arch/loongarch/include/asm/sparsemem.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LOONGARCH_SPARSEMEM_H
   3 #define _LOONGARCH_SPARSEMEM_H
   4
   5 #ifdef CONFIG_SPARSEMEM
   6
   7 /*
   8  * SECTION_SIZE_BITS            2^N: how big each section will be
   9  * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
  10  */
  11 #define SECTION_SIZE_BITS       29 /* 2^29 = Largest Huge Page Size */
  12 #define MAX_PHYSMEM_BITS        48
  13
  14 #ifdef CONFIG_SPARSEMEM_VMEMMAP
  15 #define VMEMMAP_SIZE    (sizeof(struct page) * (1UL << (cpu_pabits + 1 - PAGE_SHIFT)))
  16 #endif
  17
  18 #endif /* CONFIG_SPARSEMEM */
  19
  20 #ifndef VMEMMAP_SIZE
  21 #define VMEMMAP_SIZE    0       /* 1, For FLATMEM; 2, For SPARSEMEM without VMEMMAP. */
  22 #endif
  23
  24 #ifdef CONFIG_MEMORY_HOTPLUG
  25 int memory_add_physaddr_to_nid(u64 addr);
  26 #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
  27 #endif
  28
  29 #define INIT_MEMBLOCK_RESERVED_REGIONS  (INIT_MEMBLOCK_REGIONS + NR_CPUS)
  30
  31 #endif /* _LOONGARCH_SPARSEMEM_H */