Re: [PATCH 10/13] migration: Improve example and documentation of vmstate_register()

[Juan Quintela <quintela@redhat.com>]

Stefan Berger <stefanb@linux.ibm.com> wrote:
> On 10/19/23 15:08, Juan Quintela wrote:
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> ---
>>   docs/devel/migration.rst | 12 ++++++++----
>>   1 file changed, 8 insertions(+), 4 deletions(-)
>>
>> diff --git a/docs/devel/migration.rst b/docs/devel/migration.rst
>> index c3e1400c0c..a9fde75862 100644
>> --- a/docs/devel/migration.rst
>> +++ b/docs/devel/migration.rst
>> @@ -165,13 +165,17 @@ An example (from hw/input/pckbd.c)
>>         }
>>     };
>>
>> -We are declaring the state with name "pckbd".
>> -The ``version_id`` is 3, and the fields are 4 uint8_t in a KBDState structure.
>> -We registered this with:
>> +We are declaring the state with name "pckbd".  The ``version_id`` is
>> +3, and the fields are 4 uint8_t in a KBDState structure.  We
>
> and there are 4  uint8_t fields in the KBDState structure.

Done thanks.

>
>> +registered this with one of those.  The first one will generate a
>
> I am not sure what this means 'We registered this with one of
> those'. What is 'one of those'?

Changed to:

We
registered this ``VMSTATEDescription`` with one of the following
functions.

> Maybe you mean: We register the KBDState with one of the following
> functions.
>
>> +device ``instance_id`` different for each registration.  Use the
>> +second one if you already have an id different for each instance of
>> +the device:
> ... have an id that is is different for each ...

Done

>>
>>   .. code:: c
>>
>> -    vmstate_register(NULL, 0, &vmstate_kbd, s);
>> +    vmstate_register_any(NULL, &vmstate_kbd, s);
>> +    vmstate_register(NULL, instance_id, &vmstate_kbd, s);
>>
>>   For devices that are ``qdev`` based, we can register the device in the class
>>   init function:

Thanks