From: Gerd Hoffmann <kraxel@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: kvm@vger.kernel.org, "Richard W.M. Jones" <rjones@redhat.com>,
Rusty Russell <rusty@rustcorp.com.au>,
qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org,
Amit Shah <amit.shah@redhat.com>
Subject: Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication
Date: Mon, 10 Aug 2009 17:57:25 +0200 [thread overview]
Message-ID: <4A804365.6010106@redhat.com> (raw)
In-Reply-To: <4A802E35.1040308@codemonkey.ws>
On 08/10/09 16:27, Anthony Liguori wrote:
> I think my fundamental argument boils down to two points. 1) we should
> not require new guest drivers unless we absolutely have to
Allow guest drivers is fine though I guess?
> 2) we should
> always do things in userspace unless we absolutely have to do things in
> the kernel.
Wrong. There are often good reasons to do stuff in kernel, even if you
can do it in userspace too.
> Adding new kernel drivers breaks support for enterprise Linux distros.
> Adding a userspace daemon does not. Windows device drivers require
> signing which is very difficult to do. There's a huge practical
> advantage in not requiring guest drivers.
Ok, so the virtio-serial + usbserial combo should work well then I think.
If you have guest drivers you'll go the virtio-serial route.
If you don't have guest drivers you can go the usbserial route, either
via /dev/ttyUSB or via libusb.
We can also have a libvmchannel as abstraction layer on top of this.
cheers,
Gerd
next prev parent reply other threads:[~2009-08-10 15:57 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-27 18:04 [Qemu-devel] virtio-serial: An interface for host-guest communication Amit Shah
2009-07-27 18:04 ` [Qemu-devel] [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Amit Shah
2009-07-27 18:04 ` [Qemu-devel] [PATCH 1/3] virtio-serial: virtio device for simple host <-> guest communication Amit Shah
2009-07-27 18:04 ` [Qemu-devel] [PATCH 2/3] vnc: add a is_vnc_active() helper Amit Shah
2009-07-27 18:04 ` [Qemu-devel] [PATCH 3/3] virtio-serial: vnc: support for sending / receiving guest clipboard Amit Shah
2009-08-05 0:03 ` [Qemu-devel] Re: [PATCH 1/1] virtio_serial: A char device for simple guest <-> host communication Rusty Russell
2009-08-05 5:12 ` Amit Shah
2009-08-05 9:58 ` Amit Shah
2009-07-27 20:22 ` [Qemu-devel] Re: virtio-serial: An interface for host-guest communication Anthony Liguori
2009-07-27 20:32 ` Daniel P. Berrange
2009-07-27 20:37 ` Anthony Liguori
2009-07-27 20:46 ` Jamie Lokier
2009-07-27 23:44 ` Anthony Liguori
2009-07-28 10:36 ` Amit Shah
[not found] ` <4A6F0048.1000103@codemonkey.ws>
2009-07-29 7:44 ` Amit Shah
2009-07-29 7:48 ` Gleb Natapov
2009-08-05 18:00 ` Jamie Lokier
[not found] ` <20090728140029.GA16067@amd.home.annexia.org>
2009-07-28 14:48 ` Anthony Liguori
2009-07-28 14:55 ` Richard W.M. Jones
2009-07-28 15:00 ` Anthony Liguori
2009-08-03 19:57 ` Anthony Liguori
2009-08-05 17:57 ` Jamie Lokier
2009-08-05 18:00 ` Anthony Liguori
2009-08-06 10:38 ` Amit Shah
2009-08-06 13:29 ` Anthony Liguori
2009-08-06 13:41 ` Amit Shah
2009-08-06 13:58 ` Anthony Liguori
2009-08-06 14:04 ` Amit Shah
2009-08-06 17:37 ` Jamie Lokier
2009-08-07 6:38 ` Amit Shah
2009-08-07 14:14 ` Anthony Liguori
2009-08-10 6:55 ` Amit Shah
2009-08-10 9:47 ` Gerd Hoffmann
2009-08-10 13:02 ` Anthony Liguori
2009-08-10 14:02 ` Gerd Hoffmann
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 15:34 ` Gerd Hoffmann
2009-08-10 16:59 ` Anthony Liguori
2009-08-10 17:27 ` Anthony Liguori
2009-08-12 18:27 ` Paul Brook
2009-08-14 8:15 ` Amit Shah
2009-08-14 13:29 ` Anthony Liguori
2009-08-14 13:41 ` Amit Shah
2009-08-20 13:42 ` Amit Shah
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
2009-08-14 16:25 ` Anthony Liguori
2009-08-20 7:31 ` Rusty Russell
2009-08-20 7:44 ` Gerd Hoffmann
2009-08-20 7:55 ` Amit Shah
2009-08-20 17:10 ` Jamie Lokier
2009-08-25 12:43 ` Rusty Russell
2009-08-25 13:00 ` Gerd Hoffmann
2009-08-10 14:20 ` Anthony Liguori
2009-08-10 23:09 ` Rusty Russell
2009-08-11 0:16 ` Anthony Liguori
2009-08-10 14:27 ` Anthony Liguori
2009-08-10 15:57 ` Gerd Hoffmann [this message]
2009-08-06 10:35 ` Amit Shah
2009-08-05 18:32 ` Richard W.M. Jones
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