Hi Andy, I love your patch! Perhaps something to improve: [auto build test WARNING on next-20230224] url: https://github.com/intel-lab-lkp/linux/commits/Andy-Chiu/riscv-Rename-__switch_to_aux-fpu/20230225-011059 patch link: https://lore.kernel.org/r/20230224170118.16766-20-andy.chiu%40sifive.com patch subject: [PATCH -next v14 19/19] riscv: Enable Vector code to be built config: riscv-randconfig-r042-20230223 (https://download.01.org/0day-ci/archive/20230225/202302251633.Tsr3ebfs-lkp@xxxxxxxxx/config) compiler: riscv32-linux-gcc (GCC) 12.1.0 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 # https://github.com/intel-lab-lkp/linux/commit/cd0ad21a9ef9d63f1eef80fd3b09ae6e0d884ce3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andy-Chiu/riscv-Rename-__switch_to_aux-fpu/20230225-011059 git checkout cd0ad21a9ef9d63f1eef80fd3b09ae6e0d884ce3 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302251633.Tsr3ebfs-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> arch/riscv/kernel/vector.c:67:5: warning: no previous prototype for 'riscv_v_thread_zalloc' [-Wmissing-prototypes] 67 | int riscv_v_thread_zalloc(void) | ^~~~~~~~~~~~~~~~~~~~~ vim +/riscv_v_thread_zalloc +67 arch/riscv/kernel/vector.c b57b7b7279ef75 Andy Chiu 2023-02-24 66 b57b7b7279ef75 Andy Chiu 2023-02-24 @67 int riscv_v_thread_zalloc(void) b57b7b7279ef75 Andy Chiu 2023-02-24 68 { b57b7b7279ef75 Andy Chiu 2023-02-24 69 void *datap; b57b7b7279ef75 Andy Chiu 2023-02-24 70 b57b7b7279ef75 Andy Chiu 2023-02-24 71 datap = kzalloc(riscv_v_vsize, GFP_KERNEL); b57b7b7279ef75 Andy Chiu 2023-02-24 72 if (!datap) b57b7b7279ef75 Andy Chiu 2023-02-24 73 return -ENOMEM; b57b7b7279ef75 Andy Chiu 2023-02-24 74 current->thread.vstate.datap = datap; b57b7b7279ef75 Andy Chiu 2023-02-24 75 memset(¤t->thread.vstate, 0, offsetof(struct __riscv_v_ext_state, b57b7b7279ef75 Andy Chiu 2023-02-24 76 datap)); b57b7b7279ef75 Andy Chiu 2023-02-24 77 return 0; b57b7b7279ef75 Andy Chiu 2023-02-24 78 } b57b7b7279ef75 Andy Chiu 2023-02-24 79 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
