Hi,
vhost-user allows to drive a virtio device in a seperate
process. After vhost-user-net, we have seen
vhost-user-{scsi,blk,crypto} added more recently.
This series, initially proposed 2 years ago
(https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg01905.html)
contributes with vhost-user-input and vhost-user-gpu.
Additionally, to factor out common code and ease the usage, a
vhost-user-backend is introduced as an intermediary object between the
backend and the qemu device.
You may start a vhost-user-gpu with virgl rendering in a separate
process like this:
$ ./vhost-user-gpu --virgl -s vgpu.sock &
$ qemu...
-chardev socket,id=chr,path=vgpu.sock
-object vhost-user-backend,id=vug,chardev=chr
-device vhost-user-vga,vhost-user=vug
You may also specify the backend command and the arguments as part of
vhost-user-backend qemu arguments. For example, to start a
vhost-user-input backend on input device /dev/input/event19:
-object vhost-user-backend,id=vuid,cmd="vhost-user-input /dev/input/event19"
-device virtio-input-host-pci,vhost-user=vuid
The vhost-user-gpu backend requires virgl from git.
The libvirt support is on-going work:
https://github.com/elmarco/libvirt/commits/vhost-user-gpu
The GPU benchmarks are encouraging, giving up to x5 performance on
Unigine Heaven 4.0.
Feedback welcome,
v4:
- move qemu_write_pidfile() in util, improve it a bit
- add --pid and --fd arguments to vhost-user to help with libvirt support
- various bug fixes for synchronization, and tearing down
v3: deal with most comments from rfcv2 and various improvements
- "vhost-user-backend: allow to specify binary to execute" as seperate
patch, not for inclusion since Daniel as concerned about parsing
shell strings with glib
- use dmabuf to share 2d rendering result (with intel gem only atm)
- document the vhost-user-gpu protocol
- make vhost-user-gpu-pci and vhost-user-vga seperate devices (instead
of adding vhost-user support to existing devices)
- allow to specify virgl rendering, and rendernode
- let's promote out of RFC status :)
RFCv2: (addressing some of Gerd comments digged in the archives)
- rebased, clean ups, various small fixes, update commit messages
- teach the vhost-user-backend to take a chardev
- add vhost-user-input-pci, instead of adding vhost code to
virtio-input-host-pci
Marc-André Lureau (29):
chardev: avoid crash if no associated address
chardev: remove qemu_chr_fe_read_all() counter
chardev: unref if underlying chardev has no parent
dmabuf: add y0_top, pass it to spice
vhost-user: simplify vhost_user_init/vhost_user_cleanup
libvhost-user: exit by default on VHOST_USER_NONE
vhost-user: wrap some read/write with retry handling
Add vhost-user-backend
qio: add qio_channel_command_new_spawn_with_pre_exec()
HACK: vhost-user-backend: allow to specify binary to execute
vhost-user: split vhost_user_read()
vhost-user: add vhost_user_input_get_config()
libvhost-user: export vug_source_new()
contrib: add vhost-user-input
Add vhost-user-input-pci
vhost-user: add vhost_user_gpu_set_socket()
vhost-user: add vhost_user_gpu_get_num_capsets()
virtio: add virtio-gpu bswap helpers header
util: promote qemu_egl_rendernode_open() to libqemuutil
util: add qemu_write_pidfile()
util: use fcntl() for qemu_write_pidfile() locking
contrib: add vhost-user-gpu
virtio-gpu: remove unused qdev
virtio-gpu: remove unused config_size
virtio-gpu: block both 2d and 3d rendering
virtio-gpu: remove useless 'waiting' field
virtio-gpu: split virtio-gpu, introduce virtio-gpu-base
virtio-gpu: split virtio-gpu-pci & virtio-vga
hw/display: add vhost-user-vga & gpu-pci
contrib/libvhost-user/libvhost-user-glib.h | 3 +
contrib/libvhost-user/libvhost-user.h | 3 +
contrib/vhost-user-gpu/drm.h | 63 ++
contrib/vhost-user-gpu/virgl.h | 25 +
contrib/vhost-user-gpu/vugpu.h | 168 +++
hw/display/virtio-vga.h | 22 +
hw/virtio/virtio-pci.h | 27 +-
include/hw/virtio/vhost-backend.h | 6 +
include/hw/virtio/vhost-user-blk.h | 2 +-
include/hw/virtio/vhost-user-scsi.h | 2 +-
include/hw/virtio/vhost-user.h | 2 +-
include/hw/virtio/virtio-gpu-bswap.h | 61 +
include/hw/virtio/virtio-gpu.h | 90 +-
include/hw/virtio/virtio-input.h | 14 +
include/io/channel-command.h | 18 +
include/qemu/drm.h | 6 +
include/qemu/osdep.h | 3 +-
include/sysemu/vhost-user-backend.h | 60 +
include/ui/console.h | 1 +
backends/cryptodev-vhost-user.c | 18 +-
backends/vhost-user.c | 320 ++++++
chardev/char-fe.c | 13 +-
chardev/char-socket.c | 8 +-
contrib/libvhost-user/libvhost-user-glib.c | 15 +-
contrib/libvhost-user/libvhost-user.c | 3 +-
contrib/vhost-user-gpu/drm.c | 190 ++++
contrib/vhost-user-gpu/main.c | 1164 ++++++++++++++++++++
contrib/vhost-user-gpu/virgl.c | 579 ++++++++++
contrib/vhost-user-input/main.c | 379 +++++++
hw/block/vhost-user-blk.c | 22 +-
hw/display/vhost-user-gpu-pci.c | 51 +
hw/display/vhost-user-gpu.c | 524 +++++++++
hw/display/vhost-user-vga.c | 52 +
hw/display/virtio-gpu-3d.c | 70 +-
hw/display/virtio-gpu-base.c | 292 +++++
hw/display/virtio-gpu-pci.c | 39 +-
hw/display/virtio-gpu.c | 368 ++-----
hw/display/virtio-vga.c | 127 ++-
hw/input/vhost-user-input.c | 110 ++
hw/scsi/vhost-user-scsi.c | 20 +-
hw/virtio/vhost-stub.c | 4 +-
hw/virtio/vhost-user.c | 143 ++-
hw/virtio/virtio-pci.c | 20 +
io/channel-command.c | 33 +-
net/vhost-user.c | 13 +-
os-posix.c | 24 -
os-win32.c | 25 -
qga/main.c | 54 +-
scsi/qemu-pr-helper.c | 40 +-
ui/egl-helpers.c | 51 +-
ui/spice-display.c | 3 +-
util/drm.c | 66 ++
util/oslib-posix.c | 39 +
util/oslib-win32.c | 27 +
vl.c | 8 +-
MAINTAINERS | 15 +-
Makefile | 6 +
Makefile.objs | 2 +
backends/Makefile.objs | 3 +-
configure | 35 +
contrib/vhost-user-gpu/Makefile.objs | 10 +
contrib/vhost-user-input/Makefile.objs | 1 +
docs/interop/vhost-user-gpu.rst | 236 ++++
docs/interop/vhost-user.txt | 24 +
hw/display/Makefile.objs | 5 +-
hw/input/Makefile.objs | 1 +
qemu-options.hx | 24 +
util/Makefile.objs | 1 +
68 files changed, 5130 insertions(+), 723 deletions(-)
create mode 100644 contrib/vhost-user-gpu/drm.h
create mode 100644 contrib/vhost-user-gpu/virgl.h
create mode 100644 contrib/vhost-user-gpu/vugpu.h
create mode 100644 hw/display/virtio-vga.h
create mode 100644 include/hw/virtio/virtio-gpu-bswap.h
create mode 100644 include/qemu/drm.h
create mode 100644 include/sysemu/vhost-user-backend.h
create mode 100644 backends/vhost-user.c
create mode 100644 contrib/vhost-user-gpu/drm.c
create mode 100644 contrib/vhost-user-gpu/main.c
create mode 100644 contrib/vhost-user-gpu/virgl.c
create mode 100644 contrib/vhost-user-input/main.c
create mode 100644 hw/display/vhost-user-gpu-pci.c
create mode 100644 hw/display/vhost-user-gpu.c
create mode 100644 hw/display/vhost-user-vga.c
create mode 100644 hw/display/virtio-gpu-base.c
create mode 100644 hw/input/vhost-user-input.c
create mode 100644 util/drm.c
create mode 100644 contrib/vhost-user-gpu/Makefile.objs
create mode 100644 contrib/vhost-user-input/Makefile.objs
create mode 100644 docs/interop/vhost-user-gpu.rst
--
2.18.0.129.ge3331758f1
