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

[Alexey Kardashevskiy <aik@au1.ibm.com>]

Hi!

On 05/09/2013 01:53 AM, fred.konrad@greensocs.com wrote:
>> 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


No, this patch helps, thanks!




> 
> 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@au1.ibm.com
notes: Alexey Kardashevskiy/Australia/IBM