[willy-pagecache:headers 1/7] arch/xtensa/kernel/hibernate.c:9:57: error: '__nosave_begin' undeclared; did you mean 'nosave_begin_pfn'?

tree:   git://git.infradead.org/users/willy/pagecache headers
head:   5a75fff46226e59e4c4d87c36f7de79ec4cabdb4
commit: fe4eb6e120822a6de3c06fbe07bc359b78dd3bda [1/7] headers: Remove swap.h from suspend.h
config: xtensa-randconfig-001-20260813 (https://download.01.org/0day-ci/archive/20260813/[email protected]/config)
compiler: xtensa-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260813/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   In file included from include/asm-generic/memory_model.h:5,
                    from arch/xtensa/include/asm/page.h:176,
                    from include/linux/mm_types_task.h:14,
                    from include/linux/mm_types.h:5,
                    from include/linux/mmzone.h:22,
                    from include/linux/gfp.h:7,
                    from include/linux/mm.h:8,
                    from arch/xtensa/kernel/hibernate.c:3:
   arch/xtensa/kernel/hibernate.c: In function 'pfn_is_nosave':
>> arch/xtensa/kernel/hibernate.c:9:57: error: '__nosave_begin' undeclared (first use in this function); did you mean 'nosave_begin_pfn'?
       9 |         unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
         |                                                         ^~~~~~~~~~~~~~
   include/linux/pfn.h:11:27: note: in definition of macro 'PFN_DOWN'
      11 | #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
         |                           ^
   arch/xtensa/kernel/hibernate.c:9:51: note: in expansion of macro '__pa'
       9 |         unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
         |                                                   ^~~~
   arch/xtensa/kernel/hibernate.c:9:57: note: each undeclared identifier is reported only once for each function it appears in
       9 |         unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
         |                                                         ^~~~~~~~~~~~~~
   include/linux/pfn.h:11:27: note: in definition of macro 'PFN_DOWN'
      11 | #define PFN_DOWN(x)     ((x) >> PAGE_SHIFT)
         |                           ^
   arch/xtensa/kernel/hibernate.c:9:51: note: in expansion of macro '__pa'
       9 |         unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
         |                                                   ^~~~
>> arch/xtensa/kernel/hibernate.c:10:53: error: '__nosave_end' undeclared (first use in this function)
      10 |         unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
         |                                                     ^~~~~~~~~~~~
   arch/xtensa/kernel/hibernate.c:10:40: note: in expansion of macro 'PFN_UP'
      10 |         unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
         |                                        ^~~~~~
   arch/xtensa/kernel/hibernate.c:10:47: note: in expansion of macro '__pa'
      10 |         unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
         |                                               ^~~~


vim +9 arch/xtensa/kernel/hibernate.c

733f5c28e59ef2 Max Filippov 2022-04-20   6  
733f5c28e59ef2 Max Filippov 2022-04-20   7  int pfn_is_nosave(unsigned long pfn)
733f5c28e59ef2 Max Filippov 2022-04-20   8  {
733f5c28e59ef2 Max Filippov 2022-04-20  @9  	unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
733f5c28e59ef2 Max Filippov 2022-04-20 @10  	unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
733f5c28e59ef2 Max Filippov 2022-04-20  11  
733f5c28e59ef2 Max Filippov 2022-04-20  12  	return	(pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
733f5c28e59ef2 Max Filippov 2022-04-20  13  }
733f5c28e59ef2 Max Filippov 2022-04-20  14  

:::::: The code at line 9 was first introduced by commit
:::::: 733f5c28e59ef23fef9e0b64d79df24c2a4eed2b xtensa: add hibernation support

:::::: TO: Max Filippov <[email protected]>
:::::: CC: Max Filippov <[email protected]>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki