Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

pmap_object_init_pt(9) [freebsd man page]

PMAP_OBJECT_INIT_PT(9)					   BSD Kernel Developer's Manual				    PMAP_OBJECT_INIT_PT(9)

pmap_object_init_pt -- initialize page tables for a VM object SYNOPSIS
#include <sys/param.h> #include <vm/vm.h> #include <vm/pmap.h> void pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_object_t object, vm_pindex_t pindex, vm_size_t size, int limit); DESCRIPTION
The pmap_object_init_pt() function preloads the page table entries into the specified physical map pmap, for the given object at the virtual address addr, for size bytes, beginning at the page index pindex within the object. The map bits limit are heeded when creating the mapping. IMPLEMENTATION NOTES
This function is not strictly required by an architecture's pmap(9) implementation, but it does provide performance benefits if implemented. It is intended to eliminate the blast of soft faults on process startup, and immediately following a call to mmap(2). SEE ALSO
pmap(9), vm_map(9) AUTHORS
This manual page was written by Bruce M Simpson <>. BSD
July 21, 2003 BSD

Check Out this Related Man Page

PMAP(9) 						   BSD Kernel Developer's Manual						   PMAP(9)

pmap -- machine-dependent portion of virtual memory subsystem SYNOPSIS
#include <sys/param.h> #include <vm/vm.h> #include <vm/pmap.h> DESCRIPTION
The pmap module is the machine-dependent portion of the FreeBSD VM (Virtual Memory) sub-system. Each function documented herein must have its own architecture-dependent implementation. The pmap module is responsible for managing hardware-dependent objects such as page tables, address maps, TLBs, etc. Machine-dependent code must provide the header file <machine/pmap.h>. This file contains the definition of the 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 pmap implementation. The header file <vm/pmap.h> defines a structure for tracking pmap 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 struct pmap must contain an instance of this structure having the name pm_stats, and it must be updated by the implemen- tation after each relevant pmap operation. SEE ALSO
pmap(9), pmap_activate(9), pmap_change_wiring(9), pmap_clear_modify(9), pmap_clear_reference(9), pmap_copy(9), pmap_copy_page(9), pmap_enter(9), pmap_extract(9), pmap_extract_and_hold(9), pmap_growkernel(9), pmap_init(9), pmap_init2(9), pmap_is_modified(9), pmap_is_prefaultable(9), pmap_map(9), pmap_mincore(9), pmap_object_init_pt(9), pmap_page_exists_quick(9), pmap_page_init(9), pmap_page_protect(9), pmap_pinit(9), pmap_pinit0(9), pmap_pinit2(9), pmap_protect(9), pmap_qenter(9), pmap_qremove(9), pmap_release(9), pmap_remove(9), pmap_remove_all(9), pmap_remove_pages(9), pmap_resident_count(9), pmap_ts_modified(9), pmap_wired_count(9), pmap_zero_area(9), pmap_zero_idle(9), pmap_zero_page(9), vm_map(9) AUTHORS
This manual page was written by Bruce M Simpson <>. BSD
July 21, 2003 BSD
Man Page

Featured Tech Videos