projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| a9252aae AK |
2 | #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H |
| 3 | #define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H | |
| 4 | /* | |
| 5 | * hash 4k can't share hugetlb and also doesn't support THP | |
| 6 | */ | |
| c0a6c719 AK |
7 | #ifndef __ASSEMBLY__ |
| 8 | #ifdef CONFIG_HUGETLB_PAGE | |
| 9 | static inline int pmd_huge(pmd_t pmd) | |
| 10 | { | |
| 11 | /* | |
| 12 | * leaf pte for huge page | |
| 13 | */ | |
| 14 | if (radix_enabled()) | |
| 66c570f5 | 15 | return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); |
| c0a6c719 AK |
16 | return 0; |
| 17 | } | |
| 18 | ||
| 19 | static inline int pud_huge(pud_t pud) | |
| 20 | { | |
| 21 | /* | |
| 22 | * leaf pte for huge page | |
| 23 | */ | |
| 24 | if (radix_enabled()) | |
| 66c570f5 | 25 | return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); |
| c0a6c719 AK |
26 | return 0; |
| 27 | } | |
| 28 | ||
| 29 | static inline int pgd_huge(pgd_t pgd) | |
| 30 | { | |
| 31 | /* | |
| 32 | * leaf pte for huge page | |
| 33 | */ | |
| 34 | if (radix_enabled()) | |
| 66c570f5 | 35 | return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); |
| c0a6c719 AK |
36 | return 0; |
| 37 | } | |
| 38 | #define pgd_huge pgd_huge | |
| 39 | /* | |
| 40 | * With radix , we have hugepage ptes in the pud and pmd entries. We don't | |
| 41 | * need to setup hugepage directory for them. Our pte and page directory format | |
| 42 | * enable us to have this enabled. | |
| 43 | */ | |
| 44 | static inline int hugepd_ok(hugepd_t hpd) | |
| 45 | { | |
| 46 | if (radix_enabled()) | |
| 47 | return 0; | |
| 48 | return hash__hugepd_ok(hpd); | |
| 49 | } | |
| 50 | #define is_hugepd(hpd) (hugepd_ok(hpd)) | |
| aad71e39 | 51 | |
| fadd03c6 AK |
52 | /* |
| 53 | * 16M and 16G huge page directory tables are allocated from slab cache | |
| 54 | * | |
| 55 | */ | |
| 56 | #define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24) | |
| 57 | #define H_16G_CACHE_INDEX \ | |
| 58 | (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34) | |
| 59 | ||
| 60 | static inline int get_hugepd_cache_index(int index) | |
| 61 | { | |
| 62 | switch (index) { | |
| 63 | case H_16M_CACHE_INDEX: | |
| 64 | return HTLB_16M_INDEX; | |
| 65 | case H_16G_CACHE_INDEX: | |
| 66 | return HTLB_16G_INDEX; | |
| 67 | default: | |
| 68 | BUG(); | |
| 69 | } | |
| 70 | /* should not reach */ | |
| 71 | } | |
| 72 | ||
| aad71e39 ME |
73 | #else /* !CONFIG_HUGETLB_PAGE */ |
| 74 | static inline int pmd_huge(pmd_t pmd) { return 0; } | |
| 75 | static inline int pud_huge(pud_t pud) { return 0; } | |
| c0a6c719 | 76 | #endif /* CONFIG_HUGETLB_PAGE */ |
| aad71e39 | 77 | |
| c0a6c719 | 78 | #endif /* __ASSEMBLY__ */ |
| a9252aae AK |
79 | |
| 80 | #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */ |