[android-goldfish:android-5.4 1/1] microblaze-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.c:279: undefined reference to `vmf_insert_pfn'

[android-goldfish:android-5.4 1/1] microblaze-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.c:279: undefined reference to `vmf_insert_pfn'

[kernel test robot]

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tree:   https://android.googlesource.com/kernel/goldfish android-5.4
head:   7af30e526c2120f1f6ba4b5b19d683697e2c2833
commit: 7af30e526c2120f1f6ba4b5b19d683697e2c2833 [1/1] ANDROID: GKI: Add DRM_TTM config to GKI
config: microblaze-randconfig-c003-20200826 (attached as .config)
compiler: microblaze-linux-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
        git checkout 7af30e526c2120f1f6ba4b5b19d683697e2c2833
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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 >>):

   microblaze-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.o: in function `ttm_bo_vm_fault':
   drivers/gpu/drm/ttm/ttm_bo_vm.c:276: undefined reference to `vmf_insert_mixed'
>> microblaze-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.c:279: undefined reference to `vmf_insert_pfn'

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

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