---
name: "pmap_object_init_pt"
section: "9"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/pmap_object_init_pt"
---

# pmap\_object\_init\_pt(9)

initialize page tables for a VM object

## NAME

**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)](/pmap/9.md) 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)](/mmap/2.md).

## SEE ALSO

[pmap(9)](/pmap/9.md), [vm\_map(9)](/vm_map/9.md)

## AUTHORS

This manual page was written by Bruce M Simpson ⟨bms@spc.org⟩.