[akpm-mm:mm-new 57/59] mm/zblock.h:24:2: warning: This PAGE_SIZE is not quite supported yet

[akpm-mm:mm-new 57/59] mm/zblock.h:24:2: warning: This PAGE_SIZE is not quite supported yet

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head:   574966cc970ddc4ec6fb435bbbca9804d92e4953
commit: 8666580be1b209caae87288805cda74dc347440a [57/59] mm-zblock-avoid-failing-the-build-fix
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20250605/202506051739.ZMRkokhj-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250605/202506051739.ZMRkokhj-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/oe-kbuild-all/202506051739.ZMRkokhj-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from mm/zblock.c:28:
>> mm/zblock.h:24:2: warning: This PAGE_SIZE is not quite supported yet [-W#warnings]
      24 | #warning This PAGE_SIZE is not quite supported yet
         |  ^
   1 warning generated.


vim +24 mm/zblock.h

    16	
    17	#if PAGE_SIZE == 0x1000
    18	/* max 128 slots per block, max table size 32 */
    19	#define SLOT_BITS 7
    20	#elif PAGE_SIZE == 0x4000
    21	/* max 256 slots per block, max table size 64 */
    22	#define SLOT_BITS 8
    23	#else
  > 24	#warning This PAGE_SIZE is not quite supported yet
    25	#define SLOT_BITS 8
    26	#endif
    27	

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