[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communic
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication |
Date: |
Wed, 29 Jul 2009 10:48:27 +0300 |
On Wed, Jul 29, 2009 at 01:14:18PM +0530, Amit Shah wrote:
> On (Tue) Jul 28 2009 [08:42:32], Anthony Liguori wrote:
> > Amit Shah wrote:
> >> Right; use virtio just as the transport and all the interesting
> >> activity happens in userspaces. That was the basis with which I started.
> >> I can imagine dbus doing the copy/paste, lock screen, etc. actions.
> >>
> >> However for libguestfs, dbus isn't an option and they already have some
> >> predefined agents for each port. So libguestfs is an example for a
> >> multi-port usecase for virtio-serial.
> >>
> >
> > Or don't use dbus and use something that libguestfs is able to embed.
> > The fact that libguestfs doesn't want dbus in the guest is not an
> > argument for using a higher level kernel interface especially one that
> > doesn't meet the requirements of the interface.
>
> But why do we want to limit the device to only one port? It's not too
> complex supporting additional ones.
>
> As I see it qemu and the kernel should provide the basic abstraction for
> the userspace to go do its job. Why create unnecessary barriers?
>
I agree. If userspace wants it may use only one channel and demultiplex
messages by itself, but we shouldn't force it to. Also one of the
requirements for virtio-serial is to have connect disconnect
notifications. It is not possible with demultiplexing in the userspace.
--
Gleb.
- [Qemu-devel] [PATCH 1/3] virtio-serial: virtio device for simple host <-> guest communication, (continued)
[Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Anthony Liguori, 2009/07/27
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Daniel P. Berrange, 2009/07/27
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Anthony Liguori, 2009/07/27
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Jamie Lokier, 2009/07/27
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Anthony Liguori, 2009/07/27
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Amit Shah, 2009/07/28
- Message not available
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Amit Shah, 2009/07/29
- Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication,
Gleb Natapov <=
Message not availableRe: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Anthony Liguori, 2009/07/28
Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Richard W.M. Jones, 2009/07/28
Re: [Qemu-devel] Re: virtio-serial: An interface for host-guest communication, Anthony Liguori, 2009/07/28