projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 047ea784 PM |
2 | #ifndef _ASM_POWERPC_PGTABLE_H |
| 3 | #define _ASM_POWERPC_PGTABLE_H | |
| 4 | ||
| 9c709f3b | 5 | #ifndef __ASSEMBLY__ |
| c34a51ce | 6 | #include <linux/mmdebug.h> |
| 1c98025c | 7 | #include <linux/mmzone.h> |
| 9c709f3b DG |
8 | #include <asm/processor.h> /* For TASK_SIZE */ |
| 9 | #include <asm/mmu.h> | |
| 10 | #include <asm/page.h> | |
| 8d30c14c | 11 | |
| 9c709f3b | 12 | struct mm_struct; |
| 8d30c14c | 13 | |
| 9c709f3b DG |
14 | #endif /* !__ASSEMBLY__ */ |
| 15 | ||
| 3dfcb315 AK |
16 | #ifdef CONFIG_PPC_BOOK3S |
| 17 | #include <asm/book3s/pgtable.h> | |
| 18 | #else | |
| 17ed9e31 | 19 | #include <asm/nohash/pgtable.h> |
| 3dfcb315 | 20 | #endif /* !CONFIG_PPC_BOOK3S */ |
| 1da177e4 | 21 | |
| 1da177e4 | 22 | #ifndef __ASSEMBLY__ |
| 64b3d0e8 | 23 | |
| 78f1dbde AK |
24 | #include <asm/tlbflush.h> |
| 25 | ||
| 71087002 BH |
26 | /* Keep these as a macros to avoid include dependency mess */ |
| 27 | #define pte_page(x) pfn_to_page(pte_pfn(x)) | |
| 28 | #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) | |
| 29 | ||
| 9c709f3b DG |
30 | /* |
| 31 | * ZERO_PAGE is a global shared page that is always zero: used | |
| 32 | * for zero-mapped memory areas etc.. | |
| 33 | */ | |
| 34 | extern unsigned long empty_zero_page[]; | |
| 35 | #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) | |
| 36 | ||
| 37 | extern pgd_t swapper_pg_dir[]; | |
| 38 | ||
| 1c98025c SW |
39 | void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn); |
| 40 | int dma_pfn_limit_to_zone(u64 pfn_limit); | |
| 9c709f3b DG |
41 | extern void paging_init(void); |
| 42 | ||
| 43 | /* | |
| 44 | * kern_addr_valid is intended to indicate whether an address is a valid | |
| 45 | * kernel address. Most 32-bit archs define it as always true (like this) | |
| 46 | * but most 64-bit archs actually perform a test. What should we do here? | |
| 47 | */ | |
| 48 | #define kern_addr_valid(addr) (1) | |
| 49 | ||
| 1da177e4 | 50 | #include <asm-generic/pgtable.h> |
| 1e3519f8 BH |
51 | |
| 52 | ||
| 53 | /* | |
| 54 | * This gets called at the end of handling a page fault, when | |
| 55 | * the kernel has put a new PTE into the page table for the process. | |
| 56 | * We use it to ensure coherency between the i-cache and d-cache | |
| 57 | * for the page which has just been mapped in. | |
| 58 | * On machines which use an MMU hash table, we use this to put a | |
| 59 | * corresponding HPTE into the hash table ahead of time, instead of | |
| 60 | * waiting for the inevitable extra hash-table miss exception. | |
| 61 | */ | |
| 4b3073e1 | 62 | extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *); |
| 1e3519f8 | 63 | |
| e2b3d202 | 64 | extern int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, |
| b30e7590 AK |
65 | unsigned long end, int write, |
| 66 | struct page **pages, int *nr); | |
| 074c2eae AK |
67 | #ifndef CONFIG_TRANSPARENT_HUGEPAGE |
| 68 | #define pmd_large(pmd) 0 | |
| 074c2eae | 69 | #endif |
| e9ab1a1c | 70 | |
| 94171b19 | 71 | /* can we use this in kvm */ |
| e9ab1a1c AK |
72 | unsigned long vmalloc_to_phys(void *vmalloc_addr); |
| 73 | ||
| 9b081e10 CL |
74 | void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); |
| 75 | void pgtable_cache_init(void); | |
| 029d9252 | 76 | |
| 3184cc4b | 77 | #if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_PPC32) |
| 029d9252 ME |
78 | void mark_initmem_nx(void); |
| 79 | #else | |
| 80 | static inline void mark_initmem_nx(void) { } | |
| 81 | #endif | |
| 82 | ||
| 1da177e4 LT |
83 | #endif /* __ASSEMBLY__ */ |
| 84 | ||
| 047ea784 | 85 | #endif /* _ASM_POWERPC_PGTABLE_H */ |