/* 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/tlb.h> #ifdef CONFIG_MMU#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));}#endif /* __PAGETABLE_PMD_FOLDED */ #define pmd_pgtable(pmd)	pmd_page(pmd) static inline pgd_t *pgd_alloc(struct mm_struct *mm){	pgd_t *pgd; 	pgd = (pgd_t *)__get_free_page(GFP_KERNEL);	if (likely(pgd != NULL)) {		memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));		/* Copy kernel mappings */		memcpy(pgd + USER_PTRS_PER_PGD,			init_mm.pgd + USER_PTRS_PER_PGD,			(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));	}	return pgd;} #ifndef __PAGETABLE_PMD_FOLDED #define __pmd_free_tlb(tlb, pmd, addr)  pmd_free((tlb)->mm, pmd) #endif /* __PAGETABLE_PMD_FOLDED */ #define __pte_free_tlb(tlb, pte, buf)   \do {                                    \	pgtable_pte_page_dtor(pte);     \	tlb_remove_page((tlb), pte);    \} while (0)#endif /* CONFIG_MMU */ #endif /* _ASM_RISCV_PGALLOC_H */