projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a9252aae AK |
1 | #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H |
| 2 | #define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H | |
| 3 | ||
| 4 | #ifndef __ASSEMBLY__ | |
| 5 | #ifdef CONFIG_HUGETLB_PAGE | |
| 6 | /* | |
| 7 | * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have | |
| 8 | * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD; | |
| 9 | * | |
| 10 | * Defined in such a way that we can optimize away code block at build time | |
| 11 | * if CONFIG_HUGETLB_PAGE=n. | |
| 12 | */ | |
| 13 | static inline int pmd_huge(pmd_t pmd) | |
| 14 | { | |
| 15 | /* | |
| 16 | * leaf pte for huge page | |
| 17 | */ | |
| 66c570f5 | 18 | return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); |
| a9252aae AK |
19 | } |
| 20 | ||
| 21 | static inline int pud_huge(pud_t pud) | |
| 22 | { | |
| 23 | /* | |
| 24 | * leaf pte for huge page | |
| 25 | */ | |
| 66c570f5 | 26 | return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); |
| a9252aae AK |
27 | } |
| 28 | ||
| 29 | static inline int pgd_huge(pgd_t pgd) | |
| 30 | { | |
| 31 | /* | |
| 32 | * leaf pte for huge page | |
| 33 | */ | |
| 66c570f5 | 34 | return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); |
| a9252aae AK |
35 | } |
| 36 | #define pgd_huge pgd_huge | |
| 37 | ||
| 38 | #ifdef CONFIG_DEBUG_VM | |
| 39 | extern int hugepd_ok(hugepd_t hpd); | |
| 40 | #define is_hugepd(hpd) (hugepd_ok(hpd)) | |
| 41 | #else | |
| 42 | /* | |
| 43 | * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't | |
| 44 | * need to setup hugepage directory for them. Our pte and page directory format | |
| 45 | * enable us to have this enabled. | |
| 46 | */ | |
| 47 | static inline int hugepd_ok(hugepd_t hpd) | |
| 48 | { | |
| 49 | return 0; | |
| 50 | } | |
| 51 | #define is_hugepd(pdep) 0 | |
| 52 | #endif /* CONFIG_DEBUG_VM */ | |
| 53 | ||
| 54 | #endif /* CONFIG_HUGETLB_PAGE */ | |
| 55 | ||
| 6cc1a0ee AK |
56 | static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr, |
| 57 | unsigned long pfn, pgprot_t prot) | |
| 58 | { | |
| 59 | if (radix_enabled()) | |
| 60 | BUG(); | |
| 61 | return hash__remap_4k_pfn(vma, addr, pfn, prot); | |
| 6cc1a0ee | 62 | } |
| a9252aae AK |
63 | #endif /* __ASSEMBLY__ */ |
| 64 | #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */ |