A mapping (map entry): a range of an address space, its permissions, and where its pages come from. More...

#include <vm.h>

Data Fields
paddr_t	paddr
	physical memory to map all at once (vm_map()), or 0 for pages that come in on page faults
vaddr_t	base
	where the mapping starts in its address space
size_t	size
	its size
uint32_t	flags
	its permissions and flags (VM_*)
struct vm_anon *	vm_anon
	its anon: the pages the process wrote to
struct vm_object *	vm_object
	its object: what its other pages come from (a file)
size_t	off
	where the mapping starts in its object
struct qnode *	qnode
	its node in its address space's list of mappings

Detailed Description

A mapping (map entry): a range of an address space, its permissions, and where its pages come from.

Definition at line 66 of file vm.h.

Field Documentation

◆ base

vaddr_t vm_entry::base

where the mapping starts in its address space

Definition at line 72 of file vm.h.

Referenced by acpi_map(), arch_sigcode_map(), binfmt_elf_load_segments(), binfmt_fmt_load(), fb_putc(), mm_page_fault(), procfs_proc_maps(), procfs_proc_vmstats(), sys_mmap(), sys_munmap(), sys_sbrk(), vm_map(), vm_space_find(), vm_space_fork(), vm_space_insert(), and vm_unmap_full().

◆ flags

uint32_t vm_entry::flags

its permissions and flags (VM_*)

Definition at line 78 of file vm.h.

Referenced by acpi_map(), arch_sigcode_map(), binfmt_elf_load_segments(), binfmt_fmt_load(), check_violation(), earlycon_fb_init(), fbdev_vesa_map(), fbdev_vesa_prope(), mm_page_fault(), pf_anon(), pf_object(), pf_present(), pf_zero(), procfs_proc_maps(), procfs_proc_vmstats(), sys_mmap(), vm_map(), and vm_space_fork().

◆ off

size_t vm_entry::off

where the mapping starts in its object

Definition at line 87 of file vm.h.

Referenced by binfmt_elf_load_segments(), fbdev_vesa_map(), mm_page_fault(), procfs_proc_maps(), procfs_proc_vmstats(), and sys_mmap().

◆ paddr

paddr_t vm_entry::paddr

physical memory to map all at once (vm_map()), or 0 for pages that come in on page faults

Definition at line 69 of file vm.h.

Referenced by acpi_map(), earlycon_fb_init(), earlycon_fb_register(), fbdev_vesa_map(), fbdev_vesa_prope(), and vm_map().

◆ qnode

struct qnode* vm_entry::qnode

its node in its address space's list of mappings

Definition at line 90 of file vm.h.

Referenced by binfmt_elf_load_segments(), binfmt_fmt_load(), sys_mmap(), sys_munmap(), vm_space_fork(), and vm_space_insert().

◆ size

size_t vm_entry::size

its size

Definition at line 75 of file vm.h.

Referenced by acpi_map(), arch_sigcode_map(), binfmt_elf_load_segments(), binfmt_fmt_load(), earlycon_fb_init(), earlycon_fb_scroll(), fbdev_vesa_map(), fbdev_vesa_prope(), procfs_proc_maps(), procfs_proc_vmstats(), sys_mmap(), sys_munmap(), vm_map(), vm_space_find(), vm_space_fork(), vm_space_insert(), and vm_unmap_full().

◆ vm_anon

struct vm_anon* vm_entry::vm_anon

its anon: the pages the process wrote to

Definition at line 81 of file vm.h.

Referenced by mm_page_fault(), pf_anon(), pf_object(), pf_present(), pf_zero(), vm_entry_destroy(), and vm_space_fork().

◆ vm_object

struct vm_object* vm_entry::vm_object

its object: what its other pages come from (a file)

Definition at line 84 of file vm.h.

Referenced by arch_sigcode_map(), binfmt_elf_load_segments(), binfmt_fmt_load(), mm_page_fault(), pf_object(), procfs_proc_maps(), procfs_proc_vmstats(), sys_mmap(), vfs_map(), vm_entry_destroy(), and vm_space_fork().

The documentation for this struct was generated from the following file:

kernel/include/mm/vm.h

Data Fields