[libvirt] virtio serial device problem

[Li Zhang]

On 2013年05月07日 17:50, Paolo Bonzini wrote:
> Il 07/05/2013 09:20, Li Zhang ha scritto:
>> Hi all,
>>
>> When we use the latest version of QEMU to build ovirt,
>> we get this error reported from libvirt.
> What QEMU commit is this?
>
> It might have been fixed already.

You mean this is one bug of QEMU, right?

We are using our internal branch, and we may need to sync with upstream.

Do you know which commit fixes this problem?

Thanks a lot.
--Li
>
> 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
>>
>>
>>