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-rw-r--r--arch/x86/include/asm/page.h167
1 files changed, 4 insertions, 163 deletions
diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index 05f2da7f387a..89ed9d70b0aa 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -1,42 +1,11 @@
1#ifndef _ASM_X86_PAGE_H 1#ifndef _ASM_X86_PAGE_H
2#define _ASM_X86_PAGE_H 2#define _ASM_X86_PAGE_H
3 3
4#include <linux/const.h> 4#include <linux/types.h>
5
6/* PAGE_SHIFT determines the page size */
7#define PAGE_SHIFT 12
8#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
9#define PAGE_MASK (~(PAGE_SIZE-1))
10 5
11#ifdef __KERNEL__ 6#ifdef __KERNEL__
12 7
13#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) 8#include <asm/page_types.h>
14#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
15
16/* Cast PAGE_MASK to a signed type so that it is sign-extended if
17 virtual addresses are 32-bits but physical addresses are larger
18 (ie, 32-bit PAE). */
19#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
20
21/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
22#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
23
24/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
25#define PTE_FLAGS_MASK (~PTE_PFN_MASK)
26
27#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
28#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
29
30#define HPAGE_SHIFT PMD_SHIFT
31#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
32#define HPAGE_MASK (~(HPAGE_SIZE - 1))
33#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
34
35#define HUGE_MAX_HSTATE 2
36
37#ifndef __ASSEMBLY__
38#include <linux/types.h>
39#endif
40 9
41#ifdef CONFIG_X86_64 10#ifdef CONFIG_X86_64
42#include <asm/page_64.h> 11#include <asm/page_64.h>
@@ -44,38 +13,18 @@
44#include <asm/page_32.h> 13#include <asm/page_32.h>
45#endif /* CONFIG_X86_64 */ 14#endif /* CONFIG_X86_64 */
46 15
47#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
48
49#define VM_DATA_DEFAULT_FLAGS \
50 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
51 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
52
53
54#ifndef __ASSEMBLY__ 16#ifndef __ASSEMBLY__
55 17
56typedef struct { pgdval_t pgd; } pgd_t;
57typedef struct { pgprotval_t pgprot; } pgprot_t;
58
59extern int page_is_ram(unsigned long pagenr);
60extern int devmem_is_allowed(unsigned long pagenr);
61extern void map_devmem(unsigned long pfn, unsigned long size,
62 pgprot_t vma_prot);
63extern void unmap_devmem(unsigned long pfn, unsigned long size,
64 pgprot_t vma_prot);
65
66extern unsigned long max_low_pfn_mapped;
67extern unsigned long max_pfn_mapped;
68
69struct page; 18struct page;
70 19
71static inline void clear_user_page(void *page, unsigned long vaddr, 20static inline void clear_user_page(void *page, unsigned long vaddr,
72 struct page *pg) 21 struct page *pg)
73{ 22{
74 clear_page(page); 23 clear_page(page);
75} 24}
76 25
77static inline void copy_user_page(void *to, void *from, unsigned long vaddr, 26static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
78 struct page *topage) 27 struct page *topage)
79{ 28{
80 copy_page(to, from); 29 copy_page(to, from);
81} 30}
@@ -84,114 +33,6 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
84 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) 33 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
85#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE 34#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
86 35
87static inline pgd_t native_make_pgd(pgdval_t val)
88{
89 return (pgd_t) { val };
90}
91
92static inline pgdval_t native_pgd_val(pgd_t pgd)
93{
94 return pgd.pgd;
95}
96
97static inline pgdval_t pgd_flags(pgd_t pgd)
98{
99 return native_pgd_val(pgd) & PTE_FLAGS_MASK;
100}
101
102#if PAGETABLE_LEVELS >= 3
103#if PAGETABLE_LEVELS == 4
104typedef struct { pudval_t pud; } pud_t;
105
106static inline pud_t native_make_pud(pmdval_t val)
107{
108 return (pud_t) { val };
109}
110
111static inline pudval_t native_pud_val(pud_t pud)
112{
113 return pud.pud;
114}
115#else /* PAGETABLE_LEVELS == 3 */
116#include <asm-generic/pgtable-nopud.h>
117
118static inline pudval_t native_pud_val(pud_t pud)
119{
120 return native_pgd_val(pud.pgd);
121}
122#endif /* PAGETABLE_LEVELS == 4 */
123
124static inline pudval_t pud_flags(pud_t pud)
125{
126 return native_pud_val(pud) & PTE_FLAGS_MASK;
127}
128
129typedef struct { pmdval_t pmd; } pmd_t;
130
131static inline pmd_t native_make_pmd(pmdval_t val)
132{
133 return (pmd_t) { val };
134}
135
136static inline pmdval_t native_pmd_val(pmd_t pmd)
137{
138 return pmd.pmd;
139}
140
141#else /* PAGETABLE_LEVELS == 2 */
142#include <asm-generic/pgtable-nopmd.h>
143
144static inline pmdval_t native_pmd_val(pmd_t pmd)
145{
146 return native_pgd_val(pmd.pud.pgd);
147}
148#endif /* PAGETABLE_LEVELS >= 3 */
149
150static inline pmdval_t pmd_flags(pmd_t pmd)
151{
152 return native_pmd_val(pmd) & PTE_FLAGS_MASK;
153}
154
155static inline pte_t native_make_pte(pteval_t val)
156{
157 return (pte_t) { .pte = val };
158}
159
160static inline pteval_t native_pte_val(pte_t pte)
161{
162 return pte.pte;
163}
164
165static inline pteval_t pte_flags(pte_t pte)
166{
167 return native_pte_val(pte) & PTE_FLAGS_MASK;
168}
169
170#define pgprot_val(x) ((x).pgprot)
171#define __pgprot(x) ((pgprot_t) { (x) } )
172
173#ifdef CONFIG_PARAVIRT
174#include <asm/paravirt.h>
175#else /* !CONFIG_PARAVIRT */
176
177#define pgd_val(x) native_pgd_val(x)
178#define __pgd(x) native_make_pgd(x)
179
180#ifndef __PAGETABLE_PUD_FOLDED
181#define pud_val(x) native_pud_val(x)
182#define __pud(x) native_make_pud(x)
183#endif
184
185#ifndef __PAGETABLE_PMD_FOLDED
186#define pmd_val(x) native_pmd_val(x)
187#define __pmd(x) native_make_pmd(x)
188#endif
189
190#define pte_val(x) native_pte_val(x)
191#define __pte(x) native_make_pte(x)
192
193#endif /* CONFIG_PARAVIRT */
194
195#define __pa(x) __phys_addr((unsigned long)(x)) 36#define __pa(x) __phys_addr((unsigned long)(x))
196#define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) 37#define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x))
197/* __pa_symbol should be used for C visible symbols. 38/* __pa_symbol should be used for C visible symbols.