Hi Vincenzo,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.11-rc2 next-20210104]
[cannot apply to arm64/for-next/core soc/for-next arm/for-next xlnx/master kvmarm/next hnaz-linux-mm/master]
[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/Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210106-200352
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62
config: arm64-randconfig-m031-20210106 (attached as .config)
compiler: aarch64-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
        # https://github.com/0day-ci/linux/commit/f4149cbb992741e9fc73e8d0e787bd34eda7d4a4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210106-200352
        git checkout f4149cbb992741e9fc73e8d0e787bd34eda7d4a4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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 >>):

   aarch64-linux-ld: Unexpected GOT/PLT entries detected!
   aarch64-linux-ld: Unexpected run-time procedure linkages detected!
   aarch64-linux-ld: arch/arm64/kernel/entry-common.o: in function `enter_from_kernel_mode.isra.0':
>> entry-common.c:(.noinstr.text+0x4c): undefined reference to `mte_check_tfsr_el1'
   aarch64-linux-ld: arch/arm64/kernel/entry-common.o: in function `exit_to_kernel_mode':
   entry-common.c:(.noinstr.text+0x2b0): undefined reference to `mte_check_tfsr_el1'
   aarch64-linux-ld: arch/arm64/kernel/entry-common.o: in function `exit_to_user_mode':
   entry-common.c:(.noinstr.text+0x1730): undefined reference to `mte_check_tfsr_el1'

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