1 #ifndef _ASM_X86_PGTABLE_64_H
2 #define _ASM_X86_PGTABLE_64_H
4 #include <linux/const.h>
13 #include <asm/processor.h>
14 #include <linux/bitops.h>
24 #define swapper_pg_dir init_level4_pgt
28 #define pte_ERROR(e) \
29 pr_err("%s:%d: bad pte %p(%016lx)\n", \
30 __FILE__, __LINE__, &(e), pte_val(e))
31 #define pmd_ERROR(e) \
32 pr_err("%s:%d: bad pmd %p(%016lx)\n", \
33 __FILE__, __LINE__, &(e), pmd_val(e))
34 #define pud_ERROR(e) \
35 pr_err("%s:%d: bad pud %p(%016lx)\n", \
36 __FILE__, __LINE__, &(e), pud_val(e))
37 #define pgd_ERROR(e) \
38 pr_err("%s:%d: bad pgd %p(%016lx)\n", \
39 __FILE__, __LINE__, &(e), pgd_val(e))
46 static inline void native_pte_clear(
struct mm_struct *mm,
unsigned long addr,
49 *ptep = native_make_pte(0);
57 static inline void native_set_pte_atomic(
pte_t *ptep,
pte_t pte)
59 native_set_pte(ptep, pte);
67 static inline void native_pmd_clear(
pmd_t *
pmd)
69 native_set_pmd(pmd, native_make_pmd(0));
75 return native_make_pte(
xchg(&xp->
pte, 0));
80 native_pte_clear(
NULL, 0, xp);
88 return native_make_pmd(
xchg(&xp->
pmd, 0));
98 static inline void native_set_pud(
pud_t *pudp,
pud_t pud)
103 static inline void native_pud_clear(
pud_t *pud)
105 native_set_pud(pud, native_make_pud(0));
113 static inline void native_pgd_clear(
pgd_t *
pgd)
115 native_set_pgd(pgd, native_make_pgd(0));
129 #define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE)
134 #define pte_to_pgoff(pte) ((pte_val((pte)) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
135 #define pgoff_to_pte(off) ((pte_t) { .pte = ((off) << PAGE_SHIFT) | \
137 #define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
142 #define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
143 #define pte_unmap(pte) ((void)(pte))
145 #define update_mmu_cache(vma, address, ptep) do { } while (0)
146 #define update_mmu_cache_pmd(vma, address, pmd) do { } while (0)
149 #if _PAGE_BIT_FILE < _PAGE_BIT_PROTNONE
150 #define SWP_TYPE_BITS (_PAGE_BIT_FILE - _PAGE_BIT_PRESENT - 1)
151 #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1)
153 #define SWP_TYPE_BITS (_PAGE_BIT_PROTNONE - _PAGE_BIT_PRESENT - 1)
154 #define SWP_OFFSET_SHIFT (_PAGE_BIT_FILE + 1)
157 #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS)
159 #define __swp_type(x) (((x).val >> (_PAGE_BIT_PRESENT + 1)) \
160 & ((1U << SWP_TYPE_BITS) - 1))
161 #define __swp_offset(x) ((x).val >> SWP_OFFSET_SHIFT)
162 #define __swp_entry(type, offset) ((swp_entry_t) { \
163 ((type) << (_PAGE_BIT_PRESENT + 1)) \
164 | ((offset) << SWP_OFFSET_SHIFT) })
165 #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) })
166 #define __swp_entry_to_pte(x) ((pte_t) { .pte = (x).val })
171 #define HAVE_ARCH_UNMAPPED_AREA
172 #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
174 #define pgtable_cache_init() do { } while (0)
175 #define check_pgt_cache() do { } while (0)
177 #define PAGE_AGP PAGE_KERNEL_NOCACHE
178 #define HAVE_PAGE_AGP 1
181 #define kc_vaddr_to_offset(v) ((v) & __VIRTUAL_MASK)
182 #define kc_offset_to_vaddr(o) ((o) | ~__VIRTUAL_MASK)
184 #define __HAVE_ARCH_PTE_SAME