[libvirt] [Qemu-devel] virtio serial device problem

[fred.konrad at greensocs.com]

> On 05/07/2013 07:50 PM, Paolo Bonzini wrote:
>> Il 07/05/2013 09:20, Li Zhang ha scritto:
>>> Hi all,

Hi,
>>>
>>> When we use the latest version of QEMU to build ovirt,
>>> we get this error reported from libvirt.
>>
>> What QEMU commit is this?
>
>
> b3e6d591b05538056d665572f3e3bbfb3cbb70e7

This commit is from 05/29 no?

there were issues with that. But it should be fixed.

Do you still have the command-line issue with the last git?

See commit 80270a19685dd20eda017b0360c743b3e3ed6f57

Thanks,
Fred

>
>
>> It might have been fixed already.
>
> Hm. From what I see, it is all correct from the qemu side, the problem is
> in libvirt which does not know about "virtio-pci-bus" yet.
>
>
>
>> Paolo
>>
>>>
>>> qemu-system-ppc64: -device
>>> virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm:
>>>
>>> Bus 'virtio-serial0.0' is full
>>> qemu-system-ppc64: -device
>>> virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm:
>>>
>>> Bus 'virtio-serial0.0' not found
>>>
>>> Libvirt helps create QEMU command line and put virtserialport device to
>>> bus virtio-serial0.0.
>>> For latest version of QEMU, the bus type is changed.
>>>
>>> (qemu) info qtree
>>> bus: main-system-bus
>>>   type System
>>>   dev: spapr-pci-host-bridge, id ""
>>>     index = 0
>>>     buid = 0x800000020000000
>>>     liobn = 0x80000000
>>>     mem_win_addr = 0x100a0000000
>>>     mem_win_size = 0x20000000
>>>     io_win_addr = 0x10080000000
>>>     io_win_size = 0x10000
>>>     msi_win_addr = 0x10090000000
>>>     irq 0
>>>     bus: pci
>>>       type PCI
>>>       dev: virtio-serial-pci, id "virtio-serial0"
>>>         ioeventfd = on
>>>         vectors = 2
>>>         class = 0x780
>>>         indirect_desc = on
>>>         event_idx = on
>>>         max_ports = 31
>>>         addr = 03.0
>>>         romfile = <null>
>>>         rombar = 1
>>>         multifunction = off
>>>         command_serr_enable = on
>>>         class Class 0780, addr 00:03.0, pci id 1af4:1003 (sub
>>> 1af4:0003)
>>>         bar 0: i/o at 0xffffffffffffffff [0x1e]
>>>         bar 1: mem at 0xffffffffffffffff [0xffe]
>>>         bus: virtio-serial0.0
>>>           type virtio-pci-bus
>>>           dev: virtio-serial-device, id ""
>>>             max_ports = 31
>>>             bus: virtio-serial-bus.0
>>>               type virtio-serial-bus
>>>               dev: virtserialport, id "channel1"
>>>                 chardev = charchannel1
>>>                 nr = 2
>>>                 name = "org.qemu.guest_agent.0"
>>>                 port 2, guest off, host off, throttle off
>>>               dev: virtserialport, id "channel0"
>>>                 chardev = charchannel0
>>>                 nr = 1
>>>                 name = "com.redhat.rhevm.vdsm"
>>>                 port 1, guest off, host off, throttle off
>>>
>>>
>>> But we tried to replace virtio-serial0.0 with virtio-serial-bus.0,
>>> SLOF crashes. It still doesn't work at all.
>>>
>>> Does anyone know how to use virtserialport in QEMU command line?
>>> If configuration is changed in QEMU, libvirt also needs to change it
>>> accordingly.
>>>
>>> Thanks. :)
>>> --Li
>>>
>>>
>>>
>
>
> --
> Alexey Kardashevskiy
> IBM OzLabs, LTC Team
>
> e-mail: aik at au1.ibm.com
> notes: Alexey Kardashevskiy/Australia/IBM
>
>
>