diff options
Diffstat (limited to 'arch/x86/include/asm/page_64.h')
-rw-r--r-- | arch/x86/include/asm/page_64.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h new file mode 100644 index 000000000000..5ebca29f44f0 --- /dev/null +++ b/arch/x86/include/asm/page_64.h | |||
@@ -0,0 +1,105 @@ | |||
1 | #ifndef _ASM_X86_PAGE_64_H | ||
2 | #define _ASM_X86_PAGE_64_H | ||
3 | |||
4 | #define PAGETABLE_LEVELS 4 | ||
5 | |||
6 | #define THREAD_ORDER 1 | ||
7 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | ||
8 | #define CURRENT_MASK (~(THREAD_SIZE - 1)) | ||
9 | |||
10 | #define EXCEPTION_STACK_ORDER 0 | ||
11 | #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) | ||
12 | |||
13 | #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) | ||
14 | #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) | ||
15 | |||
16 | #define IRQSTACK_ORDER 2 | ||
17 | #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER) | ||
18 | |||
19 | #define STACKFAULT_STACK 1 | ||
20 | #define DOUBLEFAULT_STACK 2 | ||
21 | #define NMI_STACK 3 | ||
22 | #define DEBUG_STACK 4 | ||
23 | #define MCE_STACK 5 | ||
24 | #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ | ||
25 | |||
26 | #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) | ||
27 | #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) | ||
28 | |||
29 | /* | ||
30 | * Set __PAGE_OFFSET to the most negative possible address + | ||
31 | * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a | ||
32 | * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's | ||
33 | * what Xen requires. | ||
34 | */ | ||
35 | #define __PAGE_OFFSET _AC(0xffff880000000000, UL) | ||
36 | |||
37 | #define __PHYSICAL_START CONFIG_PHYSICAL_START | ||
38 | #define __KERNEL_ALIGN 0x200000 | ||
39 | |||
40 | /* | ||
41 | * Make sure kernel is aligned to 2MB address. Catching it at compile | ||
42 | * time is better. Change your config file and compile the kernel | ||
43 | * for a 2MB aligned address (CONFIG_PHYSICAL_START) | ||
44 | */ | ||
45 | #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 | ||
46 | #error "CONFIG_PHYSICAL_START must be a multiple of 2MB" | ||
47 | #endif | ||
48 | |||
49 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | ||
50 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) | ||
51 | |||
52 | /* See Documentation/x86_64/mm.txt for a description of the memory map. */ | ||
53 | #define __PHYSICAL_MASK_SHIFT 46 | ||
54 | #define __VIRTUAL_MASK_SHIFT 48 | ||
55 | |||
56 | /* | ||
57 | * Kernel image size is limited to 512 MB (see level2_kernel_pgt in | ||
58 | * arch/x86/kernel/head_64.S), and it is mapped here: | ||
59 | */ | ||
60 | #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) | ||
61 | #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) | ||
62 | |||
63 | #ifndef __ASSEMBLY__ | ||
64 | void clear_page(void *page); | ||
65 | void copy_page(void *to, void *from); | ||
66 | |||
67 | /* duplicated to the one in bootmem.h */ | ||
68 | extern unsigned long max_pfn; | ||
69 | extern unsigned long phys_base; | ||
70 | |||
71 | extern unsigned long __phys_addr(unsigned long); | ||
72 | #define __phys_reloc_hide(x) (x) | ||
73 | |||
74 | /* | ||
75 | * These are used to make use of C type-checking.. | ||
76 | */ | ||
77 | typedef unsigned long pteval_t; | ||
78 | typedef unsigned long pmdval_t; | ||
79 | typedef unsigned long pudval_t; | ||
80 | typedef unsigned long pgdval_t; | ||
81 | typedef unsigned long pgprotval_t; | ||
82 | |||
83 | typedef struct page *pgtable_t; | ||
84 | |||
85 | typedef struct { pteval_t pte; } pte_t; | ||
86 | |||
87 | #define vmemmap ((struct page *)VMEMMAP_START) | ||
88 | |||
89 | extern unsigned long init_memory_mapping(unsigned long start, | ||
90 | unsigned long end); | ||
91 | |||
92 | extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); | ||
93 | extern void free_initmem(void); | ||
94 | |||
95 | extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); | ||
96 | extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); | ||
97 | |||
98 | #endif /* !__ASSEMBLY__ */ | ||
99 | |||
100 | #ifdef CONFIG_FLATMEM | ||
101 | #define pfn_valid(pfn) ((pfn) < max_pfn) | ||
102 | #endif | ||
103 | |||
104 | |||
105 | #endif /* _ASM_X86_PAGE_64_H */ | ||