ERROR: "min_low_pfn" undefined!

[kernel test robot]

Hi Stefan,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   45a5ac7a5cc3c71739d240c422c3818a5bc97fc4
commit: a62a8ef9d97da23762a588592c8b8eb50a8deb6a virtio-fs: add virtiofs filesystem
date:   10 months ago
config: microblaze-randconfig-s031-20200705 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-3-gfa153962-dirty
        git checkout a62a8ef9d97da23762a588592c8b8eb50a8deb6a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=microblaze 

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

All errors (new ones prefixed by >>):

   ERROR: "min_low_pfn" [net/rxrpc/rxrpc.ko] undefined!
>> ERROR: "min_low_pfn" [net/9p/9pnet_virtio.ko] undefined!
   ERROR: "min_low_pfn" [drivers/md/dm-integrity.ko] undefined!
   ERROR: "min_low_pfn" [drivers/md/dm-crypt.ko] undefined!
   ERROR: "min_low_pfn" [drivers/mtd/nand/raw/nand.ko] undefined!
   ERROR: "min_low_pfn" [drivers/dma/fsl-edma-common.ko] undefined!
   ERROR: "min_low_pfn" [crypto/asymmetric_keys/asym_tpm.ko] undefined!

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

Attachment: .config.gz
Description: application/gzip