.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
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.TH "__SN_MMIOWB" "9" "09 October 2005" "" ""

.SH NAME
__sn_mmiowb \- I/O space memory barrier
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
void __sn_mmiowb  ( \fIvoid\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIvoid\fB\fR
no arguments
.SH "DESCRIPTION"
.PP
.PP
See include/asm-ia64/io.h and Documentation/DocBook/deviceiobook.tmpl
for details.
.PP
On SN2, we wait for the PIO_WRITE_STATUS SHub register to clear.
See PV 871084 for details about the WAR about zero value.