tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b86a6a241b7c60ca7a6ca4fb3c0d2aedbbf2c1b6
commit: a0f60f8431999bf57cf53c3b27c47ef156b4fa17 [4714/7050] s390/protvirt: Add sysfs firmware interface for Ultravisor information
config: s390-randconfig-a001-20200308 (attached as .config)
compiler: s390-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout a0f60f8431999bf57cf53c3b27c47ef156b4fa17
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

   arch/s390/kernel/uv.o: In function `uv_query_max_guest_addr':
>> uv.c:(.text+0xc): undefined reference to `uv_info'
   uv.c:(.text+0x40): undefined reference to `uv_info'
   uv.c:(.text+0x72): undefined reference to `uv_info'
   arch/s390/kernel/uv.o: In function `uv_query_max_guest_vms':
   uv.c:(.text+0x8c): undefined reference to `uv_info'
   uv.c:(.text+0xde): undefined reference to `uv_info'
   arch/s390/kernel/uv.o:uv.c:(.text+0x11c): more undefined references to `uv_info' follow

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