projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| bee8b3b5 AK |
2 | #ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_H |
| 3 | #define _ASM_POWERPC_BOOK3S_64_HUGETLB_H | |
| 48483760 AK |
4 | /* |
| 5 | * For radix we want generic code to handle hugetlb. But then if we want | |
| 6 | * both hash and radix to be enabled together we need to workaround the | |
| 7 | * limitations. | |
| 8 | */ | |
| 9 | void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); | |
| 10 | void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); | |
| 11 | extern unsigned long | |
| 12 | radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | |
| 13 | unsigned long len, unsigned long pgoff, | |
| 14 | unsigned long flags); | |
| fbfa26d8 | 15 | |
| 8ef5cbde AK |
16 | extern void radix__huge_ptep_modify_prot_commit(struct vm_area_struct *vma, |
| 17 | unsigned long addr, pte_t *ptep, | |
| 18 | pte_t old_pte, pte_t pte); | |
| 19 | ||
| fbfa26d8 AK |
20 | static inline int hstate_get_psize(struct hstate *hstate) |
| 21 | { | |
| 22 | unsigned long shift; | |
| 23 | ||
| 24 | shift = huge_page_shift(hstate); | |
| 25 | if (shift == mmu_psize_defs[MMU_PAGE_2M].shift) | |
| 26 | return MMU_PAGE_2M; | |
| 27 | else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) | |
| 28 | return MMU_PAGE_1G; | |
| ccf17c8b AK |
29 | else if (shift == mmu_psize_defs[MMU_PAGE_16M].shift) |
| 30 | return MMU_PAGE_16M; | |
| 31 | else if (shift == mmu_psize_defs[MMU_PAGE_16G].shift) | |
| 32 | return MMU_PAGE_16G; | |
| fbfa26d8 AK |
33 | else { |
| 34 | WARN(1, "Wrong huge page shift\n"); | |
| 35 | return mmu_virtual_psize; | |
| 36 | } | |
| 37 | } | |
| 049d567a | 38 | |
| 40692eb5 AK |
39 | #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE |
| 40 | static inline bool gigantic_page_supported(void) | |
| 41 | { | |
| 4ae279c2 | 42 | return true; |
| 40692eb5 AK |
43 | } |
| 44 | #endif | |
| 45 | ||
| f1981b5b AK |
46 | /* hugepd entry valid bit */ |
| 47 | #define HUGEPD_VAL_BITS (0x8000000000000000UL) | |
| 48 | ||
| 8ef5cbde AK |
49 | #define huge_ptep_modify_prot_start huge_ptep_modify_prot_start |
| 50 | extern pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma, | |
| 51 | unsigned long addr, pte_t *ptep); | |
| 52 | ||
| 53 | #define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit | |
| 54 | extern void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, | |
| 55 | unsigned long addr, pte_t *ptep, | |
| 56 | pte_t old_pte, pte_t new_pte); | |
| 48483760 | 57 | #endif |