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 25int 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