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Linux/arch/parisc/include/asm/hugetlb.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef _ASM_PARISC64_HUGETLB_H
  3 #define _ASM_PARISC64_HUGETLB_H
  4 
  5 #include <asm/page.h>
  6 
  7 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
  8 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  9                      pte_t *ptep, pte_t pte);
 10 
 11 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 12 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 13                               pte_t *ptep);
 14 
 15 static inline int is_hugepage_only_range(struct mm_struct *mm,
 16                                          unsigned long addr,
 17                                          unsigned long len) {
 18         return 0;
 19 }
 20 
 21 /*
 22  * If the arch doesn't supply something else, assume that hugepage
 23  * size aligned regions are ok without further preparation.
 24  */
 25 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 26 static inline int prepare_hugepage_range(struct file *file,
 27                         unsigned long addr, unsigned long len)
 28 {
 29         if (len & ~HPAGE_MASK)
 30                 return -EINVAL;
 31         if (addr & ~HPAGE_MASK)
 32                 return -EINVAL;
 33         return 0;
 34 }
 35 
 36 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 37 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 38                                          unsigned long addr, pte_t *ptep)
 39 {
 40 }
 41 
 42 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 43 void huge_ptep_set_wrprotect(struct mm_struct *mm,
 44                                            unsigned long addr, pte_t *ptep);
 45 
 46 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 47 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 48                                              unsigned long addr, pte_t *ptep,
 49                                              pte_t pte, int dirty);
 50 
 51 static inline void arch_clear_hugepage_flags(struct page *page)
 52 {
 53 }
 54 
 55 #include <asm-generic/hugetlb.h>
 56 
 57 #endif /* _ASM_PARISC64_HUGETLB_H */
 58 

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