linux-kernel - Re: [PATCH] virtio_console: Add support for multiple ports for generic guest and host communication

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Message-ID: <20090929103354.GA3766@amit-x200.redhat.com>
Date:	Tue, 29 Sep 2009 16:03:54 +0530
From:	Amit Shah <amit.shah@...hat.com>
To:	Christian Borntraeger <borntraeger@...ibm.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Alan Cox <alan@...ux.intel.com>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio_console: Add support for multiple ports for
	generic guest and host communication

On (Tue) Sep 29 2009 [12:09:25], Christian Borntraeger wrote:
> Am Dienstag 29 September 2009 11:24:31 schrieb Amit Shah:
> > OK; how I solved this is: a new internal message between the guest and
> > the host. If a host is a console port, the host has to indicate that by
> > passing a message to the guest and the guest then hooks it up with hvc.
> 
> I am curious how you going to make this compatible with existing code that 
> currently uses virtio console.

I've tested old qemu new kernel, new qemu old kernel, new qemu, new
kernel and all the cases work fine.

Please see the virtcons_probe() function for the details.

		Amit
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