Hi Jessica,

I love your patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on v4.19 next-20181019]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Jessica-Yu/arm64-module-use-mod-klp_info-section-header-information/20181024-023709
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: x86_64-randconfig-x002-201842 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   kernel/module.c: In function 'post_relocation':
>> kernel/module.c:3369:30: warning: passing argument 2 of 'copy_module_elf' 
>> discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
      err = copy_module_elf(mod, info);
                                 ^~~~
   kernel/module.c:2103:12: note: expected 'struct load_info *' but argument is 
of type 'const struct load_info *'
    static int copy_module_elf(struct module *mod, struct load_info *info)
               ^~~~~~~~~~~~~~~

vim +3369 kernel/module.c

  3353  
  3354  static int post_relocation(struct module *mod, const struct load_info 
*info)
  3355  {
  3356          int err;
  3357  
  3358          /* Sort exception table now relocations are done. */
  3359          sort_extable(mod->extable, mod->extable + mod->num_exentries);
  3360  
  3361          /* Copy relocated percpu area over. */
  3362          percpu_modcopy(mod, (void 
*)info->sechdrs[info->index.pcpu].sh_addr,
  3363                         info->sechdrs[info->index.pcpu].sh_size);
  3364  
  3365          /* Setup kallsyms-specific fields. */
  3366          add_kallsyms(mod, info);
  3367  
  3368          if (is_livepatch_module(mod)) {
> 3369                  err = copy_module_elf(mod, info);
  3370                  if (err < 0)
  3371                          return err;
  3372          }
  3373  
  3374          /* Arch-specific module finalizing. */
  3375          err = module_finalize(info->hdr, info->sechdrs, mod);
  3376          if (err < 0)
  3377                  free_module_elf(mod);
  3378  
  3379          return err;
  3380  }
  3381  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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