Re: [PATCH 1/2] conf: add debugcon-isa chardev guest interface

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On Mon, Jan 28, 2019 at 12:19:36PM +0100, Andrea Bolognani wrote:
> On Mon, 2019-01-28 at 10:36 +0000, Daniel P. Berrangé wrote:
> > On Mon, Jan 28, 2019 at 11:24:38AM +0100, Andrea Bolognani wrote:
> > > Should this be a <channel> at all?
> > > 
> > > We generally use <serial> for native emulated devices such as
> > > isa-serial, which isa-debugcon seems very closely related to...
> > 
> > <channel> is aiming to expose application specific guest data channels.
> > 
> > <serial> is aiming to expose general purpose guest data channels.
> > 
> > To me isa-debugcon is an application specific data channels, so
> > <channel> feels a better fit.
> 
> Maybe I have misunderstood what isa-debugcon is, but it looks more
> of a general purpose channel in the vein of isa-serial rather than
> something application specific like the qemu-guest-agent or SPICE
> channels for example.

My understanding is that isa-debugcon is a special device just
for usage by SeaBIOS to emit debug messages.

Regards,
Daniel
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