| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| */ |
| |
| #ifndef _ASM_ARC_PGTABLE_H |
| #define _ASM_ARC_PGTABLE_H |
| |
| #include <linux/bits.h> |
| |
| #include <asm/pgtable-levels.h> |
| #include <asm/pgtable-bits-arcv2.h> |
| #include <asm/page.h> |
| #include <asm/mmu.h> |
| |
| /* |
| * Number of entries a user land program use. |
| * TASK_SIZE is the maximum vaddr that can be used by a userland program. |
| */ |
| #define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE) |
| |
| #ifndef __ASSEMBLY__ |
| |
| extern char empty_zero_page[PAGE_SIZE]; |
| #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) |
| |
| extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE); |
| |
| /* Macro to mark a page protection as uncacheable */ |
| #define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) & ~_PAGE_CACHEABLE)) |
| |
| extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE); |
| |
| /* to cope with aliasing VIPT cache */ |
| #define HAVE_ARCH_UNMAPPED_AREA |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif |
