 197 vas_update_csb(&crb, tsk_ref); 198 } 199 200 return IRQ_HANDLED; 201 } 202 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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