[Qemu-devel] Re: [PATCH 2/3] virtio-console: Add a virtio-serial bus, support for multiple devices and ports

[Amit Shah <amit.shah@redhat.com>]

On (Tue) Dec 22 2009 [18:55:16], Alexander Graf wrote:
> Amit Shah wrote:
> > This patch migrates virtio-console to the qdev infrastructure and
> > creates a new virtio-serial bus on which multiple ports are exposed as
> > devices. The bulk of the code now resides in a new file with
> > virtio-console.c being just a simple qdev device.
> >
> > This interface enables spawning of multiple virtio consoles as well as generic
> > serial ports.
> >
> > The older -virtconsole argument still works, but when using the new
> > functionality, it is recommended to use
> >
> >     -device virtio-serial-pci -device virtconsole,...
> >
> > The virtconsole device type accepts a chardev as an argument and a 'name'
> > argument to identify the corresponding consoles on the host as well as the
> > guest. The name, if given, is exposed via the 'name' sysfs attribute in the
> > guest.
> >
> > Care has been taken to ensure compatibility with kernels that do not
> > support multiple ports as well as accepting incoming migrations from older
> > qemu versions.
> >
> > Signed-off-by: Amit Shah <amit.shah@redhat.com>
> >   
> 
> Please split this patch. I got dizzy after only reading 1/4th of it :-).

Ah, sooner the better I guess. I'll do that soon.

The interesting bits for you are in hw/s390-* and vl.c though.

		Amit