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authorJeremy Fitzhardinge <jeremy@goop.org>2009-02-08 21:46:18 -0500
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-02-11 17:54:09 -0500
commit8d19c99faf6165ef095138dd595d46b9bbb34055 (patch)
tree91e1ff606c3649f1e65a998abb87999d7fadfcdd /arch
parentb924a28138572f03bc8647c2be8f876d27e2666a (diff)
Split pgtable.h into pgtable_types.h and pgtable.h
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/pgtable.h212
-rw-r--r--arch/x86/include/asm/pgtable_types.h220
2 files changed, 221 insertions, 211 deletions
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 860f1b635c40..10404e7bf32d 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -3,164 +3,7 @@
3 3
4#include <asm/page.h> 4#include <asm/page.h>
5 5
6#define FIRST_USER_ADDRESS 0 6#include <asm/pgtable_types.h>
7
8#define _PAGE_BIT_PRESENT 0 /* is present */
9#define _PAGE_BIT_RW 1 /* writeable */
10#define _PAGE_BIT_USER 2 /* userspace addressable */
11#define _PAGE_BIT_PWT 3 /* page write through */
12#define _PAGE_BIT_PCD 4 /* page cache disabled */
13#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
14#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
15#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
16#define _PAGE_BIT_PAT 7 /* on 4KB pages */
17#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
18#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
19#define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
20#define _PAGE_BIT_UNUSED3 11
21#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
22#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
23#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
24#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
25
26/* If _PAGE_BIT_PRESENT is clear, we use these: */
27/* - if the user mapped it with PROT_NONE; pte_present gives true */
28#define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
29/* - set: nonlinear file mapping, saved PTE; unset:swap */
30#define _PAGE_BIT_FILE _PAGE_BIT_DIRTY
31
32#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
33#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
34#define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
35#define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
36#define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
37#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
38#define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
39#define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
40#define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
41#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
42#define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
43#define _PAGE_UNUSED3 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3)
44#define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
45#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
46#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
47#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
48#define __HAVE_ARCH_PTE_SPECIAL
49
50#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
51#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
52#else
53#define _PAGE_NX (_AT(pteval_t, 0))
54#endif
55
56#define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
57#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
58
59#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
60 _PAGE_ACCESSED | _PAGE_DIRTY)
61#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \
62 _PAGE_DIRTY)
63
64/* Set of bits not changed in pte_modify */
65#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
66 _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
67
68#define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT)
69#define _PAGE_CACHE_WB (0)
70#define _PAGE_CACHE_WC (_PAGE_PWT)
71#define _PAGE_CACHE_UC_MINUS (_PAGE_PCD)
72#define _PAGE_CACHE_UC (_PAGE_PCD | _PAGE_PWT)
73
74#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
75#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
76 _PAGE_ACCESSED | _PAGE_NX)
77
78#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \
79 _PAGE_USER | _PAGE_ACCESSED)
80#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
81 _PAGE_ACCESSED | _PAGE_NX)
82#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
83 _PAGE_ACCESSED)
84#define PAGE_COPY PAGE_COPY_NOEXEC
85#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \
86 _PAGE_ACCESSED | _PAGE_NX)
87#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
88 _PAGE_ACCESSED)
89
90#define __PAGE_KERNEL_EXEC \
91 (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
92#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
93
94#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
95#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
96#define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
97#define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC)
98#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
99#define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD)
100#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
101#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
102#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
103#define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
104#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
105
106#define __PAGE_KERNEL_IO (__PAGE_KERNEL | _PAGE_IOMAP)
107#define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
108#define __PAGE_KERNEL_IO_UC_MINUS (__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
109#define __PAGE_KERNEL_IO_WC (__PAGE_KERNEL_WC | _PAGE_IOMAP)
110
111#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
112#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
113#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
114#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
115#define PAGE_KERNEL_WC __pgprot(__PAGE_KERNEL_WC)
116#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
117#define PAGE_KERNEL_UC_MINUS __pgprot(__PAGE_KERNEL_UC_MINUS)
118#define PAGE_KERNEL_EXEC_NOCACHE __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
119#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
120#define PAGE_KERNEL_LARGE_NOCACHE __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
121#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
122#define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL)
123#define PAGE_KERNEL_VSYSCALL_NOCACHE __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
124
125#define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO)
126#define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE)
127#define PAGE_KERNEL_IO_UC_MINUS __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
128#define PAGE_KERNEL_IO_WC __pgprot(__PAGE_KERNEL_IO_WC)
129
130/* xwr */
131#define __P000 PAGE_NONE
132#define __P001 PAGE_READONLY
133#define __P010 PAGE_COPY
134#define __P011 PAGE_COPY
135#define __P100 PAGE_READONLY_EXEC
136#define __P101 PAGE_READONLY_EXEC
137#define __P110 PAGE_COPY_EXEC
138#define __P111 PAGE_COPY_EXEC
139
140#define __S000 PAGE_NONE
141#define __S001 PAGE_READONLY
142#define __S010 PAGE_SHARED
143#define __S011 PAGE_SHARED
144#define __S100 PAGE_READONLY_EXEC
145#define __S101 PAGE_READONLY_EXEC
146#define __S110 PAGE_SHARED_EXEC
147#define __S111 PAGE_SHARED_EXEC
148
149/*
150 * early identity mapping pte attrib macros.
151 */
152#ifdef CONFIG_X86_64
153#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
154#else
155/*
156 * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
157 * bits are combined, this will alow user to access the high address mapped
158 * VDSO in the presence of CONFIG_COMPAT_VDSO
159 */
160#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
161#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */
162#define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
163#endif
164 7
165/* 8/*
166 * Macro to mark a page protection value as UC- 9 * Macro to mark a page protection value as UC-
@@ -172,9 +15,6 @@
172 15
173#ifndef __ASSEMBLY__ 16#ifndef __ASSEMBLY__
174 17
175#define pgprot_writecombine pgprot_writecombine
176extern pgprot_t pgprot_writecombine(pgprot_t prot);
177
178/* 18/*
179 * ZERO_PAGE is a global shared page that is always zero: used 19 * ZERO_PAGE is a global shared page that is always zero: used
180 * for zero-mapped memory areas etc.. 20 * for zero-mapped memory areas etc..
@@ -316,8 +156,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
316 return pte_set_flags(pte, _PAGE_SPECIAL); 156 return pte_set_flags(pte, _PAGE_SPECIAL);
317} 157}
318 158
319extern pteval_t __supported_pte_mask;
320
321static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) 159static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
322{ 160{
323 return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) | 161 return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) |
@@ -376,32 +214,6 @@ static inline int is_new_memtype_allowed(unsigned long flags,
376 return 1; 214 return 1;
377} 215}
378 216
379#ifndef __ASSEMBLY__
380/* Indicate that x86 has its own track and untrack pfn vma functions */
381#define __HAVE_PFNMAP_TRACKING
382
383#define __HAVE_PHYS_MEM_ACCESS_PROT
384struct file;
385pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
386 unsigned long size, pgprot_t vma_prot);
387int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
388 unsigned long size, pgprot_t *vma_prot);
389#endif
390
391/* Install a pte for a particular vaddr in kernel space. */
392void set_pte_vaddr(unsigned long vaddr, pte_t pte);
393
394#ifdef CONFIG_X86_32
395extern void native_pagetable_setup_start(pgd_t *base);
396extern void native_pagetable_setup_done(pgd_t *base);
397#else
398static inline void native_pagetable_setup_start(pgd_t *base) {}
399static inline void native_pagetable_setup_done(pgd_t *base) {}
400#endif
401
402struct seq_file;
403extern void arch_report_meminfo(struct seq_file *m);
404
405#ifdef CONFIG_PARAVIRT 217#ifdef CONFIG_PARAVIRT
406#include <asm/paravirt.h> 218#include <asm/paravirt.h>
407#else /* !CONFIG_PARAVIRT */ 219#else /* !CONFIG_PARAVIRT */
@@ -662,28 +474,6 @@ static inline int pgd_none(pgd_t pgd)
662 474
663#ifndef __ASSEMBLY__ 475#ifndef __ASSEMBLY__
664 476
665enum {
666 PG_LEVEL_NONE,
667 PG_LEVEL_4K,
668 PG_LEVEL_2M,
669 PG_LEVEL_1G,
670 PG_LEVEL_NUM
671};
672
673#ifdef CONFIG_PROC_FS
674extern void update_page_count(int level, unsigned long pages);
675#else
676static inline void update_page_count(int level, unsigned long pages) { }
677#endif
678
679/*
680 * Helper function that returns the kernel pagetable entry controlling
681 * the virtual address 'address'. NULL means no pagetable entry present.
682 * NOTE: the return type is pte_t but if the pmd is PSE then we return it
683 * as a pte too.
684 */
685extern pte_t *lookup_address(unsigned long address, unsigned int *level);
686
687/* local pte updates need not use xchg for locking */ 477/* local pte updates need not use xchg for locking */
688static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) 478static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
689{ 479{
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
new file mode 100644
index 000000000000..f80f5a66bb85
--- /dev/null
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -0,0 +1,220 @@
1#ifndef _ASM_X86_PGTABLE_DEFS_H
2#define _ASM_X86_PGTABLE_DEFS_H
3
4#include <linux/const.h>
5
6#define FIRST_USER_ADDRESS 0
7
8#define _PAGE_BIT_PRESENT 0 /* is present */
9#define _PAGE_BIT_RW 1 /* writeable */
10#define _PAGE_BIT_USER 2 /* userspace addressable */
11#define _PAGE_BIT_PWT 3 /* page write through */
12#define _PAGE_BIT_PCD 4 /* page cache disabled */
13#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
14#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
15#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
16#define _PAGE_BIT_PAT 7 /* on 4KB pages */
17#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
18#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
19#define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
20#define _PAGE_BIT_UNUSED3 11
21#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
22#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
23#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
24#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
25
26/* If _PAGE_BIT_PRESENT is clear, we use these: */
27/* - if the user mapped it with PROT_NONE; pte_present gives true */
28#define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
29/* - set: nonlinear file mapping, saved PTE; unset:swap */
30#define _PAGE_BIT_FILE _PAGE_BIT_DIRTY
31
32#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
33#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
34#define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
35#define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
36#define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
37#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
38#define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
39#define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
40#define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
41#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
42#define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
43#define _PAGE_UNUSED3 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3)
44#define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
45#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
46#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
47#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
48#define __HAVE_ARCH_PTE_SPECIAL
49
50#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
51#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
52#else
53#define _PAGE_NX (_AT(pteval_t, 0))
54#endif
55
56#define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
57#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
58
59#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
60 _PAGE_ACCESSED | _PAGE_DIRTY)
61#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \
62 _PAGE_DIRTY)
63
64/* Set of bits not changed in pte_modify */
65#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
66 _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
67
68#define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT)
69#define _PAGE_CACHE_WB (0)
70#define _PAGE_CACHE_WC (_PAGE_PWT)
71#define _PAGE_CACHE_UC_MINUS (_PAGE_PCD)
72#define _PAGE_CACHE_UC (_PAGE_PCD | _PAGE_PWT)
73
74#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
75#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
76 _PAGE_ACCESSED | _PAGE_NX)
77
78#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \
79 _PAGE_USER | _PAGE_ACCESSED)
80#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
81 _PAGE_ACCESSED | _PAGE_NX)
82#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
83 _PAGE_ACCESSED)
84#define PAGE_COPY PAGE_COPY_NOEXEC
85#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \
86 _PAGE_ACCESSED | _PAGE_NX)
87#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
88 _PAGE_ACCESSED)
89
90#define __PAGE_KERNEL_EXEC \
91 (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
92#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
93
94#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
95#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
96#define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
97#define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC)
98#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
99#define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD)
100#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
101#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
102#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
103#define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
104#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
105
106#define __PAGE_KERNEL_IO (__PAGE_KERNEL | _PAGE_IOMAP)
107#define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
108#define __PAGE_KERNEL_IO_UC_MINUS (__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
109#define __PAGE_KERNEL_IO_WC (__PAGE_KERNEL_WC | _PAGE_IOMAP)
110
111#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
112#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
113#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
114#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
115#define PAGE_KERNEL_WC __pgprot(__PAGE_KERNEL_WC)
116#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
117#define PAGE_KERNEL_UC_MINUS __pgprot(__PAGE_KERNEL_UC_MINUS)
118#define PAGE_KERNEL_EXEC_NOCACHE __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
119#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
120#define PAGE_KERNEL_LARGE_NOCACHE __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
121#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
122#define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL)
123#define PAGE_KERNEL_VSYSCALL_NOCACHE __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
124
125#define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO)
126#define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE)
127#define PAGE_KERNEL_IO_UC_MINUS __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
128#define PAGE_KERNEL_IO_WC __pgprot(__PAGE_KERNEL_IO_WC)
129
130/* xwr */
131#define __P000 PAGE_NONE
132#define __P001 PAGE_READONLY
133#define __P010 PAGE_COPY
134#define __P011 PAGE_COPY
135#define __P100 PAGE_READONLY_EXEC
136#define __P101 PAGE_READONLY_EXEC
137#define __P110 PAGE_COPY_EXEC
138#define __P111 PAGE_COPY_EXEC
139
140#define __S000 PAGE_NONE
141#define __S001 PAGE_READONLY
142#define __S010 PAGE_SHARED
143#define __S011 PAGE_SHARED
144#define __S100 PAGE_READONLY_EXEC
145#define __S101 PAGE_READONLY_EXEC
146#define __S110 PAGE_SHARED_EXEC
147#define __S111 PAGE_SHARED_EXEC
148
149/*
150 * early identity mapping pte attrib macros.
151 */
152#ifdef CONFIG_X86_64
153#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
154#else
155/*
156 * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
157 * bits are combined, this will alow user to access the high address mapped
158 * VDSO in the presence of CONFIG_COMPAT_VDSO
159 */
160#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
161#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */
162#define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
163#endif
164
165#ifndef __ASSEMBLY__
166
167extern pteval_t __supported_pte_mask;
168
169#define pgprot_writecombine pgprot_writecombine
170extern pgprot_t pgprot_writecombine(pgprot_t prot);
171
172/* Indicate that x86 has its own track and untrack pfn vma functions */
173#define __HAVE_PFNMAP_TRACKING
174
175#define __HAVE_PHYS_MEM_ACCESS_PROT
176struct file;
177pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
178 unsigned long size, pgprot_t vma_prot);
179int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
180 unsigned long size, pgprot_t *vma_prot);
181
182/* Install a pte for a particular vaddr in kernel space. */
183void set_pte_vaddr(unsigned long vaddr, pte_t pte);
184
185#ifdef CONFIG_X86_32
186extern void native_pagetable_setup_start(pgd_t *base);
187extern void native_pagetable_setup_done(pgd_t *base);
188#else
189static inline void native_pagetable_setup_start(pgd_t *base) {}
190static inline void native_pagetable_setup_done(pgd_t *base) {}
191#endif
192
193struct seq_file;
194extern void arch_report_meminfo(struct seq_file *m);
195
196enum {
197 PG_LEVEL_NONE,
198 PG_LEVEL_4K,
199 PG_LEVEL_2M,
200 PG_LEVEL_1G,
201 PG_LEVEL_NUM
202};
203
204#ifdef CONFIG_PROC_FS
205extern void update_page_count(int level, unsigned long pages);
206#else
207static inline void update_page_count(int level, unsigned long pages) { }
208#endif
209
210/*
211 * Helper function that returns the kernel pagetable entry controlling
212 * the virtual address 'address'. NULL means no pagetable entry present.
213 * NOTE: the return type is pte_t but if the pmd is PSE then we return it
214 * as a pte too.
215 */
216extern pte_t *lookup_address(unsigned long address, unsigned int *level);
217
218#endif /* !__ASSEMBLY__ */
219
220#endif /* _ASM_X86_PGTABLE_DEFS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 21:12:26 -0500