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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_HUGETLB_H
3#define _ASM_POWERPC_HUGETLB_H
4
5#ifdef CONFIG_HUGETLB_PAGE
6#include <asm/page.h>
7
8#ifdef CONFIG_PPC_BOOK3S_64
9#include <asm/book3s/64/hugetlb.h>
10#elif defined(CONFIG_PPC_E500)
11#include <asm/nohash/hugetlb-e500.h>
12#elif defined(CONFIG_PPC_8xx)
13#include <asm/nohash/32/hugetlb-8xx.h>
14#endif /* CONFIG_PPC_BOOK3S_64 */
15
16extern bool hugetlb_disabled;
17
18void __init hugetlbpage_init_defaultsize(void);
19
20int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
21 unsigned long len);
22
23static inline int is_hugepage_only_range(struct mm_struct *mm,
24 unsigned long addr,
25 unsigned long len)
26{
27 if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled())
28 return slice_is_hugepage_only_range(mm, addr, len);
29 return 0;
30}
31#define is_hugepage_only_range is_hugepage_only_range
32
33#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
34void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
35 pte_t pte, unsigned long sz);
36
37#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
38static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
39 unsigned long addr, pte_t *ptep)
40{
41 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
42}
43
44#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
45static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
46 unsigned long addr, pte_t *ptep)
47{
48 pte_t pte;
49
50 pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
51 flush_hugetlb_page(vma, addr);
52 return pte;
53}
54
55#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
56int huge_ptep_set_access_flags(struct vm_area_struct *vma,
57 unsigned long addr, pte_t *ptep,
58 pte_t pte, int dirty);
59
60void gigantic_hugetlb_cma_reserve(void) __init;
61#include <asm-generic/hugetlb.h>
62
63#else /* ! CONFIG_HUGETLB_PAGE */
64static inline void flush_hugetlb_page(struct vm_area_struct *vma,
65 unsigned long vmaddr)
66{
67}
68
69static inline void __init gigantic_hugetlb_cma_reserve(void)
70{
71}
72
73static inline void __init hugetlbpage_init_defaultsize(void)
74{
75}
76#endif /* CONFIG_HUGETLB_PAGE */
77
78#endif /* _ASM_POWERPC_HUGETLB_H */