@@ -40,8 +40,8 @@ to boot. For example if this is the bootcmd for Xen and Dom0:
bootm 0x1400000 0x9000000 0x1280000
-If we want to add one DomU with Image-DomU as the DomU kernel
-and ramdisk-DomU as DomU ramdisk:
+If we want to add one DomU with Image-DomU as the DomU kernel
+and ramdisk-DomU as DomU ramdisk:
tftpb 0x1280000 xen.dtb
tftpb 0x80000 xen-Image
@@ -61,25 +61,27 @@ the presence of the additional VM and its configuration. It is done via
device tree adding a node under /chosen as follows:
domU1 {
- compatible = "xen,domain";
- memory = <0x20000>;
- cpus = 1;
- vpl011;
-
- module@2000000 {
- compatible = "multiboot,kernel", "multiboot,module";
- reg = <0x2000000 0xffffff>;
- bootargs = "console=ttyAMA0";
- };
-
- module@30000000 {
- compatible = "multiboot,ramdisk", "multiboot,module";
- reg = <0x3000000 0xffffff>;
- };
+ #address-cells = <0x00000001>;
+ #size-cells = <0x00000001>;
+ compatible = "xen,domain";
+ memory = <0x20000>;
+ cpus = 1;
+ vpl011;
+
+ module@2000000 {
+ compatible = "multiboot,kernel", "multiboot,module";
+ reg = <0x2000000 0xffffff>;
+ bootargs = "console=ttyAMA0";
+ };
+
+ module@30000000 {
+ compatible = "multiboot,ramdisk", "multiboot,module";
+ reg = <0x3000000 0xffffff>;
+ };
};
-Where memory is the memory of the VM in KBs, cpus is the number of
-cpus. module@2000000 and module@3000000 advertise where the kernel and
+Where memory is the memory of the VM in KBs, cpus is the number of
+cpus. module@2000000 and module@3000000 advertise where the kernel and
ramdisk are in memory.
See docs/misc/arm/device-tree/booting.txt for more information.
@@ -111,3 +113,21 @@ limitations:
the Xen command line. The NULL scheduler automatically assigns and
pins vCPUs to pCPUs, but the vCPU-pCPU assignments cannot be
configured.
+
+Notes
+-----
+
+- 'xl console' command will not attach to the domain's console in case
+ of dom0less. DomU are domains created by Xen (similar to Dom0) and
+ therefore they are all managed by Xen and some of the commands may not work.
+
+ A user is allowed to configure the key sequence to switch input.
+ Pressing the Xen "conswitch" (Ctrl-A by default) three times
+ switches input in case of dom0less mode.
+
+- Domains created by Xen will have no name at boot. Domain-0 has a name
+ thanks to the helper xen-init-dom0 called at boot by the initscript.
+ If you want to setup DomU name, then you will have to create the xenstore
+ node associated. By default DomU names are shown as '(null)' in the
+ xl domains list.
+
- Changed unprintable characters with %s/\%xA0/ /g So all the spaces are 0x20 now. - Added address-cells and size-cells to configuration example. This resolves the dom0less boot issue in case of arm64. - Added some notes about xl tools usage in case of dom0less. Signed-off-by: Viktor Mitin <viktor_mitin@epam.com> --- docs/features/dom0less.pandoc | 58 +++++++++++++++++++++++------------ 1 file changed, 39 insertions(+), 19 deletions(-)