1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * arch/arm64/include/asm/hugetlb.h 4 * 5 * Copyright (C) 2013 Linaro Ltd. 6 * 7 * Based on arch/x86/include/asm/hugetlb.h 8 */ 9 10 #ifndef __ASM_HUGETLB_H 11 #define __ASM_HUGETLB_H 12 13 #include <asm/page.h> 14 15 #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION 16 #define arch_hugetlb_migration_supported arch_hugetlb_migration_supported 17 extern bool arch_hugetlb_migration_supported(struct hstate *h); 18 #endif 19 20 static inline void arch_clear_hugepage_flags(struct page *page) 21 { 22 clear_bit(PG_dcache_clean, &page->flags); 23 } 24 #define arch_clear_hugepage_flags arch_clear_hugepage_flags 25 26 extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, 27 struct page *page, int writable); 28 #define arch_make_huge_pte arch_make_huge_pte 29 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT 30 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 31 pte_t *ptep, pte_t pte); 32 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 33 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, 34 unsigned long addr, pte_t *ptep, 35 pte_t pte, int dirty); 36 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 37 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 38 unsigned long addr, pte_t *ptep); 39 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT 40 extern void huge_ptep_set_wrprotect(struct mm_struct *mm, 41 unsigned long addr, pte_t *ptep); 42 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 43 extern void huge_ptep_clear_flush(struct vm_area_struct *vma, 44 unsigned long addr, pte_t *ptep); 45 #define __HAVE_ARCH_HUGE_PTE_CLEAR 46 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr, 47 pte_t *ptep, unsigned long sz); 48 extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr, 49 pte_t *ptep, pte_t pte, unsigned long sz); 50 #define set_huge_swap_pte_at set_huge_swap_pte_at 51 52 #include <asm-generic/hugetlb.h> 53 54 #endif /* __ASM_HUGETLB_H */ 55