projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 6c386655 JF |
1 | #ifndef _ASM_X86_PGTABLE_H |
| 2 | #define _ASM_X86_PGTABLE_H | |
| 3 | ||
| 4 | #define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1) | |
| 5 | #define FIRST_USER_ADDRESS 0 | |
| 6 | ||
| 7 | #define _PAGE_BIT_PRESENT 0 | |
| 8 | #define _PAGE_BIT_RW 1 | |
| 9 | #define _PAGE_BIT_USER 2 | |
| 10 | #define _PAGE_BIT_PWT 3 | |
| 11 | #define _PAGE_BIT_PCD 4 | |
| 12 | #define _PAGE_BIT_ACCESSED 5 | |
| 13 | #define _PAGE_BIT_DIRTY 6 | |
| 14 | #define _PAGE_BIT_FILE 6 | |
| 15 | #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ | |
| 16 | #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ | |
| 17 | #define _PAGE_BIT_UNUSED1 9 /* available for programmer */ | |
| 18 | #define _PAGE_BIT_UNUSED2 10 | |
| 19 | #define _PAGE_BIT_UNUSED3 11 | |
| 20 | #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ | |
| 21 | ||
| 61f38226 IM |
22 | #define _PAGE_PRESENT (_AC(1, L)<<_PAGE_BIT_PRESENT) |
| 23 | #define _PAGE_RW (_AC(1, L)<<_PAGE_BIT_RW) | |
| 24 | #define _PAGE_USER (_AC(1, L)<<_PAGE_BIT_USER) | |
| 25 | #define _PAGE_PWT (_AC(1, L)<<_PAGE_BIT_PWT) | |
| 26 | #define _PAGE_PCD (_AC(1, L)<<_PAGE_BIT_PCD) | |
| 27 | #define _PAGE_ACCESSED (_AC(1, L)<<_PAGE_BIT_ACCESSED) | |
| 28 | #define _PAGE_DIRTY (_AC(1, L)<<_PAGE_BIT_DIRTY) | |
| 29 | #define _PAGE_PSE (_AC(1, L)<<_PAGE_BIT_PSE) /* 2MB page */ | |
| 30 | #define _PAGE_GLOBAL (_AC(1, L)<<_PAGE_BIT_GLOBAL) /* Global TLB entry */ | |
| 31 | #define _PAGE_UNUSED1 (_AC(1, L)<<_PAGE_BIT_UNUSED1) | |
| 32 | #define _PAGE_UNUSED2 (_AC(1, L)<<_PAGE_BIT_UNUSED2) | |
| 33 | #define _PAGE_UNUSED3 (_AC(1, L)<<_PAGE_BIT_UNUSED3) | |
| 6c386655 JF |
34 | |
| 35 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) | |
| 36 | #define _PAGE_NX (_AC(1, ULL) << _PAGE_BIT_NX) | |
| 37 | #else | |
| 38 | #define _PAGE_NX 0 | |
| 39 | #endif | |
| 40 | ||
| 41 | /* If _PAGE_PRESENT is clear, we use these: */ | |
| 42 | #define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping, saved PTE; unset:swap */ | |
| 43 | #define _PAGE_PROTNONE _PAGE_PSE /* if the user mapped it with PROT_NONE; | |
| 44 | pte_present gives true */ | |
| 45 | ||
| 46 | #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY) | |
| 47 | #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY) | |
| 48 | ||
| 49 | #define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) | |
| 50 | ||
| 51 | #define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) | |
| 52 | #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) | |
| 53 | ||
| 54 | #define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED) | |
| 55 | #define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) | |
| 56 | #define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) | |
| 57 | #define PAGE_COPY PAGE_COPY_NOEXEC | |
| 58 | #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) | |
| 59 | #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) | |
| 60 | ||
| 61 | #ifdef CONFIG_X86_32 | |
| 62 | #define _PAGE_KERNEL_EXEC \ | |
| 63 | (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) | |
| 64 | #define _PAGE_KERNEL (_PAGE_KERNEL_EXEC | _PAGE_NX) | |
| 65 | ||
| 66 | #ifndef __ASSEMBLY__ | |
| 67 | extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC; | |
| 68 | #endif /* __ASSEMBLY__ */ | |
| 69 | #else | |
| 70 | #define __PAGE_KERNEL_EXEC \ | |
| 71 | (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) | |
| 72 | #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) | |
| 73 | #endif | |
| 74 | ||
| 75 | #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) | |
| 76 | #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) | |
| 77 | #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) | |
| 78 | #define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) | |
| 79 | #define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT) | |
| 80 | #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) | |
| 81 | #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) | |
| 82 | ||
| 83 | #ifdef CONFIG_X86_32 | |
| 84 | # define MAKE_GLOBAL(x) __pgprot((x)) | |
| 85 | #else | |
| 86 | # define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL) | |
| 87 | #endif | |
| 88 | ||
| 89 | #define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL) | |
| 90 | #define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO) | |
| 91 | #define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC) | |
| 92 | #define PAGE_KERNEL_RX MAKE_GLOBAL(__PAGE_KERNEL_RX) | |
| 93 | #define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE) | |
| 94 | #define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE) | |
| 95 | #define PAGE_KERNEL_LARGE_EXEC MAKE_GLOBAL(__PAGE_KERNEL_LARGE_EXEC) | |
| 96 | #define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL) | |
| 97 | #define PAGE_KERNEL_VSYSCALL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE) | |
| 98 | ||
| 99 | /* xwr */ | |
| 100 | #define __P000 PAGE_NONE | |
| 101 | #define __P001 PAGE_READONLY | |
| 102 | #define __P010 PAGE_COPY | |
| 103 | #define __P011 PAGE_COPY | |
| 104 | #define __P100 PAGE_READONLY_EXEC | |
| 105 | #define __P101 PAGE_READONLY_EXEC | |
| 106 | #define __P110 PAGE_COPY_EXEC | |
| 107 | #define __P111 PAGE_COPY_EXEC | |
| 108 | ||
| 109 | #define __S000 PAGE_NONE | |
| 110 | #define __S001 PAGE_READONLY | |
| 111 | #define __S010 PAGE_SHARED | |
| 112 | #define __S011 PAGE_SHARED | |
| 113 | #define __S100 PAGE_READONLY_EXEC | |
| 114 | #define __S101 PAGE_READONLY_EXEC | |
| 115 | #define __S110 PAGE_SHARED_EXEC | |
| 116 | #define __S111 PAGE_SHARED_EXEC | |
| 117 | ||
| 96a388de TG |
118 | #ifdef CONFIG_X86_32 |
| 119 | # include "pgtable_32.h" | |
| 120 | #else | |
| 121 | # include "pgtable_64.h" | |
| 122 | #endif | |
| 6c386655 JF |
123 | |
| 124 | #endif /* _ASM_X86_PGTABLE_H */ |