[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / pgtable_types.h

#ifndef _ASM_X86_PGTABLE_DEFS_H
#define _ASM_X86_PGTABLE_DEFS_H

#include <linux/const.h>
#include <asm/page_types.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_HIDDEN	11	/* hidden by kmemcheck */
#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_SPLITTING	_PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */
#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_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 _PAGE_SPLITTING	(_AT(pteval_t, 1) << _PAGE_BIT_SPLITTING)
#define __HAVE_ARCH_PTE_SPECIAL

#ifdef CONFIG_KMEMCHECK
#define _PAGE_HIDDEN	(_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
#else
#define _PAGE_HIDDEN	(_AT(pteval_t, 0))
#endif

#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

#ifdef CONFIG_X86_32
# include "pgtable_32_types.h"
#else
# include "pgtable_64_types.h"
#endif

#ifndef __ASSEMBLY__

#include <linux/types.h>

/* 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)

typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;

typedef struct { pgdval_t pgd; } pgd_t;

static inline pgd_t native_make_pgd(pgdval_t val)
{
	return (pgd_t) { val };
}

static inline pgdval_t native_pgd_val(pgd_t pgd)
{
	return pgd.pgd;
}

static inline pgdval_t pgd_flags(pgd_t pgd)
{
	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
}

#if PAGETABLE_LEVELS > 3
typedef struct { pudval_t pud; } pud_t;

static inline pud_t native_make_pud(pmdval_t val)
{
	return (pud_t) { val };
}

static inline pudval_t native_pud_val(pud_t pud)
{
	return pud.pud;
}
#else
#include <asm-generic/pgtable-nopud.h>

static inline pudval_t native_pud_val(pud_t pud)
{
	return native_pgd_val(pud.pgd);
}
#endif

#if PAGETABLE_LEVELS > 2
typedef struct { pmdval_t pmd; } pmd_t;

static inline pmd_t native_make_pmd(pmdval_t val)
{
	return (pmd_t) { val };
}

static inline pmdval_t native_pmd_val(pmd_t pmd)
{
	return pmd.pmd;
}
#else
#include <asm-generic/pgtable-nopmd.h>

static inline pmdval_t native_pmd_val(pmd_t pmd)
{
	return native_pgd_val(pmd.pud.pgd);
}
#endif

static inline pudval_t pud_flags(pud_t pud)
{
	return native_pud_val(pud) & PTE_FLAGS_MASK;
}

static inline pmdval_t pmd_flags(pmd_t pmd)
{
	return native_pmd_val(pmd) & PTE_FLAGS_MASK;
}

static inline pte_t native_make_pte(pteval_t val)
{
	return (pte_t) { .pte = val };
}

static inline pteval_t native_pte_val(pte_t pte)
{
	return pte.pte;
}

static inline pteval_t pte_flags(pte_t pte)
{
	return native_pte_val(pte) & PTE_FLAGS_MASK;
}

#define pgprot_val(x)	((x).pgprot)
#define __pgprot(x)	((pgprot_t) { (x) } )


typedef struct page *pgtable_t;

extern pteval_t __supported_pte_mask;
extern void set_nx(void);
extern int nx_enabled;

#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
#define native_pagetable_setup_start x86_init_pgd_noop
#define native_pagetable_setup_done  x86_init_pgd_noop
#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 */
Commit	Line	Data
8d19c99f JF	1	#ifndef _ASM_X86_PGTABLE_DEFS_H
	2	#define _ASM_X86_PGTABLE_DEFS_H
	3
	4	#include <linux/const.h>
e43623b4	5	#include <asm/page_types.h>
8d19c99f JF	6
	7	#define FIRST_USER_ADDRESS 0
	8
	9	#define _PAGE_BIT_PRESENT 0 /* is present */
	10	#define _PAGE_BIT_RW 1 /* writeable */
	11	#define _PAGE_BIT_USER 2 /* userspace addressable */
	12	#define _PAGE_BIT_PWT 3 /* page write through */
	13	#define _PAGE_BIT_PCD 4 /* page cache disabled */
	14	#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
	15	#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
	16	#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
	17	#define _PAGE_BIT_PAT 7 /* on 4KB pages */
	18	#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
	19	#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
	20	#define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
dfec072e	21	#define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */
8d19c99f JF	22	#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
	23	#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
	24	#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
5f6e8da7	25	#define _PAGE_BIT_SPLITTING _PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */
8d19c99f JF	26	#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
	27
	28	/* If _PAGE_BIT_PRESENT is clear, we use these: */
	29	/* - if the user mapped it with PROT_NONE; pte_present gives true */
	30	#define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
	31	/* - set: nonlinear file mapping, saved PTE; unset:swap */
	32	#define _PAGE_BIT_FILE _PAGE_BIT_DIRTY
	33
	34	#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
	35	#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
	36	#define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
	37	#define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
	38	#define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
	39	#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
	40	#define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
	41	#define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
	42	#define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
	43	#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
	44	#define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
8d19c99f JF	45	#define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
	46	#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
	47	#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
	48	#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
5f6e8da7	49	#define _PAGE_SPLITTING (_AT(pteval_t, 1) << _PAGE_BIT_SPLITTING)
8d19c99f JF	50	#define __HAVE_ARCH_PTE_SPECIAL
8d19c99f JF	51
9d31c506 JF	52	#ifdef CONFIG_KMEMCHECK
	53	#define _PAGE_HIDDEN (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
	54	#else
	55	#define _PAGE_HIDDEN (_AT(pteval_t, 0))
	56	#endif
	57
8d19c99f JF	58	#if defined(CONFIG_X86_64) \|\| defined(CONFIG_X86_PAE)
	59	#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
	60	#else
	61	#define _PAGE_NX (_AT(pteval_t, 0))
	62	#endif
	63
	64	#define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
	65	#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
	66
	67	#define _PAGE_TABLE (_PAGE_PRESENT \| _PAGE_RW \| _PAGE_USER \| \
	68	_PAGE_ACCESSED \| _PAGE_DIRTY)
	69	#define _KERNPG_TABLE (_PAGE_PRESENT \| _PAGE_RW \| _PAGE_ACCESSED \| \
	70	_PAGE_DIRTY)
	71
	72	/* Set of bits not changed in pte_modify */
	73	#define _PAGE_CHG_MASK (PTE_PFN_MASK \| _PAGE_PCD \| _PAGE_PWT \| \
	74	_PAGE_SPECIAL \| _PAGE_ACCESSED \| _PAGE_DIRTY)
	75
	76	#define _PAGE_CACHE_MASK (_PAGE_PCD \| _PAGE_PWT)
	77	#define _PAGE_CACHE_WB (0)
	78	#define _PAGE_CACHE_WC (_PAGE_PWT)
	79	#define _PAGE_CACHE_UC_MINUS (_PAGE_PCD)
	80	#define _PAGE_CACHE_UC (_PAGE_PCD \| _PAGE_PWT)
	81
	82	#define PAGE_NONE __pgprot(_PAGE_PROTNONE \| _PAGE_ACCESSED)
	83	#define PAGE_SHARED __pgprot(_PAGE_PRESENT \| _PAGE_RW \| _PAGE_USER \| \
	84	_PAGE_ACCESSED \| _PAGE_NX)
	85
	86	#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_RW \| \
	87	_PAGE_USER \| _PAGE_ACCESSED)
	88	#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	89	_PAGE_ACCESSED \| _PAGE_NX)
	90	#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	91	_PAGE_ACCESSED)
	92	#define PAGE_COPY PAGE_COPY_NOEXEC
	93	#define PAGE_READONLY __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	94	_PAGE_ACCESSED \| _PAGE_NX)
	95	#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	96	_PAGE_ACCESSED)
	97
	98	#define __PAGE_KERNEL_EXEC \
	99	(_PAGE_PRESENT \| _PAGE_RW \| _PAGE_DIRTY \| _PAGE_ACCESSED \| _PAGE_GLOBAL)
	100	#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC \| _PAGE_NX)
	101
	102	#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
	103	#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
	104	#define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC \| _PAGE_PCD \| _PAGE_PWT)
	105	#define __PAGE_KERNEL_WC (__PAGE_KERNEL \| _PAGE_CACHE_WC)
	106	#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL \| _PAGE_PCD \| _PAGE_PWT)
	107	#define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL \| _PAGE_PCD)
	108	#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX \| _PAGE_USER)
	109	#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL \| _PAGE_PCD \| _PAGE_PWT)
	110	#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL \| _PAGE_PSE)
	111	#define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL \| _PAGE_CACHE_UC \| _PAGE_PSE)
	112	#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC \| _PAGE_PSE)
	113
	114	#define __PAGE_KERNEL_IO (__PAGE_KERNEL \| _PAGE_IOMAP)
	115	#define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE \| _PAGE_IOMAP)
	116	#define __PAGE_KERNEL_IO_UC_MINUS (__PAGE_KERNEL_UC_MINUS \| _PAGE_IOMAP)
	117	#define __PAGE_KERNEL_IO_WC (__PAGE_KERNEL_WC \| _PAGE_IOMAP)
	118
	119	#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
	120	#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
	121	#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
122	#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
123	#define PAGE_KERNEL_WC __pgprot(__PAGE_KERNEL_WC)
124	#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
125	#define PAGE_KERNEL_UC_MINUS __pgprot(__PAGE_KERNEL_UC_MINUS)
126	#define PAGE_KERNEL_EXEC_NOCACHE __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
127	#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
128	#define PAGE_KERNEL_LARGE_NOCACHE __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
129	#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
130	#define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL)
131	#define PAGE_KERNEL_VSYSCALL_NOCACHE __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
132
133	#define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO)
134	#define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE)
135	#define PAGE_KERNEL_IO_UC_MINUS __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
136	#define PAGE_KERNEL_IO_WC __pgprot(__PAGE_KERNEL_IO_WC)
137
138	/* xwr */
139	#define __P000 PAGE_NONE
140	#define __P001 PAGE_READONLY
141	#define __P010 PAGE_COPY
142	#define __P011 PAGE_COPY
143	#define __P100 PAGE_READONLY_EXEC
144	#define __P101 PAGE_READONLY_EXEC
145	#define __P110 PAGE_COPY_EXEC
146	#define __P111 PAGE_COPY_EXEC
147
148	#define __S000 PAGE_NONE
149	#define __S001 PAGE_READONLY
150	#define __S010 PAGE_SHARED
151	#define __S011 PAGE_SHARED
152	#define __S100 PAGE_READONLY_EXEC
153	#define __S101 PAGE_READONLY_EXEC
154	#define __S110 PAGE_SHARED_EXEC
155	#define __S111 PAGE_SHARED_EXEC
156
157	/*
158	* early identity mapping pte attrib macros.
159	*/
160	#ifdef CONFIG_X86_64
161	#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
162	#else
163	/*
164	* For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
165	* bits are combined, this will alow user to access the high address mapped
166	* VDSO in the presence of CONFIG_COMPAT_VDSO
167	*/
168	#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
169	#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */
170	#define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
171	#endif
172
54321d94 JF	173	#ifdef CONFIG_X86_32
	174	# include "pgtable_32_types.h"
	175	#else
	176	# include "pgtable_64_types.h"
	177	#endif
	178
8d19c99f JF	179	#ifndef __ASSEMBLY__
8d19c99f JF	180
54321d94 JF	181	#include <linux/types.h>
54321d94 JF	182
9b3651cb JF	183	/* PTE_PFN_MASK extracts the PFN from a (pte\|pmd\|pud\|pgd)val_t */
	184	#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
	185
	186	/* PTE_FLAGS_MASK extracts the flags from a (pte\|pmd\|pud\|pgd)val_t */
	187	#define PTE_FLAGS_MASK (~PTE_PFN_MASK)
	188
54321d94 JF	189	typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
	190
	191	typedef struct { pgdval_t pgd; } pgd_t;
	192
	193	static inline pgd_t native_make_pgd(pgdval_t val)
	194	{
	195	return (pgd_t) { val };
	196	}
	197
	198	static inline pgdval_t native_pgd_val(pgd_t pgd)
	199	{
	200	return pgd.pgd;
	201	}
	202
	203	static inline pgdval_t pgd_flags(pgd_t pgd)
	204	{
	205	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
	206	}
	207
	208	#if PAGETABLE_LEVELS > 3
	209	typedef struct { pudval_t pud; } pud_t;
	210
	211	static inline pud_t native_make_pud(pmdval_t val)
	212	{
	213	return (pud_t) { val };
	214	}
	215
	216	static inline pudval_t native_pud_val(pud_t pud)
	217	{
	218	return pud.pud;
	219	}
	220	#else
	221	#include <asm-generic/pgtable-nopud.h>
	222
	223	static inline pudval_t native_pud_val(pud_t pud)
	224	{
	225	return native_pgd_val(pud.pgd);
	226	}
	227	#endif
	228
	229	#if PAGETABLE_LEVELS > 2
	230	typedef struct { pmdval_t pmd; } pmd_t;
	231
	232	static inline pmd_t native_make_pmd(pmdval_t val)
	233	{
	234	return (pmd_t) { val };
	235	}
	236
	237	static inline pmdval_t native_pmd_val(pmd_t pmd)
	238	{
	239	return pmd.pmd;
	240	}
	241	#else
	242	#include <asm-generic/pgtable-nopmd.h>
	243
	244	static inline pmdval_t native_pmd_val(pmd_t pmd)
	245	{
	246	return native_pgd_val(pmd.pud.pgd);
	247	}
	248	#endif
	249
	250	static inline pudval_t pud_flags(pud_t pud)
	251	{
	252	return native_pud_val(pud) & PTE_FLAGS_MASK;
253	}
254
255	static inline pmdval_t pmd_flags(pmd_t pmd)
256	{
257	return native_pmd_val(pmd) & PTE_FLAGS_MASK;
258	}
259
260	static inline pte_t native_make_pte(pteval_t val)
261	{
262	return (pte_t) { .pte = val };
263	}
264
265	static inline pteval_t native_pte_val(pte_t pte)
266	{
267	return pte.pte;
268	}
269
270	static inline pteval_t pte_flags(pte_t pte)
271	{
272	return native_pte_val(pte) & PTE_FLAGS_MASK;
273	}
274
275	#define pgprot_val(x) ((x).pgprot)
276	#define __pgprot(x) ((pgprot_t) { (x) } )
277
278
279	typedef struct page *pgtable_t;
280
8d19c99f	281	extern pteval_t __supported_pte_mask;
c44c9ec0	282	extern void set_nx(void);
54321d94	283	extern int nx_enabled;
8d19c99f JF	284
	285	#define pgprot_writecombine pgprot_writecombine
	286	extern pgprot_t pgprot_writecombine(pgprot_t prot);
	287
	288	/* Indicate that x86 has its own track and untrack pfn vma functions */
	289	#define __HAVE_PFNMAP_TRACKING
	290
	291	#define __HAVE_PHYS_MEM_ACCESS_PROT
	292	struct file;
	293	pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
	294	unsigned long size, pgprot_t vma_prot);
	295	int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
	296	unsigned long size, pgprot_t *vma_prot);
	297
	298	/* Install a pte for a particular vaddr in kernel space. */
	299	void set_pte_vaddr(unsigned long vaddr, pte_t pte);
	300
	301	#ifdef CONFIG_X86_32
	302	extern void native_pagetable_setup_start(pgd_t *base);
	303	extern void native_pagetable_setup_done(pgd_t *base);
	304	#else
030cb6c0 TG	305	#define native_pagetable_setup_start x86_init_pgd_noop
030cb6c0 TG	306	#define native_pagetable_setup_done x86_init_pgd_noop
8d19c99f JF	307	#endif
	308
	309	struct seq_file;
	310	extern void arch_report_meminfo(struct seq_file *m);
	311
	312	enum {
	313	PG_LEVEL_NONE,
	314	PG_LEVEL_4K,
	315	PG_LEVEL_2M,
	316	PG_LEVEL_1G,
	317	PG_LEVEL_NUM
	318	};
	319
	320	#ifdef CONFIG_PROC_FS
	321	extern void update_page_count(int level, unsigned long pages);
	322	#else
	323	static inline void update_page_count(int level, unsigned long pages) { }
	324	#endif
	325
	326	/*
	327	* Helper function that returns the kernel pagetable entry controlling
	328	* the virtual address 'address'. NULL means no pagetable entry present.
	329	* NOTE: the return type is pte_t but if the pmd is PSE then we return it
	330	* as a pte too.
	331	*/
	332	extern pte_t lookup_address(unsigned long address, unsigned int level);
	333
	334	#endif /* !__ASSEMBLY__ */
	335
	336	#endif /* _ASM_X86_PGTABLE_DEFS_H */