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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / 7a7489005a80af97ba289dc0579fccd50af4fe8d / . / arch / arc / include / asm / pgtable.h
blob: 4cf45a99fd792a5e1b528c96a610cfdd9120f14e [file] [log] [blame]
Thomas Gleixnerd2912cb2019-06-04 10:11:33 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]2/*
3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]4 */
5
6#ifndef _ASM_ARC_PGTABLE_H
7#define _ASM_ARC_PGTABLE_H
8
Masahiro Yamadafe6ba882019-07-16 16:27:01 -0700[diff] [blame]9#include <linux/bits.h>
Vineet Guptafe6cb7b2019-09-13 15:25:52 -0700[diff] [blame]10
11#include <asm/pgtable-levels.h>
12#include <asm/pgtable-bits-arcv2.h>
Vineet Gupta868a6532017-05-05 11:59:41 -0700[diff] [blame]13#include <asm/page.h>
Vineet Gupta288ff7d2019-09-09 17:36:34 -0700[diff] [blame]14#include <asm/mmu.h>
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]15
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]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
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]22#ifndef __ASSEMBLY__
23
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]24extern char empty_zero_page[PAGE_SIZE];
25#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
26
Vineet Guptafe6cb7b2019-09-13 15:25:52 -0700[diff] [blame]27extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE);
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]28
Vineet Gupta5bba49f2013-05-09 19:20:43 +0530[diff] [blame]29/* to cope with aliasing VIPT cache */
30#define HAVE_ARCH_UNMAPPED_AREA
31
Vineet Gupta5dda4dc2013-01-18 15:12:19 +0530[diff] [blame]32#endif /* __ASSEMBLY__ */
33
34#endif