Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _X86_64_PAGE_H |
2 | #define _X86_64_PAGE_H | |
3 | ||
9d291e78 | 4 | #include <asm/const.h> |
1da177e4 LT |
5 | |
6 | /* PAGE_SHIFT determines the page size */ | |
7 | #define PAGE_SHIFT 12 | |
9d291e78 | 8 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
1da177e4 | 9 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
6b75aeed | 10 | #define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK) |
1da177e4 LT |
11 | |
12 | #define THREAD_ORDER 1 | |
b556b35e | 13 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) |
1da177e4 LT |
14 | #define CURRENT_MASK (~(THREAD_SIZE-1)) |
15 | ||
b556b35e JB |
16 | #define EXCEPTION_STACK_ORDER 0 |
17 | #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) | |
18 | ||
a4045dff | 19 | #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) |
b556b35e JB |
20 | #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) |
21 | ||
22 | #define IRQSTACK_ORDER 2 | |
23 | #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER) | |
24 | ||
5f8efbb9 AK |
25 | #define STACKFAULT_STACK 1 |
26 | #define DOUBLEFAULT_STACK 2 | |
27 | #define NMI_STACK 3 | |
28 | #define DEBUG_STACK 4 | |
29 | #define MCE_STACK 5 | |
30 | #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ | |
31 | ||
1da177e4 | 32 | #define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1)) |
9d291e78 | 33 | #define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT) |
1da177e4 LT |
34 | |
35 | #define HPAGE_SHIFT PMD_SHIFT | |
9d291e78 | 36 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
1da177e4 LT |
37 | #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |
38 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) | |
39 | ||
40 | #ifdef __KERNEL__ | |
41 | #ifndef __ASSEMBLY__ | |
42 | ||
b9aac10d AK |
43 | extern unsigned long end_pfn; |
44 | ||
1da177e4 LT |
45 | void clear_page(void *); |
46 | void copy_page(void *, void *); | |
47 | ||
48 | #define clear_user_page(page, vaddr, pg) clear_page(page) | |
49 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | |
50 | ||
51 | #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) | |
52 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE | |
53 | /* | |
54 | * These are used to make use of C type-checking.. | |
55 | */ | |
56 | typedef struct { unsigned long pte; } pte_t; | |
57 | typedef struct { unsigned long pmd; } pmd_t; | |
58 | typedef struct { unsigned long pud; } pud_t; | |
59 | typedef struct { unsigned long pgd; } pgd_t; | |
60 | #define PTE_MASK PHYSICAL_PAGE_MASK | |
61 | ||
62 | typedef struct { unsigned long pgprot; } pgprot_t; | |
63 | ||
1ab60e0f VG |
64 | extern unsigned long phys_base; |
65 | ||
1da177e4 LT |
66 | #define pte_val(x) ((x).pte) |
67 | #define pmd_val(x) ((x).pmd) | |
68 | #define pud_val(x) ((x).pud) | |
69 | #define pgd_val(x) ((x).pgd) | |
70 | #define pgprot_val(x) ((x).pgprot) | |
71 | ||
72 | #define __pte(x) ((pte_t) { (x) } ) | |
73 | #define __pmd(x) ((pmd_t) { (x) } ) | |
74 | #define __pud(x) ((pud_t) { (x) } ) | |
75 | #define __pgd(x) ((pgd_t) { (x) } ) | |
76 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
77 | ||
9d291e78 | 78 | #endif /* !__ASSEMBLY__ */ |
1da177e4 | 79 | |
d0537508 EB |
80 | #define __PHYSICAL_START CONFIG_PHYSICAL_START |
81 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | |
1da177e4 LT |
82 | #define __START_KERNEL_map 0xffffffff80000000 |
83 | #define __PAGE_OFFSET 0xffff810000000000 | |
1da177e4 LT |
84 | |
85 | /* to align the pointer to the (next) page boundary */ | |
86 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
87 | ||
88 | /* See Documentation/x86_64/mm.txt for a description of the memory map. */ | |
89 | #define __PHYSICAL_MASK_SHIFT 46 | |
9d291e78 | 90 | #define __PHYSICAL_MASK ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1) |
1da177e4 | 91 | #define __VIRTUAL_MASK_SHIFT 48 |
9d291e78 | 92 | #define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1) |
1da177e4 | 93 | |
9d291e78 VG |
94 | #define KERNEL_TEXT_SIZE (40*1024*1024) |
95 | #define KERNEL_TEXT_START 0xffffffff80000000 | |
1da177e4 LT |
96 | |
97 | #ifndef __ASSEMBLY__ | |
98 | ||
99 | #include <asm/bug.h> | |
100 | ||
1da177e4 LT |
101 | #endif /* __ASSEMBLY__ */ |
102 | ||
9d291e78 | 103 | #define PAGE_OFFSET __PAGE_OFFSET |
1da177e4 LT |
104 | |
105 | /* Note: __pa(&symbol_visible_to_c) should be always replaced with __pa_symbol. | |
1ab60e0f | 106 | Otherwise you risk miscompilation. */ |
0dbf7028 | 107 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) |
1da177e4 LT |
108 | /* __pa_symbol should be used for C visible symbols. |
109 | This seems to be the official gcc blessed way to do such arithmetic. */ | |
110 | #define __pa_symbol(x) \ | |
111 | ({unsigned long v; \ | |
112 | asm("" : "=r" (v) : "0" (x)); \ | |
1ab60e0f | 113 | ((v - __START_KERNEL_map) + phys_base); }) |
1da177e4 LT |
114 | |
115 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) | |
2b97690f | 116 | #ifdef CONFIG_FLATMEM |
b9aac10d | 117 | #define pfn_valid(pfn) ((pfn) < end_pfn) |
1da177e4 LT |
118 | #endif |
119 | ||
120 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | |
121 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
122 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
123 | ||
124 | #define VM_DATA_DEFAULT_FLAGS \ | |
125 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ | |
126 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
127 | ||
128 | #define __HAVE_ARCH_GATE_AREA 1 | |
129 | ||
dc8ecb43 | 130 | #include <asm-generic/memory_model.h> |
fd4fd5aa SR |
131 | #include <asm-generic/page.h> |
132 | ||
cd469e0c DW |
133 | #endif /* __KERNEL__ */ |
134 | ||
1da177e4 | 135 | #endif /* _X86_64_PAGE_H */ |