Hi Eric, Thank you for the patch! Yet something to improve: [auto build test ERROR on vfio/next] [also build test ERROR on v5.6-rc6 next-20200320] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-VFIO-part/20200321-040935 base: https://github.com/awilliam/linux-vfio.git next config: arm64-randconfig-a001-20200321 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/linux/vfio.h:16, from drivers/vfio/vfio.c:32: >> include/uapi/linux/vfio.h:811:34: error: field 'config' has incomplete type 811 | struct iommu_pasid_table_config config; /* used on SET */ | ^~~~~~ -- In file included from include/linux/vfio.h:16, from drivers/vfio/vfio_iommu_type1.c:35: >> include/uapi/linux/vfio.h:811:34: error: field 'config' has incomplete type 811 | struct iommu_pasid_table_config config; /* used on SET */ | ^~~~~~ drivers/vfio/vfio_iommu_type1.c: In function 'vfio_detach_pasid_table': >> drivers/vfio/vfio_iommu_type1.c:2204:3: error: implicit declaration of function 'iommu_detach_pasid_table'; did you mean 'vfio_detach_pasid_table'? [-Werror=implicit-function-declaration] 2204 | iommu_detach_pasid_table(d->domain); | ^~~~~~~~~~~~~~~~~~~~~~~~ | vfio_detach_pasid_table drivers/vfio/vfio_iommu_type1.c: In function 'vfio_attach_pasid_table': >> drivers/vfio/vfio_iommu_type1.c:2219:9: error: implicit declaration of function 'iommu_attach_pasid_table'; did you mean 'vfio_attach_pasid_table'? [-Werror=implicit-function-declaration] 2219 | ret = iommu_attach_pasid_table(d->domain, &ustruct->config); | ^~~~~~~~~~~~~~~~~~~~~~~~ | vfio_attach_pasid_table cc1: some warnings being treated as errors vim +/config +811 include/uapi/linux/vfio.h 797 798 /** 799 * VFIO_IOMMU_SET_PASID_TABLE - _IOWR(VFIO_TYPE, VFIO_BASE + 22, 800 * struct vfio_iommu_type1_set_pasid_table) 801 * 802 * The SET operation passes a PASID table to the host while the 803 * UNSET operation detaches the one currently programmed. Setting 804 * a table while another is already programmed replaces the old table. 805 */ 806 struct vfio_iommu_type1_set_pasid_table { 807 __u32 argsz; 808 __u32 flags; 809 #define VFIO_PASID_TABLE_FLAG_SET (1 << 0) 810 #define VFIO_PASID_TABLE_FLAG_UNSET (1 << 1) > 811 struct iommu_pasid_table_config config; /* used on SET */ 812 }; 813 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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