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authorAl Viro <viro@zeniv.linux.org.uk>2008-08-17 21:05:42 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-10-23 01:55:20 -0400
commitbb8985586b7a906e116db835c64773b7a7d51663 (patch)
treede93ae58e88cc563d95cc124a73f3930594c6100 /include/asm-x86/page_64.h
parent8ede0bdb63305d3353efd97e9af6210afb05734e (diff)
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/asm-x86/page_64.h')
-rw-r--r--include/asm-x86/page_64.h105
1 files changed, 0 insertions, 105 deletions
diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h
deleted file mode 100644
index 49380b8c7e25..000000000000
--- a/include/asm-x86/page_64.h
+++ /dev/null
@@ -1,105 +0,0 @@
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__
64void clear_page(void *page);
65void copy_page(void *to, void *from);
66
67/* duplicated to the one in bootmem.h */
68extern unsigned long max_pfn;
69extern unsigned long phys_base;
70
71extern 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 */
77typedef unsigned long pteval_t;
78typedef unsigned long pmdval_t;
79typedef unsigned long pudval_t;
80typedef unsigned long pgdval_t;
81typedef unsigned long pgprotval_t;
82
83typedef struct page *pgtable_t;
84
85typedef struct { pteval_t pte; } pte_t;
86
87#define vmemmap ((struct page *)VMEMMAP_START)
88
89extern unsigned long init_memory_mapping(unsigned long start,
90 unsigned long end);
91
92extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
93extern void free_initmem(void);
94
95extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
96extern 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 */