aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/sparsemem.h
blob: 48ad807a0b8a80ce49788e49935d081585166009 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
#ifndef _ASM_POWERPC_SPARSEMEM_H
#define _ASM_POWERPC_SPARSEMEM_H 1
#ifdef __KERNEL__

#ifdef CONFIG_SPARSEMEM
/*
 * SECTION_SIZE_BITS		2^N: how big each section will be
 * MAX_PHYSADDR_BITS		2^N: how much physical address space we have
 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
 */
#define SECTION_SIZE_BITS       24

#if defined(CONFIG_PS3_USE_LPAR_ADDR)
#define MAX_PHYSADDR_BITS       47
#define MAX_PHYSMEM_BITS        47
#else
#define MAX_PHYSADDR_BITS       44
#define MAX_PHYSMEM_BITS        44
#endif

#ifdef CONFIG_MEMORY_HOTPLUG
extern void create_section_mapping(unsigned long start, unsigned long end);
#ifdef CONFIG_NUMA
extern int hot_add_scn_to_nid(unsigned long scn_addr);
#else
static inline int hot_add_scn_to_nid(unsigned long scn_addr)
{
	return 0;
}
#endif /* CONFIG_NUMA */
#endif /* CONFIG_MEMORY_HOTPLUG */

#endif /* CONFIG_SPARSEMEM */

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SPARSEMEM_H */