page.h File Reference

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/pfn.h>
#include <linux/mm.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <xen/interface/xen.h>
#include <xen/grant_table.h>
#include <xen/features.h>

Go to the source code of this file.

Data Structures
struct	xmaddr
struct	xpaddr

Macros
#define	XMADDR(x)   ((xmaddr_t) { .maddr = (x) })
#define	XPADDR(x)   ((xpaddr_t) { .paddr = (x) })
#define	INVALID_P2M_ENTRY   (~0UL)
#define	FOREIGN_FRAME_BIT   (1UL<<(BITS_PER_LONG-1))
#define	IDENTITY_FRAME_BIT   (1UL<<(BITS_PER_LONG-2))
#define	FOREIGN_FRAME(m)   ((m) | FOREIGN_FRAME_BIT)
#define	IDENTITY_FRAME(m)   ((m) | IDENTITY_FRAME_BIT)
#define	MAX_DOMAIN_PAGES   ((unsigned long)((u64)CONFIG_XEN_MAX_DOMAIN_MEMORY * 1024 * 1024 * 1024 / PAGE_SIZE))
#define	virt_to_machine(v)   (phys_to_machine(XPADDR(__pa(v))))
#define	virt_to_pfn(v)   (PFN_DOWN(__pa(v)))
#define	virt_to_mfn(v)   (pfn_to_mfn(virt_to_pfn(v)))
#define	mfn_to_virt(m)   (__va(mfn_to_pfn(m) << PAGE_SHIFT))
#define	pmd_val_ma(v)   ((v).pmd)
#define	pud_val_ma(v)   ((v).pud)
#define	__pmd_ma(x)   ((pmd_t) { (x) } )
#define	pgd_val_ma(x)   ((x).pgd)

Typedefs
typedef struct xmaddr	xmaddr_t
typedef struct xpaddr	xpaddr_t

Functions
unsigned long	get_phys_to_machine (unsigned long pfn)
bool	set_phys_to_machine (unsigned long pfn, unsigned long mfn)
bool __init	early_set_phys_to_machine (unsigned long pfn, unsigned long mfn)
bool	__set_phys_to_machine (unsigned long pfn, unsigned long mfn)
unsigned long	set_phys_range_identity (unsigned long pfn_s, unsigned long pfn_e)
int	m2p_add_override (unsigned long mfn, struct page *page, struct gnttab_map_grant_ref *kmap_op)
int	m2p_remove_override (struct page *page, struct gnttab_map_grant_ref *kmap_op)
struct page *	m2p_find_override (unsigned long mfn)
unsigned long	m2p_find_override_pfn (unsigned long mfn, unsigned long pfn)
void	xen_set_domain_pte (pte_t *ptep, pte_t pteval, unsigned domid)
xmaddr_t	arbitrary_virt_to_machine (void *address)
unsigned long	arbitrary_virt_to_mfn (void *vaddr)
void	make_lowmem_page_readonly (void *vaddr)
void	make_lowmem_page_readwrite (void *vaddr)

Variables
unsigned long *	machine_to_phys_mapping
unsigned long	machine_to_phys_nr

Macro Definition Documentation

#define __pmd_ma

(

x

)

((pmd_t) { (x) } )

Definition at line 204 of file page.h.

#define FOREIGN_FRAME

(

m

)

((m) | FOREIGN_FRAME_BIT)

Definition at line 35 of file page.h.

#define FOREIGN_FRAME_BIT   (1UL<<(BITS_PER_LONG-1))

Definition at line 33 of file page.h.

#define IDENTITY_FRAME

(

m

)

((m) | IDENTITY_FRAME_BIT)

Definition at line 36 of file page.h.

#define IDENTITY_FRAME_BIT   (1UL<<(BITS_PER_LONG-2))

Definition at line 34 of file page.h.

#define INVALID_P2M_ENTRY   (~0UL)

Definition at line 32 of file page.h.

#define MAX_DOMAIN_PAGES   ((unsigned long)((u64)CONFIG_XEN_MAX_DOMAIN_MEMORY * 1024 * 1024 * 1024 / PAGE_SIZE))

Definition at line 39 of file page.h.

#define mfn_to_virt

(

m

)

(__va(mfn_to_pfn(m) << PAGE_SHIFT))

Definition at line 171 of file page.h.

#define pgd_val_ma

(

x

)

((x).pgd)

Definition at line 206 of file page.h.

#define pmd_val_ma

(

v

)

((v).pmd)

Definition at line 198 of file page.h.

#define pud_val_ma

(

v

)

((v).pud)

Definition at line 202 of file page.h.

#define virt_to_machine

(

v

)

(phys_to_machine(XPADDR(__pa(v))))

Definition at line 168 of file page.h.

#define virt_to_mfn

(

v

)

(pfn_to_mfn(virt_to_pfn(v)))

Definition at line 170 of file page.h.

#define virt_to_pfn

(

v

)

(PFN_DOWN(__pa(v)))

Definition at line 169 of file page.h.

#define XMADDR

(

x

)

((xmaddr_t) { .maddr = (x) })

Definition at line 28 of file page.h.

#define XPADDR

(

x

)

((xpaddr_t) { .paddr = (x) })

Definition at line 29 of file page.h.

Typedef Documentation

typedef struct xmaddr xmaddr_t

typedef struct xpaddr xpaddr_t

Function Documentation

bool __set_phys_to_machine	(	unsigned long	pfn,
		unsigned long	mfn
	)

Definition at line 797 of file p2m.c.

xmaddr_t arbitrary_virt_to_machine

(

void *

address

)

Definition at line 133 of file mmu.c.

unsigned long arbitrary_virt_to_mfn

(

void *

vaddr

)

Definition at line 126 of file mmu.c.

bool __init early_set_phys_to_machine	(	unsigned long	pfn,
		unsigned long	mfn
	)

Definition at line 742 of file p2m.c.

unsigned long get_phys_to_machine

(

unsigned long

pfn

)

Definition at line 478 of file p2m.c.

int m2p_add_override	(	unsigned long	mfn,
		struct page *	page,
		struct gnttab_map_grant_ref *	kmap_op
	)

Definition at line 873 of file p2m.c.

struct page* m2p_find_override ( unsigned long  mfn )

read

Definition at line 1031 of file p2m.c.

unsigned long m2p_find_override_pfn	(	unsigned long	mfn,
		unsigned long	pfn
	)

Definition at line 1053 of file p2m.c.

int m2p_remove_override	(	struct page *	page,
		struct gnttab_map_grant_ref *	kmap_op
	)

Definition at line 935 of file p2m.c.

void make_lowmem_page_readonly

(

void *

vaddr

)

Definition at line 156 of file mmu.c.

void make_lowmem_page_readwrite

(

void *

vaddr

)

Definition at line 172 of file mmu.c.

unsigned long set_phys_range_identity	(	unsigned long	pfn_s,
		unsigned long	pfn_e
	)

Definition at line 760 of file p2m.c.

bool set_phys_to_machine	(	unsigned long	pfn,
		unsigned long	mfn
	)

Definition at line 837 of file p2m.c.

void xen_set_domain_pte	(	pte_t *	ptep,
		pte_t	pteval,
		unsigned	domid
	)

Definition at line 196 of file mmu.c.

Variable Documentation

unsigned long* machine_to_phys_mapping

Definition at line 92 of file enlighten.c.

unsigned long machine_to_phys_nr

Definition at line 94 of file enlighten.c.