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- #ifndef _ASM_X86_HUGETLB_H
- #define _ASM_X86_HUGETLB_H
- #include <asm/page.h>
- #include <asm-generic/hugetlb.h>
- #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE)
- static inline int is_hugepage_only_range(struct mm_struct *mm,
- unsigned long addr,
- unsigned long len) {
- return 0;
- }
- /*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
- static inline int prepare_hugepage_range(struct file *file,
- unsigned long addr, unsigned long len)
- {
- struct hstate *h = hstate_file(file);
- if (len & ~huge_page_mask(h))
- return -EINVAL;
- if (addr & ~huge_page_mask(h))
- return -EINVAL;
- return 0;
- }
- static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
- unsigned long addr, unsigned long end,
- unsigned long floor,
- unsigned long ceiling)
- {
- free_pgd_range(tlb, addr, end, floor, ceiling);
- }
- static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte)
- {
- set_pte_at(mm, addr, ptep, pte);
- }
- static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
- unsigned long addr, pte_t *ptep)
- {
- return ptep_get_and_clear(mm, addr, ptep);
- }
- static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep)
- {
- ptep_clear_flush(vma, addr, ptep);
- }
- static inline int huge_pte_none(pte_t pte)
- {
- return pte_none(pte);
- }
- static inline pte_t huge_pte_wrprotect(pte_t pte)
- {
- return pte_wrprotect(pte);
- }
- static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
- unsigned long addr, pte_t *ptep)
- {
- ptep_set_wrprotect(mm, addr, ptep);
- }
- static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep,
- pte_t pte, int dirty)
- {
- return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
- }
- static inline pte_t huge_ptep_get(pte_t *ptep)
- {
- return *ptep;
- }
- static inline void arch_clear_hugepage_flags(struct page *page)
- {
- }
- #endif /* _ASM_X86_HUGETLB_H */
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