Hi Yi, 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/Liu-Yi-L/vfio-expose-virtual-Shared-Virtual-Addressing-to-VMs/20200322-213259 base: https://github.com/awilliam/linux-vfio.git next config: arm64-defconfig (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 >>): drivers/vfio/vfio_iommu_type1.c: In function 'vfio_iommu_get_stage1_format': >> drivers/vfio/vfio_iommu_type1.c:2273:4: error: 'DOMAIN_ATTR_PASID_FORMAT' undeclared (first use in this function) 2273 | DOMAIN_ATTR_PASID_FORMAT, &format)) { | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/vfio/vfio_iommu_type1.c:2273:4: note: each undeclared identifier is reported only once for each function it appears in drivers/vfio/vfio_iommu_type1.c: In function 'vfio_iommu_type1_ioctl': drivers/vfio/vfio_iommu_type1.c:2355:11: error: implicit declaration of function 'iommu_get_uapi_version' [-Werror=implicit-function-declaration] 2355 | return iommu_get_uapi_version(); | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/DOMAIN_ATTR_PASID_FORMAT +2273 drivers/vfio/vfio_iommu_type1.c 2257 2258 static int vfio_iommu_get_stage1_format(struct vfio_iommu *iommu, 2259 u32 *stage1_format) 2260 { 2261 struct vfio_domain *domain; 2262 u32 format = 0, tmp_format = 0; 2263 int ret; 2264 2265 mutex_lock(&iommu->lock); 2266 if (list_empty(&iommu->domain_list)) { 2267 mutex_unlock(&iommu->lock); 2268 return -EINVAL; 2269 } 2270 2271 list_for_each_entry(domain, &iommu->domain_list, next) { 2272 if (iommu_domain_get_attr(domain->domain, > 2273 DOMAIN_ATTR_PASID_FORMAT, &format)) { 2274 ret = -EINVAL; 2275 format = 0; 2276 goto out_unlock; 2277 } 2278 /* 2279 * format is always non-zero (the first format is 2280 * IOMMU_PASID_FORMAT_INTEL_VTD which is 1). For 2281 * the reason of potential different backed IOMMU 2282 * formats, here we expect to have identical formats 2283 * in the domain list, no mixed formats support. 2284 * return -EINVAL to fail the attempt of setup 2285 * VFIO_TYPE1_NESTING_IOMMU if non-identical formats 2286 * are detected. 2287 */ 2288 if (tmp_format && tmp_format != format) { 2289 ret = -EINVAL; 2290 format = 0; 2291 goto out_unlock; 2292 } 2293 2294 tmp_format = format; 2295 } 2296 ret = 0; 2297 2298 out_unlock: 2299 if (format) 2300 *stage1_format = format; 2301 mutex_unlock(&iommu->lock); 2302 return ret; 2303 } 2304 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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