1#ifndef _I386_SPARSEMEM_H
2#define _I386_SPARSEMEM_H
3#ifdef CONFIG_SPARSEMEM
4
5/*
6 * generic non-linear memory support:
7 *
8 * 1) we will not split memory into more chunks than will fit into the
9 *    flags field of the struct page
10 */
11
12/*
13 * SECTION_SIZE_BITS		2^N: how big each section will be
14 * MAX_PHYSADDR_BITS		2^N: how much physical address space we have
15 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
16 */
17#ifdef CONFIG_X86_PAE
18#define SECTION_SIZE_BITS       30
19#define MAX_PHYSADDR_BITS       36
20#define MAX_PHYSMEM_BITS	36
21#else
22#define SECTION_SIZE_BITS       26
23#define MAX_PHYSADDR_BITS       32
24#define MAX_PHYSMEM_BITS	32
25#endif
26
27#define kern_addr_valid(kaddr)  (0)
28
29#endif /* CONFIG_SPARSEMEM */
30#endif /* _I386_SPARSEMEM_H */
31