> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/pmap_map.9.md).

# pmap\_map.9

`pmap_map` — 将物理内存范围映射到内核虚拟地址（KVA）空间

## 名称

`pmap_map`

## 概要

`#include <sys/param.h>`

`#include <vm/vm.h>`

`#include <vm/pmap.h>`

`Ft vm_offset_t Fo pmap_map vm_offset_t *virt vm_paddr_t start vm_paddr_t end int prot Fc`

## 描述

`pmap_map` 函数将一系列物理地址从 `start` 到 `end` 映射到内核虚拟地址（KVA）空间，保护位为 `prot`。

在 `*virt` 中传递的值被视为映射开始的虚拟地址的提示。

## 实现说明

`prot` 参数目前被机器相关实现忽略。

可以支持物理到虚拟区域直接映射的架构可以返回该区域内的适当地址，而保持 `*virt` 不变。

## 返回值

如果映射成功创建，`pmap_map` 函数返回映射开始的虚拟地址；`*virt` 也将更新为映射区域之后的第一个可用地址。

如果函数不成功，则返回 `NULL`。

## 参见

[pmap(9)](/man/man9/pmap.9.md)

## 作者

本手册页由 Bruce M Simpson <bms@spc.org> 编写。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://book.bsdcn.org/man/man9/pmap_map.9.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.