/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_IA64_PGALLOC_H
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#define _ASM_IA64_PGALLOC_H
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/*
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* This file contains the functions and defines necessary to allocate
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* page tables.
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*
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* This hopefully works with any (fixed) ia-64 page-size, as defined
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* in <asm/page.h> (currently 8192).
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*
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* Copyright (C) 1998-2001 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
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*/
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#include <linux/compiler.h>
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#include <linux/mm.h>
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#include <linux/page-flags.h>
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#include <linux/threads.h>
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#include <asm-generic/pgalloc.h>
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#include <asm/mmu_context.h>
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
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}
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#if CONFIG_PGTABLE_LEVELS == 4
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static inline void
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p4d_populate(struct mm_struct *mm, p4d_t * p4d_entry, pud_t * pud)
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{
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p4d_val(*p4d_entry) = __pa(pud);
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}
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#define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud)
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#endif /* CONFIG_PGTABLE_LEVELS == 4 */
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static inline void
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pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
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{
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pud_val(*pud_entry) = __pa(pmd);
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}
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#define __pmd_free_tlb(tlb, pmd, address) pmd_free((tlb)->mm, pmd)
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static inline void
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pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
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{
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pmd_val(*pmd_entry) = page_to_phys(pte);
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}
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#define pmd_pgtable(pmd) pmd_page(pmd)
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static inline void
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pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
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{
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pmd_val(*pmd_entry) = __pa(pte);
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}
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#define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
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#endif /* _ASM_IA64_PGALLOC_H */
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