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-rw-r--r--arch/x86/include/asm/page.h64
-rw-r--r--arch/x86/include/asm/page_32.h89
-rw-r--r--arch/x86/include/asm/page_32_types.h90
-rw-r--r--arch/x86/include/asm/page_64.h101
-rw-r--r--arch/x86/include/asm/page_64.h.rej114
-rw-r--r--arch/x86/include/asm/page_64_types.h102
-rw-r--r--arch/x86/include/asm/page_types.h77
7 files changed, 389 insertions, 248 deletions
diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index 40226999cbf..3b2d2af951c 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -1,42 +1,9 @@
1#ifndef _ASM_X86_PAGE_H 1#ifndef _ASM_X86_PAGE_H
2#define _ASM_X86_PAGE_H 2#define _ASM_X86_PAGE_H
3 3
4#include <linux/const.h>
5
6/* PAGE_SHIFT determines the page size */
7#define PAGE_SHIFT 12
8#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
9#define PAGE_MASK (~(PAGE_SIZE-1))
10
11#ifdef __KERNEL__ 4#ifdef __KERNEL__
12 5
13#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) 6#include <asm/page_types.h>
14#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
15
16/* Cast PAGE_MASK to a signed type so that it is sign-extended if
17 virtual addresses are 32-bits but physical addresses are larger
18 (ie, 32-bit PAE). */
19#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
20
21/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
22#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
23
24/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
25#define PTE_FLAGS_MASK (~PTE_PFN_MASK)
26
27#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
28#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
29
30#define HPAGE_SHIFT PMD_SHIFT
31#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
32#define HPAGE_MASK (~(HPAGE_SIZE - 1))
33#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
34
35#define HUGE_MAX_HSTATE 2
36
37#ifndef __ASSEMBLY__
38#include <linux/types.h>
39#endif
40 7
41#ifdef CONFIG_X86_64 8#ifdef CONFIG_X86_64
42#include <asm/page_64.h> 9#include <asm/page_64.h>
@@ -44,39 +11,18 @@
44#include <asm/page_32.h> 11#include <asm/page_32.h>
45#endif /* CONFIG_X86_64 */ 12#endif /* CONFIG_X86_64 */
46 13
47#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
48
49#define VM_DATA_DEFAULT_FLAGS \
50 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
51 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
52
53
54#ifndef __ASSEMBLY__ 14#ifndef __ASSEMBLY__
55 15
56typedef struct { pgdval_t pgd; } pgd_t;
57typedef struct { pgprotval_t pgprot; } pgprot_t;
58
59extern int page_is_ram(unsigned long pagenr);
60extern int pagerange_is_ram(unsigned long start, unsigned long end);
61extern int devmem_is_allowed(unsigned long pagenr);
62extern void map_devmem(unsigned long pfn, unsigned long size,
63 pgprot_t vma_prot);
64extern void unmap_devmem(unsigned long pfn, unsigned long size,
65 pgprot_t vma_prot);
66
67extern unsigned long max_low_pfn_mapped;
68extern unsigned long max_pfn_mapped;
69
70struct page; 16struct page;
71 17
72static inline void clear_user_page(void *page, unsigned long vaddr, 18static inline void clear_user_page(void *page, unsigned long vaddr,
73 struct page *pg) 19 struct page *pg)
74{ 20{
75 clear_page(page); 21 clear_page(page);
76} 22}
77 23
78static inline void copy_user_page(void *to, void *from, unsigned long vaddr, 24static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
79 struct page *topage) 25 struct page *topage)
80{ 26{
81 copy_page(to, from); 27 copy_page(to, from);
82} 28}
@@ -102,8 +48,6 @@ static inline pgdval_t pgd_flags(pgd_t pgd)
102 48
103#if PAGETABLE_LEVELS >= 3 49#if PAGETABLE_LEVELS >= 3
104#if PAGETABLE_LEVELS == 4 50#if PAGETABLE_LEVELS == 4
105typedef struct { pudval_t pud; } pud_t;
106
107static inline pud_t native_make_pud(pmdval_t val) 51static inline pud_t native_make_pud(pmdval_t val)
108{ 52{
109 return (pud_t) { val }; 53 return (pud_t) { val };
@@ -127,8 +71,6 @@ static inline pudval_t pud_flags(pud_t pud)
127 return native_pud_val(pud) & PTE_FLAGS_MASK; 71 return native_pud_val(pud) & PTE_FLAGS_MASK;
128} 72}
129 73
130typedef struct { pmdval_t pmd; } pmd_t;
131
132static inline pmd_t native_make_pmd(pmdval_t val) 74static inline pmd_t native_make_pmd(pmdval_t val)
133{ 75{
134 return (pmd_t) { val }; 76 return (pmd_t) { val };
diff --git a/arch/x86/include/asm/page_32.h b/arch/x86/include/asm/page_32.h
index bcde0d7b432..b3f0bf79e84 100644
--- a/arch/x86/include/asm/page_32.h
+++ b/arch/x86/include/asm/page_32.h
@@ -1,82 +1,12 @@
1#ifndef _ASM_X86_PAGE_32_H 1#ifndef _ASM_X86_PAGE_32_H
2#define _ASM_X86_PAGE_32_H 2#define _ASM_X86_PAGE_32_H
3 3
4/* 4#include <asm/page_32_types.h>
5 * This handles the memory map.
6 *
7 * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
8 * a virtual address space of one gigabyte, which limits the
9 * amount of physical memory you can use to about 950MB.
10 *
11 * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
12 * and CONFIG_HIGHMEM64G options in the kernel configuration.
13 */
14#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
15
16#ifdef CONFIG_4KSTACKS
17#define THREAD_ORDER 0
18#else
19#define THREAD_ORDER 1
20#endif
21#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
22
23#define STACKFAULT_STACK 0
24#define DOUBLEFAULT_STACK 1
25#define NMI_STACK 0
26#define DEBUG_STACK 0
27#define MCE_STACK 0
28#define N_EXCEPTION_STACKS 1
29
30#ifdef CONFIG_X86_PAE
31/* 44=32+12, the limit we can fit into an unsigned long pfn */
32#define __PHYSICAL_MASK_SHIFT 44
33#define __VIRTUAL_MASK_SHIFT 32
34#define PAGETABLE_LEVELS 3
35
36#ifndef __ASSEMBLY__
37typedef u64 pteval_t;
38typedef u64 pmdval_t;
39typedef u64 pudval_t;
40typedef u64 pgdval_t;
41typedef u64 pgprotval_t;
42
43typedef union {
44 struct {
45 unsigned long pte_low, pte_high;
46 };
47 pteval_t pte;
48} pte_t;
49#endif /* __ASSEMBLY__
50 */
51#else /* !CONFIG_X86_PAE */
52#define __PHYSICAL_MASK_SHIFT 32
53#define __VIRTUAL_MASK_SHIFT 32
54#define PAGETABLE_LEVELS 2
55
56#ifndef __ASSEMBLY__
57typedef unsigned long pteval_t;
58typedef unsigned long pmdval_t;
59typedef unsigned long pudval_t;
60typedef unsigned long pgdval_t;
61typedef unsigned long pgprotval_t;
62
63typedef union {
64 pteval_t pte;
65 pteval_t pte_low;
66} pte_t;
67
68#endif /* __ASSEMBLY__ */
69#endif /* CONFIG_X86_PAE */
70
71#ifndef __ASSEMBLY__
72typedef struct page *pgtable_t;
73#endif
74 5
75#ifdef CONFIG_HUGETLB_PAGE 6#ifdef CONFIG_HUGETLB_PAGE
76#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA 7#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
77#endif 8#endif
78 9
79#ifndef __ASSEMBLY__
80#define __phys_addr_nodebug(x) ((x) - PAGE_OFFSET) 10#define __phys_addr_nodebug(x) ((x) - PAGE_OFFSET)
81#ifdef CONFIG_DEBUG_VIRTUAL 11#ifdef CONFIG_DEBUG_VIRTUAL
82extern unsigned long __phys_addr(unsigned long); 12extern unsigned long __phys_addr(unsigned long);
@@ -89,22 +19,7 @@ extern unsigned long __phys_addr(unsigned long);
89#define pfn_valid(pfn) ((pfn) < max_mapnr) 19#define pfn_valid(pfn) ((pfn) < max_mapnr)
90#endif /* CONFIG_FLATMEM */ 20#endif /* CONFIG_FLATMEM */
91 21
92extern int nx_enabled; 22#ifndef __ASSEMBLY__
93
94/*
95 * This much address space is reserved for vmalloc() and iomap()
96 * as well as fixmap mappings.
97 */
98extern unsigned int __VMALLOC_RESERVE;
99extern int sysctl_legacy_va_layout;
100
101extern void find_low_pfn_range(void);
102extern unsigned long init_memory_mapping(unsigned long start,
103 unsigned long end);
104extern void initmem_init(unsigned long, unsigned long);
105extern void free_initmem(void);
106extern void setup_bootmem_allocator(void);
107
108 23
109#ifdef CONFIG_X86_USE_3DNOW 24#ifdef CONFIG_X86_USE_3DNOW
110#include <asm/mmx.h> 25#include <asm/mmx.h>
diff --git a/arch/x86/include/asm/page_32_types.h b/arch/x86/include/asm/page_32_types.h
new file mode 100644
index 00000000000..b7b5402d7ab
--- /dev/null
+++ b/arch/x86/include/asm/page_32_types.h
@@ -0,0 +1,90 @@
1#ifndef _ASM_X86_PAGE_32_DEFS_H
2#define _ASM_X86_PAGE_32_DEFS_H
3
4#include <linux/const.h>
5
6/*
7 * This handles the memory map.
8 *
9 * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
10 * a virtual address space of one gigabyte, which limits the
11 * amount of physical memory you can use to about 950MB.
12 *
13 * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
14 * and CONFIG_HIGHMEM64G options in the kernel configuration.
15 */
16#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
17
18#ifdef CONFIG_4KSTACKS
19#define THREAD_ORDER 0
20#else
21#define THREAD_ORDER 1
22#endif
23#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
24
25#define STACKFAULT_STACK 0
26#define DOUBLEFAULT_STACK 1
27#define NMI_STACK 0
28#define DEBUG_STACK 0
29#define MCE_STACK 0
30#define N_EXCEPTION_STACKS 1
31
32#ifdef CONFIG_X86_PAE
33/* 44=32+12, the limit we can fit into an unsigned long pfn */
34#define __PHYSICAL_MASK_SHIFT 44
35#define __VIRTUAL_MASK_SHIFT 32
36#define PAGETABLE_LEVELS 3
37
38#else /* !CONFIG_X86_PAE */
39#define __PHYSICAL_MASK_SHIFT 32
40#define __VIRTUAL_MASK_SHIFT 32
41#define PAGETABLE_LEVELS 2
42#endif /* CONFIG_X86_PAE */
43
44#ifndef __ASSEMBLY__
45
46#ifdef CONFIG_X86_PAE
47typedef u64 pteval_t;
48typedef u64 pmdval_t;
49typedef u64 pudval_t;
50typedef u64 pgdval_t;
51typedef u64 pgprotval_t;
52
53typedef union {
54 struct {
55 unsigned long pte_low, pte_high;
56 };
57 pteval_t pte;
58} pte_t;
59#else /* !CONFIG_X86_PAE */
60typedef unsigned long pteval_t;
61typedef unsigned long pmdval_t;
62typedef unsigned long pudval_t;
63typedef unsigned long pgdval_t;
64typedef unsigned long pgprotval_t;
65
66typedef union {
67 pteval_t pte;
68 pteval_t pte_low;
69} pte_t;
70#endif /* CONFIG_X86_PAE */
71
72extern int nx_enabled;
73
74/*
75 * This much address space is reserved for vmalloc() and iomap()
76 * as well as fixmap mappings.
77 */
78extern unsigned int __VMALLOC_RESERVE;
79extern int sysctl_legacy_va_layout;
80
81extern void find_low_pfn_range(void);
82extern unsigned long init_memory_mapping(unsigned long start,
83 unsigned long end);
84extern void initmem_init(unsigned long, unsigned long);
85extern void free_initmem(void);
86extern void setup_bootmem_allocator(void);
87
88#endif /* !__ASSEMBLY__ */
89
90#endif /* _ASM_X86_PAGE_32_DEFS_H */
diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h
index e27fdbe5f9e..072694ed81a 100644
--- a/arch/x86/include/asm/page_64.h
+++ b/arch/x86/include/asm/page_64.h
@@ -1,105 +1,6 @@
1#ifndef _ASM_X86_PAGE_64_H 1#ifndef _ASM_X86_PAGE_64_H
2#define _ASM_X86_PAGE_64_H 2#define _ASM_X86_PAGE_64_H
3 3
4#define PAGETABLE_LEVELS 4 4#include <asm/page_64_types.h>
5
6#define THREAD_ORDER 1
7#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
8#define CURRENT_MASK (~(THREAD_SIZE - 1))
9
10#define EXCEPTION_STACK_ORDER 0
11#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
12
13#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
14#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
15
16#define IRQ_STACK_ORDER 2
17#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)
18
19#define STACKFAULT_STACK 1
20#define DOUBLEFAULT_STACK 2
21#define NMI_STACK 3
22#define DEBUG_STACK 4
23#define MCE_STACK 5
24#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
25
26#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
27#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
28
29/*
30 * Set __PAGE_OFFSET to the most negative possible address +
31 * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a
32 * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's
33 * what Xen requires.
34 */
35#define __PAGE_OFFSET _AC(0xffff880000000000, UL)
36
37#define __PHYSICAL_START CONFIG_PHYSICAL_START
38#define __KERNEL_ALIGN 0x200000
39
40/*
41 * Make sure kernel is aligned to 2MB address. Catching it at compile
42 * time is better. Change your config file and compile the kernel
43 * for a 2MB aligned address (CONFIG_PHYSICAL_START)
44 */
45#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
46#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
47#endif
48
49#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
50#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
51
52/* See Documentation/x86_64/mm.txt for a description of the memory map. */
53#define __PHYSICAL_MASK_SHIFT 46
54#define __VIRTUAL_MASK_SHIFT 48
55
56/*
57 * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
58 * arch/x86/kernel/head_64.S), and it is mapped here:
59 */
60#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024)
61#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
62
63#ifndef __ASSEMBLY__
64void clear_page(void *page);
65void copy_page(void *to, void *from);
66
67/* duplicated to the one in bootmem.h */
68extern unsigned long max_pfn;
69extern unsigned long phys_base;
70
71extern unsigned long __phys_addr(unsigned long);
72#define __phys_reloc_hide(x) (x)
73
74/*
75 * These are used to make use of C type-checking..
76 */
77typedef unsigned long pteval_t;
78typedef unsigned long pmdval_t;
79typedef unsigned long pudval_t;
80typedef unsigned long pgdval_t;
81typedef unsigned long pgprotval_t;
82
83typedef struct page *pgtable_t;
84
85typedef struct { pteval_t pte; } pte_t;
86
87#define vmemmap ((struct page *)VMEMMAP_START)
88
89extern unsigned long init_memory_mapping(unsigned long start,
90 unsigned long end);
91
92extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
93extern void free_initmem(void);
94
95extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
96extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
97
98#endif /* !__ASSEMBLY__ */
99
100#ifdef CONFIG_FLATMEM
101#define pfn_valid(pfn) ((pfn) < max_pfn)
102#endif
103
104 5
105#endif /* _ASM_X86_PAGE_64_H */ 6#endif /* _ASM_X86_PAGE_64_H */
diff --git a/arch/x86/include/asm/page_64.h.rej b/arch/x86/include/asm/page_64.h.rej
new file mode 100644
index 00000000000..9b1807f1859
--- /dev/null
+++ b/arch/x86/include/asm/page_64.h.rej
@@ -0,0 +1,114 @@
1***************
2*** 1,105 ****
3 #ifndef _ASM_X86_PAGE_64_H
4 #define _ASM_X86_PAGE_64_H
5
6- #define PAGETABLE_LEVELS 4
7-
8- #define THREAD_ORDER 1
9- #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
10- #define CURRENT_MASK (~(THREAD_SIZE - 1))
11-
12- #define EXCEPTION_STACK_ORDER 0
13- #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
14-
15- #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
16- #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
17-
18- #define IRQSTACK_ORDER 2
19- #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
20-
21- #define STACKFAULT_STACK 1
22- #define DOUBLEFAULT_STACK 2
23- #define NMI_STACK 3
24- #define DEBUG_STACK 4
25- #define MCE_STACK 5
26- #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
27-
28- #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
29- #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
30-
31- /*
32- * Set __PAGE_OFFSET to the most negative possible address +
33- * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a
34- * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's
35- * what Xen requires.
36- */
37- #define __PAGE_OFFSET _AC(0xffff880000000000, UL)
38-
39- #define __PHYSICAL_START CONFIG_PHYSICAL_START
40- #define __KERNEL_ALIGN 0x200000
41-
42- /*
43- * Make sure kernel is aligned to 2MB address. Catching it at compile
44- * time is better. Change your config file and compile the kernel
45- * for a 2MB aligned address (CONFIG_PHYSICAL_START)
46- */
47- #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
48- #error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
49- #endif
50-
51- #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
52- #define __START_KERNEL_map _AC(0xffffffff80000000, UL)
53-
54- /* See Documentation/x86_64/mm.txt for a description of the memory map. */
55- #define __PHYSICAL_MASK_SHIFT 46
56- #define __VIRTUAL_MASK_SHIFT 48
57-
58- /*
59- * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
60- * arch/x86/kernel/head_64.S), and it is mapped here:
61- */
62- #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024)
63- #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
64-
65- #ifndef __ASSEMBLY__
66- void clear_page(void *page);
67- void copy_page(void *to, void *from);
68-
69- /* duplicated to the one in bootmem.h */
70- extern unsigned long max_pfn;
71- extern unsigned long phys_base;
72-
73- extern unsigned long __phys_addr(unsigned long);
74- #define __phys_reloc_hide(x) (x)
75-
76- /*
77- * These are used to make use of C type-checking..
78- */
79- typedef unsigned long pteval_t;
80- typedef unsigned long pmdval_t;
81- typedef unsigned long pudval_t;
82- typedef unsigned long pgdval_t;
83- typedef unsigned long pgprotval_t;
84-
85- typedef struct page *pgtable_t;
86-
87- typedef struct { pteval_t pte; } pte_t;
88-
89- #define vmemmap ((struct page *)VMEMMAP_START)
90-
91- extern unsigned long init_memory_mapping(unsigned long start,
92- unsigned long end);
93-
94- extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
95- extern void free_initmem(void);
96-
97- extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
98- extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
99-
100- #endif /* !__ASSEMBLY__ */
101-
102- #ifdef CONFIG_FLATMEM
103- #define pfn_valid(pfn) ((pfn) < max_pfn)
104- #endif
105-
106
107 #endif /* _ASM_X86_PAGE_64_H */
108--- 1,6 ----
109 #ifndef _ASM_X86_PAGE_64_H
110 #define _ASM_X86_PAGE_64_H
111
112+ #include <asm/page_64_types.h>
113
114 #endif /* _ASM_X86_PAGE_64_H */
diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h
new file mode 100644
index 00000000000..d00cd388082
--- /dev/null
+++ b/arch/x86/include/asm/page_64_types.h
@@ -0,0 +1,102 @@
1#ifndef _ASM_X86_PAGE_64_DEFS_H
2#define _ASM_X86_PAGE_64_DEFS_H
3
4#define PAGETABLE_LEVELS 4
5
6#define THREAD_ORDER 1
7#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
8#define CURRENT_MASK (~(THREAD_SIZE - 1))
9
10#define EXCEPTION_STACK_ORDER 0
11#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
12
13#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
14#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
15
16#define IRQ_STACK_ORDER 2
17#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)
18
19#define STACKFAULT_STACK 1
20#define DOUBLEFAULT_STACK 2
21#define NMI_STACK 3
22#define DEBUG_STACK 4
23#define MCE_STACK 5
24#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
25
26#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
27#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
28
29/*
30 * Set __PAGE_OFFSET to the most negative possible address +
31 * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a
32 * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's
33 * what Xen requires.
34 */
35#define __PAGE_OFFSET _AC(0xffff880000000000, UL)
36
37#define __PHYSICAL_START CONFIG_PHYSICAL_START
38#define __KERNEL_ALIGN 0x200000
39
40/*
41 * Make sure kernel is aligned to 2MB address. Catching it at compile
42 * time is better. Change your config file and compile the kernel
43 * for a 2MB aligned address (CONFIG_PHYSICAL_START)
44 */
45#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
46#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
47#endif
48
49#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
50#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
51
52/* See Documentation/x86_64/mm.txt for a description of the memory map. */
53#define __PHYSICAL_MASK_SHIFT 46
54#define __VIRTUAL_MASK_SHIFT 48
55
56/*
57 * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
58 * arch/x86/kernel/head_64.S), and it is mapped here:
59 */
60#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024)
61#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
62
63#ifndef __ASSEMBLY__
64void clear_page(void *page);
65void copy_page(void *to, void *from);
66
67/* duplicated to the one in bootmem.h */
68extern unsigned long max_pfn;
69extern unsigned long phys_base;
70
71extern unsigned long __phys_addr(unsigned long);
72#define __phys_reloc_hide(x) (x)
73
74/*
75 * These are used to make use of C type-checking..
76 */
77typedef unsigned long pteval_t;
78typedef unsigned long pmdval_t;
79typedef unsigned long pudval_t;
80typedef unsigned long pgdval_t;
81typedef unsigned long pgprotval_t;
82
83typedef struct { pteval_t pte; } pte_t;
84
85#define vmemmap ((struct page *)VMEMMAP_START)
86
87extern unsigned long init_memory_mapping(unsigned long start,
88 unsigned long end);
89
90extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
91extern void free_initmem(void);
92
93extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
94extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
95
96#endif /* !__ASSEMBLY__ */
97
98#ifdef CONFIG_FLATMEM
99#define pfn_valid(pfn) ((pfn) < max_pfn)
100#endif
101
102#endif /* _ASM_X86_PAGE_64_DEFS_H */
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h
new file mode 100644
index 00000000000..65787ad4c59
--- /dev/null
+++ b/arch/x86/include/asm/page_types.h
@@ -0,0 +1,77 @@
1#ifndef _ASM_X86_PAGE_DEFS_H
2#define _ASM_X86_PAGE_DEFS_H
3
4#include <linux/const.h>
5
6/* PAGE_SHIFT determines the page size */
7#define PAGE_SHIFT 12
8#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
9#define PAGE_MASK (~(PAGE_SIZE-1))
10
11#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1)
12#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
13
14/* Cast PAGE_MASK to a signed type so that it is sign-extended if
15 virtual addresses are 32-bits but physical addresses are larger
16 (ie, 32-bit PAE). */
17#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
18
19/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
20#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
21
22/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
23#define PTE_FLAGS_MASK (~PTE_PFN_MASK)
24
25#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
26#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
27
28#define HPAGE_SHIFT PMD_SHIFT
29#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
30#define HPAGE_MASK (~(HPAGE_SIZE - 1))
31#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
32
33#define HUGE_MAX_HSTATE 2
34
35#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
36
37#define VM_DATA_DEFAULT_FLAGS \
38 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
39 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
40
41#ifdef CONFIG_X86_64
42#include <asm/page_64_types.h>
43#else
44#include <asm/page_32_types.h>
45#endif /* CONFIG_X86_64 */
46
47#ifndef __ASSEMBLY__
48
49#include <linux/types.h>
50
51typedef struct { pgdval_t pgd; } pgd_t;
52typedef struct { pgprotval_t pgprot; } pgprot_t;
53
54#if PAGETABLE_LEVELS > 3
55typedef struct { pudval_t pud; } pud_t;
56#endif
57
58#if PAGETABLE_LEVELS > 2
59typedef struct { pmdval_t pmd; } pmd_t;
60#endif
61
62typedef struct page *pgtable_t;
63
64extern int page_is_ram(unsigned long pagenr);
65extern int pagerange_is_ram(unsigned long start, unsigned long end);
66extern int devmem_is_allowed(unsigned long pagenr);
67extern void map_devmem(unsigned long pfn, unsigned long size,
68 pgprot_t vma_prot);
69extern void unmap_devmem(unsigned long pfn, unsigned long size,
70 pgprot_t vma_prot);
71
72extern unsigned long max_low_pfn_mapped;
73extern unsigned long max_pfn_mapped;
74
75#endif /* !__ASSEMBLY__ */
76
77#endif /* _ASM_X86_PAGE_DEFS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-21 04:00:34 -0400