Hello,
On 28.07.2014 13:04, Christian Menard wrote:
I'm trying to tun NOVA(64)+Genode+VMBox+Android on a System with Intel Core i5-4302Y CPU. So far it worked fine, but I got trouble since commit cdb7904 "timer: nova specific version of the service". With this patch applied, Android on VMBox is not booting up anymore. Instead I get messages like this:
[ 19.900000] INFO: rcu_preempt self-detected stall on CPU
I tried to reproduce the issue in QEMU, but there everything works fine. So the issue seems to be related to my Hardware. In the logs everything looks fine, I couldn't find any abnormalities.
Do you have any ideas on what might go wrong or where I should start investigating? Unfortunately my debugging possibilities are limited, as I have no serial connection.
The commit is in general not strictly required - it mainly should reduce a bit the load in the system. If you still want to debug this - you may try:
to disable for tsc deadline mode on the hypervisor command line, see repos/base-nova/run/env file and add there a " nodl " option to the hypervisor commandline
Another issue could arise if the timer service is running at the same priority level as the other services and applications of your scenario. You may try to set the timer service at a higher priority. See the virtualbox run scripts for a example.
Which x86 hardware do you use ? Does it happen on all your machines or only on one specific one ?
Do you have maybe a working run script or branch and can you put the Android image somewhere, so I could try to reproduce it.
Cheers,
Alex.
Thanks Christian
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