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[Qemu-devel] [RFC 00/14] vhost-user backends for gpu & input virtio devi
From: |
marcandre . lureau |
Subject: |
[Qemu-devel] [RFC 00/14] vhost-user backends for gpu & input virtio devices |
Date: |
Sat, 4 Jun 2016 23:33:09 +0200 |
From: Marc-André Lureau <address@hidden>
Hi,
vhost-user allows to drive a virtio device in a seperate process. So
far, it has been mainly used with virtio-net. It can work with other
devices such as input and gpu, as shown in this series.
Some of the benefits of using vhost-user are:
- parallelism, since the backend is running in a different process
- flexibility, since backends may be implemented by various parties
- some process isolation (virgl is fairly recent project and a lot of
security issues have been found, opengl isn't super safe either and it
may run on closed-source and large gl libraries), although having a
limited access to guest memory could be safer.
You can run the vhost-user-gpu backend with spice only (since
importing dmabuf requires an egl context, it's not easy to do it with
sdl/gtk ui), it provides the basic cursor/2d/3d rendering, but lacks
some features (such as resize):
-object vhost-user-backend,id=vug,cmd="./vhost-user-gpu"
-device virtio-vga,virgl=true,vhost-user=vug
-spice disable-ticketing,gl=on,unix,addr=/tmp/spice.soc
As for vhost-user-input, it takes an input device path:
-object vhost-user-backend,id=vuid,cmd="vhost-user-input /dev/input/event0"
-device virtio-input-host-pci,vhost-user=vuid
This is based on top of libvhost-user series sent earlier on ML. For
convenience, the branch is also available on github:
https://github.com/elmarco/qemu/ vhost-user-gpu
Comments welcome!
Marc-André Lureau (14):
Add qemu_chr_open_socket()
Add vhost-user-backend
vhost-user: split vhost_user_read()
vhost-user: add vhost_user_input_get_config()
Add vhost-user backend to virtio-input-host
contrib: add vhost-user-input
misc: rename virtio-gpu.h header guard
vhost: make sure call fd has been received
qemu-char: use READ_RETRIES
qemu-char: block during sync read
console: add dpy_gl_scanout2()
contrib: add vhost-user-gpu
vhost-user: add vhost_user_gpu_set_socket()
Add virtio-gpu vhost-user backend
Makefile | 6 +
Makefile.objs | 2 +
backends/Makefile.objs | 2 +
backends/vhost-user.c | 262 +++++++++
configure | 5 +
contrib/libvhost-user/libvhost-user.h | 1 +
contrib/vhost-user-gpu/Makefile.objs | 7 +
contrib/vhost-user-gpu/main.c | 1012 ++++++++++++++++++++++++++++++++
contrib/vhost-user-gpu/virgl.c | 545 +++++++++++++++++
contrib/vhost-user-gpu/virgl.h | 24 +
contrib/vhost-user-gpu/vugpu.h | 155 +++++
contrib/vhost-user-input/Makefile.objs | 1 +
contrib/vhost-user-input/main.c | 369 ++++++++++++
docs/specs/vhost-user.txt | 9 +
hw/display/Makefile.objs | 2 +-
hw/display/vhost-gpu.c | 264 +++++++++
hw/display/virtio-gpu-pci.c | 6 +
hw/display/virtio-gpu.c | 75 ++-
hw/display/virtio-vga.c | 5 +
hw/input/virtio-input-host.c | 67 ++-
hw/input/virtio-input.c | 4 +
hw/virtio/vhost-user.c | 97 ++-
hw/virtio/vhost.c | 5 +
hw/virtio/virtio-pci.c | 5 +
include/hw/virtio/vhost-backend.h | 5 +
include/hw/virtio/virtio-gpu.h | 11 +-
include/hw/virtio/virtio-input.h | 2 +
include/sysemu/char.h | 2 +
include/sysemu/vhost-user-backend.h | 65 ++
include/ui/console.h | 10 +
qemu-char.c | 43 +-
ui/console.c | 12 +
ui/spice-display.c | 19 +
33 files changed, 3073 insertions(+), 26 deletions(-)
create mode 100644 backends/vhost-user.c
create mode 100644 contrib/vhost-user-gpu/Makefile.objs
create mode 100644 contrib/vhost-user-gpu/main.c
create mode 100644 contrib/vhost-user-gpu/virgl.c
create mode 100644 contrib/vhost-user-gpu/virgl.h
create mode 100644 contrib/vhost-user-gpu/vugpu.h
create mode 100644 contrib/vhost-user-input/Makefile.objs
create mode 100644 contrib/vhost-user-input/main.c
create mode 100644 hw/display/vhost-gpu.c
create mode 100644 include/sysemu/vhost-user-backend.h
--
2.7.4
- [Qemu-devel] [RFC 00/14] vhost-user backends for gpu & input virtio devices,
marcandre . lureau <=
- [Qemu-devel] [RFC 02/14] Add vhost-user-backend, marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 03/14] vhost-user: split vhost_user_read(), marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 01/14] Add qemu_chr_open_socket(), marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 07/14] misc: rename virtio-gpu.h header guard, marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 04/14] vhost-user: add vhost_user_input_get_config(), marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 09/14] qemu-char: use READ_RETRIES, marcandre . lureau, 2016/06/04
- [Qemu-devel] [RFC 11/14] console: add dpy_gl_scanout2(), marcandre . lureau, 2016/06/04