---
name: "pmap_activate"
section: "9"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/pmap_activate"
---

# pmap\_activate(9)

activate a physical map

## NAME

**pmap\_activate** – activate a physical map

## SYNOPSIS

**#include \<sys/param.h\>**

**#include \<vm/vm.h\>**

**#include \<vm/pmap.h\>**

*void*\

**pmap\_activate**(*struct thread \*td*);

## DESCRIPTION

The **pmap\_activate**() function activates the physical map for a user thread *td*. This function must be called before the thread's address space may be accessed.

## SEE ALSO

[pmap(9)](/pmap/9.md)

## AUTHORS

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