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77 lines
1.7 KiB
77 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H |
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#define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H |
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/* |
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* hash 4k can't share hugetlb and also doesn't support THP |
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*/ |
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#ifndef __ASSEMBLY__ |
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#ifdef CONFIG_HUGETLB_PAGE |
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static inline int pmd_huge(pmd_t pmd) |
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{ |
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/* |
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* leaf pte for huge page |
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*/ |
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if (radix_enabled()) |
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return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); |
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return 0; |
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} |
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static inline int pud_huge(pud_t pud) |
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{ |
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/* |
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* leaf pte for huge page |
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*/ |
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if (radix_enabled()) |
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return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); |
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return 0; |
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} |
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static inline int pgd_huge(pgd_t pgd) |
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{ |
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/* |
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* leaf pte for huge page |
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*/ |
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if (radix_enabled()) |
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return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); |
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return 0; |
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} |
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#define pgd_huge pgd_huge |
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/* |
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* With radix , we have hugepage ptes in the pud and pmd entries. We don't |
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* need to setup hugepage directory for them. Our pte and page directory format |
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* enable us to have this enabled. |
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*/ |
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static inline int hugepd_ok(hugepd_t hpd) |
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{ |
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if (radix_enabled()) |
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return 0; |
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return hash__hugepd_ok(hpd); |
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} |
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#define is_hugepd(hpd) (hugepd_ok(hpd)) |
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/* |
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* 16M and 16G huge page directory tables are allocated from slab cache |
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* |
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*/ |
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#define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24) |
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#define H_16G_CACHE_INDEX \ |
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(PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34) |
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static inline int get_hugepd_cache_index(int index) |
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{ |
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switch (index) { |
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case H_16M_CACHE_INDEX: |
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return HTLB_16M_INDEX; |
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case H_16G_CACHE_INDEX: |
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return HTLB_16G_INDEX; |
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default: |
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BUG(); |
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} |
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/* should not reach */ |
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} |
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#endif /* CONFIG_HUGETLB_PAGE */ |
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#endif /* __ASSEMBLY__ */ |
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#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */
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