1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * arch/arm64/include/asm/hugetlb.h
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2013 Linaro Ltd.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Based on arch/x86/include/asm/hugetlb.h
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #ifndef __ASM_HUGETLB_H
11*4882a593Smuzhiyun #define __ASM_HUGETLB_H
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <asm/page.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
16*4882a593Smuzhiyun #define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
17*4882a593Smuzhiyun extern bool arch_hugetlb_migration_supported(struct hstate *h);
18*4882a593Smuzhiyun #endif
19*4882a593Smuzhiyun
arch_clear_hugepage_flags(struct page * page)20*4882a593Smuzhiyun static inline void arch_clear_hugepage_flags(struct page *page)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun clear_bit(PG_dcache_clean, &page->flags);
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun #define arch_clear_hugepage_flags arch_clear_hugepage_flags
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
27*4882a593Smuzhiyun struct page *page, int writable);
28*4882a593Smuzhiyun #define arch_make_huge_pte arch_make_huge_pte
29*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
30*4882a593Smuzhiyun extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
31*4882a593Smuzhiyun pte_t *ptep, pte_t pte);
32*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
33*4882a593Smuzhiyun extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
34*4882a593Smuzhiyun unsigned long addr, pte_t *ptep,
35*4882a593Smuzhiyun pte_t pte, int dirty);
36*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
37*4882a593Smuzhiyun extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
38*4882a593Smuzhiyun unsigned long addr, pte_t *ptep);
39*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
40*4882a593Smuzhiyun extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
41*4882a593Smuzhiyun unsigned long addr, pte_t *ptep);
42*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
43*4882a593Smuzhiyun extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
44*4882a593Smuzhiyun unsigned long addr, pte_t *ptep);
45*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTE_CLEAR
46*4882a593Smuzhiyun extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
47*4882a593Smuzhiyun pte_t *ptep, unsigned long sz);
48*4882a593Smuzhiyun extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
49*4882a593Smuzhiyun pte_t *ptep, pte_t pte, unsigned long sz);
50*4882a593Smuzhiyun #define set_huge_swap_pte_at set_huge_swap_pte_at
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun void __init arm64_hugetlb_cma_reserve(void);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun #include <asm-generic/hugetlb.h>
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun #endif /* __ASM_HUGETLB_H */
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