arch/riscv/include/asm/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_RISCV_HUGETLB_H
   3 #define _ASM_RISCV_HUGETLB_H
   4
   5 #include <asm/cacheflush.h>
   6 #include <asm/page.h>
   7
   8 static inline void arch_clear_hugepage_flags(struct page *page)
   9 {
  10         clear_bit(PG_dcache_clean, &page->flags);
  11 }
  12 #define arch_clear_hugepage_flags arch_clear_hugepage_flags
  13
  14 bool arch_hugetlb_migration_supported(struct hstate *h);
  15 #define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
  16
  17 #ifdef CONFIG_RISCV_ISA_SVNAPOT
  18 #define __HAVE_ARCH_HUGE_PTE_CLEAR
  19 void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
  20                     pte_t *ptep, unsigned long sz);
  21
  22 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
  23 void set_huge_pte_at(struct mm_struct *mm,
  24                      unsigned long addr, pte_t *ptep, pte_t pte,
  25                      unsigned long sz);
  26
  27 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
  28 pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  29                               unsigned long addr, pte_t *ptep);
  30
  31 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  32 pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
  33                             unsigned long addr, pte_t *ptep);
  34
  35 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
  36 void huge_ptep_set_wrprotect(struct mm_struct *mm,
  37                              unsigned long addr, pte_t *ptep);
  38
  39 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
  40 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  41                                unsigned long addr, pte_t *ptep,
  42                                pte_t pte, int dirty);
  43
  44 #define __HAVE_ARCH_HUGE_PTEP_GET
  45 pte_t huge_ptep_get(pte_t *ptep);
  46
  47 pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
  48 #define arch_make_huge_pte arch_make_huge_pte
  49
  50 #endif /*CONFIG_RISCV_ISA_SVNAPOT*/
  51
  52 #include <asm-generic/hugetlb.h>
  53
  54 #endif /* _ASM_RISCV_HUGETLB_H */