Problems when creating domU on OMAP5

[Chen Baozi <baozich@gmail.com>]

Hi all,

I tried to create a domU on OMAP5 today. But it seems there are still some
problems to solve before I can successfully creat it.

I first cloned Julien's arndale-domU-3.9 branch which mentioned in wiki.
Then I modified gic addresses xenvm-4.2.dts to meet OMAP5432 requirement:

--- a/arch/arm/boot/dts/xenvm-4.2.dts
+++ b/arch/arm/boot/dts/xenvm-4.2.dts
@@ -49,13 +49,13 @@
                reg = <0 0x80000000 0 0x08000000>;
        };
 
-       gic: interrupt-controller@2c001000 {
+       gic: interrupt-controller@48211000 {
                compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic";
                #interrupt-cells = <3>;
                #address-cells = <0>;
                interrupt-controller;
-               reg = <0 0x10481000 0 0x1000>,
-                     <0 0x10482000 0 0x100>;
+               reg = <0 0x48211000 0 0x1000>,
+                     <0 0x48212000 0 0x1000>;
        };
 
        timer {

And make the kernel image as wiki said:

$ cat arch/arm/boot/zImage arch/arm/boot/xenvm-4.2.dtb > image

Write a config file used by xl like:

kernel = "/root/domU/image"
memory = "128"
name = "domU"
vcpus = 1
disk = [ 'phy:/dev/loop0,xvda,w' ]

Setup loop device:

$ losetup /dev/loop0 /root/domU/xen-arm.img

which xen-arm.img is the a bootable rootfs.

Finally I execute xl to create the domU:

$ sudo xl create -f config -d
Parsing config from config
unable to format domain config as JSON (YAJL:1)
[   80.685264] Failed to unmap pfn:9bce5 rc:-2
[   80.691741] Failed to unmap pfn:9e7da rc:-2
[   80.696310] Failed to unmap pfn:9bce5 rc:-2
[   80.702494] Failed to unmap pfn:9ba57 rc:-2
[   80.706932] Failed to unmap pfn:9bce3 rc:-2
[   80.718394] Failed to unmap pfn:9bce2 rc:-2
libxl: error: libxl_device.c:894:device_backend_callback: unable to add device with path /local/domain/0/backend/vbd/1/51712
libxl: error: libxl_create.c:932:domcreate_launch_dm: unable to add disk devices
libxl: error: libxl_device.c:894:device_backend_callback: unable to remove device with path /local/domain/0/backend/vbd/1/51712
libxl: error: libxl.c:1451:devices_destroy_cb: libxl__devices_destroy failed for 1
(XEN) mm.c:1092:d0 gnttab_mark_dirty not implemented yet

Any ideas?

Baozi