| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 1 | #ifndef _ASM_SPARC64_HUGETLB_H |
| 2 | #define _ASM_SPARC64_HUGETLB_H |
| 3 | |
| 4 | #include <asm/page.h> |
| 5 | |
| 6 | |
| 7 | void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| 8 | pte_t *ptep, pte_t pte); |
| 9 | |
| 10 | pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, |
| 11 | pte_t *ptep); |
| 12 | |
| David Miller | 9e695d2 | 2012-10-08 16:34:29 -0700 | [diff] [blame] | 13 | static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) |
| 14 | { |
| David Miller | 9e695d2 | 2012-10-08 16:34:29 -0700 | [diff] [blame] | 15 | } |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 16 | |
| 17 | static inline int is_hugepage_only_range(struct mm_struct *mm, |
| 18 | unsigned long addr, |
| 19 | unsigned long len) { |
| 20 | return 0; |
| 21 | } |
| 22 | |
| 23 | /* |
| 24 | * If the arch doesn't supply something else, assume that hugepage |
| 25 | * size aligned regions are ok without further preparation. |
| 26 | */ |
| Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 27 | static inline int prepare_hugepage_range(struct file *file, |
| 28 | unsigned long addr, unsigned long len) |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 29 | { |
| 30 | if (len & ~HPAGE_MASK) |
| 31 | return -EINVAL; |
| 32 | if (addr & ~HPAGE_MASK) |
| 33 | return -EINVAL; |
| 34 | return 0; |
| 35 | } |
| 36 | |
| Jan Beulich | 42b7772 | 2008-07-23 21:27:10 -0700 | [diff] [blame] | 37 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 38 | unsigned long addr, unsigned long end, |
| 39 | unsigned long floor, |
| 40 | unsigned long ceiling) |
| 41 | { |
| 42 | free_pgd_range(tlb, addr, end, floor, ceiling); |
| 43 | } |
| 44 | |
| 45 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
| 46 | unsigned long addr, pte_t *ptep) |
| 47 | { |
| 48 | } |
| 49 | |
| 50 | static inline int huge_pte_none(pte_t pte) |
| 51 | { |
| 52 | return pte_none(pte); |
| 53 | } |
| 54 | |
| 55 | static inline pte_t huge_pte_wrprotect(pte_t pte) |
| 56 | { |
| 57 | return pte_wrprotect(pte); |
| 58 | } |
| 59 | |
| 60 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, |
| 61 | unsigned long addr, pte_t *ptep) |
| 62 | { |
| Dave Kleikamp | 6cb9c36 | 2012-12-17 11:52:47 -0600 | [diff] [blame] | 63 | pte_t old_pte = *ptep; |
| 64 | set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| 68 | unsigned long addr, pte_t *ptep, |
| 69 | pte_t pte, int dirty) |
| 70 | { |
| Dave Kleikamp | 6cb9c36 | 2012-12-17 11:52:47 -0600 | [diff] [blame] | 71 | int changed = !pte_same(*ptep, pte); |
| 72 | if (changed) { |
| 73 | set_huge_pte_at(vma->vm_mm, addr, ptep, pte); |
| 74 | flush_tlb_page(vma, addr); |
| 75 | } |
| 76 | return changed; |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | static inline pte_t huge_ptep_get(pte_t *ptep) |
| 80 | { |
| 81 | return *ptep; |
| 82 | } |
| 83 | |
| 84 | static inline int arch_prepare_hugepage(struct page *page) |
| 85 | { |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | static inline void arch_release_hugepage(struct page *page) |
| 90 | { |
| 91 | } |
| 92 | |
| Will Deacon | 5d3a551 | 2012-10-08 16:29:32 -0700 | [diff] [blame] | 93 | static inline void arch_clear_hugepage_flags(struct page *page) |
| 94 | { |
| 95 | } |
| 96 | |
| Sam Ravnborg | a00736e | 2008-06-19 20:26:19 +0200 | [diff] [blame] | 97 | #endif /* _ASM_SPARC64_HUGETLB_H */ |