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linux_kernel
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arch
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parisc
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asm
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hugetlb.h

hugetlb.h 1.5 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef _ASM_PARISC64_HUGETLB_H
    3. 

  3. #define _ASM_PARISC64_HUGETLB_H
    4. 

  4. 

  5. #include <asm/page.h>
    6. 

  6. 

  7. #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
    8. 

  8. void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
    9. 

  9. 		     pte_t *ptep, pte_t pte);
    10. 

  10. 

  11. #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
    12. 

  12. pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
    13. 

  13. 			      pte_t *ptep);
    14. 

  14. 

  15. static inline int is_hugepage_only_range(struct mm_struct *mm,
    16. 

  16. 					 unsigned long addr,
    17. 

  17. 					 unsigned long len) {
    18. 

  18. 	return 0;
    19. 

  19. }
    20. 

  20. 

  21. /*
    22. 

  22.  * If the arch doesn't supply something else, assume that hugepage
    23. 

  23.  * size aligned regions are ok without further preparation.
    24. 

  24.  */
    25. 

  25. #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
    26. 

  26. static inline int prepare_hugepage_range(struct file *file,
    27. 

  27. 			unsigned long addr, unsigned long len)
    28. 

  28. {
    29. 

  29. 	if (len & ~HPAGE_MASK)
    30. 

  30. 		return -EINVAL;
    31. 

  31. 	if (addr & ~HPAGE_MASK)
    32. 

  32. 		return -EINVAL;
    33. 

  33. 	return 0;
    34. 

  34. }
    35. 

  35. 

  36. #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
    37. 

  37. static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
    38. 

  38. 					 unsigned long addr, pte_t *ptep)
    39. 

  39. {
    40. 

  40. }
    41. 

  41. 

  42. #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
    43. 

  43. void huge_ptep_set_wrprotect(struct mm_struct *mm,
    44. 

  44. 					   unsigned long addr, pte_t *ptep);
    45. 

  45. 

  46. #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
    47. 

  47. int huge_ptep_set_access_flags(struct vm_area_struct *vma,
    48. 

  48. 					     unsigned long addr, pte_t *ptep,
    49. 

  49. 					     pte_t pte, int dirty);
    50. 

  50. 

  51. static inline void arch_clear_hugepage_flags(struct page *page)
    52. 

  52. {
    53. 

  53. }
    54. 

  54. 

  55. #include <asm-generic/hugetlb.h>
    56. 

  56. 

  57. #endif /* _ASM_PARISC64_HUGETLB_H */
    58.