arch/ia64/include/asm/sparsemem.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_IA64_SPARSEMEM_H
   3 #define _ASM_IA64_SPARSEMEM_H
   4
   5 #ifdef CONFIG_SPARSEMEM
   6 /*
   7  * SECTION_SIZE_BITS            2^N: how big each section will be
   8  * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
   9  */
  10
  11 #define SECTION_SIZE_BITS       (30)
  12 #define MAX_PHYSMEM_BITS        (50)
  13 #ifdef CONFIG_FORCE_MAX_ZONEORDER
  14 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
  15 #undef SECTION_SIZE_BITS
  16 #define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
  17 #endif
  18 #endif
  19
  20 #endif /* CONFIG_SPARSEMEM */
  21 #endif /* _ASM_IA64_SPARSEMEM_H */