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From: Gerd Hoffmann <kraxel@redhat.com>
To: Amit Shah <amit.shah@redhat.com>
Cc: virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
	Anthony Liguori <anthony@codemonkey.ws>,
	qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest	communication
Date: Fri, 14 Aug 2009 15:49:18 +0200	[thread overview]
Message-ID: <4A856B5E.2000303@redhat.com> (raw)
In-Reply-To: <20090814081518.GA7418@amit-x200.redhat.com>

On 08/14/09 10:15, Amit Shah wrote:
> The guest code sort-of ends up looking like this after merging
> virtio_console into virtio_serial.

I think it should better go the other way around: add multichannel 
support to virtio-concole, probably guarded by a feature flag so old 
host+new guest and new host+old guest combinations continue to work.

> Since there's support for only one console as of now, I've assigned port
> #2 as the console port so that we hook into hvc when a port is found at
> that location.

Doesn't sound like this is going to be backward compatible ...

Also I still think passing a 'protocol' string for each port is a good 
idea, so you can stick that into a sysfs file for guests use.

Note it is probably easy to make virtio-console support multiple hvc 
lines by having one protocol for that (named 'console' for example).

cheers,
   Gerd

  parent reply	other threads:[~2009-08-14 13:49 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1248717876-17630-1-git-send-email-amit.shah@redhat.com>
2009-07-27 18:04 ` [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Amit Shah
2009-07-27 20:22 ` virtio-serial: An interface for host-guest communication Anthony Liguori
     [not found] ` <4A6E0C9E.10908@codemonkey.ws>
2009-07-27 20:32   ` [Qemu-devel] " Daniel P. Berrange
     [not found]   ` <20090727203214.GG15020@redhat.com>
2009-07-27 20:37     ` Anthony Liguori
2009-07-27 20:46     ` Jamie Lokier
     [not found]     ` <20090727204627.GA32432@shareable.org>
2009-07-27 23:44       ` Anthony Liguori
     [not found]       ` <4A6E3BDC.8050101@codemonkey.ws>
2009-07-28 10:36         ` Amit Shah
     [not found]         ` <20090728103624.GA5176@amit-x200.redhat.com>
2009-07-28 13:42           ` Anthony Liguori
     [not found]           ` <4A6F0048.1000103@codemonkey.ws>
2009-07-29  7:44             ` Amit Shah
     [not found]             ` <20090729074418.GA24925@amit-x200.redhat.com>
2009-07-29  7:48               ` Gleb Natapov
     [not found]               ` <20090729074827.GJ30449@redhat.com>
2009-08-05 18:00                 ` Jamie Lokier
2009-07-28 14:00         ` Richard W.M. Jones
     [not found]         ` <20090728140029.GA16067@amd.home.annexia.org>
2009-07-28 14:48           ` Anthony Liguori
     [not found]           ` <4A6F0FA0.4010101@codemonkey.ws>
2009-07-28 14:55             ` Richard W.M. Jones
     [not found]             ` <20090728145557.GI3842@amd.home.annexia.org>
2009-07-28 15:00               ` Anthony Liguori
2009-08-03 19:57           ` Anthony Liguori
     [not found]           ` <4A77410D.4090804@codemonkey.ws>
2009-08-05 17:57             ` Jamie Lokier
     [not found]             ` <20090805175713.GB28738@shareable.org>
2009-08-05 18:00               ` Anthony Liguori
2009-08-06 10:35               ` Amit Shah
     [not found]               ` <4A79C8D9.5030606@codemonkey.ws>
2009-08-06 10:38                 ` Amit Shah
     [not found]                 ` <20090806103843.GC9222@amit-x200.redhat.com>
2009-08-06 13:29                   ` Anthony Liguori
     [not found]                   ` <4A7ADAC4.70902@codemonkey.ws>
2009-08-06 13:41                     ` Amit Shah
     [not found]                     ` <20090806134103.GC11733@amit-x200.redhat.com>
2009-08-06 13:58                       ` Anthony Liguori
     [not found]                       ` <4A7AE169.4000606@codemonkey.ws>
2009-08-06 14:04                         ` Amit Shah
     [not found]                         ` <20090806140404.GA12083@amit-x200.redhat.com>
2009-08-06 17:37                           ` Jamie Lokier
     [not found]                           ` <20090806173740.GA1178@shareable.org>
2009-08-07  6:38                             ` Amit Shah
     [not found]                             ` <20090807063800.GA16769@amit-x200.redhat.com>
2009-08-07 14:14                               ` Anthony Liguori
2009-08-10  6:55                                 ` Amit Shah
2009-08-10  9:47                                   ` Gerd Hoffmann
     [not found]                                   ` <4A7FECCA.8080804@redhat.com>
2009-08-10 13:02                                     ` Anthony Liguori
     [not found]                                     ` <4A801A7B.1020208@codemonkey.ws>
2009-08-10 14:02                                       ` Gerd Hoffmann
     [not found]                                       ` <4A80287C.7050400@redhat.com>
2009-08-10 14:20                                         ` Anthony Liguori
2009-08-10 14:20                                         ` Anthony Liguori
     [not found]                                         ` <4A802CA7.9020701@codemonkey.ws>
2009-08-10 15:34                                           ` Gerd Hoffmann
     [not found]                                           ` <4A803E07.7080407@redhat.com>
2009-08-10 16:59                                             ` Anthony Liguori
     [not found]                                             ` <4A8051F3.7040400@codemonkey.ws>
2009-08-10 17:27                                               ` Anthony Liguori
2009-08-12 18:27                                               ` Paul Brook
2009-08-14  8:15                                               ` Amit Shah
     [not found]                                               ` <20090814081518.GA7418@amit-x200.redhat.com>
2009-08-14 13:29                                                 ` Anthony Liguori
     [not found]                                                 ` <4A8566B8.8030808@codemonkey.ws>
2009-08-14 13:41                                                   ` Amit Shah
2009-08-20 13:42                                                   ` Amit Shah
     [not found]                                                   ` <20090820134241.GA19395@amit-x200.redhat.com>
2009-08-20 14:25                                                     ` Daniel P. Berrange
2009-08-20 14:38                                                       ` Amit Shah
2009-08-20 14:42                                                         ` Amit Shah
2009-08-14 13:49                                                 ` Gerd Hoffmann [this message]
2009-08-14 16:25                                                   ` Anthony Liguori
     [not found]                                                   ` <4A858FFC.7000607@codemonkey.ws>
2009-08-20  7:31                                                     ` Rusty Russell
     [not found]                                                     ` <200908201701.30467.rusty@rustcorp.com.au>
2009-08-20  7:44                                                       ` Gerd Hoffmann
     [not found]                                                       ` <4A8CFEDD.4000009@redhat.com>
2009-08-20  7:55                                                         ` Amit Shah
     [not found]                                                         ` <20090820075539.GA5876@amit-x200.redhat.com>
2009-08-20 17:10                                                           ` Jamie Lokier
2009-08-25 12:43                                                         ` Rusty Russell
     [not found]                                                         ` <200908252213.06729.rusty@rustcorp.com.au>
2009-08-25 13:00                                                           ` Gerd Hoffmann
2009-08-10 23:09                                     ` Rusty Russell
     [not found]                                     ` <200908110839.28901.rusty@rustcorp.com.au>
2009-08-11  0:16                                       ` Anthony Liguori
2009-08-10 14:27                                   ` Anthony Liguori
2009-08-10 15:57                                     ` Gerd Hoffmann
2009-08-05 18:32             ` Richard W.M. Jones
     [not found] ` <1248717876-17630-2-git-send-email-amit.shah@redhat.com>
2009-07-27 18:04   ` [PATCH 1/3] virtio-serial: virtio device for simple host <-> guest communication Amit Shah
     [not found]   ` <1248717876-17630-3-git-send-email-amit.shah@redhat.com>
2009-07-27 18:04     ` [PATCH 2/3] vnc: add a is_vnc_active() helper Amit Shah
     [not found]     ` <1248717876-17630-4-git-send-email-amit.shah@redhat.com>
2009-07-27 18:04       ` [PATCH 3/3] virtio-serial: vnc: support for sending / receiving guest clipboard Amit Shah
2009-08-05  0:03   ` [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Rusty Russell
     [not found]   ` <200908050933.42709.rusty@rustcorp.com.au>
2009-08-05  5:12     ` Amit Shah
2009-08-05  9:58     ` Amit Shah

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