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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
bee8b3b5 AK |
2 | #ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_H |
3 | #define _ASM_POWERPC_BOOK3S_64_HUGETLB_H | |
48483760 AK |
4 | /* |
5 | * For radix we want generic code to handle hugetlb. But then if we want | |
6 | * both hash and radix to be enabled together we need to workaround the | |
7 | * limitations. | |
8 | */ | |
9 | void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); | |
10 | void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); | |
11 | extern unsigned long | |
12 | radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | |
13 | unsigned long len, unsigned long pgoff, | |
14 | unsigned long flags); | |
fbfa26d8 AK |
15 | |
16 | static inline int hstate_get_psize(struct hstate *hstate) | |
17 | { | |
18 | unsigned long shift; | |
19 | ||
20 | shift = huge_page_shift(hstate); | |
21 | if (shift == mmu_psize_defs[MMU_PAGE_2M].shift) | |
22 | return MMU_PAGE_2M; | |
23 | else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) | |
24 | return MMU_PAGE_1G; | |
ccf17c8b AK |
25 | else if (shift == mmu_psize_defs[MMU_PAGE_16M].shift) |
26 | return MMU_PAGE_16M; | |
27 | else if (shift == mmu_psize_defs[MMU_PAGE_16G].shift) | |
28 | return MMU_PAGE_16G; | |
fbfa26d8 AK |
29 | else { |
30 | WARN(1, "Wrong huge page shift\n"); | |
31 | return mmu_virtual_psize; | |
32 | } | |
33 | } | |
049d567a AK |
34 | |
35 | #define arch_make_huge_pte arch_make_huge_pte | |
36 | static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, | |
37 | struct page *page, int writable) | |
38 | { | |
39 | unsigned long page_shift; | |
40 | ||
41 | if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) | |
42 | return entry; | |
43 | ||
44 | page_shift = huge_page_shift(hstate_vma(vma)); | |
45 | /* | |
46 | * We don't support 1G hugetlb pages yet. | |
47 | */ | |
48 | VM_WARN_ON(page_shift == mmu_psize_defs[MMU_PAGE_1G].shift); | |
49 | if (page_shift == mmu_psize_defs[MMU_PAGE_2M].shift) | |
ddb014b6 | 50 | return __pte(pte_val(entry) | R_PAGE_LARGE); |
049d567a AK |
51 | else |
52 | return entry; | |
53 | } | |
40692eb5 AK |
54 | |
55 | #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE | |
56 | static inline bool gigantic_page_supported(void) | |
57 | { | |
4ae279c2 | 58 | return true; |
40692eb5 AK |
59 | } |
60 | #endif | |
61 | ||
48483760 | 62 | #endif |