tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Based on arch/arm/include/asm/page.h
4 *
5 * Copyright (C) 1995-2003 Russell King
6 * Copyright (C) 2012 ARM Ltd.
7 */
8#ifndef __ASM_PAGE_H
9#define __ASM_PAGE_H
10
11#include <asm/page-def.h>
12
13#ifndef __ASSEMBLY__
14
15#include <linux/personality.h> /* for READ_IMPLIES_EXEC */
16#include <asm/pgtable-types.h>
17
18extern void __cpu_clear_user_page(void *p, unsigned long user);
19extern void __cpu_copy_user_page(void *to, const void *from,
20 unsigned long user);
21extern void copy_page(void *to, const void *from);
22extern void clear_page(void *to);
23
24#define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr)
25#define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
26
27typedef struct page *pgtable_t;
28
29extern int pfn_valid(unsigned long);
30
31#include <asm/memory.h>
32
33#endif /* !__ASSEMBLY__ */
34
35#define VM_DATA_DEFAULT_FLAGS \
36 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
37 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
38
39#include <asm-generic/getorder.h>
40
41#endif