include/asm-generic/5level-fixup.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _5LEVEL_FIXUP_H
   3 #define _5LEVEL_FIXUP_H
   4
   5 #define __ARCH_HAS_5LEVEL_HACK
   6 #define __PAGETABLE_P4D_FOLDED
   7
   8 #define P4D_SHIFT                       PGDIR_SHIFT
   9 #define P4D_SIZE                        PGDIR_SIZE
  10 #define P4D_MASK                        PGDIR_MASK
  11 #define PTRS_PER_P4D                    1
  12
  13 #define p4d_t                           pgd_t
  14
  15 #define pud_alloc(mm, p4d, address) \
  16         ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \
  17                 NULL : pud_offset(p4d, address))
  18
  19 #define p4d_alloc(mm, pgd, address)     (pgd)
  20 #define p4d_offset(pgd, start)          (pgd)
  21 #define p4d_none(p4d)                   0
  22 #define p4d_bad(p4d)                    0
  23 #define p4d_present(p4d)                1
  24 #define p4d_ERROR(p4d)                  do { } while (0)
  25 #define p4d_clear(p4d)                  pgd_clear(p4d)
  26 #define p4d_val(p4d)                    pgd_val(p4d)
  27 #define p4d_populate(mm, p4d, pud)      pgd_populate(mm, p4d, pud)
  28 #define p4d_page(p4d)                   pgd_page(p4d)
  29 #define p4d_page_vaddr(p4d)             pgd_page_vaddr(p4d)
  30
  31 #define __p4d(x)                        __pgd(x)
  32 #define set_p4d(p4dp, p4d)              set_pgd(p4dp, p4d)
  33
  34 #undef p4d_free_tlb
  35 #define p4d_free_tlb(tlb, x, addr)      do { } while (0)
  36 #define p4d_free(mm, x)                 do { } while (0)
  37 #define __p4d_free_tlb(tlb, x, addr)    do { } while (0)
  38
  39 #undef  p4d_addr_end
  40 #define p4d_addr_end(addr, end)         (end)
  41
  42 #endif