'\" t
.\"     Title: vm_iomap_memory
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Memory Management in Linux
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "VM_IOMAP_MEMORY" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Memory Management in Linux"
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.SH "NAME"
vm_iomap_memory \- remap memory to userspace
.SH "SYNOPSIS"
.HP \w'int\ vm_iomap_memory('u
.BI "int vm_iomap_memory(struct\ vm_area_struct\ *\ " "vma" ", phys_addr_t\ " "start" ", unsigned\ long\ " "len" ");"
.SH "ARGUMENTS"
.PP
\fIvma\fR
.RS 4
user vma to map to
.RE
.PP
\fIstart\fR
.RS 4
start of area
.RE
.PP
\fIlen\fR
.RS 4
size of area
.RE
.SH "DESCRIPTION"
.PP
This is a simplified
\fBio_remap_pfn_range\fR
for common driver use\&. The driver just needs to give us the physical memory range to be mapped, we\*(Aqll figure out the rest from the vma information\&.
.PP
NOTE! Some drivers might want to tweak vma\->vm_page_prot first to get whatever write\-combining details or similar\&.
.SH "COPYRIGHT"
.br