Hi "Christian,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20201117]
[cannot apply to linus/master v5.10-rc4 v5.10-rc3 v5.10-rc2 v5.10-rc4]
[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]

url:    https://github.com/0day-ci/linux/commits/Christian-K-nig/drm-ttm-rework-ttm_tt-page-limit/20201117-220814
base:    7c8ca8129ee9724cb1527895fe6dec942ef07f19
config: arm-allyesconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
        # https://github.com/0day-ci/linux/commit/ed6ebc71bdbee87b189c3127e4e6a840776af4e2
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Christian-K-nig/drm-ttm-rework-ttm_tt-page-limit/20201117-220814
        git checkout ed6ebc71bdbee87b189c3127e4e6a840776af4e2
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: drivers/gpu/drm/ttm/ttm_memory.o: in function `ttm_mem_global_init':
>> (.text+0x14f4): undefined reference to `__aeabi_uldivmod'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org