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51c78eb3 JF |
1 | #ifndef _ASM_X86_PAGE_64_DEFS_H |
2 | #define _ASM_X86_PAGE_64_DEFS_H | |
3 | ||
38e7c572 TG |
4 | #define THREAD_SIZE_ORDER 1 |
5 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | |
51c78eb3 JF |
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 | ||
c4f68236 PA |
35 | #define __PHYSICAL_START ((CONFIG_PHYSICAL_START + \ |
36 | (CONFIG_PHYSICAL_ALIGN - 1)) & \ | |
37 | ~(CONFIG_PHYSICAL_ALIGN - 1)) | |
51c78eb3 JF |
38 | |
39 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | |
40 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) | |
41 | ||
c898faf9 | 42 | /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ |
51c78eb3 | 43 | #define __PHYSICAL_MASK_SHIFT 46 |
9063c61f | 44 | #define __VIRTUAL_MASK_SHIFT 47 |
51c78eb3 JF |
45 | |
46 | /* | |
47 | * Kernel image size is limited to 512 MB (see level2_kernel_pgt in | |
48 | * arch/x86/kernel/head_64.S), and it is mapped here: | |
49 | */ | |
50 | #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) | |
51 | #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) | |
52 | ||
53 | #ifndef __ASSEMBLY__ | |
54 | void clear_page(void *page); | |
55 | void copy_page(void *to, void *from); | |
56 | ||
57 | /* duplicated to the one in bootmem.h */ | |
58 | extern unsigned long max_pfn; | |
59 | extern unsigned long phys_base; | |
60 | ||
61 | extern unsigned long __phys_addr(unsigned long); | |
62 | #define __phys_reloc_hide(x) (x) | |
63 | ||
51c78eb3 JF |
64 | #define vmemmap ((struct page *)VMEMMAP_START) |
65 | ||
51c78eb3 JF |
66 | extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); |
67 | extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); | |
68 | ||
69 | #endif /* !__ASSEMBLY__ */ | |
70 | ||
71 | #ifdef CONFIG_FLATMEM | |
72 | #define pfn_valid(pfn) ((pfn) < max_pfn) | |
73 | #endif | |
74 | ||
75 | #endif /* _ASM_X86_PAGE_64_DEFS_H */ |