diff options
Diffstat (limited to 'arch/x86/include/asm/page_64_types.h')
-rw-r--r-- | arch/x86/include/asm/page_64_types.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h new file mode 100644 index 00000000000..d38c91b7024 --- /dev/null +++ b/arch/x86/include/asm/page_64_types.h | |||
@@ -0,0 +1,89 @@ | |||
1 | #ifndef _ASM_X86_PAGE_64_DEFS_H | ||
2 | #define _ASM_X86_PAGE_64_DEFS_H | ||
3 | |||
4 | #define THREAD_ORDER 1 | ||
5 | #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | ||
6 | #define CURRENT_MASK (~(THREAD_SIZE - 1)) | ||
7 | |||
8 | #define EXCEPTION_STACK_ORDER 0 | ||
9 | #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) | ||
10 | |||
11 | #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) | ||
12 | #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) | ||
13 | |||
14 | #define IRQ_STACK_ORDER 2 | ||
15 | #define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) | ||
16 | |||
17 | #define STACKFAULT_STACK 1 | ||
18 | #define DOUBLEFAULT_STACK 2 | ||
19 | #define NMI_STACK 3 | ||
20 | #define DEBUG_STACK 4 | ||
21 | #define MCE_STACK 5 | ||
22 | #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ | ||
23 | |||
24 | #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) | ||
25 | #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) | ||
26 | |||
27 | /* | ||
28 | * Set __PAGE_OFFSET to the most negative possible address + | ||
29 | * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a | ||
30 | * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's | ||
31 | * what Xen requires. | ||
32 | */ | ||
33 | #define __PAGE_OFFSET _AC(0xffff880000000000, UL) | ||
34 | |||
35 | #define __PHYSICAL_START CONFIG_PHYSICAL_START | ||
36 | #define __KERNEL_ALIGN 0x200000 | ||
37 | |||
38 | /* | ||
39 | * Make sure kernel is aligned to 2MB address. Catching it at compile | ||
40 | * time is better. Change your config file and compile the kernel | ||
41 | * for a 2MB aligned address (CONFIG_PHYSICAL_START) | ||
42 | */ | ||
43 | #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 | ||
44 | #error "CONFIG_PHYSICAL_START must be a multiple of 2MB" | ||
45 | #endif | ||
46 | |||
47 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | ||
48 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) | ||
49 | |||
50 | /* See Documentation/x86_64/mm.txt for a description of the memory map. */ | ||
51 | #define __PHYSICAL_MASK_SHIFT 46 | ||
52 | #define __VIRTUAL_MASK_SHIFT 48 | ||
53 | |||
54 | /* | ||
55 | * Kernel image size is limited to 512 MB (see level2_kernel_pgt in | ||
56 | * arch/x86/kernel/head_64.S), and it is mapped here: | ||
57 | */ | ||
58 | #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) | ||
59 | #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) | ||
60 | |||
61 | #ifndef __ASSEMBLY__ | ||
62 | void clear_page(void *page); | ||
63 | void copy_page(void *to, void *from); | ||
64 | |||
65 | /* duplicated to the one in bootmem.h */ | ||
66 | extern unsigned long max_pfn; | ||
67 | extern unsigned long phys_base; | ||
68 | |||
69 | extern unsigned long __phys_addr(unsigned long); | ||
70 | #define __phys_reloc_hide(x) (x) | ||
71 | |||
72 | #define vmemmap ((struct page *)VMEMMAP_START) | ||
73 | |||
74 | extern unsigned long init_memory_mapping(unsigned long start, | ||
75 | unsigned long end); | ||
76 | |||
77 | extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); | ||
78 | extern void free_initmem(void); | ||
79 | |||
80 | extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); | ||
81 | extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); | ||
82 | |||
83 | #endif /* !__ASSEMBLY__ */ | ||
84 | |||
85 | #ifdef CONFIG_FLATMEM | ||
86 | #define pfn_valid(pfn) ((pfn) < max_pfn) | ||
87 | #endif | ||
88 | |||
89 | #endif /* _ASM_X86_PAGE_64_DEFS_H */ | ||