Re: [Qemu-devel] about kvmclock QOM

[Zhi Yong Wu]

On Tue, Mar 13, 2012 at 9:52 PM, Jan Kiszka <address@hidden> wrote:
> On 2012-03-13 14:40, Zhi Yong Wu wrote:
>> On Tue, Mar 13, 2012 at 9:36 PM, Jan Kiszka <address@hidden> wrote:
>>> On 2012-03-13 13:57, Zhi Yong Wu wrote:
>>>> HI, Jan
>>>>
>>>> Why can i not see kvmclock device in the output of qom-list? Since it
>>>> has been converted to QOM.
>>>
>>> qom-list, like all QMP/ scripts, are currently broken for me, can't test
>>> therefore. Please post any findings to the list while I'm digging into
>> I can see other devices such emulated nics via qom-list, but didn't
>> see kvmclock device in its output.
>> what is kvmclock's path if it can work normally?
>> My qemu command line is
>>
>> address@hidden qemu]# x86_64-softmmu/qemu-system-x86_64 -m 512 -drive
>> file=/home/zwu/work/misc/image/rh6.1.img,if=ide,cache=none -enable-kvm
>> -qmp unix:/tmp/server.sock,server,nowait -netdev type=user,id=net
>> -device virtio-net-pci,netdev=net,id=net -net user,vlan=1 -device
>> virtio-net-pci,id=net2,vlan=1 -chardev id=stdio,backend=stdio -device
>> isa-serial,chardev=stdio,id=serial
>
> Ah, now it works again (forgot mode="control" for -mon).
>
>>
>> address@hidden qemu]# QMP/qom-list -s /tmp/server.sock /
>> vga/
>> i440fx/
>> peripheral/
>> peripheral-anon/
>> address@hidden qemu]# QMP/qom-list -s /tmp/server.sock /peripheral
>> serial/
>> net2/
>> net/
>>
>
> kvmclock (like many devices) is not yet linked to some parent device, so
static TypeInfo kvmclock_info = {
    .name          = "kvmclock",
    .parent        = TYPE_SYS_BUS_DEVICE,
It seems to be linked from here
    .instance_size = sizeof(KVMClockState),
    .class_init    = kvmclock_class_init,
};

I also checked other devices which can be seen in the output of
qom-list. I have not seen kvmclock QOM is different from other
devices.
So i am very surprised that why kvmclock device can not be seen in
qom-list output.

> it's not present in that tree. This also happens to auto-created
> isa-serial, e.g. (just leave out -device isa-serial)
Yeah, i can see it in qom-list output.
>
> Again, please post to the list, not privately.
>
> Jan
>
> --
> Siemens AG, Corporate Technology, CT T DE IT 1
> Corporate Competence Center Embedded Linux



-- 
Regards,

Zhi Yong Wu