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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071/* 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