| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _ASM_SPARC64_HUGETLB_H |
| 3 | #define _ASM_SPARC64_HUGETLB_H |
| 4 | |
| 5 | #include <asm/page.h> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | |
| 7 | #ifdef CONFIG_HUGETLB_PAGE |
| 8 | struct pud_huge_patch_entry { |
| 9 | unsigned int addr; |
| 10 | unsigned int insn; |
| 11 | }; |
| 12 | extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; |
| 13 | #endif |
| 14 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 15 | #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 16 | void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| 17 | pte_t *ptep, pte_t pte); |
| 18 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 19 | #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 20 | pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, |
| 21 | pte_t *ptep); |
| 22 | |
| 23 | static inline int is_hugepage_only_range(struct mm_struct *mm, |
| 24 | unsigned long addr, |
| 25 | unsigned long len) { |
| 26 | return 0; |
| 27 | } |
| 28 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 29 | #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 30 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
| 31 | unsigned long addr, pte_t *ptep) |
| 32 | { |
| 33 | } |
| 34 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 35 | #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 36 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, |
| 37 | unsigned long addr, pte_t *ptep) |
| 38 | { |
| 39 | pte_t old_pte = *ptep; |
| 40 | set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); |
| 41 | } |
| 42 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 43 | #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 44 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| 45 | unsigned long addr, pte_t *ptep, |
| 46 | pte_t pte, int dirty) |
| 47 | { |
| 48 | int changed = !pte_same(*ptep, pte); |
| 49 | if (changed) { |
| 50 | set_huge_pte_at(vma->vm_mm, addr, ptep, pte); |
| 51 | flush_tlb_page(vma, addr); |
| 52 | } |
| 53 | return changed; |
| 54 | } |
| 55 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 56 | static inline void arch_clear_hugepage_flags(struct page *page) |
| 57 | { |
| 58 | } |
| 59 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 60 | #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 61 | void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, |
| 62 | unsigned long end, unsigned long floor, |
| 63 | unsigned long ceiling); |
| 64 | |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 65 | #include <asm-generic/hugetlb.h> |
| 66 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 67 | #endif /* _ASM_SPARC64_HUGETLB_H */ |