From: Gerd Hoffmann <kraxel@redhat.com>
To: marcandre.lureau@redhat.com
Cc: qemu-devel@nongnu.org
Subject: Re: [PATCH v2 00/37] Add D-Bus display backend
Date: Wed, 13 Oct 2021 07:22:14 +0200 [thread overview]
Message-ID: <20211013052214.stif2dodyueetm3p@sirius.home.kraxel.org> (raw)
In-Reply-To: <20211009210838.2219430-1-marcandre.lureau@redhat.com>
On Sun, Oct 10, 2021 at 01:08:01AM +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> Hi,
>
> Both Spice and VNC are relatively complex and inefficient for local-only
> display/console export.
>
> The goal of this display backend is to export over D-Bus an interface close to
> the QEMU internal APIs. Any -display or -audio backend should be possible to
> implement externally that way. It will allow third-parties to maintain their own
> backends (UI toolkits, servers etc), and eventually reduce the responsability on
> QEMU.
>
> D-Bus is the protocol of choice for the desktop, it has many convenient bindings
> for various languages and tools. Data blob transfer is more efficient than QMP
> too. Backends can come and go as needed: you can have several display opened
> (say Boxes & virt-manager), while exporting the display over VNC for example
> from a different process. It works best on Unix, but there is some Windows
> support too (even Windows has some AF_UNIX nowadays, and the WSL2 situation may
> change the future of QEMU on Windows anyway).
>
> Using it only requires "-display dbus" on any reasonable Linux desktop with a
> D-Bus session bus. Then you use can use busctl, d-feet or gdbus, ex:
> $ gdbus introspect --session -r -d org.qemu -o /
>
> See the different patches and documentation for further options. The p2p=on mode
> should also allow users running bus-less (on MacOS for ex). We can also add TCP
> socket if needed (although more work would be needed in this case to replace
> the FD-passing with some extra TCP listening socket).
Wow. That series got a lot of fine tuning. The patches look all good
to me.
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> A WIP Rust/Gtk4 client and VNC server is: https://gitlab.com/marcandre.lureau/qemu-display/
> (check README.md for details, then `cargo run` should connect to QEMU)
Hmm, that wants rather cutting edge versions, stock Fedora 34 isn't new
enough to build it. And I don't feel like updating to Fedora 35 beta
for that. So unfortunately I couldn't easily test it, but I'd love to
see that live in action.
Is it possible to keep the client running while starting and stopping
qemu (comparable to "virt-viewer --wait --reconnect" behaviour)?
take care,
Gerd
next prev parent reply other threads:[~2021-10-13 5:23 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-09 21:08 [PATCH v2 00/37] Add D-Bus display backend marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 01/37] build-sys: move Spice configure handling to meson marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 02/37] ui/vdagent: add CHECK_SPICE_PROTOCOL_VERSION marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 03/37] ui/vdagent: replace #if 0 with protocol version check marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 04/37] ui: generalize clipboard notifier marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 05/37] ui/vdagent: add serial capability support marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 06/37] ui/clipboard: add qemu_clipboard_check_serial() marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 07/37] ui/clipboard: add a clipboard reset serial event marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 08/37] hw/display: report an error if virgl initialization failed marcandre.lureau
2021-12-17 12:40 ` Philippe Mathieu-Daudé
2021-10-09 21:08 ` [PATCH v2 09/37] virtio-gpu: use VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP marcandre.lureau
2021-12-17 12:51 ` Philippe Mathieu-Daudé
2021-10-09 21:08 ` [PATCH v2 10/37] ui: do not delay further remote resize marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 11/37] ui: factor out qemu_console_set_display_gl_ctx() marcandre.lureau
2021-12-17 13:36 ` Philippe Mathieu-Daudé
2021-10-09 21:08 ` [PATCH v2 12/37] ui: associate GL context outside of display listener registration marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 13/37] ui: make gl_block use a counter marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 14/37] ui: add a gl-unblock warning timer marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 15/37] ui: simplify gl unblock & flush marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 16/37] ui: dispatch GL events to all listeners marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 17/37] ui: split the GL context in a different object marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 18/37] ui: move qemu_spice_fill_device_address to ui/util.c marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 19/37] console: save current scanout details marcandre.lureau
2022-01-11 3:29 ` Akihiko Odaki
2022-01-11 8:23 ` Marc-André Lureau
2022-01-11 12:45 ` Akihiko Odaki
2021-10-09 21:08 ` [PATCH v2 20/37] scripts: teach modinfo to skip non-C sources marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 21/37] docs/sphinx: add sphinx modules to include D-Bus documentation marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 22/37] backends: move dbus-vmstate1.xml to backends/ marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 23/37] docs: move D-Bus VMState documentation to source XML marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 24/37] docs: add dbus-display documentation marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 25/37] build-sys: set glib dependency version marcandre.lureau
2021-12-17 13:27 ` Philippe Mathieu-Daudé
2021-12-17 13:40 ` Marc-André Lureau
2021-12-17 14:36 ` Philippe Mathieu-Daudé
2021-10-09 21:08 ` [PATCH v2 26/37] ui: add a D-Bus display backend marcandre.lureau
2021-10-13 8:59 ` Marc-André Lureau
2021-10-09 21:08 ` [PATCH v2 27/37] ui/dbus: add p2p=on/off option marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 28/37] tests/qtests: add qtest_qmp_add_client() marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 29/37] tests: start dbus-display-test marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 30/37] audio: add "dbus" audio backend marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 31/37] ui/dbus: add clipboard interface marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 32/37] chardev: teach socket to accept no addresses marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 33/37] chardev: make socket derivable marcandre.lureau
2021-12-17 13:32 ` Philippe Mathieu-Daudé
2021-10-09 21:08 ` [PATCH v2 34/37] option: add g_auto for QemuOpts marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 35/37] ui/dbus: add chardev backend & interface marcandre.lureau
2021-10-09 21:08 ` [PATCH v2 36/37] ui/dbus: register D-Bus VC handler marcandre.lureau
2021-12-17 13:35 ` Philippe Mathieu-Daudé
2021-12-17 14:21 ` Marc-André Lureau
2021-10-09 21:08 ` [PATCH v2 37/37] MAINTAINERS: update D-Bus section marcandre.lureau
2021-10-13 5:22 ` Gerd Hoffmann [this message]
2021-12-16 20:53 ` [PATCH v2 00/37] Add D-Bus display backend Marc-André Lureau
2021-12-17 7:05 ` Gerd Hoffmann
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