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review.trustedfirmware.org / hafnium / third_party / linux.git / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / arch / arm64 / include / asm / hugetlb.h
blob: 2eb6c234d594845a19cae9253831e11af001bb16 [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0-only */
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]8 */
9
10#ifndef __ASM_HUGETLB_H
11#define __ASM_HUGETLB_H
12
13#include <asm/page.h>
14
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]15#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
16#define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
17extern bool arch_hugetlb_migration_supported(struct hstate *h);
18#endif
19
20#define __HAVE_ARCH_HUGE_PTEP_GET
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]21static inline pte_t huge_ptep_get(pte_t *ptep)
22{
23 return READ_ONCE(*ptep);
24}
25
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]26static inline int is_hugepage_only_range(struct mm_struct *mm,
27 unsigned long addr, unsigned long len)
28{
29 return 0;
30}
31
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]32static inline void arch_clear_hugepage_flags(struct page *page)
33{
34 clear_bit(PG_dcache_clean, &page->flags);
35}
36
37extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
38 struct page *page, int writable);
39#define arch_make_huge_pte arch_make_huge_pte
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]40#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]41extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
42 pte_t *ptep, pte_t pte);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]43#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]44extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
45 unsigned long addr, pte_t *ptep,
46 pte_t pte, int dirty);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]47#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]48extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
49 unsigned long addr, pte_t *ptep);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]50#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]51extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
52 unsigned long addr, pte_t *ptep);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]53#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]54extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
55 unsigned long addr, pte_t *ptep);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]56#define __HAVE_ARCH_HUGE_PTE_CLEAR
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]57extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
58 pte_t *ptep, unsigned long sz);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]59extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
60 pte_t *ptep, pte_t pte, unsigned long sz);
61#define set_huge_swap_pte_at set_huge_swap_pte_at
62
63#include <asm-generic/hugetlb.h>
64
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]65#endif /* __ASM_HUGETLB_H */