fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / e820_64.h
blob3486e701bd8656f5e5a782cf60b892e656509756
1 /*
2 * structures and definitions for the int 15, ax=e820 memory map
3 * scheme.
5 * In a nutshell, setup.S populates a scratch table in the
6 * empty_zero_block that contains a list of usable address/size
7 * duples. setup.c, this information is transferred into the e820map,
8 * and in init.c/numa.c, that new information is used to mark pages
9 * reserved or not.
11 #ifndef __E820_HEADER
12 #define __E820_HEADER
14 #define E820MAP 0x2d0 /* our map */
15 #define E820MAX 128 /* number of entries in E820MAP */
16 #define E820NR 0x1e8 /* # entries in E820MAP */
18 #define E820_RAM 1
19 #define E820_RESERVED 2
20 #define E820_ACPI 3
21 #define E820_NVS 4
23 #ifndef __ASSEMBLY__
24 struct e820entry {
25 u64 addr; /* start of memory segment */
26 u64 size; /* size of memory segment */
27 u32 type; /* type of memory segment */
28 } __attribute__((packed));
30 struct e820map {
31 u32 nr_map;
32 struct e820entry map[E820MAX];
35 extern unsigned long find_e820_area(unsigned long start, unsigned long end,
36 unsigned size);
37 extern void add_memory_region(unsigned long start, unsigned long size,
38 int type);
39 extern void setup_memory_region(void);
40 extern void contig_e820_setup(void);
41 extern unsigned long e820_end_of_ram(void);
42 extern void e820_reserve_resources(void);
43 extern void e820_mark_nosave_regions(void);
44 extern void e820_print_map(char *who);
45 extern int e820_any_mapped(unsigned long start, unsigned long end, unsigned type);
46 extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type);
47 extern unsigned long e820_hole_size(unsigned long start, unsigned long end);
49 extern void e820_setup_gap(void);
50 extern void e820_register_active_regions(int nid,
51 unsigned long start_pfn, unsigned long end_pfn);
53 extern void finish_e820_parsing(void);
55 extern struct e820map e820;
57 extern unsigned ebda_addr, ebda_size;
58 extern unsigned long nodemap_addr, nodemap_size;
59 #endif/*!__ASSEMBLY__*/
61 #endif/*__E820_HEADER*/