Hi Vincenzo,

I love your patch! Yet something to improve:

[auto build test ERROR on arm/for-next]
[also build test ERROR on soc/for-next kvmarm/next linus/master v5.12-rc6 
next-20210408]
[cannot apply to arm64/for-next/core xlnx/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-mte-Move-MTE-TCF0-check-in-entry-common/20210409-182215
base:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
config: arm64-allnoconfig (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/59174442d4b85039bfec7ede4825ff2b5c0b4331
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Vincenzo-Frascino/arm64-mte-Move-MTE-TCF0-check-in-entry-common/20210409-182215
        git checkout 59174442d4b85039bfec7ede4825ff2b5c0b4331
        # 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 <l...@intel.com>

All error/warnings (new ones prefixed by >>):

   In file included from arch/arm64/include/asm/pgtable.h:12,
                    from include/linux/pgtable.h:6,
                    from include/linux/mm.h:33,
                    from arch/arm64/kernel/asm-offsets.c:12:
>> arch/arm64/include/asm/mte.h:89:1: warning: ignoring attribute 'gnu_inline' 
>> because it conflicts with attribute 'noinline' [-Wattributes]
      89 | {
         | ^
   arch/arm64/include/asm/mte.h:34:14: note: previous declaration here
      34 | void noinstr check_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
>> arch/arm64/include/asm/mte.h:88:20: error: static declaration of 
>> 'check_mte_async_tcf0' follows non-static declaration
      88 | static inline void check_mte_async_tcf0(void)
         |                    ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:34:14: note: previous declaration of 
'check_mte_async_tcf0' was here
      34 | void noinstr check_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:92:1: warning: ignoring attribute 'gnu_inline' 
because it conflicts with attribute 'noinline' [-Wattributes]
      92 | {
         | ^
   arch/arm64/include/asm/mte.h:35:14: note: previous declaration here
      35 | void noinstr clear_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
>> arch/arm64/include/asm/mte.h:91:20: error: static declaration of 
>> 'clear_mte_async_tcf0' follows non-static declaration
      91 | static inline void clear_mte_async_tcf0(void)
         |                    ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:35:14: note: previous declaration of 
'clear_mte_async_tcf0' was here
      35 | void noinstr clear_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/arm64/include/asm/pgtable.h:12,
                    from include/linux/pgtable.h:6,
                    from include/linux/mm.h:33,
                    from arch/arm64/kernel/asm-offsets.c:12:
>> arch/arm64/include/asm/mte.h:89:1: warning: ignoring attribute 'gnu_inline' 
>> because it conflicts with attribute 'noinline' [-Wattributes]
      89 | {
         | ^
   arch/arm64/include/asm/mte.h:34:14: note: previous declaration here
      34 | void noinstr check_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
>> arch/arm64/include/asm/mte.h:88:20: error: static declaration of 
>> 'check_mte_async_tcf0' follows non-static declaration
      88 | static inline void check_mte_async_tcf0(void)
         |                    ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:34:14: note: previous declaration of 
'check_mte_async_tcf0' was here
      34 | void noinstr check_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:92:1: warning: ignoring attribute 'gnu_inline' 
because it conflicts with attribute 'noinline' [-Wattributes]
      92 | {
         | ^
   arch/arm64/include/asm/mte.h:35:14: note: previous declaration here
      35 | void noinstr clear_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
>> arch/arm64/include/asm/mte.h:91:20: error: static declaration of 
>> 'clear_mte_async_tcf0' follows non-static declaration
      91 | static inline void clear_mte_async_tcf0(void)
         |                    ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/include/asm/mte.h:35:14: note: previous declaration of 
'clear_mte_async_tcf0' was here
      35 | void noinstr clear_mte_async_tcf0(void);
         |              ^~~~~~~~~~~~~~~~~~~~
   make[2]: *** [scripts/Makefile.build:116: arch/arm64/kernel/asm-offsets.s] 
Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1233: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:215: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/check_mte_async_tcf0 +88 arch/arm64/include/asm/mte.h

    20  
    21  void mte_clear_page_tags(void *addr);
    22  unsigned long mte_copy_tags_from_user(void *to, const void __user *from,
    23                                        unsigned long n);
    24  unsigned long mte_copy_tags_to_user(void __user *to, void *from,
    25                                      unsigned long n);
    26  int mte_save_tags(struct page *page);
    27  void mte_save_page_tags(const void *page_addr, void *tag_storage);
    28  bool mte_restore_tags(swp_entry_t entry, struct page *page);
    29  void mte_restore_page_tags(void *page_addr, const void *tag_storage);
    30  void mte_invalidate_tags(int type, pgoff_t offset);
    31  void mte_invalidate_tags_area(int type);
    32  void *mte_allocate_tag_storage(void);
    33  void mte_free_tag_storage(char *storage);
  > 34  void noinstr check_mte_async_tcf0(void);
    35  void noinstr clear_mte_async_tcf0(void);
    36  
    37  #ifdef CONFIG_ARM64_MTE
    38  
    39  /* track which pages have valid allocation tags */
    40  #define PG_mte_tagged   PG_arch_2
    41  
    42  void mte_sync_tags(pte_t *ptep, pte_t pte);
    43  void mte_copy_page_tags(void *kto, const void *kfrom);
    44  void flush_mte_state(void);
    45  void mte_thread_switch(struct task_struct *next);
    46  void mte_suspend_exit(void);
    47  long set_mte_ctrl(struct task_struct *task, unsigned long arg);
    48  long get_mte_ctrl(struct task_struct *task);
    49  int mte_ptrace_copy_tags(struct task_struct *child, long request,
    50                           unsigned long addr, unsigned long data);
    51  
    52  void mte_assign_mem_tag_range(void *addr, size_t size);
    53  
    54  #else /* CONFIG_ARM64_MTE */
    55  
    56  /* unused if !CONFIG_ARM64_MTE, silence the compiler */
    57  #define PG_mte_tagged   0
    58  
    59  static inline void mte_sync_tags(pte_t *ptep, pte_t pte)
    60  {
    61  }
    62  static inline void mte_copy_page_tags(void *kto, const void *kfrom)
    63  {
    64  }
    65  static inline void flush_mte_state(void)
    66  {
    67  }
    68  static inline void mte_thread_switch(struct task_struct *next)
    69  {
    70  }
    71  static inline void mte_suspend_exit(void)
    72  {
    73  }
    74  static inline long set_mte_ctrl(struct task_struct *task, unsigned long 
arg)
    75  {
    76          return 0;
    77  }
    78  static inline long get_mte_ctrl(struct task_struct *task)
    79  {
    80          return 0;
    81  }
    82  static inline int mte_ptrace_copy_tags(struct task_struct *child,
    83                                         long request, unsigned long addr,
    84                                         unsigned long data)
    85  {
    86          return -EIO;
    87  }
  > 88  static inline void check_mte_async_tcf0(void)
  > 89  {
    90  }
  > 91  static inline void clear_mte_async_tcf0(void)
    92  {
    93  }
    94  

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

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