From: Gerd Hoffmann <kraxel@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Anthony Liguori <anthony@codemonkey.ws>,
Amit Shah <amit.shah@redhat.com>,
kvm@vger.kernel.org, qemu-devel@nongnu.org,
virtualization@lists.linux-foundation.org
Subject: Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication
Date: Thu, 20 Aug 2009 09:44:29 +0200 [thread overview]
Message-ID: <4A8CFEDD.4000009@redhat.com> (raw)
In-Reply-To: <200908201701.30467.rusty@rustcorp.com.au>
On 08/20/09 09:31, Rusty Russell wrote:
> On Sat, 15 Aug 2009 01:55:32 am Anthony Liguori wrote:
>> Gerd Hoffmann wrote:
>>> 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.
>> Or drops ports altogether and just use protocol strings...
>
> Both is silly, yes.
>
> I guess strings + HAL magic can make the /dev names sane. I don't want to
> see userspace trolling through sysfs to figure out what device to open.
udev can create sane /dev names (or symlinks) by checking sysfs
attributes, apps just open the /dev/whatever then.
> Which is why I prefer assigned numbers, which get mapped to minors.
ports map trivially to minors. When using protocol strings minors can
simply be dynamically auto-allocated by the guest and we don't need the
port numbers in the host<->guest protocol any more.
I think strings are better as numbers for identifying protocols as you
can work without a central registry for the numbers then.
cheers,
Gerd
WARNING: multiple messages have this Message-ID (diff)
From: Gerd Hoffmann <kraxel@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Amit Shah <amit.shah@redhat.com>,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication
Date: Thu, 20 Aug 2009 09:44:29 +0200 [thread overview]
Message-ID: <4A8CFEDD.4000009@redhat.com> (raw)
In-Reply-To: <200908201701.30467.rusty@rustcorp.com.au>
On 08/20/09 09:31, Rusty Russell wrote:
> On Sat, 15 Aug 2009 01:55:32 am Anthony Liguori wrote:
>> Gerd Hoffmann wrote:
>>> 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.
>> Or drops ports altogether and just use protocol strings...
>
> Both is silly, yes.
>
> I guess strings + HAL magic can make the /dev names sane. I don't want to
> see userspace trolling through sysfs to figure out what device to open.
udev can create sane /dev names (or symlinks) by checking sysfs
attributes, apps just open the /dev/whatever then.
> Which is why I prefer assigned numbers, which get mapped to minors.
ports map trivially to minors. When using protocol strings minors can
simply be dynamically auto-allocated by the guest and we don't need the
port numbers in the host<->guest protocol any more.
I think strings are better as numbers for identifying protocols as you
can work without a central registry for the numbers then.
cheers,
Gerd
next prev parent reply other threads:[~2009-08-20 7:44 UTC|newest]
Thread overview: 175+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-27 18:04 virtio-serial: An interface for host-guest communication Amit Shah
2009-07-27 18:04 ` [Qemu-devel] " Amit Shah
2009-07-27 18:04 ` [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Amit Shah
2009-07-27 18:04 ` Amit Shah
2009-07-27 18:04 ` [Qemu-devel] " Amit Shah
2009-07-27 18:04 ` [PATCH 1/3] virtio-serial: virtio device for simple host <-> guest communication Amit Shah
2009-07-27 18:04 ` Amit Shah
2009-07-27 18:04 ` [Qemu-devel] " Amit Shah
2009-07-27 18:04 ` [PATCH 2/3] vnc: add a is_vnc_active() helper Amit Shah
2009-07-27 18:04 ` Amit Shah
2009-07-27 18:04 ` [Qemu-devel] " Amit Shah
2009-07-27 18:04 ` [PATCH 3/3] virtio-serial: vnc: support for sending / receiving guest clipboard Amit Shah
2009-07-27 18:04 ` [Qemu-devel] " Amit Shah
2009-07-27 18:04 ` Amit Shah
2009-08-05 0:03 ` [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Rusty Russell
2009-08-05 0:03 ` Rusty Russell
2009-08-05 0:03 ` [Qemu-devel] " Rusty Russell
2009-08-05 5:12 ` Amit Shah
2009-08-05 5:12 ` [Qemu-devel] " Amit Shah
2009-08-05 9:58 ` Amit Shah
2009-08-05 9:58 ` [Qemu-devel] " Amit Shah
2009-08-05 9:58 ` Amit Shah
2009-07-27 20:22 ` virtio-serial: An interface for host-guest communication Anthony Liguori
2009-07-27 20:22 ` Anthony Liguori
2009-07-27 20:22 ` [Qemu-devel] " Anthony Liguori
2009-07-27 20:32 ` Daniel P. Berrange
2009-07-27 20:32 ` Daniel P. Berrange
2009-07-27 20:37 ` Anthony Liguori
2009-07-27 20:37 ` Anthony Liguori
2009-07-27 20:46 ` Jamie Lokier
2009-07-27 20:46 ` Jamie Lokier
2009-07-27 23:44 ` Anthony Liguori
2009-07-27 23:44 ` Anthony Liguori
2009-07-28 10:36 ` Amit Shah
2009-07-28 10:36 ` Amit Shah
2009-07-28 13:42 ` Anthony Liguori
2009-07-28 13:42 ` Anthony Liguori
2009-07-29 7:44 ` Amit Shah
2009-07-29 7:44 ` Amit Shah
2009-07-29 7:44 ` Amit Shah
2009-07-29 7:48 ` Gleb Natapov
2009-07-29 7:48 ` Gleb Natapov
2009-07-29 7:48 ` Gleb Natapov
2009-08-05 18:00 ` Jamie Lokier
2009-08-05 18:00 ` Jamie Lokier
2009-08-05 18:00 ` Jamie Lokier
2009-07-28 10:36 ` Amit Shah
2009-07-28 14:00 ` Richard W.M. Jones
2009-07-28 14:00 ` Richard W.M. Jones
2009-07-28 14:48 ` Anthony Liguori
2009-07-28 14:55 ` Richard W.M. Jones
2009-07-28 14:55 ` Richard W.M. Jones
2009-07-28 15:00 ` Anthony Liguori
2009-07-28 15:00 ` Anthony Liguori
2009-07-28 14:48 ` Anthony Liguori
2009-08-03 19:57 ` Anthony Liguori
2009-08-03 19:57 ` Anthony Liguori
2009-08-05 17:57 ` Jamie Lokier
2009-08-05 17:57 ` Jamie Lokier
2009-08-05 18:00 ` Anthony Liguori
2009-08-05 18:00 ` Anthony Liguori
2009-08-05 18:00 ` Anthony Liguori
2009-08-06 10:38 ` Amit Shah
2009-08-06 10:38 ` Amit Shah
2009-08-06 10:38 ` Amit Shah
2009-08-06 13:29 ` Anthony Liguori
2009-08-06 13:29 ` Anthony Liguori
2009-08-06 13:29 ` Anthony Liguori
2009-08-06 13:41 ` Amit Shah
2009-08-06 13:41 ` Amit Shah
2009-08-06 13:41 ` Amit Shah
2009-08-06 13:58 ` Anthony Liguori
2009-08-06 13:58 ` Anthony Liguori
2009-08-06 14:04 ` Amit Shah
2009-08-06 14:04 ` Amit Shah
2009-08-06 17:37 ` Jamie Lokier
2009-08-06 17:37 ` Jamie Lokier
2009-08-07 6:38 ` Amit Shah
2009-08-07 6:38 ` Amit Shah
2009-08-07 14:14 ` Anthony Liguori
2009-08-07 14:14 ` Anthony Liguori
2009-08-10 6:55 ` Amit Shah
2009-08-10 6:55 ` Amit Shah
2009-08-10 9:47 ` Gerd Hoffmann
2009-08-10 9:47 ` Gerd Hoffmann
2009-08-10 9:47 ` Gerd Hoffmann
2009-08-10 13:02 ` Anthony Liguori
2009-08-10 13:02 ` Anthony Liguori
2009-08-10 14:02 ` Gerd Hoffmann
2009-08-10 14:02 ` Gerd Hoffmann
2009-08-10 14:02 ` Gerd Hoffmann
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 15:34 ` Gerd Hoffmann
2009-08-10 15:34 ` Gerd Hoffmann
2009-08-10 16:59 ` Anthony Liguori
2009-08-10 16:59 ` Anthony Liguori
2009-08-10 17:27 ` Anthony Liguori
2009-08-10 17:27 ` Anthony Liguori
2009-08-10 17:27 ` Anthony Liguori
2009-08-12 18:27 ` Paul Brook
2009-08-12 18:27 ` Paul Brook
2009-08-12 18:27 ` Paul Brook
2009-08-14 8:15 ` Amit Shah
2009-08-14 8:15 ` Amit Shah
2009-08-14 8:15 ` Amit Shah
2009-08-14 13:29 ` Anthony Liguori
2009-08-14 13:29 ` Anthony Liguori
2009-08-14 13:41 ` Amit Shah
2009-08-14 13:41 ` Amit Shah
2009-08-14 13:41 ` Amit Shah
2009-08-20 13:42 ` Amit Shah
2009-08-20 13:42 ` Amit Shah
2009-08-20 13:42 ` Amit Shah
2009-08-20 14:25 ` Daniel P. Berrange
2009-08-20 14:25 ` Daniel P. Berrange
2009-08-20 14:38 ` Amit Shah
2009-08-20 14:38 ` Amit Shah
2009-08-20 14:42 ` Amit Shah
2009-08-20 14:42 ` Amit Shah
2009-08-20 14:42 ` Amit Shah
2009-08-14 13:29 ` Anthony Liguori
2009-08-14 13:49 ` Gerd Hoffmann
2009-08-14 13:49 ` Gerd Hoffmann
2009-08-14 16:25 ` Anthony Liguori
2009-08-14 16:25 ` Anthony Liguori
2009-08-14 16:25 ` Anthony Liguori
2009-08-20 7:31 ` Rusty Russell
2009-08-20 7:31 ` Rusty Russell
2009-08-20 7:44 ` Gerd Hoffmann [this message]
2009-08-20 7:44 ` Gerd Hoffmann
2009-08-20 7:55 ` Amit Shah
2009-08-20 7:55 ` Amit Shah
2009-08-20 17:10 ` Jamie Lokier
2009-08-20 17:10 ` Jamie Lokier
2009-08-20 17:10 ` Jamie Lokier
2009-08-20 7:55 ` Amit Shah
2009-08-25 12:43 ` Rusty Russell
2009-08-25 12:43 ` Rusty Russell
2009-08-25 12:43 ` Rusty Russell
2009-08-25 13:00 ` Gerd Hoffmann
2009-08-25 13:00 ` Gerd Hoffmann
2009-08-25 13:00 ` Gerd Hoffmann
2009-08-20 7:44 ` Gerd Hoffmann
2009-08-20 7:31 ` Rusty Russell
2009-08-10 16:59 ` Anthony Liguori
2009-08-10 15:34 ` Gerd Hoffmann
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 13:02 ` Anthony Liguori
2009-08-10 23:09 ` Rusty Russell
2009-08-10 23:09 ` Rusty Russell
2009-08-10 23:09 ` Rusty Russell
2009-08-11 0:16 ` Anthony Liguori
2009-08-11 0:16 ` Anthony Liguori
2009-08-11 0:16 ` Anthony Liguori
2009-08-10 14:27 ` Anthony Liguori
2009-08-10 14:27 ` Anthony Liguori
2009-08-10 15:57 ` Gerd Hoffmann
2009-08-10 15:57 ` Gerd Hoffmann
2009-08-10 15:57 ` Gerd Hoffmann
2009-08-07 6:38 ` Amit Shah
2009-08-06 17:37 ` Jamie Lokier
2009-08-06 14:04 ` Amit Shah
2009-08-06 13:58 ` Anthony Liguori
2009-08-06 10:35 ` Amit Shah
2009-08-06 10:35 ` Amit Shah
2009-08-06 10:35 ` Amit Shah
2009-08-05 17:57 ` Jamie Lokier
2009-08-05 18:32 ` Richard W.M. Jones
2009-08-05 18:32 ` Richard W.M. Jones
2009-07-27 23:44 ` Anthony Liguori
2009-07-27 20:46 ` Jamie Lokier
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