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authorJeremy Fitzhardinge <jeremy@goop.org>2008-01-30 07:32:55 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:32:55 -0500
commit6c3866558213ff706d8331053386915371ad63ec (patch)
tree7c7d4b56c0544abbc2256f078d71a78d3ebfb84d /include/asm-x86/pgtable.h
parent82bc03fc158e28c90d7ed9919410776039cb4e14 (diff)
x86: move all asm/pgtable constants into one place
32 and 64-bit use the same flags for pagetable entries, so make them all common. [ mingo@elte.hu: fixes ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/pgtable.h')
-rw-r--r--include/asm-x86/pgtable.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index 1039140652af..5b858f0285a8 100644
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -1,5 +1,124 @@
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
22#define _PAGE_PRESENT (_AC(1, UL)<<_PAGE_BIT_PRESENT)
23#define _PAGE_RW (_AC(1, UL)<<_PAGE_BIT_RW)
24#define _PAGE_USER (_AC(1, UL)<<_PAGE_BIT_USER)
25#define _PAGE_PWT (_AC(1, UL)<<_PAGE_BIT_PWT)
26#define _PAGE_PCD (_AC(1, UL)<<_PAGE_BIT_PCD)
27#define _PAGE_ACCESSED (_AC(1, UL)<<_PAGE_BIT_ACCESSED)
28#define _PAGE_DIRTY (_AC(1, UL)<<_PAGE_BIT_DIRTY)
29#define _PAGE_PSE (_AC(1, UL)<<_PAGE_BIT_PSE) /* 2MB page */
30#define _PAGE_GLOBAL (_AC(1, UL)<<_PAGE_BIT_GLOBAL) /* Global TLB entry */
31#define _PAGE_UNUSED1 (_AC(1, UL)<<_PAGE_BIT_UNUSED1)
32#define _PAGE_UNUSED2 (_AC(1, UL)<<_PAGE_BIT_UNUSED2)
33#define _PAGE_UNUSED3 (_AC(1, UL)<<_PAGE_BIT_UNUSED3)
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__
67extern 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
1#ifdef CONFIG_X86_32 118#ifdef CONFIG_X86_32
2# include "pgtable_32.h" 119# include "pgtable_32.h"
3#else 120#else
4# include "pgtable_64.h" 121# include "pgtable_64.h"
5#endif 122#endif
123
124#endif /* _ASM_X86_PGTABLE_H */