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pmap.9freebsd
Langue: en
Version: 365021 (ubuntu - 25/10/10)
Section: 9 (Appels noyau Linux)
BSD mandoc
NAME
pmap - machine-dependent portion of virtual memory subsystemSYNOPSIS
In sys/param.h In vm/vm.h In vm/pmap.hDESCRIPTION
The module is the machine-dependent portion of the Fx VM (Virtual Memory) sub-system. Each function documented herein must have its own architecture-dependent implementation.The module is responsible for managing hardware-dependent objects such as page tables, address maps, TLBs, etc.
Machine-dependent code must provide the header file In machine/pmap.h . This file contains the definition of the Vt pmap structure:
struct pmap { /* Contents defined by pmap implementation. */ }; typedef struct pmap *pmap_t;
This header file may also define other data structures used by the implementation.
The header file In vm/pmap.h defines a structure for tracking statistics (see below). This structure is defined as:
struct pmap_statistics { long resident_count; /* number of mapped pages */ long wired_count; /* number of wired pages */ };
The implementation's Vt struct pmap must contain an instance of this structure having the name pm_stats and it must be updated by the implementation after each relevant operation.
SEE ALSO
pmap(9), pmap_activate9, pmap_change_wiring9, pmap_clear_modify9, pmap_clear_reference9, pmap_copy9, pmap_copy_page9, pmap_enter9, pmap_extract9, pmap_extract_and_hold9, pmap_growkernel9, pmap_init9, pmap_init29, pmap_is_modified9, pmap_is_prefaultable9, pmap_map9, pmap_mincore9, pmap_object_init_pt9, pmap_page_exists_quick9, pmap_page_init9, pmap_page_protect9, pmap_pinit9, pmap_pinit09, pmap_pinit29, pmap_protect9, pmap_qenter9, pmap_qremove9, pmap_release9, pmap_remove9, pmap_remove_all9, pmap_remove_pages9, pmap_resident_count9, pmap_ts_modified9, pmap_wired_count9, pmap_zero_area9, pmap_zero_idle9, pmap_zero_page9, vm_map9AUTHORS
This manual page was written by An Bruce M Simpson Aq bms@spc.org .Contenus ©2006-2024 Benjamin Poulain
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