tree: https://github.com/jgunthorpe/linux vfio_iommufd head: a97b7f88065ebfd42e065dd37f092fadf031b154 commit: ba8f921671cd4870b4cdbaf6d605faa57aee226d [23/24] vfio: Make vfio_container optionally compiled config: arm-buildonly-randconfig-r002-20220925 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/jgunthorpe/linux/commit/ba8f921671cd4870b4cdbaf6d605faa57aee226d git remote add jgunthorpe https://github.com/jgunthorpe/linux git fetch --no-tags jgunthorpe vfio_iommufd git checkout ba8f921671cd4870b4cdbaf6d605faa57aee226d # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/iommu/ drivers/vfio/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from drivers/vfio/vfio_main.c:39: >> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes] int vfio_container_pin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_pin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes] void vfio_container_unpin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void vfio_container_unpin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes] int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ static drivers/vfio/vfio_main.c:680:3: error: call to undeclared function 'vfio_group_detach_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_group_detach_container(group); ^ drivers/vfio/vfio_main.c:767:9: error: call to undeclared function 'vfio_group_use_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ret = vfio_group_use_container(device->group); ^ drivers/vfio/vfio_main.c:767:9: note: did you mean 'vfio_group_ioctl_set_container'? drivers/vfio/vfio_main.c:692:12: note: 'vfio_group_ioctl_set_container' declared here static int vfio_group_ioctl_set_container(struct vfio_group *group, ^ drivers/vfio/vfio_main.c:783:3: error: call to undeclared function 'vfio_device_container_register'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_device_container_register(device); ^ drivers/vfio/vfio_main.c:789:3: error: call to undeclared function 'vfio_group_unuse_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_group_unuse_container(device->group); ^ drivers/vfio/vfio_main.c:789:3: note: did you mean 'vfio_group_ioctl_set_container'? drivers/vfio/vfio_main.c:692:12: note: 'vfio_group_ioctl_set_container' declared here static int vfio_group_ioctl_set_container(struct vfio_group *group, ^ drivers/vfio/vfio_main.c:804:3: error: call to undeclared function 'vfio_device_container_unregister'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_device_container_unregister(device); ^ drivers/vfio/vfio_main.c:809:3: error: call to undeclared function 'vfio_group_unuse_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_group_unuse_container(device->group); ^ drivers/vfio/vfio_main.c:1004:3: error: call to undeclared function 'vfio_group_detach_container'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_group_detach_container(group); ^ 3 warnings and 7 errors generated. -- In file included from drivers/vfio/iommufd.c:8: >> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes] int vfio_container_pin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_pin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes] void vfio_container_unpin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void vfio_container_unpin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes] int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ static 3 warnings generated. -- In file included from drivers/vfio/vfio_iommu_type1.c:42: >> drivers/vfio/vfio.h:172:5: warning: no previous prototype for function 'vfio_container_pin_pages' [-Wmissing-prototypes] int vfio_container_pin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_pin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:179:6: warning: no previous prototype for function 'vfio_container_unpin_pages' [-Wmissing-prototypes] void vfio_container_unpin_pages(struct vfio_container *container, ^ drivers/vfio/vfio.h:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void vfio_container_unpin_pages(struct vfio_container *container, ^ static >> drivers/vfio/vfio.h:184:5: warning: no previous prototype for function 'vfio_container_dma_rw' [-Wmissing-prototypes] int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ drivers/vfio/vfio.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, ^ static >> drivers/vfio/vfio_iommu_type1.c:3168:14: warning: declaration of 'enum vfio_iommu_notify_type' will not be visible outside of this function [-Wvisibility] enum vfio_iommu_notify_type event) ^ drivers/vfio/vfio_iommu_type1.c:3168:37: error: variable has incomplete type 'enum vfio_iommu_notify_type' enum vfio_iommu_notify_type event) ^ drivers/vfio/vfio_iommu_type1.c:3168:14: note: forward declaration of 'enum vfio_iommu_notify_type' enum vfio_iommu_notify_type event) ^ drivers/vfio/vfio_iommu_type1.c:3172:15: error: use of undeclared identifier 'VFIO_IOMMU_CONTAINER_CLOSE' if (event != VFIO_IOMMU_CONTAINER_CLOSE) ^ drivers/vfio/vfio_iommu_type1.c:3180:43: error: variable has incomplete type 'const struct vfio_iommu_driver_ops' static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = { ^ drivers/vfio/vfio_iommu_type1.c:3180:21: note: forward declaration of 'struct vfio_iommu_driver_ops' static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = { ^ drivers/vfio/vfio_iommu_type1.c:3199:9: error: call to undeclared function 'vfio_register_iommu_driver'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] return vfio_register_iommu_driver(&vfio_iommu_driver_ops_type1); ^ drivers/vfio/vfio_iommu_type1.c:3204:2: error: call to undeclared function 'vfio_unregister_iommu_driver'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] vfio_unregister_iommu_driver(&vfio_iommu_driver_ops_type1); ^ drivers/vfio/vfio_iommu_type1.c:3204:2: note: did you mean 'vfio_unregister_group_dev'? include/linux/vfio.h:228:6: note: 'vfio_unregister_group_dev' declared here void vfio_unregister_group_dev(struct vfio_device *device); ^ 4 warnings and 5 errors generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for TEGRA20_APB_DMA Depends on [n]: DMADEVICES [=n] && (ARCH_TEGRA [=y] || COMPILE_TEST [=y]) Selected by [y]: - SOC_TEGRA_FUSE [=y] && ARCH_TEGRA [=y] && ARCH_TEGRA_2x_SOC [=y] WARNING: unmet direct dependencies detected for VFIO_IOMMU_TYPE1 Depends on [n]: VFIO [=y] && VFIO_CONTAINER [=n] Selected by [y]: - VFIO [=y] && (IOMMUFD [=y] || !IOMMUFD [=y]) && MMU [=y] && (X86 || S390 || ARM [=y] || ARM64) vim +/vfio_container_pin_pages +172 drivers/vfio/vfio.h 171 > 172 int vfio_container_pin_pages(struct vfio_container *container, 173 struct iommu_group *iommu_group, dma_addr_t iova, 174 int npage, int prot, struct page **pages) 175 { 176 return -EOPNOTSUPP; 177 } 178 > 179 void vfio_container_unpin_pages(struct vfio_container *container, 180 dma_addr_t iova, int npage) 181 { 182 } 183 > 184 int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova, 185 void *data, size_t len, bool write) 186 { 187 return -EOPNOTSUPP; 188 } 189 -- 0-DAY CI Kernel Test Service https://01.org/lkp