linux/include/asm-generic/4level-fixup.h
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   1#ifndef _4LEVEL_FIXUP_H
   2#define _4LEVEL_FIXUP_H
   3
   4#define __ARCH_HAS_4LEVEL_HACK
   5#define __PAGETABLE_PUD_FOLDED
   6
   7#define PUD_SIZE                        PGDIR_SIZE
   8#define PUD_MASK                        PGDIR_MASK
   9#define PTRS_PER_PUD                    1
  10
  11#define pud_t                           pgd_t
  12
  13#define pmd_alloc(mm, pud, address) \
  14        ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
  15                NULL: pmd_offset(pud, address))
  16
  17#define pud_alloc(mm, pgd, address)     (pgd)
  18#define pud_offset(pgd, start)          (pgd)
  19#define pud_none(pud)                   0
  20#define pud_bad(pud)                    0
  21#define pud_present(pud)                1
  22#define pud_ERROR(pud)                  do { } while (0)
  23#define pud_clear(pud)                  pgd_clear(pud)
  24#define pud_val(pud)                    pgd_val(pud)
  25#define pud_populate(mm, pud, pmd)      pgd_populate(mm, pud, pmd)
  26#define pud_page(pud)                   pgd_page(pud)
  27#define pud_page_vaddr(pud)             pgd_page_vaddr(pud)
  28
  29#undef pud_free_tlb
  30#define pud_free_tlb(tlb, x, addr)      do { } while (0)
  31#define pud_free(mm, x)                 do { } while (0)
  32#define __pud_free_tlb(tlb, x, addr)    do { } while (0)
  33
  34#undef  pud_addr_end
  35#define pud_addr_end(addr, end)         (end)
  36
  37#endif
  38
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