x86: create _types.h counterparts for page*.h

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>

arch/x86/include/asm/page.h

 #ifndef _ASM_X86_PAGE_H
 #define _ASM_X86_PAGE_H
 
-#include <linux/const.h>
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT	12
-#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK	(~(PAGE_SIZE-1))
-
 #ifdef __KERNEL__
 
-#define __PHYSICAL_MASK		((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1)
-#define __VIRTUAL_MASK		((1UL << __VIRTUAL_MASK_SHIFT) - 1)
-
-/* Cast PAGE_MASK to a signed type so that it is sign-extended if
-   virtual addresses are 32-bits but physical addresses are larger
-   (ie, 32-bit PAE). */
-#define PHYSICAL_PAGE_MASK	(((signed long)PAGE_MASK) & __PHYSICAL_MASK)
-
-/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
-#define PTE_PFN_MASK		((pteval_t)PHYSICAL_PAGE_MASK)
-
-/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
-#define PTE_FLAGS_MASK		(~PTE_PFN_MASK)
-
-#define PMD_PAGE_SIZE		(_AC(1, UL) << PMD_SHIFT)
-#define PMD_PAGE_MASK		(~(PMD_PAGE_SIZE-1))
-
-#define HPAGE_SHIFT		PMD_SHIFT
-#define HPAGE_SIZE		(_AC(1,UL) << HPAGE_SHIFT)
-#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
-
-#define HUGE_MAX_HSTATE 2
-
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-#endif
+#include <asm/page_types.h>
 
 #ifdef CONFIG_X86_64
 #include <asm/page_64.h>
@@ -44,39 +11,18 @@
 #include <asm/page_32.h>
 #endif	/* CONFIG_X86_64 */
 
-#define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)
-
-#define VM_DATA_DEFAULT_FLAGS \
-	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
-	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-
 #ifndef __ASSEMBLY__
 
-typedef struct { pgdval_t pgd; } pgd_t;
-typedef struct { pgprotval_t pgprot; } pgprot_t;
-
-extern int page_is_ram(unsigned long pagenr);
-extern int pagerange_is_ram(unsigned long start, unsigned long end);
-extern int devmem_is_allowed(unsigned long pagenr);
-extern void map_devmem(unsigned long pfn, unsigned long size,
-		       pgprot_t vma_prot);
-extern void unmap_devmem(unsigned long pfn, unsigned long size,
-			 pgprot_t vma_prot);
-
-extern unsigned long max_low_pfn_mapped;
-extern unsigned long max_pfn_mapped;
-
 struct page;
 
 static inline void clear_user_page(void *page, unsigned long vaddr,
-				struct page *pg)
+				   struct page *pg)
 {
 	clear_page(page);
 }
 
 static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
-				struct page *topage)
+				  struct page *topage)
 {
 	copy_page(to, from);
 }
@@ -102,8 +48,6 @@ static inline pgdval_t pgd_flags(pgd_t pgd)
 
 #if PAGETABLE_LEVELS >= 3
 #if PAGETABLE_LEVELS == 4
-typedef struct { pudval_t pud; } pud_t;
-
 static inline pud_t native_make_pud(pmdval_t val)
 {
 	return (pud_t) { val };
@@ -127,8 +71,6 @@ static inline pudval_t pud_flags(pud_t pud)
 	return native_pud_val(pud) & PTE_FLAGS_MASK;
 }
 
-typedef struct { pmdval_t pmd; } pmd_t;
-
 static inline pmd_t native_make_pmd(pmdval_t val)
 {
 	return (pmd_t) { val };

arch/x86/include/asm/page_32.h

 #ifndef _ASM_X86_PAGE_32_H
 #define _ASM_X86_PAGE_32_H
 
-/*
- * This handles the memory map.
- *
- * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
- * a virtual address space of one gigabyte, which limits the
- * amount of physical memory you can use to about 950MB.
- *
- * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
- * and CONFIG_HIGHMEM64G options in the kernel configuration.
- */
-#define __PAGE_OFFSET		_AC(CONFIG_PAGE_OFFSET, UL)
-
-#ifdef CONFIG_4KSTACKS
-#define THREAD_ORDER	0
-#else
-#define THREAD_ORDER	1
-#endif
-#define THREAD_SIZE 	(PAGE_SIZE << THREAD_ORDER)
-
-#define STACKFAULT_STACK 0
-#define DOUBLEFAULT_STACK 1
-#define NMI_STACK 0
-#define DEBUG_STACK 0
-#define MCE_STACK 0
-#define N_EXCEPTION_STACKS 1
-
-#ifdef CONFIG_X86_PAE
-/* 44=32+12, the limit we can fit into an unsigned long pfn */
-#define __PHYSICAL_MASK_SHIFT	44
-#define __VIRTUAL_MASK_SHIFT	32
-#define PAGETABLE_LEVELS	3
-
-#ifndef __ASSEMBLY__
-typedef u64	pteval_t;
-typedef u64	pmdval_t;
-typedef u64	pudval_t;
-typedef u64	pgdval_t;
-typedef u64	pgprotval_t;
-
-typedef union {
-	struct {
-		unsigned long pte_low, pte_high;
-	};
-	pteval_t pte;
-} pte_t;
-#endif	/* __ASSEMBLY__
- */
-#else  /* !CONFIG_X86_PAE */
-#define __PHYSICAL_MASK_SHIFT	32
-#define __VIRTUAL_MASK_SHIFT	32
-#define PAGETABLE_LEVELS	2
-
-#ifndef __ASSEMBLY__
-typedef unsigned long	pteval_t;
-typedef unsigned long	pmdval_t;
-typedef unsigned long	pudval_t;
-typedef unsigned long	pgdval_t;
-typedef unsigned long	pgprotval_t;
-
-typedef union {
-	pteval_t pte;
-	pteval_t pte_low;
-} pte_t;
-
-#endif	/* __ASSEMBLY__ */
-#endif	/* CONFIG_X86_PAE */
-
-#ifndef __ASSEMBLY__
-typedef struct page *pgtable_t;
-#endif
+#include <asm/page_32_types.h>
 
 #ifdef CONFIG_HUGETLB_PAGE
 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 #endif
 
-#ifndef __ASSEMBLY__
 #define __phys_addr_nodebug(x)	((x) - PAGE_OFFSET)
 #ifdef CONFIG_DEBUG_VIRTUAL
 extern unsigned long __phys_addr(unsigned long);
@@ -89,22 +19,7 @@ extern unsigned long __phys_addr(unsigned long);
 #define pfn_valid(pfn)		((pfn) < max_mapnr)
 #endif /* CONFIG_FLATMEM */
 
-extern int nx_enabled;
-
-/*
- * This much address space is reserved for vmalloc() and iomap()
- * as well as fixmap mappings.
- */
-extern unsigned int __VMALLOC_RESERVE;
-extern int sysctl_legacy_va_layout;
-
-extern void find_low_pfn_range(void);
-extern unsigned long init_memory_mapping(unsigned long start,
-					 unsigned long end);
-extern void initmem_init(unsigned long, unsigned long);
-extern void free_initmem(void);
-extern void setup_bootmem_allocator(void);
-
+#ifndef __ASSEMBLY__
 
 #ifdef CONFIG_X86_USE_3DNOW
 #include <asm/mmx.h>

arch/x86/include/asm/page_32_types.h

+#ifndef _ASM_X86_PAGE_32_DEFS_H
+#define _ASM_X86_PAGE_32_DEFS_H
+
+#include <linux/const.h>
+
+/*
+ * This handles the memory map.
+ *
+ * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
+ * a virtual address space of one gigabyte, which limits the
+ * amount of physical memory you can use to about 950MB.
+ *
+ * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
+ * and CONFIG_HIGHMEM64G options in the kernel configuration.
+ */
+#define __PAGE_OFFSET		_AC(CONFIG_PAGE_OFFSET, UL)
+
+#ifdef CONFIG_4KSTACKS
+#define THREAD_ORDER	0
+#else
+#define THREAD_ORDER	1
+#endif
+#define THREAD_SIZE 	(PAGE_SIZE << THREAD_ORDER)
+
+#define STACKFAULT_STACK 0
+#define DOUBLEFAULT_STACK 1
+#define NMI_STACK 0
+#define DEBUG_STACK 0
+#define MCE_STACK 0
+#define N_EXCEPTION_STACKS 1
+
+#ifdef CONFIG_X86_PAE
+/* 44=32+12, the limit we can fit into an unsigned long pfn */
+#define __PHYSICAL_MASK_SHIFT	44
+#define __VIRTUAL_MASK_SHIFT	32
+#define PAGETABLE_LEVELS	3
+
+#else  /* !CONFIG_X86_PAE */
+#define __PHYSICAL_MASK_SHIFT	32
+#define __VIRTUAL_MASK_SHIFT	32
+#define PAGETABLE_LEVELS	2
+#endif	/* CONFIG_X86_PAE */
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_X86_PAE
+typedef u64	pteval_t;
+typedef u64	pmdval_t;
+typedef u64	pudval_t;
+typedef u64	pgdval_t;
+typedef u64	pgprotval_t;
+
+typedef union {
+	struct {
+		unsigned long pte_low, pte_high;
+	};
+	pteval_t pte;
+} pte_t;
+#else  /* !CONFIG_X86_PAE */
+typedef unsigned long	pteval_t;
+typedef unsigned long	pmdval_t;
+typedef unsigned long	pudval_t;
+typedef unsigned long	pgdval_t;
+typedef unsigned long	pgprotval_t;
+
+typedef union {
+	pteval_t pte;
+	pteval_t pte_low;
+} pte_t;
+#endif	/* CONFIG_X86_PAE */
+
+extern int nx_enabled;
+
+/*
+ * This much address space is reserved for vmalloc() and iomap()
+ * as well as fixmap mappings.
+ */
+extern unsigned int __VMALLOC_RESERVE;
+extern int sysctl_legacy_va_layout;
+
+extern void find_low_pfn_range(void);
+extern unsigned long init_memory_mapping(unsigned long start,
+					 unsigned long end);
+extern void initmem_init(unsigned long, unsigned long);
+extern void free_initmem(void);
+extern void setup_bootmem_allocator(void);
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif /* _ASM_X86_PAGE_32_DEFS_H */

arch/x86/include/asm/page_64.h

 #ifndef _ASM_X86_PAGE_64_H
 #define _ASM_X86_PAGE_64_H
 
-#define PAGETABLE_LEVELS	4
-
-#define THREAD_ORDER	1
-#define THREAD_SIZE  (PAGE_SIZE << THREAD_ORDER)
-#define CURRENT_MASK (~(THREAD_SIZE - 1))
-
-#define EXCEPTION_STACK_ORDER 0
-#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
-
-#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
-#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
-
-#define IRQ_STACK_ORDER 2
-#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)
-
-#define STACKFAULT_STACK 1
-#define DOUBLEFAULT_STACK 2
-#define NMI_STACK 3
-#define DEBUG_STACK 4
-#define MCE_STACK 5
-#define N_EXCEPTION_STACKS 5  /* hw limit: 7 */
-
-#define PUD_PAGE_SIZE		(_AC(1, UL) << PUD_SHIFT)
-#define PUD_PAGE_MASK		(~(PUD_PAGE_SIZE-1))
-
-/*
- * Set __PAGE_OFFSET to the most negative possible address +
- * PGDIR_SIZE*16 (pgd slot 272).  The gap is to allow a space for a
- * hypervisor to fit.  Choosing 16 slots here is arbitrary, but it's
- * what Xen requires.
- */
-#define __PAGE_OFFSET           _AC(0xffff880000000000, UL)
-
-#define __PHYSICAL_START	CONFIG_PHYSICAL_START
-#define __KERNEL_ALIGN		0x200000
-
-/*
- * Make sure kernel is aligned to 2MB address. Catching it at compile
- * time is better. Change your config file and compile the kernel
- * for a 2MB aligned address (CONFIG_PHYSICAL_START)
- */
-#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
-#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
-#endif
-
-#define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
-#define __START_KERNEL_map	_AC(0xffffffff80000000, UL)
-
-/* See Documentation/x86_64/mm.txt for a description of the memory map. */
-#define __PHYSICAL_MASK_SHIFT	46
-#define __VIRTUAL_MASK_SHIFT	48
-
-/*
- * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
- * arch/x86/kernel/head_64.S), and it is mapped here:
- */
-#define KERNEL_IMAGE_SIZE	(512 * 1024 * 1024)
-#define KERNEL_IMAGE_START	_AC(0xffffffff80000000, UL)
-
-#ifndef __ASSEMBLY__
-void clear_page(void *page);
-void copy_page(void *to, void *from);
-
-/* duplicated to the one in bootmem.h */
-extern unsigned long max_pfn;
-extern unsigned long phys_base;
-
-extern unsigned long __phys_addr(unsigned long);
-#define __phys_reloc_hide(x)	(x)
-
-/*
- * These are used to make use of C type-checking..
- */
-typedef unsigned long	pteval_t;
-typedef unsigned long	pmdval_t;
-typedef unsigned long	pudval_t;
-typedef unsigned long	pgdval_t;
-typedef unsigned long	pgprotval_t;
-
-typedef struct page *pgtable_t;
-
-typedef struct { pteval_t pte; } pte_t;
-
-#define vmemmap ((struct page *)VMEMMAP_START)
-
-extern unsigned long init_memory_mapping(unsigned long start,
-					 unsigned long end);
-
-extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
-extern void free_initmem(void);
-
-extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
-extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
-
-#endif	/* !__ASSEMBLY__ */
-
-#ifdef CONFIG_FLATMEM
-#define pfn_valid(pfn)          ((pfn) < max_pfn)
-#endif
-
+#include <asm/page_64_types.h>
 
 #endif /* _ASM_X86_PAGE_64_H */

arch/x86/include/asm/page_64.h.rej

+***************
+*** 1,105 ****
+  #ifndef _ASM_X86_PAGE_64_H
+  #define _ASM_X86_PAGE_64_H
+  
+- #define PAGETABLE_LEVELS	4
+- 
+- #define THREAD_ORDER	1
+- #define THREAD_SIZE  (PAGE_SIZE << THREAD_ORDER)
+- #define CURRENT_MASK (~(THREAD_SIZE - 1))
+- 
+- #define EXCEPTION_STACK_ORDER 0
+- #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
+- 
+- #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
+- #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
+- 
+- #define IRQSTACK_ORDER 2
+- #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
+- 
+- #define STACKFAULT_STACK 1
+- #define DOUBLEFAULT_STACK 2
+- #define NMI_STACK 3
+- #define DEBUG_STACK 4
+- #define MCE_STACK 5
+- #define N_EXCEPTION_STACKS 5  /* hw limit: 7 */
+- 
+- #define PUD_PAGE_SIZE		(_AC(1, UL) << PUD_SHIFT)
+- #define PUD_PAGE_MASK		(~(PUD_PAGE_SIZE-1))
+- 
+- /*
+-  * Set __PAGE_OFFSET to the most negative possible address +
+-  * PGDIR_SIZE*16 (pgd slot 272).  The gap is to allow a space for a
+-  * hypervisor to fit.  Choosing 16 slots here is arbitrary, but it's
+-  * what Xen requires.
+-  */
+- #define __PAGE_OFFSET           _AC(0xffff880000000000, UL)
+- 
+- #define __PHYSICAL_START	CONFIG_PHYSICAL_START
+- #define __KERNEL_ALIGN		0x200000
+- 
+- /*
+-  * Make sure kernel is aligned to 2MB address. Catching it at compile
+-  * time is better. Change your config file and compile the kernel
+-  * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+-  */
+- #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+- #error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+- #endif
+- 
+- #define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
+- #define __START_KERNEL_map	_AC(0xffffffff80000000, UL)
+- 
+- /* See Documentation/x86_64/mm.txt for a description of the memory map. */
+- #define __PHYSICAL_MASK_SHIFT	46
+- #define __VIRTUAL_MASK_SHIFT	48
+- 
+- /*
+-  * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
+-  * arch/x86/kernel/head_64.S), and it is mapped here:
+-  */
+- #define KERNEL_IMAGE_SIZE	(512 * 1024 * 1024)
+- #define KERNEL_IMAGE_START	_AC(0xffffffff80000000, UL)
+- 
+- #ifndef __ASSEMBLY__
+- void clear_page(void *page);
+- void copy_page(void *to, void *from);
+- 
+- /* duplicated to the one in bootmem.h */
+- extern unsigned long max_pfn;
+- extern unsigned long phys_base;
+- 
+- extern unsigned long __phys_addr(unsigned long);
+- #define __phys_reloc_hide(x)	(x)
+- 
+- /*
+-  * These are used to make use of C type-checking..
+-  */
+- typedef unsigned long	pteval_t;
+- typedef unsigned long	pmdval_t;
+- typedef unsigned long	pudval_t;
+- typedef unsigned long	pgdval_t;
+- typedef unsigned long	pgprotval_t;
+- 
+- typedef struct page *pgtable_t;
+- 
+- typedef struct { pteval_t pte; } pte_t;
+- 
+- #define vmemmap ((struct page *)VMEMMAP_START)
+- 
+- extern unsigned long init_memory_mapping(unsigned long start,
+- 					 unsigned long end);
+- 
+- extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
+- extern void free_initmem(void);
+- 
+- extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
+- extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
+- 
+- #endif	/* !__ASSEMBLY__ */
+- 
+- #ifdef CONFIG_FLATMEM
+- #define pfn_valid(pfn)          ((pfn) < max_pfn)
+- #endif
+- 
+  
+  #endif /* _ASM_X86_PAGE_64_H */
+--- 1,6 ----
+  #ifndef _ASM_X86_PAGE_64_H
+  #define _ASM_X86_PAGE_64_H
+  
++ #include <asm/page_64_types.h>
+  
+  #endif /* _ASM_X86_PAGE_64_H */

arch/x86/include/asm/page_64_types.h

+#ifndef _ASM_X86_PAGE_64_DEFS_H
+#define _ASM_X86_PAGE_64_DEFS_H
+
+#define PAGETABLE_LEVELS	4
+
+#define THREAD_ORDER	1
+#define THREAD_SIZE  (PAGE_SIZE << THREAD_ORDER)
+#define CURRENT_MASK (~(THREAD_SIZE - 1))
+
+#define EXCEPTION_STACK_ORDER 0
+#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
+
+#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
+#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
+
+#define IRQ_STACK_ORDER 2
+#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER)
+
+#define STACKFAULT_STACK 1
+#define DOUBLEFAULT_STACK 2
+#define NMI_STACK 3
+#define DEBUG_STACK 4
+#define MCE_STACK 5
+#define N_EXCEPTION_STACKS 5  /* hw limit: 7 */
+
+#define PUD_PAGE_SIZE		(_AC(1, UL) << PUD_SHIFT)
+#define PUD_PAGE_MASK		(~(PUD_PAGE_SIZE-1))
+
+/*
+ * Set __PAGE_OFFSET to the most negative possible address +
+ * PGDIR_SIZE*16 (pgd slot 272).  The gap is to allow a space for a
+ * hypervisor to fit.  Choosing 16 slots here is arbitrary, but it's
+ * what Xen requires.
+ */
+#define __PAGE_OFFSET           _AC(0xffff880000000000, UL)
+
+#define __PHYSICAL_START	CONFIG_PHYSICAL_START
+#define __KERNEL_ALIGN		0x200000
+
+/*
+ * Make sure kernel is aligned to 2MB address. Catching it at compile
+ * time is better. Change your config file and compile the kernel
+ * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+ */
+#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+#endif
+
+#define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
+#define __START_KERNEL_map	_AC(0xffffffff80000000, UL)
+
+/* See Documentation/x86_64/mm.txt for a description of the memory map. */
+#define __PHYSICAL_MASK_SHIFT	46
+#define __VIRTUAL_MASK_SHIFT	48
+
+/*
+ * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
+ * arch/x86/kernel/head_64.S), and it is mapped here:
+ */
+#define KERNEL_IMAGE_SIZE	(512 * 1024 * 1024)
+#define KERNEL_IMAGE_START	_AC(0xffffffff80000000, UL)
+
+#ifndef __ASSEMBLY__
+void clear_page(void *page);
+void copy_page(void *to, void *from);
+
+/* duplicated to the one in bootmem.h */
+extern unsigned long max_pfn;
+extern unsigned long phys_base;
+
+extern unsigned long __phys_addr(unsigned long);
+#define __phys_reloc_hide(x)	(x)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef unsigned long	pteval_t;
+typedef unsigned long	pmdval_t;
+typedef unsigned long	pudval_t;
+typedef unsigned long	pgdval_t;
+typedef unsigned long	pgprotval_t;
+
+typedef struct { pteval_t pte; } pte_t;
+
+#define vmemmap ((struct page *)VMEMMAP_START)
+
+extern unsigned long init_memory_mapping(unsigned long start,
+					 unsigned long end);
+
+extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
+extern void free_initmem(void);
+
+extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
+extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
+
+#endif	/* !__ASSEMBLY__ */
+
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn)          ((pfn) < max_pfn)
+#endif
+
+#endif /* _ASM_X86_PAGE_64_DEFS_H */

arch/x86/include/asm/page_types.h

+#ifndef _ASM_X86_PAGE_DEFS_H
+#define _ASM_X86_PAGE_DEFS_H
+
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT	12
+#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#define __PHYSICAL_MASK		((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1)
+#define __VIRTUAL_MASK		((1UL << __VIRTUAL_MASK_SHIFT) - 1)
+
+/* Cast PAGE_MASK to a signed type so that it is sign-extended if
+   virtual addresses are 32-bits but physical addresses are larger
+   (ie, 32-bit PAE). */
+#define PHYSICAL_PAGE_MASK	(((signed long)PAGE_MASK) & __PHYSICAL_MASK)
+
+/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
+#define PTE_PFN_MASK		((pteval_t)PHYSICAL_PAGE_MASK)
+
+/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
+#define PTE_FLAGS_MASK		(~PTE_PFN_MASK)
+
+#define PMD_PAGE_SIZE		(_AC(1, UL) << PMD_SHIFT)
+#define PMD_PAGE_MASK		(~(PMD_PAGE_SIZE-1))
+
+#define HPAGE_SHIFT		PMD_SHIFT
+#define HPAGE_SIZE		(_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
+
+#define HUGE_MAX_HSTATE 2
+
+#define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)
+
+#define VM_DATA_DEFAULT_FLAGS \
+	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#ifdef CONFIG_X86_64
+#include <asm/page_64_types.h>
+#else
+#include <asm/page_32_types.h>
+#endif	/* CONFIG_X86_64 */
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+typedef struct { pgdval_t pgd; } pgd_t;
+typedef struct { pgprotval_t pgprot; } pgprot_t;
+
+#if PAGETABLE_LEVELS > 3
+typedef struct { pudval_t pud; } pud_t;
+#endif
+
+#if PAGETABLE_LEVELS > 2
+typedef struct { pmdval_t pmd; } pmd_t;
+#endif
+
+typedef struct page *pgtable_t;
+
+extern int page_is_ram(unsigned long pagenr);
+extern int pagerange_is_ram(unsigned long start, unsigned long end);
+extern int devmem_is_allowed(unsigned long pagenr);
+extern void map_devmem(unsigned long pfn, unsigned long size,
+		       pgprot_t vma_prot);
+extern void unmap_devmem(unsigned long pfn, unsigned long size,
+			 pgprot_t vma_prot);
+
+extern unsigned long max_low_pfn_mapped;
+extern unsigned long max_pfn_mapped;
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif	/* _ASM_X86_PAGE_DEFS_H */