2 * Based on arch/arm/include/asm/page.h
4 * Copyright (C) 1995-2003 Russell King
5 * Copyright (C) 2012 ARM Ltd.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 /* PAGE_SHIFT determines the page size */
23 #ifdef CONFIG_ARM64_64K_PAGES
28 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
29 #define PAGE_MASK (~(PAGE_SIZE-1))
31 /* We do define AT_SYSINFO_EHDR but don't use the gate mechanism */
32 #define __HAVE_ARCH_GATE_AREA 1
36 #ifdef CONFIG_ARM64_64K_PAGES
37 #include <asm/pgtable-2level-types.h>
39 #include <asm/pgtable-3level-types.h>
42 extern void __cpu_clear_user_page(void *p, unsigned long user);
43 extern void __cpu_copy_user_page(void *to, const void *from,
45 extern void copy_page(void *to, const void *from);
46 extern void clear_page(void *to);
48 #define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr)
49 #define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
51 typedef struct page *pgtable_t;
53 #ifdef CONFIG_HAVE_ARCH_PFN_VALID
54 extern int pfn_valid(unsigned long);
57 #include <asm/memory.h>
59 #endif /* !__ASSEMBLY__ */
61 #define VM_DATA_DEFAULT_FLAGS \
62 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
63 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
65 #include <asm-generic/getorder.h>