1 /* SPDX-License-Identifier: GPL-2.0 */
3 * reorganization around 2.3.39, routines moved from sun3_pgtable.h
6 * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
8 * moved 1/26/2000 Sam Creasey
11 #ifndef _SUN3_PGALLOC_H
12 #define _SUN3_PGALLOC_H
16 #include <asm-generic/pgalloc.h>
18 extern const char bad_pmd_string
[];
20 #define __pte_free_tlb(tlb,pte,addr) \
22 pgtable_pte_page_dtor(pte); \
23 tlb_remove_page((tlb), pte); \
26 static inline void pmd_populate_kernel(struct mm_struct
*mm
, pmd_t
*pmd
, pte_t
*pte
)
28 pmd_val(*pmd
) = __pa((unsigned long)pte
);
31 static inline void pmd_populate(struct mm_struct
*mm
, pmd_t
*pmd
, pgtable_t page
)
33 pmd_val(*pmd
) = __pa((unsigned long)page_address(page
));
35 #define pmd_pgtable(pmd) pmd_page(pmd)
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.
41 #define pmd_free(mm, x) do { } while (0)
43 static inline pgd_t
* pgd_alloc(struct mm_struct
*mm
)
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
));
53 #endif /* SUN3_PGALLOC_H */