1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 4 */
 5
 6#ifndef _ASM_ARC_PGTABLE_H
 7#define _ASM_ARC_PGTABLE_H
 8
 9#include <linux/bits.h>
10
11#include <asm/pgtable-levels.h>
12#include <asm/pgtable-bits-arcv2.h>
13#include <asm/page.h>
14#include <asm/mmu.h>
15
16/*
17 * Number of entries a user land program use.
18 * TASK_SIZE is the maximum vaddr that can be used by a userland program.
19 */
20#define	USER_PTRS_PER_PGD	(TASK_SIZE / PGDIR_SIZE)
21
22#ifndef __ASSEMBLY__
23
24extern char empty_zero_page[PAGE_SIZE];
25#define ZERO_PAGE(vaddr)	(virt_to_page(empty_zero_page))
26
27extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE);
28
29/* to cope with aliasing VIPT cache */
30#define HAVE_ARCH_UNMAPPED_AREA
31
32#endif /* __ASSEMBLY__ */
33
34#endif

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 4 */
 5
 6#ifndef _ASM_ARC_PGTABLE_H
 7#define _ASM_ARC_PGTABLE_H
 8
 9#include <linux/bits.h>
10
11#include <asm/pgtable-levels.h>
12#include <asm/pgtable-bits-arcv2.h>
13#include <asm/page.h>
14#include <asm/mmu.h>
15
16/*
17 * Number of entries a user land program use.
18 * TASK_SIZE is the maximum vaddr that can be used by a userland program.
19 */
20#define	USER_PTRS_PER_PGD	(TASK_SIZE / PGDIR_SIZE)
21
22#ifndef __ASSEMBLY__
23
24extern char empty_zero_page[PAGE_SIZE];
25#define ZERO_PAGE(vaddr)	(virt_to_page(empty_zero_page))
26
27extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE);
28
29/* to cope with aliasing VIPT cache */
30#define HAVE_ARCH_UNMAPPED_AREA
31
32#endif /* __ASSEMBLY__ */
33
34#endif