[linux-next:master 7971/10444] include/linux/kexec_handover.h:47:41: error: use of undeclared identifier 'HPAGE_PMD_ORDER'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   78bc8af4affb9a732504eb22eeac7d1e50883853
commit: f476132a8999edf2225185652dce98a42347e8c9 [7971/10444] mm/mm_init: don't rely on memblock to get KHO scratch migratetype
config: x86_64-randconfig-001-20260729 (https://download.01.org/0day-ci/archive/20260730/[email protected]/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260730/[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 kernel/liveupdate/kho_block.c:24:
>> include/linux/kexec_handover.h:47:41: error: use of undeclared identifier 'HPAGE_PMD_ORDER'
      47 |         if (kho_scratch_overlap(PFN_PHYS(pfn), pageblock_nr_pages << PAGE_SHIFT))
         |                                                ^~~~~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:75:36: note: expanded from macro 'pageblock_nr_pages'
      75 | #define pageblock_nr_pages      (1UL << pageblock_order)
         |                                         ^~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:66:46: note: expanded from macro 'pageblock_order'
      66 | #define pageblock_order         MIN_T(unsigned int, HPAGE_PMD_ORDER, PAGE_BLOCK_MAX_ORDER)
         |                                                     ^~~~~~~~~~~~~~~
   In file included from kernel/liveupdate/kho_block.c:24:
>> include/linux/kexec_handover.h:47:41: error: use of undeclared identifier 'HPAGE_PMD_ORDER'
      47 |         if (kho_scratch_overlap(PFN_PHYS(pfn), pageblock_nr_pages << PAGE_SHIFT))
         |                                                ^~~~~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:75:36: note: expanded from macro 'pageblock_nr_pages'
      75 | #define pageblock_nr_pages      (1UL << pageblock_order)
         |                                         ^~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:66:46: note: expanded from macro 'pageblock_order'
      66 | #define pageblock_order         MIN_T(unsigned int, HPAGE_PMD_ORDER, PAGE_BLOCK_MAX_ORDER)
         |                                                     ^~~~~~~~~~~~~~~
   2 errors generated.
--
   In file included from kernel/liveupdate/luo_flb.c:45:
>> include/linux/kexec_handover.h:47:41: error: use of undeclared identifier 'HPAGE_PMD_ORDER'
      47 |         if (kho_scratch_overlap(PFN_PHYS(pfn), pageblock_nr_pages << PAGE_SHIFT))
         |                                                ^~~~~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:75:36: note: expanded from macro 'pageblock_nr_pages'
      75 | #define pageblock_nr_pages      (1UL << pageblock_order)
         |                                         ^~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:66:46: note: expanded from macro 'pageblock_order'
      66 | #define pageblock_order         MIN_T(unsigned int, HPAGE_PMD_ORDER, PAGE_BLOCK_MAX_ORDER)
         |                                                     ^~~~~~~~~~~~~~~
   In file included from kernel/liveupdate/luo_flb.c:45:
>> include/linux/kexec_handover.h:47:41: error: use of undeclared identifier 'HPAGE_PMD_ORDER'
      47 |         if (kho_scratch_overlap(PFN_PHYS(pfn), pageblock_nr_pages << PAGE_SHIFT))
         |                                                ^~~~~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:75:36: note: expanded from macro 'pageblock_nr_pages'
      75 | #define pageblock_nr_pages      (1UL << pageblock_order)
         |                                         ^~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:66:46: note: expanded from macro 'pageblock_order'
      66 | #define pageblock_order         MIN_T(unsigned int, HPAGE_PMD_ORDER, PAGE_BLOCK_MAX_ORDER)
         |                                                     ^~~~~~~~~~~~~~~
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:
   In file included from include/linux/elf.h:6:
   In file included from arch/x86/include/asm/elf.h:10:
   In file included from arch/x86/include/asm/ia32.h:7:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:5:
   In file included from include/linux/fs/super.h:5:
   In file included from include/linux/fs/super_types.h:13:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      98 |                 return (set->sig[3] | set->sig[2] |
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:
   In file included from include/linux/elf.h:6:
   In file included from arch/x86/include/asm/elf.h:10:
   In file included from arch/x86/include/asm/ia32.h:7:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:5:
   In file included from include/linux/fs/super.h:5:
   In file included from include/linux/fs/super_types.h:13:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      98 |                 return (set->sig[3] | set->sig[2] |
         |                                       ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:
   In file included from include/linux/elf.h:6:
   In file included from arch/x86/include/asm/elf.h:10:
   In file included from arch/x86/include/asm/ia32.h:7:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:5:
   In file included from include/linux/fs/super.h:5:
   In file included from include/linux/fs/super_types.h:13:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      99 |                         set->sig[1] | set->sig[0]) == 0;
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:
   In file included from include/linux/elf.h:6:
   In file included from arch/x86/include/asm/elf.h:10:
   In file included from arch/x86/include/asm/ia32.h:7:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:5:
   In file included from include/linux/fs/super.h:5:
   In file included from include/linux/fs/super_types.h:13:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
     101 |                 return (set->sig[1] | set->sig[0]) == 0;
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:
   In file included from include/linux/elf.h:6:
   In file included from arch/x86/include/asm/elf.h:10:
   In file included from arch/x86/include/asm/ia32.h:7:
   In file included from include/linux/compat.h:17:
   In file included from include/linux/fs.h:5:
   In file included from include/linux/fs/super.h:5:
   In file included from include/linux/fs/super_types.h:13:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     114 |                 return  (set1->sig[3] == set2->sig[3]) &&
         |                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from kernel/liveupdate/luo_flb.c:49:
   In file included from include/linux/module.h:20:


vim +/HPAGE_PMD_ORDER +47 include/linux/kexec_handover.h

    43	
    44	static inline enum migratetype kho_scratch_migratetype(unsigned long pfn,
    45							       enum migratetype mt)
    46	{
  > 47		if (kho_scratch_overlap(PFN_PHYS(pfn), pageblock_nr_pages << PAGE_SHIFT))
    48			return MIGRATE_CMA;
    49		return mt;
    50	}
    51	#else
    52	static inline bool kho_is_enabled(void)
    53	{
    54		return false;
    55	}
    56	

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