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20#ifndef _ASM_PGTABLE_3LEVEL_H
21#define _ASM_PGTABLE_3LEVEL_H
22
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30
31
32#define PTRS_PER_PTE 512
33#define PTRS_PER_PMD 512
34#define PTRS_PER_PGD 4
35
36#define PTE_HWTABLE_PTRS (0)
37#define PTE_HWTABLE_OFF (0)
38#define PTE_HWTABLE_SIZE (PTRS_PER_PTE * sizeof(u64))
39
40
41
42
43#define PGDIR_SHIFT 30
44
45
46
47
48#define PMD_SHIFT 21
49
50#define PMD_SIZE (1UL << PMD_SHIFT)
51#define PMD_MASK (~((1 << PMD_SHIFT) - 1))
52#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
53#define PGDIR_MASK (~((1 << PGDIR_SHIFT) - 1))
54
55
56
57
58#define SECTION_SHIFT 21
59#define SECTION_SIZE (1UL << SECTION_SHIFT)
60#define SECTION_MASK (~((1 << SECTION_SHIFT) - 1))
61
62#define USER_PTRS_PER_PGD (PAGE_OFFSET / PGDIR_SIZE)
63
64
65
66
67#define HPAGE_SHIFT PMD_SHIFT
68#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)
69#define HPAGE_MASK (~(HPAGE_SIZE - 1))
70#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
71
72
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76
77
78#define L_PTE_VALID (_AT(pteval_t, 1) << 0)
79#define L_PTE_PRESENT (_AT(pteval_t, 3) << 0)
80#define L_PTE_FILE (_AT(pteval_t, 1) << 2)
81#define L_PTE_USER (_AT(pteval_t, 1) << 6)
82#define L_PTE_RDONLY (_AT(pteval_t, 1) << 7)
83#define L_PTE_SHARED (_AT(pteval_t, 3) << 8)
84#define L_PTE_YOUNG (_AT(pteval_t, 1) << 10)
85#define L_PTE_XN (_AT(pteval_t, 1) << 54)
86#define L_PTE_DIRTY (_AT(pteval_t, 1) << 55)
87#define L_PTE_SPECIAL (_AT(pteval_t, 1) << 56)
88#define L_PTE_NONE (_AT(pteval_t, 1) << 57)
89
90#define PMD_SECT_VALID (_AT(pmdval_t, 1) << 0)
91#define PMD_SECT_DIRTY (_AT(pmdval_t, 1) << 55)
92#define PMD_SECT_SPLITTING (_AT(pmdval_t, 1) << 56)
93#define PMD_SECT_NONE (_AT(pmdval_t, 1) << 57)
94
95
96
97
98#define L_PTE_XN_HIGH (1 << (54 - 32))
99#define L_PTE_DIRTY_HIGH (1 << (55 - 32))
100
101
102
103
104#define L_PTE_MT_UNCACHED (_AT(pteval_t, 0) << 2)
105#define L_PTE_MT_BUFFERABLE (_AT(pteval_t, 1) << 2)
106#define L_PTE_MT_WRITETHROUGH (_AT(pteval_t, 2) << 2)
107#define L_PTE_MT_WRITEBACK (_AT(pteval_t, 3) << 2)
108#define L_PTE_MT_WRITEALLOC (_AT(pteval_t, 7) << 2)
109#define L_PTE_MT_DEV_SHARED (_AT(pteval_t, 4) << 2)
110#define L_PTE_MT_DEV_NONSHARED (_AT(pteval_t, 4) << 2)
111#define L_PTE_MT_DEV_WC (_AT(pteval_t, 1) << 2)
112#define L_PTE_MT_DEV_CACHED (_AT(pteval_t, 3) << 2)
113#define L_PTE_MT_MASK (_AT(pteval_t, 7) << 2)
114
115
116
117
118#define L_PGD_SWAPPER (_AT(pgdval_t, 1) << 55)
119
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122
123#define L_PTE_S2_MT_UNCACHED (_AT(pteval_t, 0x0) << 2)
124#define L_PTE_S2_MT_WRITETHROUGH (_AT(pteval_t, 0xa) << 2)
125#define L_PTE_S2_MT_WRITEBACK (_AT(pteval_t, 0xf) << 2)
126#define L_PTE_S2_MT_DEV_SHARED (_AT(pteval_t, 0x1) << 2)
127#define L_PTE_S2_MT_MASK (_AT(pteval_t, 0xf) << 2)
128
129#define L_PTE_S2_RDONLY (_AT(pteval_t, 1) << 6)
130#define L_PTE_S2_RDWR (_AT(pteval_t, 3) << 6)
131
132#define L_PMD_S2_RDWR (_AT(pmdval_t, 3) << 6)
133
134
135
136
137#define L_PTE_HYP L_PTE_USER
138
139#ifndef __ASSEMBLY__
140
141#define pud_none(pud) (!pud_val(pud))
142#define pud_bad(pud) (!(pud_val(pud) & 2))
143#define pud_present(pud) (pud_val(pud))
144#define pmd_table(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
145 PMD_TYPE_TABLE)
146#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
147 PMD_TYPE_SECT)
148#define pmd_large(pmd) pmd_sect(pmd)
149
150#define pud_clear(pudp) \
151 do { \
152 *pudp = __pud(0); \
153 clean_pmd_entry(pudp); \
154 } while (0)
155
156#define set_pud(pudp, pud) \
157 do { \
158 *pudp = pud; \
159 flush_pmd_entry(pudp); \
160 } while (0)
161
162static inline pmd_t *pud_page_vaddr(pud_t pud)
163{
164 return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK);
165}
166
167
168#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
169static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
170{
171 return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
172}
173
174#define pmd_bad(pmd) (!(pmd_val(pmd) & 2))
175
176#define copy_pmd(pmdpd,pmdps) \
177 do { \
178 *pmdpd = *pmdps; \
179 flush_pmd_entry(pmdpd); \
180 } while (0)
181
182#define pmd_clear(pmdp) \
183 do { \
184 *pmdp = __pmd(0); \
185 clean_pmd_entry(pmdp); \
186 } while (0)
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197
198
199#define __HAVE_ARCH_PTE_SAME
200#define pte_same(pte_a,pte_b) ((pte_present(pte_a) ? pte_val(pte_a) & ~PTE_EXT_NG \
201 : pte_val(pte_a)) \
202 == (pte_present(pte_b) ? pte_val(pte_b) & ~PTE_EXT_NG \
203 : pte_val(pte_b)))
204
205#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,__pte(pte_val(pte)|(ext)))
206
207#define pte_huge(pte) (pte_val(pte) && !(pte_val(pte) & PTE_TABLE_BIT))
208#define pte_mkhuge(pte) (__pte(pte_val(pte) & ~PTE_TABLE_BIT))
209
210#define pmd_young(pmd) (pmd_val(pmd) & PMD_SECT_AF)
211
212#define __HAVE_ARCH_PMD_WRITE
213#define pmd_write(pmd) (!(pmd_val(pmd) & PMD_SECT_RDONLY))
214
215#define pmd_hugewillfault(pmd) (!pmd_young(pmd) || !pmd_write(pmd))
216#define pmd_thp_or_huge(pmd) (pmd_huge(pmd) || pmd_trans_huge(pmd))
217
218#ifdef CONFIG_TRANSPARENT_HUGEPAGE
219#define pmd_trans_huge(pmd) (pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT))
220#define pmd_trans_splitting(pmd) (pmd_val(pmd) & PMD_SECT_SPLITTING)
221#endif
222
223#define PMD_BIT_FUNC(fn,op) \
224static inline pmd_t pmd_##fn(pmd_t pmd) { pmd_val(pmd) op; return pmd; }
225
226PMD_BIT_FUNC(wrprotect, |= PMD_SECT_RDONLY);
227PMD_BIT_FUNC(mkold, &= ~PMD_SECT_AF);
228PMD_BIT_FUNC(mksplitting, |= PMD_SECT_SPLITTING);
229PMD_BIT_FUNC(mkwrite, &= ~PMD_SECT_RDONLY);
230PMD_BIT_FUNC(mkdirty, |= PMD_SECT_DIRTY);
231PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
232
233#define pmd_mkhuge(pmd) (__pmd(pmd_val(pmd) & ~PMD_TABLE_BIT))
234
235#define pmd_pfn(pmd) (((pmd_val(pmd) & PMD_MASK) & PHYS_MASK) >> PAGE_SHIFT)
236#define pfn_pmd(pfn,prot) (__pmd(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
237#define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
238
239
240#define pmd_mknotpresent(pmd) (__pmd(0))
241
242static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
243{
244 const pmdval_t mask = PMD_SECT_USER | PMD_SECT_XN | PMD_SECT_RDONLY |
245 PMD_SECT_VALID | PMD_SECT_NONE;
246 pmd_val(pmd) = (pmd_val(pmd) & ~mask) | (pgprot_val(newprot) & mask);
247 return pmd;
248}
249
250static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
251 pmd_t *pmdp, pmd_t pmd)
252{
253 BUG_ON(addr >= TASK_SIZE);
254
255
256 if (pmd_val(pmd) & PMD_SECT_NONE)
257 pmd_val(pmd) &= ~PMD_SECT_VALID;
258
259 *pmdp = __pmd(pmd_val(pmd) | PMD_SECT_nG);
260 flush_pmd_entry(pmdp);
261}
262
263static inline int has_transparent_hugepage(void)
264{
265 return 1;
266}
267
268#endif
269
270#endif
271