projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | /* sun3_pgalloc.h -- |
| 3 | * reorganization around 2.3.39, routines moved from sun3_pgtable.h | |
| 4 | * | |
| 5 | * | |
| 6 | * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam) | |
| 7 | * | |
| 8 | * moved 1/26/2000 Sam Creasey | |
| 9 | */ | |
| 10 | ||
| 11 | #ifndef _SUN3_PGALLOC_H | |
| 12 | #define _SUN3_PGALLOC_H | |
| 13 | ||
| 14 | #include <asm/tlb.h> | |
| 15 | ||
| f9cb654c | 16 | #include <asm-generic/pgalloc.h> |
| 14c0a39c | 17 | |
| 1da177e4 LT |
18 | extern const char bad_pmd_string[]; |
| 19 | ||
| 9e1b32ca | 20 | #define __pte_free_tlb(tlb,pte,addr) \ |
| 2f569afd | 21 | do { \ |
| b4ed71f5 | 22 | pgtable_pte_page_dtor(pte); \ |
| 2f569afd MS |
23 | tlb_remove_page((tlb), pte); \ |
| 24 | } while (0) | |
| 1da177e4 | 25 | |
| 1da177e4 LT |
26 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) |
| 27 | { | |
| 28 | pmd_val(*pmd) = __pa((unsigned long)pte); | |
| 29 | } | |
| 30 | ||
| 2f569afd | 31 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) |
| 1da177e4 LT |
32 | { |
| 33 | pmd_val(*pmd) = __pa((unsigned long)page_address(page)); | |
| 34 | } | |
| 2f569afd | 35 | #define pmd_pgtable(pmd) pmd_page(pmd) |
| 1da177e4 LT |
36 | |
| 37 | /* | |
| 38 | * allocating and freeing a pmd is trivial: the 1-entry pmd is | |
| 39 | * inside the pgd, so has no extra memory associated with it. | |
| 40 | */ | |
| 5e541973 | 41 | #define pmd_free(mm, x) do { } while (0) |
| 1da177e4 | 42 | |
| 1da177e4 LT |
43 | static inline pgd_t * pgd_alloc(struct mm_struct *mm) |
| 44 | { | |
| 45 | pgd_t *new_pgd; | |
| 46 | ||
| 47 | new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL); | |
| 48 | memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); | |
| 49 | memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); | |
| 50 | return new_pgd; | |
| 51 | } | |
| 52 | ||
| 1da177e4 | 53 | #endif /* SUN3_PGALLOC_H */ |