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 */ 32