81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/* 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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#else /* !CONFIG_HUGETLB_PAGE */
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static inline int pmd_huge(pmd_t pmd) { return 0; }
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static inline int pud_huge(pud_t pud) { return 0; }
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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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