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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com> * Copyright (C) 2012 Regents of the University of California */
#ifndef _ASM_RISCV_PGALLOC_H#define _ASM_RISCV_PGALLOC_H
#include <linux/mm.h>#include <asm/sbi.h>#include <asm/tlb.h>
#ifdef CONFIG_MMU#define __HAVE_ARCH_PUD_FREE#include <asm-generic/pgalloc.h>
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte){ unsigned long pfn = virt_to_pfn(pte);
set_pmd(pmd, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE));}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte){ unsigned long pfn = virt_to_pfn(page_address(pte));
set_pmd(pmd, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE));}
#ifndef __PAGETABLE_PMD_FOLDEDstatic inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd){ unsigned long pfn = virt_to_pfn(pmd);
set_pud(pud, __pud((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE));}
static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud){ if (pgtable_l4_enabled) { unsigned long pfn = virt_to_pfn(pud);
set_p4d(p4d, __p4d((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); }}
static inline void p4d_populate_safe(struct mm_struct *mm, p4d_t *p4d, pud_t *pud){ if (pgtable_l4_enabled) { unsigned long pfn = virt_to_pfn(pud);
set_p4d_safe(p4d, __p4d((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); }}
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, p4d_t *p4d){ if (pgtable_l5_enabled) { unsigned long pfn = virt_to_pfn(p4d);
set_pgd(pgd, __pgd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); }}
static inline void pgd_populate_safe(struct mm_struct *mm, pgd_t *pgd, p4d_t *p4d){ if (pgtable_l5_enabled) { unsigned long pfn = virt_to_pfn(p4d);
set_pgd_safe(pgd, __pgd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); }}
#define pud_free pud_freestatic inline void pud_free(struct mm_struct *mm, pud_t *pud){ if (pgtable_l4_enabled) __pud_free(mm, pud);}
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, unsigned long addr){ if (pgtable_l4_enabled) tlb_remove_ptdesc(tlb, virt_to_ptdesc(pud));}
static inline void __p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d, unsigned long addr){ if (pgtable_l5_enabled) tlb_remove_ptdesc(tlb, virt_to_ptdesc(p4d));}#endif /* __PAGETABLE_PMD_FOLDED */
static inline void sync_kernel_mappings(pgd_t *pgd){ memcpy(pgd + USER_PTRS_PER_PGD, init_mm.pgd + USER_PTRS_PER_PGD, (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));}
static inline pgd_t *pgd_alloc(struct mm_struct *mm){ pgd_t *pgd;
pgd = __pgd_alloc(mm, 0); if (likely(pgd != NULL)) { /* Copy kernel mappings */ sync_kernel_mappings(pgd); } return pgd;}
#ifndef __PAGETABLE_PMD_FOLDED
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, unsigned long addr){ tlb_remove_ptdesc(tlb, virt_to_ptdesc(pmd));}
#endif /* __PAGETABLE_PMD_FOLDED */
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr){ tlb_remove_ptdesc(tlb, page_ptdesc(pte));}#endif /* CONFIG_MMU */
#endif /* _ASM_RISCV_PGALLOC_H */