svn commit: r216501 - head/share/man/man4
Robert Watson
rwatson at FreeBSD.org
Fri Dec 17 11:25:38 UTC 2010
Author: rwatson
Date: Fri Dec 17 11:25:37 2010
New Revision: 216501
URL: http://svn.freebsd.org/changeset/base/216501
Log:
Correct some misundertandings on my part about PV vs HVM kernel
configuration options.
MFC after: 1 day
Modified:
head/share/man/man4/xen.4
Modified: head/share/man/man4/xen.4
==============================================================================
--- head/share/man/man4/xen.4 Fri Dec 17 10:05:21 2010 (r216500)
+++ head/share/man/man4/xen.4 Fri Dec 17 11:25:37 2010 (r216501)
@@ -40,17 +40,14 @@ the following lines in your kernel confi
.Bd -ragged -offset indent
.Cd "options PAE"
.Cd "options XEN"
+.Cd "nooptions NATIVE"
.Ed
.Pp
-To compile hardware-assisted virtualization (HVM) Xen guest support into an
-amd64 kernel, place the following line in your kernel configuration file:
+To compile hardware-assisted virtualization (HVM) Xen guest support with
+para-virtualized drivers into an amd64 kernel, place the following lines in
+your kernel configuration file:
.Bd -ragged -offset indent
.Cd "options XENHVM"
-.Ed
-.Pp
-To compile support for Xenbux and Xen PV drivers into an amd64 or i386
-kernel, place the following line in your kernel configuration file:
-.Bd -ragged -offset indent
.Cd "device xenpci"
.Ed
.Sh DESCRIPTION
@@ -73,7 +70,9 @@ semantics.
.Pp
.Fx
supports a fully para-virtualized (PV) kernel on the i386 architecture using
-.Cd "options XEN" ;
+.Cd "options XEN"
+and
+.Cd "nooptions NATIVE" ;
currently, this requires use of a PAE kernel, enabled via
.Cd "options PAE" .
.Pp
@@ -81,16 +80,23 @@ currently, this requires use of a PAE ke
supports hardware-assisted virtualization (HVM) on both the i386 and amd64
kernels; however, PV device drivers with an HVM kernel are only supported on
the amd64 architecture, and require
-.Cd "options XENHVM" .
+.Cd "options XENHVM"
+and
+.Cd "device xenpci" .
.Pp
Para-virtualized device drivers are required in order to support certain
functionality, such as processing management requests, returning idle
physical memory pages to the hypervisor, etc.
.Ss Xen DomU device drivers
-Adding
-.Cd "options xenpci"
-to the kernel configuration enables the Xen administrative or
-para-virtualized drivers:
+Xen administrative and para-virtualized drivers are automatically added to
+the kernel if a PV kernel is compiled using
+.Cd "options XEN" ;
+for HVM environments,
+.Cd "options XENHVM"
+and
+.Cd "device xenpci"
+are required.
+The follow drivers are supported:
.Bl -hang -offset indent -width blkfront
.It Nm balloon
Allow physical memory pages to be returned to the hypervisor as a result of
More information about the svn-src-all
mailing list