Hi Zong,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v5.6-rc5]
[also build test ERROR on next-20200306]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Zong-Li/Support-strict-kernel-memory-permissions-for-security/20200309-172554
base:    2c523b344dfa65a3738e7039832044aa133c75fb
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-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
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>):

>> arch/riscv/mm/init.c:21:10: fatal error: asm/ptdump.h: No such file or directory
    #include <asm/ptdump.h>
             ^~~~~~~~~~~~~~
   compilation terminated.

vim +21 arch/riscv/mm/init.c

    16	
    17	#include <asm/fixmap.h>
    18	#include <asm/tlbflush.h>
    19	#include <asm/sections.h>
    20	#include <asm/pgtable.h>
  > 21	#include <asm/ptdump.h>
    22	#include <asm/io.h>
    23	

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