linux/arch/um/include/asm/pgalloc.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* 
   3 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
   4 * Copyright 2003 PathScale, Inc.
   5 * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
   6 */
   7
   8#ifndef __UM_PGALLOC_H
   9#define __UM_PGALLOC_H
  10
  11#include <linux/mm.h>
  12
  13#include <asm-generic/pgalloc.h>
  14
  15#define pmd_populate_kernel(mm, pmd, pte) \
  16        set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
  17
  18#define pmd_populate(mm, pmd, pte)                              \
  19        set_pmd(pmd, __pmd(_PAGE_TABLE +                        \
  20                ((unsigned long long)page_to_pfn(pte) <<        \
  21                        (unsigned long long) PAGE_SHIFT)))
  22#define pmd_pgtable(pmd) pmd_page(pmd)
  23
  24/*
  25 * Allocate and free page tables.
  26 */
  27extern pgd_t *pgd_alloc(struct mm_struct *);
  28
  29#define __pte_free_tlb(tlb,pte, address)                \
  30do {                                                    \
  31        pgtable_pte_page_dtor(pte);                     \
  32        tlb_remove_page((tlb),(pte));                   \
  33} while (0)
  34
  35#ifdef CONFIG_3_LEVEL_PGTABLES
  36
  37#define __pmd_free_tlb(tlb, pmd, address)               \
  38do {                                                    \
  39        pgtable_pmd_page_dtor(virt_to_page(pmd));       \
  40        tlb_remove_page((tlb),virt_to_page(pmd));       \
  41} while (0)                                             \
  42
  43#endif
  44
  45#endif
  46
  47