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