/* SPDX-License-Identifier: GPL-2.0-or-later *//* * OpenRISC Linux * * Linux architectural port borrowing liberally from similar works of * others.  All original copyrights apply as per the original source * declaration. * * OpenRISC implementation: * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> * et al. */ #ifndef __ASM_OPENRISC_PGALLOC_H#define __ASM_OPENRISC_PGALLOC_H #include <asm/page.h>#include <linux/threads.h>#include <linux/mm.h>#include <linux/memblock.h> #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL#include <asm-generic/pgalloc.h> extern int mem_init_done; #define pmd_populate_kernel(mm, pmd, pte) \	set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte))) static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,				struct page *pte){	set_pmd(pmd, __pmd(_KERNPG_TABLE +		     ((unsigned long)page_to_pfn(pte) <<		     (unsigned long) PAGE_SHIFT)));} /* * Allocate and free page tables. */static inline pgd_t *pgd_alloc(struct mm_struct *mm){	pgd_t *ret = __pgd_alloc(mm, 0); 	if (ret)		memcpy(ret + USER_PTRS_PER_PGD,		       swapper_pg_dir + USER_PTRS_PER_PGD,		       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); 	return ret;} #if 0/* FIXME: This seems to be the preferred style, but we are using * current_pgd (from mm->pgd) to load kernel pages so we need it * initialized.  This needs to be looked into. */extern inline pgd_t *pgd_alloc(struct mm_struct *mm){	return (pgd_t *)get_zeroed_page(GFP_KERNEL);}#endif extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm); #define __pte_free_tlb(tlb, pte, addr)	\	tlb_remove_ptdesc((tlb), page_ptdesc(pte)) #endif