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/* 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 { \
pagetable_pte_dtor(page_ptdesc(pte)); \
tlb_remove_page_ptdesc((tlb), page_ptdesc(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));
}
/*
* 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 */