ia64/linux-2.6.18-xen.hg

view include/asm-m68k/virtconvert.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 831230e53067
children
line source
1 #ifndef __VIRT_CONVERT__
2 #define __VIRT_CONVERT__
4 /*
5 * Macros used for converting between virtual and physical mappings.
6 */
8 #ifdef __KERNEL__
10 #include <linux/compiler.h>
11 #include <asm/setup.h>
12 #include <asm/page.h>
14 #ifdef CONFIG_AMIGA
15 #include <asm/amigahw.h>
16 #endif
18 /*
19 * Change virtual addresses to physical addresses and vv.
20 */
21 #ifndef CONFIG_SUN3
22 extern unsigned long mm_vtop(unsigned long addr) __attribute_const__;
23 extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
24 #else
25 static inline unsigned long mm_vtop(unsigned long vaddr)
26 {
27 return __pa(vaddr);
28 }
30 static inline unsigned long mm_ptov(unsigned long paddr)
31 {
32 return (unsigned long)__va(paddr);
33 }
34 #endif
36 #ifdef CONFIG_SINGLE_MEMORY_CHUNK
37 static inline unsigned long virt_to_phys(void *vaddr)
38 {
39 return (unsigned long)vaddr - PAGE_OFFSET + m68k_memory[0].addr;
40 }
42 static inline void * phys_to_virt(unsigned long paddr)
43 {
44 return (void *)(paddr - m68k_memory[0].addr + PAGE_OFFSET);
45 }
46 #else
47 static inline unsigned long virt_to_phys(void *address)
48 {
49 return mm_vtop((unsigned long)address);
50 }
52 static inline void *phys_to_virt(unsigned long address)
53 {
54 return (void *) mm_ptov(address);
55 }
56 #endif
58 /* Permanent address of a page. */
59 #define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
60 #define page_to_phys(page) virt_to_phys((void *)__page_address(page))
62 /*
63 * IO bus memory addresses are 1:1 with the physical address,
64 * except on the PCI bus of the Hades.
65 */
66 #ifdef CONFIG_HADES
67 #define virt_to_bus(a) (virt_to_phys(a) + (MACH_IS_HADES ? 0x80000000 : 0))
68 #define bus_to_virt(a) (phys_to_virt((a) - (MACH_IS_HADES ? 0x80000000 : 0)))
69 #else
70 #define virt_to_bus virt_to_phys
71 #define bus_to_virt phys_to_virt
72 #endif
74 #endif
75 #endif