111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef _ASM_PGALLOC_H
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#define _ASM_PGALLOC_H
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#include <linux/mm.h>
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#include <linux/sched.h>
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#define __HAVE_ARCH_PMD_ALLOC_ONE
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#define __HAVE_ARCH_PUD_ALLOC_ONE
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#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
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#include <asm-generic/pgalloc.h>
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static inline void pmd_populate_kernel(struct mm_struct *mm,
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pmd_t *pmd, pte_t *pte)
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{
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set_pmd(pmd, __pmd((unsigned long)pte));
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}
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
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{
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set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
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}
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#ifndef __PAGETABLE_PMD_FOLDED
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static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
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{
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set_pud(pud, __pud((unsigned long)pmd));
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}
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#endif
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#ifndef __PAGETABLE_PUD_FOLDED
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static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
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{
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set_p4d(p4d, __p4d((unsigned long)pud));
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}
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#endif /* __PAGETABLE_PUD_FOLDED */
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extern void pagetable_init(void);
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extern pgd_t *pgd_alloc(struct mm_struct *mm);
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
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{
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pte_t *pte = __pte_alloc_one_kernel(mm);
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if (pte)
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kernel_pte_init(pte);
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return pte;
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}
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#define __pte_free_tlb(tlb, pte, address) \
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do { \
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pagetable_pte_dtor(page_ptdesc(pte)); \
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tlb_remove_page_ptdesc((tlb), page_ptdesc(pte)); \
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} while (0)
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#ifndef __PAGETABLE_PMD_FOLDED
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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pmd_t *pmd;
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struct ptdesc *ptdesc;
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ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, 0);
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if (!ptdesc)
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return NULL;
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if (!pagetable_pmd_ctor(ptdesc)) {
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pagetable_free(ptdesc);
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return NULL;
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}
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pmd = ptdesc_address(ptdesc);
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pmd_init(pmd);
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return pmd;
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}
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#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
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#endif
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#ifndef __PAGETABLE_PUD_FOLDED
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static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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pud_t *pud;
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struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM, 0);
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if (!ptdesc)
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return NULL;
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pagetable_pud_ctor(ptdesc);
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pud = ptdesc_address(ptdesc);
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pud_init(pud);
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return pud;
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}
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#define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x)
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#endif /* __PAGETABLE_PUD_FOLDED */
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extern pte_t * __init populate_kernel_pte(unsigned long addr);
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#endif /* _ASM_PGALLOC_H */
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