vregion.c File Reference

vregion management More...

Functions
errval_t	vregion_map_aligned (struct vregion *vregion, struct vspace *vspace, struct memobj *memobj, size_t offset, size_t size, vregion_flags_t flags, size_t alignment)
	Setup a new vregion with alignment constraints in an address space. More...
errval_t	vregion_map (struct vregion *vregion, struct vspace *vspace, struct memobj *memobj, size_t offset, size_t size, vregion_flags_t flags)
	Setup a new vregion anywhere in the address space. More...
errval_t	vregion_map_fixed (struct vregion *vregion, struct vspace *vspace, struct memobj *memobj, size_t offset, size_t size, genvaddr_t addr, vregion_flags_t flags)
	Setup a new vregion at a specified location. More...
errval_t	vregion_destroy (struct vregion *vregion)
	Destroy the given region. More...
errval_t	vregion_pagefault_handler (struct vregion *vregion, genvaddr_t addr, vm_fault_type_t type)
	Page fault handler. More...

Detailed Description

vregion management

A vregion is backed by a memory object and a vspace. A vregion manages a range of virtual address space.

Function Documentation

errval_t vregion_destroy

(

struct vregion *

vregion

)

Destroy the given region.

Returns

SYS_ERR_OK on success, error code on failure

errval_t vregion_map	(	struct vregion *	vregion,
		struct vspace *	vspace,
		struct memobj *	memobj,
		size_t	offset,
		size_t	size,
		vregion_flags_t	flags
	)

Setup a new vregion anywhere in the address space.

Parameters

vregion	The vregion
vspace	The vspace to associate with the vregion
memobj	The memory object to associate with the region
offset	Offset into the memory object
size	Size of the memory object to use
flags	Vregion specific flags

errval_t vregion_map_aligned	(	struct vregion *	vregion,
		struct vspace *	vspace,
		struct memobj *	memobj,
		size_t	offset,
		size_t	size,
		vregion_flags_t	flags,
		size_t	alignment
	)

Setup a new vregion with alignment constraints in an address space.

Parameters

vregion	The vregion
vspace	The vspace to associate with the vregion
memobj	The memory object to associate with the region
offset	Offset into the memory object
size	Size of the memoryg object to use
flags	Vregion specific flags
alignment	Minimum required alignment of mapping (may be increased)

errval_t vregion_map_fixed	(	struct vregion *	vregion,
		struct vspace *	vspace,
		struct memobj *	memobj,
		size_t	offset,
		size_t	size,
		genvaddr_t	addr,
		vregion_flags_t	flags
	)

Setup a new vregion at a specified location.

Parameters

vregion	The region
vspace	The vspace to associate with the region
memobj	The memory object to associate with the region
offset	Offset into the memory object
size	Size of the memory object to use
addr	Address to create the vregion for
flags	Vregion specific flags

errval_t vregion_pagefault_handler	(	struct vregion *	vregion,
		genvaddr_t	addr,
		vm_fault_type_t	type
	)

Page fault handler.

Parameters

vregion	The vregion the fault occured in
addr	The faulting address
type	The fault type

Look up the appropriate memory object and forward the fault to it