Commit 8d19c99f authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Jeremy Fitzhardinge
Browse files

Split pgtable.h into pgtable_types.h and pgtable.h 



Signed-off-by: default avatarJeremy Fitzhardinge <jeremy@goop.org>
parent b924a281

arch/x86/include/asm/pgtable.h

+1 −211
Original line number Diff line number Diff line
@@ -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-
@@ -172,9 +15,6 @@ 


#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)

{

arch/x86/include/asm/pgtable_types.h

0 → 100644
+220 −0
Original line number Diff line number Diff line 
#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 */