Re: [libvirt] virtio serial device problem
On 05/07/2013 07:50 PM, 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?
b3e6d591b05538056d665572f3e3bbfb3cbb70e7
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(a)au1.ibm.com
notes: Alexey Kardashevskiy/Australia/IBM