On Tue, Feb 18, 2014 at 09:33:01AM +0100, Martin Kletzander wrote:
On Tue, Feb 18, 2014 at 09:10:58AM +0100, Martin Kletzander wrote:
On Mon, Feb 17, 2014 at 05:01:05PM +0100, Niccolo Rigacci wrote:
Hi,
I'm trying to use libvirt for an armel virtual machine hosted into an x86_64 box.
I know the command line to start qemu-system-arm directly, but I cannot figure a proper .xml configuration file to let libvirt do this job.
We're still missing a full support for qemu-system-arm because it has different options, works differently and so on.
The main problem is that I want a serial console attached via telnet, this is the Qemu incantation:
-serial telnet::4000,server,nowait,nodelay
this is an old-style for -chardev serial, I believe
Wahtever I do in libvirt, I get this paramter added:
-device isa-serial
and this is new-style for x86 qemu, however, arm-based qemu haven't adopted this option yet.
To be a bit more precise, only *some* machine types support this option, others may have adopted it, but don't use it properly and what you describe is most probably properly adopted option, but qemu not adding an ISA controller (apart from non-arm qemu which has it always). Can you send me the output of 'virsh capabilities' and 'virsh dumpxml <domain_name>' so I can have a look at what's the particular type of machine you are using for which we should not use '-device isa-serial'?
Sorry for spamming so much about this, I should've thought about that more before the first reply. I looked at the code and this should be fixed since commit v1.1.2-9-g3a2beae [1]. Fromt hat I guess you are using version 1.1.2 or older. Please update your libvirt and le us know if that problem persists. Have a nice day, Martin [1] http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=3a2bea
Thanks, Martin
which causes Qemu to fail:
qemu-system-arm -M versatileab -device isa-serial \ -kernel vmlinuz-2.6.32-5-versatile qemu-system-arm: -device isa-serial: No 'ISA' bus found for device 'isa-serial'
How can I instead have -device pl011, or just have the default devices provided by qemu-system-arm, i.e. to prevent libvirt from adding the -nodefaults switch?
libvirt adds -nodefault and similar options (and has to add them) because otherwise there are devices which libvirt doesn't know of and is thus unable to work properly. I found one small thing in the code which might help you, I'll cook-up a patch and will put you in Cc when sending, can you try compiling it with that patch added (or from git when pushed) to see whether that will help you?
Have a nice day, Martin
Thank you!
-- Niccolo Rigacci - http://www.rigacci.net/ Campi Bisenzio - Firenze - Italy Tel. Office: +39-055-9331021, Mobile: +39-327-5619352
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