ia64/linux-2.6.18-xen.hg

view include/asm-v850/page.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 3e8752eb6d9c
children
line source
1 /*
2 * include/asm-v850/page.h -- VM ops
3 *
4 * Copyright (C) 2001,02,03,05 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03,05 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
14 #ifndef __V850_PAGE_H__
15 #define __V850_PAGE_H__
17 #ifdef __KERNEL__
19 #include <asm/machdep.h>
22 #define PAGE_SHIFT 12
23 #define PAGE_SIZE (1UL << PAGE_SHIFT)
24 #define PAGE_MASK (~(PAGE_SIZE-1))
27 /*
28 * PAGE_OFFSET -- the first address of the first page of memory. For archs with
29 * no MMU this corresponds to the first free page in physical memory (aligned
30 * on a page boundary).
31 */
32 #ifndef PAGE_OFFSET
33 #define PAGE_OFFSET 0x0000000
34 #endif
37 #ifndef __ASSEMBLY__
39 #define STRICT_MM_TYPECHECKS
41 #define clear_page(page) memset ((void *)(page), 0, PAGE_SIZE)
42 #define copy_page(to, from) memcpy ((void *)(to), (void *)from, PAGE_SIZE)
44 #define clear_user_page(addr, vaddr, page) \
45 do { clear_page(addr); \
46 flush_dcache_page(page); \
47 } while (0)
48 #define copy_user_page(to, from, vaddr, page) \
49 do { copy_page(to, from); \
50 flush_dcache_page(page); \
51 } while (0)
53 #ifdef STRICT_MM_TYPECHECKS
54 /*
55 * These are used to make use of C type-checking..
56 */
58 typedef struct { unsigned long pte; } pte_t;
59 typedef struct { unsigned long pmd; } pmd_t;
60 typedef struct { unsigned long pgd; } pgd_t;
61 typedef struct { unsigned long pgprot; } pgprot_t;
63 #define pte_val(x) ((x).pte)
64 #define pmd_val(x) ((x).pmd)
65 #define pgd_val(x) ((x).pgd)
66 #define pgprot_val(x) ((x).pgprot)
68 #define __pte(x) ((pte_t) { (x) } )
69 #define __pmd(x) ((pmd_t) { (x) } )
70 #define __pgd(x) ((pgd_t) { (x) } )
71 #define __pgprot(x) ((pgprot_t) { (x) } )
73 #else /* !STRICT_MM_TYPECHECKS */
74 /*
75 * .. while these make it easier on the compiler
76 */
78 typedef unsigned long pte_t;
79 typedef unsigned long pmd_t;
80 typedef unsigned long pgd_t;
81 typedef unsigned long pgprot_t;
83 #define pte_val(x) (x)
84 #define pmd_val(x) (x)
85 #define pgd_val(x) (x)
86 #define pgprot_val(x) (x)
88 #define __pte(x) (x)
89 #define __pmd(x) (x)
90 #define __pgd(x) (x)
91 #define __pgprot(x) (x)
93 #endif /* STRICT_MM_TYPECHECKS */
95 #endif /* !__ASSEMBLY__ */
98 /* to align the pointer to the (next) page boundary */
99 #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
102 /* No current v850 processor has virtual memory. */
103 #define __virt_to_phys(addr) (addr)
104 #define __phys_to_virt(addr) (addr)
106 #define virt_to_pfn(kaddr) (__virt_to_phys (kaddr) >> PAGE_SHIFT)
107 #define pfn_to_virt(pfn) __phys_to_virt ((pfn) << PAGE_SHIFT)
109 #define MAP_NR(kaddr) \
110 (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT)
111 #define virt_to_page(kaddr) (mem_map + MAP_NR (kaddr))
112 #define page_to_virt(page) \
113 ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
115 #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
116 #define pfn_valid(pfn) ((pfn) < max_mapnr)
118 #define virt_addr_valid(kaddr) \
119 (((void *)(kaddr) >= (void *)PAGE_OFFSET) && MAP_NR (kaddr) < max_mapnr)
122 #define __pa(x) __virt_to_phys ((unsigned long)(x))
123 #define __va(x) ((void *)__phys_to_virt ((unsigned long)(x)))
126 #include <asm-generic/memory_model.h>
127 #include <asm-generic/page.h>
129 #endif /* KERNEL */
131 #endif /* __V850_PAGE_H__ */