1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef _ASM_GENERIC_HUGETLB_H
  3#define _ASM_GENERIC_HUGETLB_H
  4
  5static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
  6{
  7	return mk_pte(page, pgprot);
  8}
  9
 10static inline unsigned long huge_pte_write(pte_t pte)
 11{
 12	return pte_write(pte);
 13}
 14
 15static inline unsigned long huge_pte_dirty(pte_t pte)
 16{
 17	return pte_dirty(pte);
 18}
 19
 20static inline pte_t huge_pte_mkwrite(pte_t pte)
 21{
 22	return pte_mkwrite(pte);
 23}
 24
 25static inline pte_t huge_pte_mkdirty(pte_t pte)
 26{
 27	return pte_mkdirty(pte);
 28}
 29
 30static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
 31{
 32	return pte_modify(pte, newprot);
 33}
 34
 35#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
 36static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 37		    pte_t *ptep, unsigned long sz)
 38{
 39	pte_clear(mm, addr, ptep);
 40}
 41#endif
 42
 43#ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 44static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
 45		unsigned long addr, unsigned long end,
 46		unsigned long floor, unsigned long ceiling)
 47{
 48	free_pgd_range(tlb, addr, end, floor, ceiling);
 49}
 50#endif
 51
 52#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
 53static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 54		pte_t *ptep, pte_t pte)
 55{
 56	set_pte_at(mm, addr, ptep, pte);
 57}
 58#endif
 59
 60#ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 61static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 62		unsigned long addr, pte_t *ptep)
 63{
 64	return ptep_get_and_clear(mm, addr, ptep);
 65}
 66#endif
 67
 68#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 69static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 70		unsigned long addr, pte_t *ptep)
 71{
 72	ptep_clear_flush(vma, addr, ptep);
 73}
 74#endif
 75
 76#ifndef __HAVE_ARCH_HUGE_PTE_NONE
 77static inline int huge_pte_none(pte_t pte)
 78{
 79	return pte_none(pte);
 80}
 81#endif
 82
 83#ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
 84static inline pte_t huge_pte_wrprotect(pte_t pte)
 85{
 86	return pte_wrprotect(pte);
 87}
 88#endif
 89
 90#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 91static inline int prepare_hugepage_range(struct file *file,
 92		unsigned long addr, unsigned long len)
 93{
 94	struct hstate *h = hstate_file(file);
 95
 96	if (len & ~huge_page_mask(h))
 97		return -EINVAL;
 98	if (addr & ~huge_page_mask(h))
 99		return -EINVAL;
100
101	return 0;
102}
103#endif
104
105#ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
106static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
107		unsigned long addr, pte_t *ptep)
108{
109	ptep_set_wrprotect(mm, addr, ptep);
110}
111#endif
112
113#ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
114static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
115		unsigned long addr, pte_t *ptep,
116		pte_t pte, int dirty)
117{
118	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
119}
120#endif
121
122#ifndef __HAVE_ARCH_HUGE_PTEP_GET
123static inline pte_t huge_ptep_get(pte_t *ptep)
124{
125	return ptep_get(ptep);
126}
127#endif
128
129#ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
130static inline bool gigantic_page_runtime_supported(void)
131{
132	return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE);
133}
134#endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */
135
136#endif /* _ASM_GENERIC_HUGETLB_H */