48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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* Copyright 2003 PathScale, Inc.
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* Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
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*/
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#ifndef __UM_PGALLOC_H
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#define __UM_PGALLOC_H
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#include <linux/mm.h>
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#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
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#define pmd_populate_kernel(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
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#define pmd_populate(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + \
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((unsigned long long)page_to_pfn(pte) << \
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(unsigned long long) PAGE_SHIFT)))
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#define pmd_pgtable(pmd) pmd_page(pmd)
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/*
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* Allocate and free page tables.
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*/
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extern pgd_t *pgd_alloc(struct mm_struct *);
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extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
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#define __pte_free_tlb(tlb,pte, address) \
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do { \
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pgtable_pte_page_dtor(pte); \
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tlb_remove_page((tlb),(pte)); \
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} while (0)
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#ifdef CONFIG_3_LEVEL_PGTABLES
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static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
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{
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free_page((unsigned long)pmd);
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}
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#define __pmd_free_tlb(tlb,x, address) tlb_remove_page((tlb),virt_to_page(x))
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#endif
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#endif
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