'\" t
.\"     Title: remap_pfn_range
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Memory Management in Linux
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "REMAP_PFN_RANGE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Memory Management in Linux"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
remap_pfn_range \- remap kernel memory to userspace
.SH "SYNOPSIS"
.HP \w'int\ remap_pfn_range('u
.BI "int remap_pfn_range(struct\ vm_area_struct\ *\ " "vma" ", unsigned\ long\ " "addr" ", unsigned\ long\ " "pfn" ", unsigned\ long\ " "size" ", pgprot_t\ " "prot" ");"
.SH "ARGUMENTS"
.PP
\fIvma\fR
.RS 4
user vma to map to
.RE
.PP
\fIaddr\fR
.RS 4
target user address to start at
.RE
.PP
\fIpfn\fR
.RS 4
physical address of kernel memory
.RE
.PP
\fIsize\fR
.RS 4
size of map area
.RE
.PP
\fIprot\fR
.RS 4
page protection flags for this mapping
.RE
.SH "NOTE"
.PP
this is only safe if the mm semaphore is held when called\&.
.SH "COPYRIGHT"
.br