Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _X86_64_PAGE_H |
2 | #define _X86_64_PAGE_H | |
3 | ||
6df95fd7 | 4 | #include <linux/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 | ||
769848c0 MG |
51 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
52 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) | |
1da177e4 LT |
53 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
54 | /* | |
55 | * These are used to make use of C type-checking.. | |
56 | */ | |
57 | typedef struct { unsigned long pte; } pte_t; | |
58 | typedef struct { unsigned long pmd; } pmd_t; | |
59 | typedef struct { unsigned long pud; } pud_t; | |
60 | typedef struct { unsigned long pgd; } pgd_t; | |
61 | #define PTE_MASK PHYSICAL_PAGE_MASK | |
62 | ||
63 | typedef struct { unsigned long pgprot; } pgprot_t; | |
64 | ||
1ab60e0f VG |
65 | extern unsigned long phys_base; |
66 | ||
1da177e4 LT |
67 | #define pte_val(x) ((x).pte) |
68 | #define pmd_val(x) ((x).pmd) | |
69 | #define pud_val(x) ((x).pud) | |
70 | #define pgd_val(x) ((x).pgd) | |
71 | #define pgprot_val(x) ((x).pgprot) | |
72 | ||
73 | #define __pte(x) ((pte_t) { (x) } ) | |
74 | #define __pmd(x) ((pmd_t) { (x) } ) | |
75 | #define __pud(x) ((pud_t) { (x) } ) | |
76 | #define __pgd(x) ((pgd_t) { (x) } ) | |
77 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
78 | ||
9d291e78 | 79 | #endif /* !__ASSEMBLY__ */ |
1da177e4 | 80 | |
d0537508 | 81 | #define __PHYSICAL_START CONFIG_PHYSICAL_START |
6a50a664 | 82 | #define __KERNEL_ALIGN 0x200000 |
63f6564d | 83 | |
069f11f9 VG |
84 | /* |
85 | * Make sure kernel is aligned to 2MB address. Catching it at compile | |
86 | * time is better. Change your config file and compile the kernel | |
87 | * for a 2MB aligned address (CONFIG_PHYSICAL_START) | |
88 | */ | |
89 | #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 | |
90 | #error "CONFIG_PHYSICAL_START must be a multiple of 2MB" | |
91 | #endif | |
92 | ||
d0537508 | 93 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
63f6564d RD |
94 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) |
95 | #define __PAGE_OFFSET _AC(0xffff810000000000, UL) | |
1da177e4 LT |
96 | |
97 | /* to align the pointer to the (next) page boundary */ | |
98 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
99 | ||
100 | /* See Documentation/x86_64/mm.txt for a description of the memory map. */ | |
101 | #define __PHYSICAL_MASK_SHIFT 46 | |
9d291e78 | 102 | #define __PHYSICAL_MASK ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1) |
1da177e4 | 103 | #define __VIRTUAL_MASK_SHIFT 48 |
9d291e78 | 104 | #define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1) |
1da177e4 | 105 | |
9d291e78 | 106 | #define KERNEL_TEXT_SIZE (40*1024*1024) |
63f6564d | 107 | #define KERNEL_TEXT_START _AC(0xffffffff80000000, UL) |
e3ebadd9 | 108 | #define PAGE_OFFSET __PAGE_OFFSET |
1da177e4 LT |
109 | |
110 | #ifndef __ASSEMBLY__ | |
111 | ||
112 | #include <asm/bug.h> | |
113 | ||
e3ebadd9 | 114 | extern unsigned long __phys_addr(unsigned long); |
1da177e4 | 115 | |
e3ebadd9 | 116 | #endif /* __ASSEMBLY__ */ |
1da177e4 | 117 | |
e3ebadd9 LT |
118 | #define __pa(x) __phys_addr((unsigned long)(x)) |
119 | #define __pa_symbol(x) __phys_addr((unsigned long)(x)) | |
1da177e4 LT |
120 | |
121 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) | |
e3ebadd9 LT |
122 | #define __boot_va(x) __va(x) |
123 | #define __boot_pa(x) __pa(x) | |
2b97690f | 124 | #ifdef CONFIG_FLATMEM |
b9aac10d | 125 | #define pfn_valid(pfn) ((pfn) < end_pfn) |
1da177e4 LT |
126 | #endif |
127 | ||
128 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | |
129 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
130 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
131 | ||
132 | #define VM_DATA_DEFAULT_FLAGS \ | |
133 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ | |
134 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
135 | ||
136 | #define __HAVE_ARCH_GATE_AREA 1 | |
0889eba5 | 137 | #define vmemmap ((struct page *)VMEMMAP_START) |
1da177e4 | 138 | |
dc8ecb43 | 139 | #include <asm-generic/memory_model.h> |
fd4fd5aa SR |
140 | #include <asm-generic/page.h> |
141 | ||
cd469e0c DW |
142 | #endif /* __KERNEL__ */ |
143 | ||
1da177e4 | 144 | #endif /* _X86_64_PAGE_H */ |