arch/riscv/mm/hugetlbpage.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/hugetlb.h>
   3 #include <linux/err.h>
   4
   5 int pud_huge(pud_t pud)
   6 {
   7         return pud_leaf(pud);
   8 }
   9
  10 int pmd_huge(pmd_t pmd)
  11 {
  12         return pmd_leaf(pmd);
  13 }
  14
  15 bool __init arch_hugetlb_valid_size(unsigned long size)
  16 {
  17         if (size == HPAGE_SIZE)
  18                 return true;
  19         else if (IS_ENABLED(CONFIG_64BIT) && size == PUD_SIZE)
  20                 return true;
  21         else
  22                 return false;
  23 }
  24
  25 #ifdef CONFIG_CONTIG_ALLOC
  26 static __init int gigantic_pages_init(void)
  27 {
  28         /* With CONTIG_ALLOC, we can allocate gigantic pages at runtime */
  29         if (IS_ENABLED(CONFIG_64BIT))
  30                 hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
  31         return 0;
  32 }
  33 arch_initcall(gigantic_pages_init);
  34 #endif