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 pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags); 27 #define arch_make_huge_pte arch_make_huge_pte 28 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT 29 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 30 pte_t *ptep, pte_t pte); 31 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 32 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, 33 unsigned long addr, pte_t *ptep, 34 pte_t pte, int dirty); 35 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 36 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 37 unsigned long addr, pte_t *ptep); 38 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT 39 extern void huge_ptep_set_wrprotect(struct mm_struct *mm, 40 unsigned long addr, pte_t *ptep); 41 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 42 extern pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, 43 unsigned long addr, pte_t *ptep); 44 #define __HAVE_ARCH_HUGE_PTE_CLEAR 45 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr, 46 pte_t *ptep, unsigned long sz); 47 #define __HAVE_ARCH_HUGE_PTEP_GET 48 extern pte_t huge_ptep_get(pte_t *ptep); 49 50 void __init arm64_hugetlb_cma_reserve(void); 51 52 #define huge_ptep_modify_prot_start huge_ptep_modify_prot_start 53 extern pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma, 54 unsigned long addr, pte_t *ptep); 55 56 #define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit 57 extern void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, 58 unsigned long addr, pte_t *ptep, 59 pte_t old_pte, pte_t new_pte); 60 61 #include <asm-generic/hugetlb.h> 62 63 #endif /* __ASM_HUGETLB_H */ 64