| /* 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)); | |
| } | |
| static inline int pgd_huge(pgd_t pgd) | |
| { | |
| /* | |
| * leaf pte for huge page | |
| */ | |
| return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); | |
| } | |
| #define pgd_huge pgd_huge | |
| /* | |
| * 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 */ |