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