Re: [Xen-devel] Problems when creating domU on OMAP5

[Chen Baozi <baozich@xxxxxxxxx>]

On Mon, Sep 16, 2013 at 09:18:28PM +0800, Chen Baozi wrote:
> 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
> 

Besides, after few minutes of executing "xl create" command, there are
continuous kernel oops message such as:

[ 1009.236697] INFO: rcu_sched self-detected stall on CPU { 0}  (t=65130
jiffies g=582 c=)
[ 1009.245404] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.11.0-rc3+ #4
[ 1009.251843] [<c001b5ec>] (unwind_backtrace+0x0/0xf8) from [<c0017b90>] 
(show_stack+0x1)
[ 1009.260426] [<c0017b90>] (show_stack+0x10/0x14) from [<c056dcac>] 
(dump_stack+0x70/0x8)
[ 1009.268600] [<c056dcac>] (dump_stack+0x70/0x8c) from [<c00b776c>] 
(rcu_check_callbacks)
[ 1009.277701] [<c00b776c>] (rcu_check_callbacks+0x340/0x7a8) from [<c005039c>] 
(update_p)
[ 1009.287680] [<c005039c>] (update_process_times+0x38/0x64) from [<c008e9a0>] 
(tick_sche)
[ 1009.297313] [<c008e9a0>] (tick_sched_handle+0x48/0x54) from [<c008ebe4>] 
(tick_sched_t)
[ 1009.306599] [<c008ebe4>] (tick_sched_timer+0x44/0x74) from [<c00658c0>] 
(__run_hrtimer)
[ 1009.315624] [<c00658c0>] (__run_hrtimer+0x7c/0x1dc) from [<c0066450>] 
(hrtimer_interru)
[ 1009.324917] [<c0066450>] (hrtimer_interrupt+0x104/0x2a0) from [<c0446e48>] 
(arch_timer)
[ 1009.334983] [<c0446e48>] (arch_timer_handler_virt+0x28/0x30) from 
[<c00b1e40>] (handle)
[ 1009.345485] [<c00b1e40>] (handle_percpu_devid_irq+0x78/0x114) from 
[<c00ae7b0>] (gener)
[ 1009.355551] [<c00ae7b0>] (generic_handle_irq+0x20/0x30) from [<c0014db4>] 
(handle_IRQ+)
[ 1009.364402] [<c0014db4>] (handle_IRQ+0x38/0x94) from [<c0008670>] 
(gic_handle_irq+0x28)
[ 1009.372909] [<c0008670>] (gic_handle_irq+0x28/0x5c) from [<c0573bc4>] 
(__irq_svc+0x44/)
[ 1009.381321] Exception stack(0xc0805dd0 to 0xc0805e18)
[ 1009.386445] 5dc0:                                     00000001 00000000 
00000000 c08108
[ 1009.394690] 5de0: c0802900 c0802900 c101e900 cbcbfc00 60000113 ce67f600 
c101e9b4 c0805c
[ 1009.402935] 5e00: 60000193 c0805e18 c0095e90 c0470d1c 60000113 ffffffff
[ 1009.409626] [<c0573bc4>] (__irq_svc+0x44/0x58) from [<c0470d1c>] 
(enqueue_to_backlog+0)
[ 1009.418563] [<c0470d1c>] (enqueue_to_backlog+0x148/0x290) from [<c04711d4>] 
(netif_rx+)
[ 1009.427503] [<c04711d4>] (netif_rx+0x54/0x154) from [<c03cf738>] 
(smsc95xx_rx_fixup+0x)
[ 1009.436272] [<c03cf738>] (smsc95xx_rx_fixup+0xcc/0x22c) from [<c03d2e64>] 
(usbnet_bh+0)
[ 1009.445123] [<c03d2e64>] (usbnet_bh+0xbc/0x260) from [<c0049108>] 
(tasklet_action+0x64)
[ 1009.453628] [<c0049108>] (tasklet_action+0x64/0xf8) from [<c0048450>] 
(__do_softirq+0x)
[ 1009.462481] [<c0048450>] (__do_softirq+0x114/0x290) from [<c0048970>] 
(irq_exit+0xa0/0)
[ 1009.470822] [<c0048970>] (irq_exit+0xa0/0xd8) from [<c0014db8>] 
(handle_IRQ+0x3c/0x94)
[ 1009.478796] [<c0014db8>] (handle_IRQ+0x3c/0x94) from [<c0008670>] 
(gic_handle_irq+0x28)
[ 1009.487304] [<c0008670>] (gic_handle_irq+0x28/0x5c) from [<c0573bc4>] 
(__irq_svc+0x44/)
[ 1009.495717] Exception stack(0xc0805f60 to 0xc0805fa8)
[ 1009.500841] 5f60: 00000001 00000001 00000000 c0810648 c0804000 c088b340 
c0804000 c088a4
[ 1009.509087] 5f80: c088b340 c057d320 c080c554 c0804000 60000093 c0805fa8 
c0095ed4 c00150
[ 1009.517330] 5fa0: 20000013 ffffffff
[ 1009.520895] [<c0573bc4>] (__irq_svc+0x44/0x58) from [<c0015100>] 
(arch_cpu_idle+0x20/0)
[ 1009.529228] [<c0015100>] (arch_cpu_idle+0x20/0x30) from [<c0084d10>] 
(cpu_startup_entr)
[ 1009.538356] [<c0084d10>] (cpu_startup_entry+0x78/0x220) from [<c07a37f4>] 
(start_kerne)

Baozi

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel