Hi Yi-De, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on krzk-dt/for-next arm64/for-next/core lwn/docs-next linus/master v6.3-rc6 next-20230412] [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/Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230413-170932 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20230413090735.4182-4-yi-de.wu%40mediatek.com patch subject: [PATCH v1 3/6] soc: mediatek: virt: geniezone: Introduce GenieZone hypervisor support config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230413/202304132051.wGFK08qz-lkp@xxxxxxxxx/config) compiler: aarch64-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/2d01949ddd48b1bc2cc9849154afe60781068f39 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230413-170932 git checkout 2d01949ddd48b1bc2cc9849154afe60781068f39 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/soc/mediatek/virt/geniezone/ 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/202304132051.wGFK08qz-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/soc/mediatek/virt/geniezone/gzvm_vm.c:31:5: warning: no previous prototype for 'gzvm_gfn_to_pfn_memslot' [-Wmissing-prototypes] 31 | int gzvm_gfn_to_pfn_memslot(struct gzvm_memslot *memslot, u64 gfn, u64 *pfn) | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/gzvm_gfn_to_pfn_memslot +31 drivers/soc/mediatek/virt/geniezone/gzvm_vm.c 19 20 21 /** 22 * @brief Translate gfn (guest ipa) to pfn (host pa), result is in @pfn 23 * 24 * Leverage KVM's `gfn_to_pfn_memslot`. Because `gfn_to_pfn_memslot` needs 25 * kvm_memory_slot as parameter, this function populates necessary fileds 26 * for calling `gfn_to_pfn_memslot`. 27 * 28 * @retval 0 succeed 29 * @retval -EFAULT failed to convert 30 */ > 31 int gzvm_gfn_to_pfn_memslot(struct gzvm_memslot *memslot, u64 gfn, u64 *pfn) 32 { 33 hfn_t __pfn; 34 struct kvm_memory_slot kvm_slot = {0}; 35 36 kvm_slot.base_gfn = memslot->base_gfn; 37 kvm_slot.npages = memslot->npages; 38 kvm_slot.dirty_bitmap = NULL; 39 kvm_slot.userspace_addr = memslot->userspace_addr; 40 kvm_slot.flags = memslot->flags; 41 kvm_slot.id = memslot->slot_id; 42 kvm_slot.as_id = 0; 43 44 __pfn = gfn_to_pfn_memslot(&kvm_slot, gfn); 45 if (is_error_noslot_pfn(__pfn)) { 46 *pfn = 0; 47 return -EFAULT; 48 } 49 50 *pfn = __pfn; 51 return 0; 52 } 53 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
