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Date: Tue, 22 Dec 2009 18:55:16 +0100
From: Alexander Graf <agraf@suse.de>
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Subject: [Qemu-devel] Re: [PATCH 2/3] virtio-console: Add a virtio-serial
 bus, support for multiple devices and ports
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To: Amit Shah <amit.shah@redhat.com>
Cc: armbru@redhat.com, qemu-devel@nongnu.org, kraxel@redhat.com

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 :-).

Alex