Re: [Qemu-devel] [PATCH RFC 0/3] basic support for composing sysbus devices

[Avi Kivity]

On 06/21/2011 12:32 AM, Blue Swirl wrote:
> On Mon, Jun 20, 2011 at 6:23 PM, Paul Brook<address@hidden>  wrote:
> >>  >  Yeah, that's why I said, "hard to do well".  It makes it very hard to add
> >>  >  new socket types.
> >>
> >>  PCI, USB, IDE, SCSI, SBus, what else? APICBus? I2C? 8 socket types
> >>  ought to be enough for anybody.
> >
> >  Off the top of my head: AClink (audio), i2s (audio), SSI/SSP (synchonous
> >  serial), Firewire, rs232, CAN, FibreChannel, ISA, PS2, ADB (apple desktop 
> bus)
> >  and probably a bunch of others I've missed.  There's also a bunch of all-but
> >  extinct system architectures with interesting bus-level features (MCA, NuBus,
> >  etc.)
>
> Are these really buses with identifiable sockets? For example, it's
> not possible to enumerate the users of ISA bus or RS-232.

It's not possible from the guest, but it's possible from outside the guest.

RS-232 even supports hotplug.

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error compiling committee.c: too many arguments to function