162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#ifndef _ASM_ARC_PGTABLE_H 762306a36Sopenharmony_ci#define _ASM_ARC_PGTABLE_H 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#include <linux/bits.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <asm/pgtable-levels.h> 1262306a36Sopenharmony_ci#include <asm/pgtable-bits-arcv2.h> 1362306a36Sopenharmony_ci#include <asm/page.h> 1462306a36Sopenharmony_ci#include <asm/mmu.h> 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci/* 1762306a36Sopenharmony_ci * Number of entries a user land program use. 1862306a36Sopenharmony_ci * TASK_SIZE is the maximum vaddr that can be used by a userland program. 1962306a36Sopenharmony_ci */ 2062306a36Sopenharmony_ci#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE) 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ciextern char empty_zero_page[PAGE_SIZE]; 2562306a36Sopenharmony_ci#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciextern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE); 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci/* to cope with aliasing VIPT cache */ 3062306a36Sopenharmony_ci#define HAVE_ARCH_UNMAPPED_AREA 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci#endif /* __ASSEMBLY__ */ 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci#endif 35