| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_SPARC64_HUGETLB_H |
| #define _ASM_SPARC64_HUGETLB_H |
| |
| #include <asm/page.h> |
| #include <asm-generic/hugetlb.h> |
| |
| #ifdef CONFIG_HUGETLB_PAGE |
| struct pud_huge_patch_entry { |
| unsigned int addr; |
| unsigned int insn; |
| }; |
| extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; |
| #endif |
| |
| void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| pte_t *ptep, pte_t pte); |
| |
| pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, |
| pte_t *ptep); |
| |
| 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 huge_ptep_clear_flush(struct vm_area_struct *vma, |
| unsigned long addr, pte_t *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) |
| { |
| pte_t old_pte = *ptep; |
| set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); |
| } |
| |
| static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| unsigned long addr, pte_t *ptep, |
| pte_t pte, int dirty) |
| { |
| int changed = !pte_same(*ptep, pte); |
| if (changed) { |
| set_huge_pte_at(vma->vm_mm, addr, ptep, pte); |
| flush_tlb_page(vma, addr); |
| } |
| return changed; |
| } |
| |
| static inline pte_t huge_ptep_get(pte_t *ptep) |
| { |
| return *ptep; |
| } |
| |
| static inline void arch_clear_hugepage_flags(struct page *page) |
| { |
| } |
| |
| void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, |
| unsigned long end, unsigned long floor, |
| unsigned long ceiling); |
| |
| #endif /* _ASM_SPARC64_HUGETLB_H */ |
