tree: https://github.com/awilliam/linux-vfio.git next head: 2099363255f123f6c9abcfa8531bbec65a8f1820 commit: 67247289688d49a610a956c23c4ff032f0281845 [19/27] vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO regions config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/awilliam/linux-vfio/commit/67247289688d49a610a956c23c4... git remote add vfio https://github.com/awilliam/linux-vfio.git git fetch --no-tags vfio next git checkout 67247289688d49a610a956c23c4ff032f0281845 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_mmap_mmio': >> drivers/vfio/fsl-mc/vfio_fsl_mc.c:189:36: error: 'FSL_MC_REGION_CACHEABLE' undeclared (first use in this function) 189 | region_cacheable = (region.type & FSL_MC_REGION_CACHEABLE) && | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/vfio/fsl-mc/vfio_fsl_mc.c:189:36: note: each undeclared identifier is reported only once for each function it appears in >> drivers/vfio/fsl-mc/vfio_fsl_mc.c:190:22: error: 'FSL_MC_REGION_SHAREABLE' undeclared (first use in this function) 190 | (region.type & FSL_MC_REGION_SHAREABLE); | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_bus_notifier': drivers/vfio/fsl-mc/vfio_fsl_mc.c:256:9: error: 'struct fsl_mc_device' has no member named 'driver_override' 256 | mc_dev->driver_override = kasprintf(GFP_KERNEL, "%s", | ^~ drivers/vfio/fsl-mc/vfio_fsl_mc.c:258:14: error: 'struct fsl_mc_device' has no member named 'driver_override' 258 | if (!mc_dev->driver_override) | ^~ drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_init_device': drivers/vfio/fsl-mc/vfio_fsl_mc.c:295:8: error: implicit declaration of function 'dprc_setup' [-Werror=implicit-function-declaration] 295 | ret = dprc_setup(mc_dev); | ^~~~~~~~~~ drivers/vfio/fsl-mc/vfio_fsl_mc.c:301:8: error: implicit declaration of function 'dprc_scan_container' [-Werror=implicit-function-declaration] 301 | ret = dprc_scan_container(mc_dev, false); | ^~~~~~~~~~~~~~~~~~~ drivers/vfio/fsl-mc/vfio_fsl_mc.c:310:2: error: implicit declaration of function 'dprc_remove_devices' [-Werror=implicit-function-declaration] 310 | dprc_remove_devices(mc_dev, NULL, 0); | ^~~~~~~~~~~~~~~~~~~ drivers/vfio/fsl-mc/vfio_fsl_mc.c:311:2: error: implicit declaration of function 'dprc_cleanup' [-Werror=implicit-function-declaration] 311 | dprc_cleanup(mc_dev); | ^~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/FSL_MC_REGION_CACHEABLE +189 drivers/vfio/fsl-mc/vfio_fsl_mc.c 174 175 static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region, 176 struct vm_area_struct *vma) 177 { 178 u64 size = vma->vm_end - vma->vm_start; 179 u64 pgoff, base; 180 u8 region_cacheable; 181 182 pgoff = vma->vm_pgoff & 183 ((1U << (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT)) - 1); 184 base = pgoff << PAGE_SHIFT; 185 186 if (region.size < PAGE_SIZE || base + size > region.size) 187 return -EINVAL; 188 > 189 region_cacheable = (region.type & FSL_MC_REGION_CACHEABLE) && > 190 (region.type & FSL_MC_REGION_SHAREABLE); 191 if (!region_cacheable) 192 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 193 194 vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff; 195 196 return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, 197 size, vma->vm_page_prot); 198 } 199 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org