Re: [v1 resend 01/12] mm/zone_device: support large zone device private folios

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "__compiletime_assert_NNN"
:::::: 

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TO: Balbir Singh <balbirs@nvidia.com>
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Hi Balbir,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on akpm-mm/mm-nonmm-unstable shuah-kselftest/next shuah-kselftest/fixes linus/master v6.16-rc4 next-20250704]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Balbir-Singh/mm-zone_device-support-large-zone-device-private-folios/20250704-073807
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250703233511.2028395-2-balbirs%40nvidia.com
patch subject: [v1 resend 01/12] mm/zone_device: support large zone device private folios
:::::: branch date: 17 hours ago
:::::: commit date: 17 hours ago
config: arm64-randconfig-002-20250704 (https://download.01.org/0day-ci/archive/20250705/202507050047.XLLs8aYY-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 61529d9e36fa86782a2458e6bdeedf7f376ef4b5)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250705/202507050047.XLLs8aYY-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202507050047.XLLs8aYY-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/memremap.c:510:33: error: call to '__compiletime_assert_714' declared with 'error' attribute: BUILD_BUG failed
     510 |         WARN_ON_ONCE(order && order != HPAGE_PMD_ORDER);
         |                                        ^
   include/linux/huge_mm.h:114:26: note: expanded from macro 'HPAGE_PMD_ORDER'
     114 | #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
         |                          ^
   include/linux/huge_mm.h:110:28: note: expanded from macro 'HPAGE_PMD_SHIFT'
     110 | #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
         |                            ^
   include/linux/build_bug.h:59:21: note: expanded from macro 'BUILD_BUG'
      59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
         |                     ^
   note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
   include/linux/compiler_types.h:556:2: note: expanded from macro '_compiletime_assert'
     556 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:549:4: note: expanded from macro '__compiletime_assert'
     549 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:16:1: note: expanded from here
      16 | __compiletime_assert_714
         | ^
   1 error generated.


vim +510 mm/memremap.c

75e55d8a107edb Christoph Hellwig 2022-02-16  503  
082c3dc9c91f7e Balbir Singh      2025-07-04  504  void init_zone_device_folio(struct folio *folio, unsigned int order)
ef233450898f88 Alistair Popple   2022-09-28  505  {
082c3dc9c91f7e Balbir Singh      2025-07-04  506  	struct page *page = folio_page(folio, 0);
082c3dc9c91f7e Balbir Singh      2025-07-04  507  
082c3dc9c91f7e Balbir Singh      2025-07-04  508  	VM_BUG_ON(order > MAX_ORDER_NR_PAGES);
082c3dc9c91f7e Balbir Singh      2025-07-04  509  
082c3dc9c91f7e Balbir Singh      2025-07-04 @510  	WARN_ON_ONCE(order && order != HPAGE_PMD_ORDER);

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