ia64/linux-2.6.18-xen.hg

view include/asm-i386/e820.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents c8c9bc0b7e29
children
line source
1 /*
2 * structures and definitions for the int 15, ax=e820 memory map
3 * scheme.
4 *
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.
10 *
11 */
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 /* usable as RAM once ACPI tables have been read */
22 #define E820_NVS 4
24 #define HIGH_MEMORY (1024*1024)
26 #ifndef __ASSEMBLY__
28 struct e820map {
29 int nr_map;
30 struct e820entry {
31 unsigned long long addr; /* start of memory segment */
32 unsigned long long size; /* size of memory segment */
33 unsigned long type; /* type of memory segment */
34 } map[E820MAX];
35 };
37 extern struct e820map e820;
39 extern int e820_all_mapped(unsigned long start, unsigned long end,
40 unsigned type);
41 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
43 #endif/*!__ASSEMBLY__*/
45 #endif/*__E820_HEADER*/