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05b79bdc AW |
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 | /* XXX: FIXME -- wli */ | |
28 | #define kern_addr_valid(kaddr) (0) | |
29 | ||
30 | #endif /* CONFIG_SPARSEMEM */ | |
31 | #endif /* _I386_SPARSEMEM_H */ |