Re: [Xen-devel] Query for running Xen on ARM

[Julien Grall <julien.grall@xxxxxxx>]

(+Stefano)

On 27/05/18 18:48, Chaitanya Deshpande wrote:
> Hi,
Hello Chaitanya,

> I am Chaitanya, pursuing my master’s degree from Portland State 
> University in Embedded Systems.
> I have started working on Xen Project and I am beginner in this field.
>
> I have followed all the steps which are given in this link –
>
> https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions/qemu-system-aarch64
>
> https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions#Building_Xen_on_ARM
>
>
> 1) I have used buildroot(rootfs.cpio) for building Linux.
>
> 2) I have succeeded in booting Linux on Qemu (qemu-system-.aarch64)
>
> 3) Used make dist-xen XEN_TARGET_ARCH=arm64 
> CROSS_COMPILE=aarch64-linux-gnu-  for cross compiling and getting Xen 
> binary.
> 4) My root is root - root=/dev/sda1
May I ask why the root is different from the example in the wiki page? 
Are you using a different setup for the disk (e.g no virtio)?
> After running the  last step UEFI Prompt opens and it gives me this error.
What do you mean? Which last step?

> error: no such device: root.
This is coming from UEFI, right?

> Press any key to continue...
> EFI stub: Booting Linux Kernel...
This is booting Linux and not Xen. It is also trying to using ACPI 
rather than DT. Would it be possible for you to drop to the UEFI shell 
and try to boot by hand?
> EFI stub: Using DTB from configuration table
> EFI stub: Exiting boot services and installing virtual address map...
> [   11.231789] acpi PNP0A08:00: Bus 0000:00 not present in PCI namespace
> [   41.972816] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! 
> [swapper/0:1]
> [  229.940369] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! 
> [swapper/0:1]
> [  257.939966] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! 
> [swapper/0:1]
> [  290.035395] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 23s! 
> [swapper/0:1]
> [  303.595373] kvm [1]: error: no compatible GIC node found
> [  303.619405] kvm [1]: error initializing Hyp mode: -19
>
> I am unable to find the root cause of this issue. Please can anyone help 
> me with this.
Cheers,

--
Julien Grall

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