Re: [Qemu-devel] [PATCH RFC v4 44/44] qom: Introduce CPU class

[Igor Mitsyanko]

On 13.03.2012 3:13 PM, Andreas Färber wrote:

> In SysBusDeviceClass etc. we use the specific object type, too.
> Obviously my CPU is the first "new" QOM type, so we can go different
> ways if we want to. As long as it's a CPU-specific mechanism, using the
> specific type avoids some casts.
>
> > It will be easier to generalize later qdev code and not make special
> > case when
> > adding cpus.
>
> I never heard anyone wanting to generalize reset so far. I don't think
> it belongs into Object at least. Maybe DeviceState. Anthony? Paolo?

We can have a special object for this, let's call it ResetLine for 
example, with methods ResetLine::connect, ResetLine::assert or something 
like that. Different ResetLine objects could trigger reset of different 
sets of subdevices, just like real hardware can have several reset types 
(for example, STM32 has 3 different reset types).