[PATCH v3 3/4] fbdev/deferred-io: Support contiguous kernel memory framebuffers

[kernel test robot]

Hi,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on linus/master v6.15-rc7 next-20250523]
[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/mhkelley58-gmail-com/mm-Export-vmf_insert_mixed_mkwrite/20250524-001707
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250523161522.409504-4-mhklinux%40outlook.com
patch subject: [PATCH v3 3/4] fbdev/deferred-io: Support contiguous kernel memory framebuffers
config: arm-randconfig-001-20250524 (https://download.01.org/0day-ci/archive/20250524/202505241553.VSXoFOvX-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250524/202505241553.VSXoFOvX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505241553.VSXoFOvX-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "vmf_insert_pfn" [drivers/video/fbdev/core/fb.ko] undefined!
>> ERROR: modpost: "vmf_insert_mixed_mkwrite" [drivers/video/fbdev/core/fb.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki