Re: [Qemu-devel] [PATCH V14 2/3] pc: add a Virtual Machine Generation ID device

["Andreas Färber" <afaerber@suse.de>]

Am 04.03.2015 um 14:49 schrieb Michael S. Tsirkin:
> On Wed, Mar 04, 2015 at 02:12:32PM +0100, Igor Mammedov wrote:
>> On Wed, 4 Mar 2015 13:11:48 +0100
>> "Michael S. Tsirkin" <mst@redhat.com> wrote:
>>> On Tue, Mar 03, 2015 at 09:33:51PM +0100, Igor Mammedov wrote:
>>>> On Tue, 3 Mar 2015 18:35:39 +0100
>>>> "Michael S. Tsirkin" <mst@redhat.com> wrote:
>>>>> On Tue, Mar 03, 2015 at 05:18:14PM +0100, Igor Mammedov wrote:
>>>>>> To change uuid in runtime use:
>>>>>> qom-set "/machine/peripheral/FOO.uuid"
>>>>>> "124e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
>>>>>
>>>>> Looking just at this, how does user discover this functionality?
>>>> what do you mean?
>>>>
>>>> [...]
>>>
>>> Just this.  You are a user. You want to change the vm gen id.
>>> Adding devices is partially documented
>>> in -help and -device help. commands are documented in hmp help.
>>> But how do you find out that qom-set should be used to
>>> update vm gen id, and how do you find out how to do this?
>> I don't really know, it's approach used in original patches.
>> Any suggestions?
>> Do QOM properties have some 'help' connected to them? If yes we
>> could stick explanation there so that -device vmgenid,help
>> would show it at least.
> 
> Eric, Andreas, any comments on this part?

Since recently there is some function to add a description to either
qdev or QOM properties, I don't quite remember where exactly...

Regards,
Andreas

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