| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H |
| #define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H |
| |
| #ifndef __ASSEMBLY__ |
| #ifdef CONFIG_HUGETLB_PAGE |
| /* |
| * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have |
| * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD; |
| * |
| * Defined in such a way that we can optimize away code block at build time |
| * if CONFIG_HUGETLB_PAGE=n. |
| * |
| * returns true for pmd migration entries, THP, devmap, hugetlb |
| * But compile time dependent on CONFIG_HUGETLB_PAGE |
| */ |
| static inline int pmd_huge(pmd_t pmd) |
| { |
| /* |
| * leaf pte for huge page |
| */ |
| return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); |
| } |
| |
| static inline int pud_huge(pud_t pud) |
| { |
| /* |
| * leaf pte for huge page |
| */ |
| return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); |
| } |
| |
| /* |
| * With 64k page size, we have hugepage ptes in the pgd 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) |
| { |
| return 0; |
| } |
| |
| #define is_hugepd(pdep) 0 |
| |
| /* |
| * This should never get called |
| */ |
| static inline int get_hugepd_cache_index(int index) |
| { |
| BUG(); |
| } |
| |
| #endif /* CONFIG_HUGETLB_PAGE */ |
| |
| static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr, |
| unsigned long pfn, pgprot_t prot) |
| { |
| if (radix_enabled()) |
| BUG(); |
| return hash__remap_4k_pfn(vma, addr, pfn, prot); |
| } |
| #endif /* __ASSEMBLY__ */ |
| #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */ |
