| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* sun3_pgalloc.h -- | |
| * reorganization around 2.3.39, routines moved from sun3_pgtable.h | |
| * | |
| * | |
| * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam) | |
| * | |
| * moved 1/26/2000 Sam Creasey | |
| */ | |
| #ifndef _SUN3_PGALLOC_H | |
| #define _SUN3_PGALLOC_H | |
| #include <asm/tlb.h> | |
| #include <asm-generic/pgalloc.h> | |
| extern const char bad_pmd_string[]; | |
| #define __pte_free_tlb(tlb,pte,addr) \ | |
| do { \ | |
| pgtable_pte_page_dtor(pte); \ | |
| tlb_remove_page((tlb), pte); \ | |
| } while (0) | |
| static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) | |
| { | |
| pmd_val(*pmd) = __pa((unsigned long)pte); | |
| } | |
| static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) | |
| { | |
| pmd_val(*pmd) = __pa((unsigned long)page_address(page)); | |
| } | |
| #define pmd_pgtable(pmd) pmd_page(pmd) | |
| /* | |
| * allocating and freeing a pmd is trivial: the 1-entry pmd is | |
| * inside the pgd, so has no extra memory associated with it. | |
| */ | |
| #define pmd_free(mm, x) do { } while (0) | |
| static inline pgd_t * pgd_alloc(struct mm_struct *mm) | |
| { | |
| pgd_t *new_pgd; | |
| new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL); | |
| memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); | |
| memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); | |
| return new_pgd; | |
| } | |
| #endif /* SUN3_PGALLOC_H */ |