Split pgtable.h into pgtable_types.h and pgtable.h
authorJeremy Fitzhardinge <jeremy@goop.org>
Mon, 9 Feb 2009 02:46:18 +0000 (18:46 -0800)
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Wed, 11 Feb 2009 22:54:09 +0000 (14:54 -0800)
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
arch/x86/include/asm/pgtable.h
arch/x86/include/asm/pgtable_types.h [new file with mode: 0644]

index 860f1b635c40b9bcea3661ce1ba7b1465a420648..10404e7bf32d560af7b227fea1e880a7000ab08f 100644 (file)
@@ -3,164 +3,7 @@
 
 #include <asm/page.h>
 
-#define FIRST_USER_ADDRESS     0
-
-#define _PAGE_BIT_PRESENT      0       /* is present */
-#define _PAGE_BIT_RW           1       /* writeable */
-#define _PAGE_BIT_USER         2       /* userspace addressable */
-#define _PAGE_BIT_PWT          3       /* page write through */
-#define _PAGE_BIT_PCD          4       /* page cache disabled */
-#define _PAGE_BIT_ACCESSED     5       /* was accessed (raised by CPU) */
-#define _PAGE_BIT_DIRTY                6       /* was written to (raised by CPU) */
-#define _PAGE_BIT_PSE          7       /* 4 MB (or 2MB) page */
-#define _PAGE_BIT_PAT          7       /* on 4KB pages */
-#define _PAGE_BIT_GLOBAL       8       /* Global TLB entry PPro+ */
-#define _PAGE_BIT_UNUSED1      9       /* available for programmer */
-#define _PAGE_BIT_IOMAP                10      /* flag used to indicate IO mapping */
-#define _PAGE_BIT_UNUSED3      11
-#define _PAGE_BIT_PAT_LARGE    12      /* On 2MB or 1GB pages */
-#define _PAGE_BIT_SPECIAL      _PAGE_BIT_UNUSED1
-#define _PAGE_BIT_CPA_TEST     _PAGE_BIT_UNUSED1
-#define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */
-
-/* If _PAGE_BIT_PRESENT is clear, we use these: */
-/* - if the user mapped it with PROT_NONE; pte_present gives true */
-#define _PAGE_BIT_PROTNONE     _PAGE_BIT_GLOBAL
-/* - set: nonlinear file mapping, saved PTE; unset:swap */
-#define _PAGE_BIT_FILE         _PAGE_BIT_DIRTY
-
-#define _PAGE_PRESENT  (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
-#define _PAGE_RW       (_AT(pteval_t, 1) << _PAGE_BIT_RW)
-#define _PAGE_USER     (_AT(pteval_t, 1) << _PAGE_BIT_USER)
-#define _PAGE_PWT      (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
-#define _PAGE_PCD      (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
-#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
-#define _PAGE_DIRTY    (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
-#define _PAGE_PSE      (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
-#define _PAGE_GLOBAL   (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
-#define _PAGE_UNUSED1  (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
-#define _PAGE_IOMAP    (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
-#define _PAGE_UNUSED3  (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3)
-#define _PAGE_PAT      (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
-#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
-#define _PAGE_SPECIAL  (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
-#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
-#define __HAVE_ARCH_PTE_SPECIAL
-
-#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
-#define _PAGE_NX       (_AT(pteval_t, 1) << _PAGE_BIT_NX)
-#else
-#define _PAGE_NX       (_AT(pteval_t, 0))
-#endif
-
-#define _PAGE_FILE     (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
-#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
-
-#define _PAGE_TABLE    (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |        \
-                        _PAGE_ACCESSED | _PAGE_DIRTY)
-#define _KERNPG_TABLE  (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |    \
-                        _PAGE_DIRTY)
-
-/* Set of bits not changed in pte_modify */
-#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT |         \
-                        _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-#define _PAGE_CACHE_MASK       (_PAGE_PCD | _PAGE_PWT)
-#define _PAGE_CACHE_WB         (0)
-#define _PAGE_CACHE_WC         (_PAGE_PWT)
-#define _PAGE_CACHE_UC_MINUS   (_PAGE_PCD)
-#define _PAGE_CACHE_UC         (_PAGE_PCD | _PAGE_PWT)
-
-#define PAGE_NONE      __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED    __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
-                                _PAGE_ACCESSED | _PAGE_NX)
-
-#define PAGE_SHARED_EXEC       __pgprot(_PAGE_PRESENT | _PAGE_RW |     \
-                                        _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_COPY_NOEXEC       __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
-                                        _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_COPY_EXEC         __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
-                                        _PAGE_ACCESSED)
-#define PAGE_COPY              PAGE_COPY_NOEXEC
-#define PAGE_READONLY          __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
-                                        _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_READONLY_EXEC     __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
-                                        _PAGE_ACCESSED)
-
-#define __PAGE_KERNEL_EXEC                                             \
-       (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
-#define __PAGE_KERNEL          (__PAGE_KERNEL_EXEC | _PAGE_NX)
-
-#define __PAGE_KERNEL_RO               (__PAGE_KERNEL & ~_PAGE_RW)
-#define __PAGE_KERNEL_RX               (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
-#define __PAGE_KERNEL_EXEC_NOCACHE     (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
-#define __PAGE_KERNEL_WC               (__PAGE_KERNEL | _PAGE_CACHE_WC)
-#define __PAGE_KERNEL_NOCACHE          (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
-#define __PAGE_KERNEL_UC_MINUS         (__PAGE_KERNEL | _PAGE_PCD)
-#define __PAGE_KERNEL_VSYSCALL         (__PAGE_KERNEL_RX | _PAGE_USER)
-#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
-#define __PAGE_KERNEL_LARGE            (__PAGE_KERNEL | _PAGE_PSE)
-#define __PAGE_KERNEL_LARGE_NOCACHE    (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
-#define __PAGE_KERNEL_LARGE_EXEC       (__PAGE_KERNEL_EXEC | _PAGE_PSE)
-
-#define __PAGE_KERNEL_IO               (__PAGE_KERNEL | _PAGE_IOMAP)
-#define __PAGE_KERNEL_IO_NOCACHE       (__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
-#define __PAGE_KERNEL_IO_UC_MINUS      (__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
-#define __PAGE_KERNEL_IO_WC            (__PAGE_KERNEL_WC | _PAGE_IOMAP)
-
-#define PAGE_KERNEL                    __pgprot(__PAGE_KERNEL)
-#define PAGE_KERNEL_RO                 __pgprot(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_EXEC               __pgprot(__PAGE_KERNEL_EXEC)
-#define PAGE_KERNEL_RX                 __pgprot(__PAGE_KERNEL_RX)
-#define PAGE_KERNEL_WC                 __pgprot(__PAGE_KERNEL_WC)
-#define PAGE_KERNEL_NOCACHE            __pgprot(__PAGE_KERNEL_NOCACHE)
-#define PAGE_KERNEL_UC_MINUS           __pgprot(__PAGE_KERNEL_UC_MINUS)
-#define PAGE_KERNEL_EXEC_NOCACHE       __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
-#define PAGE_KERNEL_LARGE              __pgprot(__PAGE_KERNEL_LARGE)
-#define PAGE_KERNEL_LARGE_NOCACHE      __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
-#define PAGE_KERNEL_LARGE_EXEC         __pgprot(__PAGE_KERNEL_LARGE_EXEC)
-#define PAGE_KERNEL_VSYSCALL           __pgprot(__PAGE_KERNEL_VSYSCALL)
-#define PAGE_KERNEL_VSYSCALL_NOCACHE   __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
-
-#define PAGE_KERNEL_IO                 __pgprot(__PAGE_KERNEL_IO)
-#define PAGE_KERNEL_IO_NOCACHE         __pgprot(__PAGE_KERNEL_IO_NOCACHE)
-#define PAGE_KERNEL_IO_UC_MINUS                __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
-#define PAGE_KERNEL_IO_WC              __pgprot(__PAGE_KERNEL_IO_WC)
-
-/*         xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
-/*
- * early identity mapping  pte attrib macros.
- */
-#ifdef CONFIG_X86_64
-#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
-#else
-/*
- * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
- * bits are combined, this will alow user to access the high address mapped
- * VDSO in the presence of CONFIG_COMPAT_VDSO
- */
-#define PTE_IDENT_ATTR  0x003          /* PRESENT+RW */
-#define PDE_IDENT_ATTR  0x067          /* PRESENT+RW+USER+DIRTY+ACCESSED */
-#define PGD_IDENT_ATTR  0x001          /* PRESENT (no other attributes) */
-#endif
+#include <asm/pgtable_types.h>
 
 /*
  * Macro to mark a page protection value as UC-
 
 #ifndef __ASSEMBLY__
 
-#define pgprot_writecombine    pgprot_writecombine
-extern pgprot_t pgprot_writecombine(pgprot_t prot);
-
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..
@@ -316,8 +156,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
        return pte_set_flags(pte, _PAGE_SPECIAL);
 }
 
-extern pteval_t __supported_pte_mask;
-
 static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
 {
        return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) |
@@ -376,32 +214,6 @@ static inline int is_new_memtype_allowed(unsigned long flags,
        return 1;
 }
 
-#ifndef __ASSEMBLY__
-/* Indicate that x86 has its own track and untrack pfn vma functions */
-#define __HAVE_PFNMAP_TRACKING
-
-#define __HAVE_PHYS_MEM_ACCESS_PROT
-struct file;
-pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
-                              unsigned long size, pgprot_t vma_prot);
-int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
-                              unsigned long size, pgprot_t *vma_prot);
-#endif
-
-/* Install a pte for a particular vaddr in kernel space. */
-void set_pte_vaddr(unsigned long vaddr, pte_t pte);
-
-#ifdef CONFIG_X86_32
-extern void native_pagetable_setup_start(pgd_t *base);
-extern void native_pagetable_setup_done(pgd_t *base);
-#else
-static inline void native_pagetable_setup_start(pgd_t *base) {}
-static inline void native_pagetable_setup_done(pgd_t *base) {}
-#endif
-
-struct seq_file;
-extern void arch_report_meminfo(struct seq_file *m);
-
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
 #else  /* !CONFIG_PARAVIRT */
@@ -662,28 +474,6 @@ static inline int pgd_none(pgd_t pgd)
 
 #ifndef __ASSEMBLY__
 
-enum {
-       PG_LEVEL_NONE,
-       PG_LEVEL_4K,
-       PG_LEVEL_2M,
-       PG_LEVEL_1G,
-       PG_LEVEL_NUM
-};
-
-#ifdef CONFIG_PROC_FS
-extern void update_page_count(int level, unsigned long pages);
-#else
-static inline void update_page_count(int level, unsigned long pages) { }
-#endif
-
-/*
- * Helper function that returns the kernel pagetable entry controlling
- * the virtual address 'address'. NULL means no pagetable entry present.
- * NOTE: the return type is pte_t but if the pmd is PSE then we return it
- * as a pte too.
- */
-extern pte_t *lookup_address(unsigned long address, unsigned int *level);
-
 /* local pte updates need not use xchg for locking */
 static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
 {
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
new file mode 100644 (file)
index 0000000..f80f5a6
--- /dev/null
@@ -0,0 +1,220 @@
+#ifndef _ASM_X86_PGTABLE_DEFS_H
+#define _ASM_X86_PGTABLE_DEFS_H
+
+#include <linux/const.h>
+
+#define FIRST_USER_ADDRESS     0
+
+#define _PAGE_BIT_PRESENT      0       /* is present */
+#define _PAGE_BIT_RW           1       /* writeable */
+#define _PAGE_BIT_USER         2       /* userspace addressable */
+#define _PAGE_BIT_PWT          3       /* page write through */
+#define _PAGE_BIT_PCD          4       /* page cache disabled */
+#define _PAGE_BIT_ACCESSED     5       /* was accessed (raised by CPU) */
+#define _PAGE_BIT_DIRTY                6       /* was written to (raised by CPU) */
+#define _PAGE_BIT_PSE          7       /* 4 MB (or 2MB) page */
+#define _PAGE_BIT_PAT          7       /* on 4KB pages */
+#define _PAGE_BIT_GLOBAL       8       /* Global TLB entry PPro+ */
+#define _PAGE_BIT_UNUSED1      9       /* available for programmer */
+#define _PAGE_BIT_IOMAP                10      /* flag used to indicate IO mapping */
+#define _PAGE_BIT_UNUSED3      11
+#define _PAGE_BIT_PAT_LARGE    12      /* On 2MB or 1GB pages */
+#define _PAGE_BIT_SPECIAL      _PAGE_BIT_UNUSED1
+#define _PAGE_BIT_CPA_TEST     _PAGE_BIT_UNUSED1
+#define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */
+
+/* If _PAGE_BIT_PRESENT is clear, we use these: */
+/* - if the user mapped it with PROT_NONE; pte_present gives true */
+#define _PAGE_BIT_PROTNONE     _PAGE_BIT_GLOBAL
+/* - set: nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_BIT_FILE         _PAGE_BIT_DIRTY
+
+#define _PAGE_PRESENT  (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
+#define _PAGE_RW       (_AT(pteval_t, 1) << _PAGE_BIT_RW)
+#define _PAGE_USER     (_AT(pteval_t, 1) << _PAGE_BIT_USER)
+#define _PAGE_PWT      (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
+#define _PAGE_PCD      (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
+#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
+#define _PAGE_DIRTY    (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
+#define _PAGE_PSE      (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
+#define _PAGE_GLOBAL   (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
+#define _PAGE_UNUSED1  (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
+#define _PAGE_IOMAP    (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
+#define _PAGE_UNUSED3  (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3)
+#define _PAGE_PAT      (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
+#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
+#define _PAGE_SPECIAL  (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
+#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
+#define __HAVE_ARCH_PTE_SPECIAL
+
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
+#define _PAGE_NX       (_AT(pteval_t, 1) << _PAGE_BIT_NX)
+#else
+#define _PAGE_NX       (_AT(pteval_t, 0))
+#endif
+
+#define _PAGE_FILE     (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
+#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
+
+#define _PAGE_TABLE    (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |        \
+                        _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _KERNPG_TABLE  (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |    \
+                        _PAGE_DIRTY)
+
+/* Set of bits not changed in pte_modify */
+#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT |         \
+                        _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)
+
+#define _PAGE_CACHE_MASK       (_PAGE_PCD | _PAGE_PWT)
+#define _PAGE_CACHE_WB         (0)
+#define _PAGE_CACHE_WC         (_PAGE_PWT)
+#define _PAGE_CACHE_UC_MINUS   (_PAGE_PCD)
+#define _PAGE_CACHE_UC         (_PAGE_PCD | _PAGE_PWT)
+
+#define PAGE_NONE      __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
+#define PAGE_SHARED    __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
+                                _PAGE_ACCESSED | _PAGE_NX)
+
+#define PAGE_SHARED_EXEC       __pgprot(_PAGE_PRESENT | _PAGE_RW |     \
+                                        _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_COPY_NOEXEC       __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
+                                        _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_COPY_EXEC         __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
+                                        _PAGE_ACCESSED)
+#define PAGE_COPY              PAGE_COPY_NOEXEC
+#define PAGE_READONLY          __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
+                                        _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_READONLY_EXEC     __pgprot(_PAGE_PRESENT | _PAGE_USER |   \
+                                        _PAGE_ACCESSED)
+
+#define __PAGE_KERNEL_EXEC                                             \
+       (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
+#define __PAGE_KERNEL          (__PAGE_KERNEL_EXEC | _PAGE_NX)
+
+#define __PAGE_KERNEL_RO               (__PAGE_KERNEL & ~_PAGE_RW)
+#define __PAGE_KERNEL_RX               (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
+#define __PAGE_KERNEL_EXEC_NOCACHE     (__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
+#define __PAGE_KERNEL_WC               (__PAGE_KERNEL | _PAGE_CACHE_WC)
+#define __PAGE_KERNEL_NOCACHE          (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
+#define __PAGE_KERNEL_UC_MINUS         (__PAGE_KERNEL | _PAGE_PCD)
+#define __PAGE_KERNEL_VSYSCALL         (__PAGE_KERNEL_RX | _PAGE_USER)
+#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
+#define __PAGE_KERNEL_LARGE            (__PAGE_KERNEL | _PAGE_PSE)
+#define __PAGE_KERNEL_LARGE_NOCACHE    (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
+#define __PAGE_KERNEL_LARGE_EXEC       (__PAGE_KERNEL_EXEC | _PAGE_PSE)
+
+#define __PAGE_KERNEL_IO               (__PAGE_KERNEL | _PAGE_IOMAP)
+#define __PAGE_KERNEL_IO_NOCACHE       (__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
+#define __PAGE_KERNEL_IO_UC_MINUS      (__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
+#define __PAGE_KERNEL_IO_WC            (__PAGE_KERNEL_WC | _PAGE_IOMAP)
+
+#define PAGE_KERNEL                    __pgprot(__PAGE_KERNEL)
+#define PAGE_KERNEL_RO                 __pgprot(__PAGE_KERNEL_RO)
+#define PAGE_KERNEL_EXEC               __pgprot(__PAGE_KERNEL_EXEC)
+#define PAGE_KERNEL_RX                 __pgprot(__PAGE_KERNEL_RX)
+#define PAGE_KERNEL_WC                 __pgprot(__PAGE_KERNEL_WC)
+#define PAGE_KERNEL_NOCACHE            __pgprot(__PAGE_KERNEL_NOCACHE)
+#define PAGE_KERNEL_UC_MINUS           __pgprot(__PAGE_KERNEL_UC_MINUS)
+#define PAGE_KERNEL_EXEC_NOCACHE       __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
+#define PAGE_KERNEL_LARGE              __pgprot(__PAGE_KERNEL_LARGE)
+#define PAGE_KERNEL_LARGE_NOCACHE      __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
+#define PAGE_KERNEL_LARGE_EXEC         __pgprot(__PAGE_KERNEL_LARGE_EXEC)
+#define PAGE_KERNEL_VSYSCALL           __pgprot(__PAGE_KERNEL_VSYSCALL)
+#define PAGE_KERNEL_VSYSCALL_NOCACHE   __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
+
+#define PAGE_KERNEL_IO                 __pgprot(__PAGE_KERNEL_IO)
+#define PAGE_KERNEL_IO_NOCACHE         __pgprot(__PAGE_KERNEL_IO_NOCACHE)
+#define PAGE_KERNEL_IO_UC_MINUS                __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
+#define PAGE_KERNEL_IO_WC              __pgprot(__PAGE_KERNEL_IO_WC)
+
+/*         xwr */
+#define __P000 PAGE_NONE
+#define __P001 PAGE_READONLY
+#define __P010 PAGE_COPY
+#define __P011 PAGE_COPY
+#define __P100 PAGE_READONLY_EXEC
+#define __P101 PAGE_READONLY_EXEC
+#define __P110 PAGE_COPY_EXEC
+#define __P111 PAGE_COPY_EXEC
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_READONLY
+#define __S010 PAGE_SHARED
+#define __S011 PAGE_SHARED
+#define __S100 PAGE_READONLY_EXEC
+#define __S101 PAGE_READONLY_EXEC
+#define __S110 PAGE_SHARED_EXEC
+#define __S111 PAGE_SHARED_EXEC
+
+/*
+ * early identity mapping  pte attrib macros.
+ */
+#ifdef CONFIG_X86_64
+#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
+#else
+/*
+ * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
+ * bits are combined, this will alow user to access the high address mapped
+ * VDSO in the presence of CONFIG_COMPAT_VDSO
+ */
+#define PTE_IDENT_ATTR  0x003          /* PRESENT+RW */
+#define PDE_IDENT_ATTR  0x067          /* PRESENT+RW+USER+DIRTY+ACCESSED */
+#define PGD_IDENT_ATTR  0x001          /* PRESENT (no other attributes) */
+#endif
+
+#ifndef __ASSEMBLY__
+
+extern pteval_t __supported_pte_mask;
+
+#define pgprot_writecombine    pgprot_writecombine
+extern pgprot_t pgprot_writecombine(pgprot_t prot);
+
+/* Indicate that x86 has its own track and untrack pfn vma functions */
+#define __HAVE_PFNMAP_TRACKING
+
+#define __HAVE_PHYS_MEM_ACCESS_PROT
+struct file;
+pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
+                              unsigned long size, pgprot_t vma_prot);
+int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
+                              unsigned long size, pgprot_t *vma_prot);
+
+/* Install a pte for a particular vaddr in kernel space. */
+void set_pte_vaddr(unsigned long vaddr, pte_t pte);
+
+#ifdef CONFIG_X86_32
+extern void native_pagetable_setup_start(pgd_t *base);
+extern void native_pagetable_setup_done(pgd_t *base);
+#else
+static inline void native_pagetable_setup_start(pgd_t *base) {}
+static inline void native_pagetable_setup_done(pgd_t *base) {}
+#endif
+
+struct seq_file;
+extern void arch_report_meminfo(struct seq_file *m);
+
+enum {
+       PG_LEVEL_NONE,
+       PG_LEVEL_4K,
+       PG_LEVEL_2M,
+       PG_LEVEL_1G,
+       PG_LEVEL_NUM
+};
+
+#ifdef CONFIG_PROC_FS
+extern void update_page_count(int level, unsigned long pages);
+#else
+static inline void update_page_count(int level, unsigned long pages) { }
+#endif
+
+/*
+ * Helper function that returns the kernel pagetable entry controlling
+ * the virtual address 'address'. NULL means no pagetable entry present.
+ * NOTE: the return type is pte_t but if the pmd is PSE then we return it
+ * as a pte too.
+ */
+extern pte_t *lookup_address(unsigned long address, unsigned int *level);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_X86_PGTABLE_DEFS_H */