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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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#define INIT_MEMBLOCK_RESERVED_REGIONS (INIT_MEMBLOCK_REGIONS + NR_CPUS)
25
26#endif /* _LOONGARCH_SPARSEMEM_H */