arch/um/include/asm/pgalloc.h

   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
  23 /*
  24  * Allocate and free page tables.
  25  */
  26 extern pgd_t *pgd_alloc(struct mm_struct *);
  27
  28 #define __pte_free_tlb(tlb, pte, address)                       \
  29 do {                                                            \
  30         pagetable_pte_dtor(page_ptdesc(pte));                   \
  31         tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte)));      \
  32 } while (0)
  33
  34 #ifdef CONFIG_3_LEVEL_PGTABLES
  35
  36 #define __pmd_free_tlb(tlb, pmd, address)                       \
  37 do {                                                            \
  38         pagetable_pmd_dtor(virt_to_ptdesc(pmd));                        \
  39         tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(pmd));     \
  40 } while (0)
  41
  42 #endif
  43
  44 #endif
  45