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