fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / e820_32.h
blobcf67dbb1db79a21e8430be37597b3a42196ad948
1 /*
2 * structures and definitions for the int 15, ax=e820 memory map
3 * scheme.
5 * In a nutshell, arch/i386/boot/setup.S populates a scratch table
6 * in the empty_zero_block that contains a list of usable address/size
7 * duples. In arch/i386/kernel/setup.c, this information is
8 * transferred into the e820map, and in arch/i386/mm/init.c, that
9 * new information is used to mark pages reserved or not.
12 #ifndef __E820_HEADER
13 #define __E820_HEADER
15 #define E820MAP 0x2d0 /* our map */
16 #define E820MAX 128 /* number of entries in E820MAP */
17 #define E820NR 0x1e8 /* # entries in E820MAP */
19 #define E820_RAM 1
20 #define E820_RESERVED 2
21 #define E820_ACPI 3
22 #define E820_NVS 4
24 #define HIGH_MEMORY (1024*1024)
26 #ifndef __ASSEMBLY__
28 struct e820entry {
29 u64 addr; /* start of memory segment */
30 u64 size; /* size of memory segment */
31 u32 type; /* type of memory segment */
32 } __attribute__((packed));
34 struct e820map {
35 u32 nr_map;
36 struct e820entry map[E820MAX];
39 extern struct e820map e820;
41 extern int e820_all_mapped(unsigned long start, unsigned long end,
42 unsigned type);
43 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
44 extern void find_max_pfn(void);
45 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
46 extern void e820_register_memory(void);
47 extern void limit_regions(unsigned long long size);
48 extern void print_memory_map(char *who);
50 #if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
51 extern void e820_mark_nosave_regions(void);
52 #else
53 static inline void e820_mark_nosave_regions(void)
56 #endif
58 #endif/*!__ASSEMBLY__*/
60 #endif/*__E820_HEADER*/