| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | |
| 18 | extern void __cpu_clear_user_page(void *p, unsigned long user); |
| 19 | extern void __cpu_copy_user_page(void *to, const void *from, |
| 20 | unsigned long user); |
| 21 | extern void copy_page(void *to, const void *from); |
| 22 | extern void clear_page(void *to); |
| 23 | |
| 24 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
| 25 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) |
| 26 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
| 27 | |
| 28 | #define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr) |
| 29 | #define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr) |
| 30 | |
| 31 | typedef struct page *pgtable_t; |
| 32 | |
| 33 | extern int pfn_valid(unsigned long); |
| 34 | |
| 35 | #include <asm/memory.h> |
| 36 | |
| 37 | #endif /* !__ASSEMBLY__ */ |
| 38 | |
| 39 | #define VM_DATA_DEFAULT_FLAGS \ |
| 40 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ |
| 41 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
| 42 | |
| 43 | #include <asm-generic/getorder.h> |
| 44 | |
| 45 | #endif |