Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on awilliam-vfio/for-linus] [also build test WARNING on kvm/queue rafael-pm/linux-next linus/master] [cannot apply to akpm-mm/mm-everything awilliam-vfio/next kvm/linux-next next-20230925] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/ankita-nvidia-com/mm-handle-poisoning-of-pfn-without-struct-pages/20230920-220626 base: https://github.com/awilliam/linux-vfio.git for-linus patch link: https://lore.kernel.org/r/20230920140210.12663-5-ankita%40nvidia.com patch subject: [PATCH v1 4/4] vfio/nvgpu: register device memory for poison handling config: powerpc64-allmodconfig (https://download.01.org/0day-ci/archive/20230925/202309252319.hQ7rHJTJ-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230925/202309252319.hQ7rHJTJ-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <yujie.liu@xxxxxxxxx> | Closes: https://lore.kernel.org/r/202309252319.hQ7rHJTJ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/vfio/pci/nvgrace-gpu/main.c:27:6: warning: no previous prototype for function 'nvgrace_gpu_vfio_pci_pfn_memory_failure' [-Wmissing-prototypes] 27 | void nvgrace_gpu_vfio_pci_pfn_memory_failure(struct pfn_address_space *pfn_space, | ^ drivers/vfio/pci/nvgrace-gpu/main.c:27:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 27 | void nvgrace_gpu_vfio_pci_pfn_memory_failure(struct pfn_address_space *pfn_space, | ^ | static drivers/vfio/pci/nvgrace-gpu/main.c:300:9: warning: no previous prototype for function 'nvgrace_gpu_read_mem' [-Wmissing-prototypes] 300 | ssize_t nvgrace_gpu_read_mem(void __user *buf, size_t count, loff_t *ppos, | ^ drivers/vfio/pci/nvgrace-gpu/main.c:300:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 300 | ssize_t nvgrace_gpu_read_mem(void __user *buf, size_t count, loff_t *ppos, | ^ | static drivers/vfio/pci/nvgrace-gpu/main.c:376:9: warning: no previous prototype for function 'nvgrace_gpu_write_mem' [-Wmissing-prototypes] 376 | ssize_t nvgrace_gpu_write_mem(size_t count, loff_t *ppos, const void __user *buf, | ^ drivers/vfio/pci/nvgrace-gpu/main.c:376:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 376 | ssize_t nvgrace_gpu_write_mem(size_t count, loff_t *ppos, const void __user *buf, | ^ | static 3 warnings generated. vim +/nvgrace_gpu_vfio_pci_pfn_memory_failure +27 drivers/vfio/pci/nvgrace-gpu/main.c b59e9d949a79e1 Ankit Agrawal 2023-09-14 25 5f3746d8629350 Ankit Agrawal 2023-09-20 26 #ifdef CONFIG_MEMORY_FAILURE 5f3746d8629350 Ankit Agrawal 2023-09-20 @27 void nvgrace_gpu_vfio_pci_pfn_memory_failure(struct pfn_address_space *pfn_space, 5f3746d8629350 Ankit Agrawal 2023-09-20 28 unsigned long pfn) 5f3746d8629350 Ankit Agrawal 2023-09-20 29 { 5f3746d8629350 Ankit Agrawal 2023-09-20 30 struct nvgrace_gpu_vfio_pci_core_device *nvdev = container_of( 5f3746d8629350 Ankit Agrawal 2023-09-20 31 pfn_space, struct nvgrace_gpu_vfio_pci_core_device, pfn_address_space); 5f3746d8629350 Ankit Agrawal 2023-09-20 32 unsigned long mem_offset = pfn - pfn_space->node.start; 5f3746d8629350 Ankit Agrawal 2023-09-20 33 5f3746d8629350 Ankit Agrawal 2023-09-20 34 if (mem_offset >= nvdev->memlength) 5f3746d8629350 Ankit Agrawal 2023-09-20 35 return; 5f3746d8629350 Ankit Agrawal 2023-09-20 36 5f3746d8629350 Ankit Agrawal 2023-09-20 37 /* 5f3746d8629350 Ankit Agrawal 2023-09-20 38 * MM has called to notify a poisoned page. Track that in the bitmap. 5f3746d8629350 Ankit Agrawal 2023-09-20 39 */ 5f3746d8629350 Ankit Agrawal 2023-09-20 40 __set_bit(mem_offset, nvdev->pfn_bitmap); 5f3746d8629350 Ankit Agrawal 2023-09-20 41 } 5f3746d8629350 Ankit Agrawal 2023-09-20 42 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
