1 #ifndef _ASM_X86_PGTABLE_H
2 #define _ASM_X86_PGTABLE_H
4 #define FIRST_USER_ADDRESS 0
6 #define _PAGE_BIT_PRESENT 0 /* is present */
7 #define _PAGE_BIT_RW 1 /* writeable */
8 #define _PAGE_BIT_USER 2 /* userspace addressable */
9 #define _PAGE_BIT_PWT 3 /* page write through */
10 #define _PAGE_BIT_PCD 4 /* page cache disabled */
11 #define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
12 #define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
13 #define _PAGE_BIT_FILE 6
14 #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
15 #define _PAGE_BIT_PAT 7 /* on 4KB pages */
16 #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
17 #define _PAGE_BIT_UNUSED1 9 /* available for programmer */
18 #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
19 #define _PAGE_BIT_UNUSED3 11
20 #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
21 #define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
22 #define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
23 #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
25 #define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
26 #define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
27 #define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
28 #define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
29 #define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
30 #define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
31 #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
32 #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
33 #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
34 #define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
35 #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
36 #define _PAGE_UNUSED3 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3)
37 #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
38 #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
39 #define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
40 #define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
41 #define __HAVE_ARCH_PTE_SPECIAL
43 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
44 #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
46 #define _PAGE_NX (_AT(pteval_t, 0))
49 /* If _PAGE_PRESENT is clear, we use these: */
50 #define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping,
51 * saved PTE; unset:swap */
52 #define _PAGE_PROTNONE _PAGE_PSE /* if the user mapped it with PROT_NONE;
53 pte_present gives true */
55 #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
56 _PAGE_ACCESSED | _PAGE_DIRTY)
57 #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \
60 /* Set of bits not changed in pte_modify */
61 #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
62 _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
64 #define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT)
65 #define _PAGE_CACHE_WB (0)
66 #define _PAGE_CACHE_WC (_PAGE_PWT)
67 #define _PAGE_CACHE_UC_MINUS (_PAGE_PCD)
68 #define _PAGE_CACHE_UC (_PAGE_PCD | _PAGE_PWT)
70 #define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
71 #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
72 _PAGE_ACCESSED | _PAGE_NX)
74 #define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \
75 _PAGE_USER | _PAGE_ACCESSED)
76 #define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
77 _PAGE_ACCESSED | _PAGE_NX)
78 #define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
80 #define PAGE_COPY PAGE_COPY_NOEXEC
81 #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \
82 _PAGE_ACCESSED | _PAGE_NX)
83 #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
86 #define __PAGE_KERNEL_EXEC \
87 (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
88 #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
90 #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
91 #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
92 #define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
93 #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC)
94 #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
95 #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD)
96 #define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
97 #define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
98 #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
99 #define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
100 #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
102 #define __PAGE_KERNEL_IO (__PAGE_KERNEL | _PAGE_IOMAP)
103 #define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
104 #define __PAGE_KERNEL_IO_UC_MINUS (__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
105 #define __PAGE_KERNEL_IO_WC (__PAGE_KERNEL_WC | _PAGE_IOMAP)
107 #define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
108 #define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
109 #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
110 #define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
111 #define PAGE_KERNEL_WC __pgprot(__PAGE_KERNEL_WC)
112 #define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
113 #define PAGE_KERNEL_UC_MINUS __pgprot(__PAGE_KERNEL_UC_MINUS)
114 #define PAGE_KERNEL_EXEC_NOCACHE __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
115 #define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
116 #define PAGE_KERNEL_LARGE_NOCACHE __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
117 #define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
118 #define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL)
119 #define PAGE_KERNEL_VSYSCALL_NOCACHE __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
121 #define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO)
122 #define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE)
123 #define PAGE_KERNEL_IO_UC_MINUS __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
124 #define PAGE_KERNEL_IO_WC __pgprot(__PAGE_KERNEL_IO_WC)
127 #define __P000 PAGE_NONE
128 #define __P001 PAGE_READONLY
129 #define __P010 PAGE_COPY
130 #define __P011 PAGE_COPY
131 #define __P100 PAGE_READONLY_EXEC
132 #define __P101 PAGE_READONLY_EXEC
133 #define __P110 PAGE_COPY_EXEC
134 #define __P111 PAGE_COPY_EXEC
136 #define __S000 PAGE_NONE
137 #define __S001 PAGE_READONLY
138 #define __S010 PAGE_SHARED
139 #define __S011 PAGE_SHARED
140 #define __S100 PAGE_READONLY_EXEC
141 #define __S101 PAGE_READONLY_EXEC
142 #define __S110 PAGE_SHARED_EXEC
143 #define __S111 PAGE_SHARED_EXEC
146 * early identity mapping pte attrib macros.
149 #define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
152 * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
153 * bits are combined, this will alow user to access the high address mapped
154 * VDSO in the presence of CONFIG_COMPAT_VDSO
156 #define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
157 #define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */
158 #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
164 * ZERO_PAGE is a global shared page that is always zero: used
165 * for zero-mapped memory areas etc..
167 extern unsigned long empty_zero_page
[PAGE_SIZE
/ sizeof(unsigned long)];
168 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
170 extern spinlock_t pgd_lock
;
171 extern struct list_head pgd_list
;
174 * The following only work if pte_present() is true.
175 * Undefined behaviour if not..
177 static inline int pte_dirty(pte_t pte
)
179 return pte_flags(pte
) & _PAGE_DIRTY
;
182 static inline int pte_young(pte_t pte
)
184 return pte_flags(pte
) & _PAGE_ACCESSED
;
187 static inline int pte_write(pte_t pte
)
189 return pte_flags(pte
) & _PAGE_RW
;
192 static inline int pte_file(pte_t pte
)
194 return pte_flags(pte
) & _PAGE_FILE
;
197 static inline int pte_huge(pte_t pte
)
199 return pte_flags(pte
) & _PAGE_PSE
;
202 static inline int pte_global(pte_t pte
)
204 return pte_flags(pte
) & _PAGE_GLOBAL
;
207 static inline int pte_exec(pte_t pte
)
209 return !(pte_flags(pte
) & _PAGE_NX
);
212 static inline int pte_special(pte_t pte
)
214 return pte_flags(pte
) & _PAGE_SPECIAL
;
217 static inline unsigned long pte_pfn(pte_t pte
)
219 return (pte_val(pte
) & PTE_PFN_MASK
) >> PAGE_SHIFT
;
222 #define pte_page(pte) pfn_to_page(pte_pfn(pte))
224 static inline int pmd_large(pmd_t pte
)
226 return (pmd_val(pte
) & (_PAGE_PSE
| _PAGE_PRESENT
)) ==
227 (_PAGE_PSE
| _PAGE_PRESENT
);
230 static inline pte_t
pte_mkclean(pte_t pte
)
232 return __pte(pte_val(pte
) & ~_PAGE_DIRTY
);
235 static inline pte_t
pte_mkold(pte_t pte
)
237 return __pte(pte_val(pte
) & ~_PAGE_ACCESSED
);
240 static inline pte_t
pte_wrprotect(pte_t pte
)
242 return __pte(pte_val(pte
) & ~_PAGE_RW
);
245 static inline pte_t
pte_mkexec(pte_t pte
)
247 return __pte(pte_val(pte
) & ~_PAGE_NX
);
250 static inline pte_t
pte_mkdirty(pte_t pte
)
252 return __pte(pte_val(pte
) | _PAGE_DIRTY
);
255 static inline pte_t
pte_mkyoung(pte_t pte
)
257 return __pte(pte_val(pte
) | _PAGE_ACCESSED
);
260 static inline pte_t
pte_mkwrite(pte_t pte
)
262 return __pte(pte_val(pte
) | _PAGE_RW
);
265 static inline pte_t
pte_mkhuge(pte_t pte
)
267 return __pte(pte_val(pte
) | _PAGE_PSE
);
270 static inline pte_t
pte_clrhuge(pte_t pte
)
272 return __pte(pte_val(pte
) & ~_PAGE_PSE
);
275 static inline pte_t
pte_mkglobal(pte_t pte
)
277 return __pte(pte_val(pte
) | _PAGE_GLOBAL
);
280 static inline pte_t
pte_clrglobal(pte_t pte
)
282 return __pte(pte_val(pte
) & ~_PAGE_GLOBAL
);
285 static inline pte_t
pte_mkspecial(pte_t pte
)
287 return __pte(pte_val(pte
) | _PAGE_SPECIAL
);
290 extern pteval_t __supported_pte_mask
;
292 static inline pte_t
pfn_pte(unsigned long page_nr
, pgprot_t pgprot
)
294 return __pte((((phys_addr_t
)page_nr
<< PAGE_SHIFT
) |
295 pgprot_val(pgprot
)) & __supported_pte_mask
);
298 static inline pmd_t
pfn_pmd(unsigned long page_nr
, pgprot_t pgprot
)
300 return __pmd((((phys_addr_t
)page_nr
<< PAGE_SHIFT
) |
301 pgprot_val(pgprot
)) & __supported_pte_mask
);
304 static inline pte_t
pte_modify(pte_t pte
, pgprot_t newprot
)
306 pteval_t val
= pte_val(pte
);
309 * Chop off the NX bit (if present), and add the NX portion of
310 * the newprot (if present):
312 val
&= _PAGE_CHG_MASK
;
313 val
|= pgprot_val(newprot
) & (~_PAGE_CHG_MASK
) & __supported_pte_mask
;
318 /* mprotect needs to preserve PAT bits when updating vm_page_prot */
319 #define pgprot_modify pgprot_modify
320 static inline pgprot_t
pgprot_modify(pgprot_t oldprot
, pgprot_t newprot
)
322 pgprotval_t preservebits
= pgprot_val(oldprot
) & _PAGE_CHG_MASK
;
323 pgprotval_t addbits
= pgprot_val(newprot
);
324 return __pgprot(preservebits
| addbits
);
327 #define pte_pgprot(x) __pgprot(pte_flags(x) & PTE_FLAGS_MASK)
329 #define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)
332 #define __HAVE_PHYS_MEM_ACCESS_PROT
334 pgprot_t
phys_mem_access_prot(struct file
*file
, unsigned long pfn
,
335 unsigned long size
, pgprot_t vma_prot
);
336 int phys_mem_access_prot_allowed(struct file
*file
, unsigned long pfn
,
337 unsigned long size
, pgprot_t
*vma_prot
);
340 /* Install a pte for a particular vaddr in kernel space. */
341 void set_pte_vaddr(unsigned long vaddr
, pte_t pte
);
344 extern void native_pagetable_setup_start(pgd_t
*base
);
345 extern void native_pagetable_setup_done(pgd_t
*base
);
347 static inline void native_pagetable_setup_start(pgd_t
*base
) {}
348 static inline void native_pagetable_setup_done(pgd_t
*base
) {}
352 extern void arch_report_meminfo(struct seq_file
*m
);
354 #ifdef CONFIG_PARAVIRT
355 #include <asm/paravirt.h>
356 #else /* !CONFIG_PARAVIRT */
357 #define set_pte(ptep, pte) native_set_pte(ptep, pte)
358 #define set_pte_at(mm, addr, ptep, pte) native_set_pte_at(mm, addr, ptep, pte)
360 #define set_pte_present(mm, addr, ptep, pte) \
361 native_set_pte_present(mm, addr, ptep, pte)
362 #define set_pte_atomic(ptep, pte) \
363 native_set_pte_atomic(ptep, pte)
365 #define set_pmd(pmdp, pmd) native_set_pmd(pmdp, pmd)
367 #ifndef __PAGETABLE_PUD_FOLDED
368 #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd)
369 #define pgd_clear(pgd) native_pgd_clear(pgd)
373 # define set_pud(pudp, pud) native_set_pud(pudp, pud)
376 #ifndef __PAGETABLE_PMD_FOLDED
377 #define pud_clear(pud) native_pud_clear(pud)
380 #define pte_clear(mm, addr, ptep) native_pte_clear(mm, addr, ptep)
381 #define pmd_clear(pmd) native_pmd_clear(pmd)
383 #define pte_update(mm, addr, ptep) do { } while (0)
384 #define pte_update_defer(mm, addr, ptep) do { } while (0)
386 static inline void __init
paravirt_pagetable_setup_start(pgd_t
*base
)
388 native_pagetable_setup_start(base
);
391 static inline void __init
paravirt_pagetable_setup_done(pgd_t
*base
)
393 native_pagetable_setup_done(base
);
395 #endif /* CONFIG_PARAVIRT */
397 #endif /* __ASSEMBLY__ */
400 # include "pgtable_32.h"
402 # include "pgtable_64.h"
406 * the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
408 * this macro returns the index of the entry in the pgd page which would
409 * control the given virtual address
411 #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
414 * pgd_offset() returns a (pgd_t *)
415 * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
417 #define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address)))
419 * a shortcut which implies the use of the kernel's pgd, instead
422 #define pgd_offset_k(address) pgd_offset(&init_mm, (address))
425 #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET)
426 #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY)
438 #ifdef CONFIG_PROC_FS
439 extern void update_page_count(int level
, unsigned long pages
);
441 static inline void update_page_count(int level
, unsigned long pages
) { }
445 * Helper function that returns the kernel pagetable entry controlling
446 * the virtual address 'address'. NULL means no pagetable entry present.
447 * NOTE: the return type is pte_t but if the pmd is PSE then we return it
450 extern pte_t
*lookup_address(unsigned long address
, unsigned int *level
);
452 /* local pte updates need not use xchg for locking */
453 static inline pte_t
native_local_ptep_get_and_clear(pte_t
*ptep
)
457 /* Pure native function needs no input for mm, addr */
458 native_pte_clear(NULL
, 0, ptep
);
462 static inline void native_set_pte_at(struct mm_struct
*mm
, unsigned long addr
,
463 pte_t
*ptep
, pte_t pte
)
465 native_set_pte(ptep
, pte
);
468 #ifndef CONFIG_PARAVIRT
470 * Rules for using pte_update - it must be called after any PTE update which
471 * has not been done using the set_pte / clear_pte interfaces. It is used by
472 * shadow mode hypervisors to resynchronize the shadow page tables. Kernel PTE
473 * updates should either be sets, clears, or set_pte_atomic for P->P
474 * transitions, which means this hook should only be called for user PTEs.
475 * This hook implies a P->P protection or access change has taken place, which
476 * requires a subsequent TLB flush. The notification can optionally be delayed
477 * until the TLB flush event by using the pte_update_defer form of the
478 * interface, but care must be taken to assure that the flush happens while
479 * still holding the same page table lock so that the shadow and primary pages
480 * do not become out of sync on SMP.
482 #define pte_update(mm, addr, ptep) do { } while (0)
483 #define pte_update_defer(mm, addr, ptep) do { } while (0)
487 * We only update the dirty/accessed state if we set
488 * the dirty bit by hand in the kernel, since the hardware
489 * will do the accessed bit for us, and we don't want to
490 * race with other CPU's that might be updating the dirty
491 * bit at the same time.
493 struct vm_area_struct
;
495 #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
496 extern int ptep_set_access_flags(struct vm_area_struct
*vma
,
497 unsigned long address
, pte_t
*ptep
,
498 pte_t entry
, int dirty
);
500 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
501 extern int ptep_test_and_clear_young(struct vm_area_struct
*vma
,
502 unsigned long addr
, pte_t
*ptep
);
504 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
505 extern int ptep_clear_flush_young(struct vm_area_struct
*vma
,
506 unsigned long address
, pte_t
*ptep
);
508 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR
509 static inline pte_t
ptep_get_and_clear(struct mm_struct
*mm
, unsigned long addr
,
512 pte_t pte
= native_ptep_get_and_clear(ptep
);
513 pte_update(mm
, addr
, ptep
);
517 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
518 static inline pte_t
ptep_get_and_clear_full(struct mm_struct
*mm
,
519 unsigned long addr
, pte_t
*ptep
,
525 * Full address destruction in progress; paravirt does not
526 * care about updates and native needs no locking
528 pte
= native_local_ptep_get_and_clear(ptep
);
530 pte
= ptep_get_and_clear(mm
, addr
, ptep
);
535 #define __HAVE_ARCH_PTEP_SET_WRPROTECT
536 static inline void ptep_set_wrprotect(struct mm_struct
*mm
,
537 unsigned long addr
, pte_t
*ptep
)
539 clear_bit(_PAGE_BIT_RW
, (unsigned long *)&ptep
->pte
);
540 pte_update(mm
, addr
, ptep
);
544 * clone_pgd_range(pgd_t *dst, pgd_t *src, int count);
546 * dst - pointer to pgd range anwhere on a pgd page
548 * count - the number of pgds to copy.
550 * dst and src can be on the same page, but the range must not overlap,
551 * and must not cross a page boundary.
553 static inline void clone_pgd_range(pgd_t
*dst
, pgd_t
*src
, int count
)
555 memcpy(dst
, src
, count
* sizeof(pgd_t
));
559 #include <asm-generic/pgtable.h>
560 #endif /* __ASSEMBLY__ */
562 #endif /* _ASM_X86_PGTABLE_H */