arch/powerpc/include/asm/book3s/64/pgtable-4k.h

   1 #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
   2 #define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
   3 /*
   4  * hash 4k can't share hugetlb and also doesn't support THP
   5  */
   6 #ifndef __ASSEMBLY__
   7 #ifdef CONFIG_HUGETLB_PAGE
   8 static inline int pmd_huge(pmd_t pmd)
   9 {
  10         /*
  11          * leaf pte for huge page
  12          */
  13         if (radix_enabled())
  14                 return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
  15         return 0;
  16 }
  17
  18 static inline int pud_huge(pud_t pud)
  19 {
  20         /*
  21          * leaf pte for huge page
  22          */
  23         if (radix_enabled())
  24                 return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
  25         return 0;
  26 }
  27
  28 static inline int pgd_huge(pgd_t pgd)
  29 {
  30         /*
  31          * leaf pte for huge page
  32          */
  33         if (radix_enabled())
  34                 return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
  35         return 0;
  36 }
  37 #define pgd_huge pgd_huge
  38 /*
  39  * With radix , we have hugepage ptes in the pud and pmd entries. We don't
  40  * need to setup hugepage directory for them. Our pte and page directory format
  41  * enable us to have this enabled.
  42  */
  43 static inline int hugepd_ok(hugepd_t hpd)
  44 {
  45         if (radix_enabled())
  46                 return 0;
  47         return hash__hugepd_ok(hpd);
  48 }
  49 #define is_hugepd(hpd)          (hugepd_ok(hpd))
  50
  51 #else /* !CONFIG_HUGETLB_PAGE */
  52 static inline int pmd_huge(pmd_t pmd) { return 0; }
  53 static inline int pud_huge(pud_t pud) { return 0; }
  54 #endif /* CONFIG_HUGETLB_PAGE */
  55
  56 #endif /* __ASSEMBLY__ */
  57
  58 #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */