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Re: [Qemu-discuss] Problem using qemu on an ARM environment


From: Aleksei
Subject: Re: [Qemu-discuss] Problem using qemu on an ARM environment
Date: Thu, 20 Oct 2016 23:25:44 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

Hi,

If you can pass arguments to Qemu, try adding "-nographic" or "-display none", so Qemu doesn't try to use sdl.


--Regards, Aleksei



From: Cristiano Carlos Matte
Sent: Thursday, October 20, 2016 10:26PM
To: Qemu-arm, Qemu-discuss
Subject: [Qemu-discuss] Problem using qemu on an ARM environment
Hi everyone,

I have an ARM environment with the Linux Kernel 3.19, Ubuntu 12.04 filesystem and Xen 4.4 for ARM. This environment is running on a Cubietruck. My intent is to run virtual machines using Xen, which relies on qemu to emulate disks.

I can successfully instantiate virtual machines if I use a 'phy' disk in Xen, as it does not use qemu for emulation. The problem is that I need to use .img disks, Xen is failing because qemu is failing.

In fact, Xen on ARM uses qemu-system-i386, as stated in https://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions#Use_of_qemu-system-i386_on_ARM.

But, if I try to execute qemu-dm from /usr/bin/qemu-system-i386 it outputs the following error:
Could not initialize SDL (No available video device) - exiting

The thing is that the environment I am using has no video device and I do not need it from qemu. But I also don't know if Xen is facing the same problem with qemu or if another problem is happening, because it does not log it for me. What Xen is logging is:
‚Äč
libxl: error: libxl_dm.c:1393:device_model_spawn_outcome: domain 16 device model: spawn failed (rc=-3)
libxl: error: libxl_create.c:1189:domcreate_devmodel_started: device model did not start: -3
libxl: error: libxl_dm.c:1497:kill_device_model: Device Model already exited

Which is not very helpful.

Does anyone have any idea about what can be occurring with qemu?

Regards
Cristiano



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