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 ~3 years ago, time flies (https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg01905.html) contributes with vhost-user-input and vhost-user-gpu. 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 -device vhost-user-vga,chardev=chr v6: - do not install vhost-user-input - install vhost-user-gpu and json file following the spec - fix the build when drm-intel-devel missing - rebase (& resend without already applied patches) v5: - remove user-creatable version of vhost-user-backend - remove optinal management of sub-process in vhost-user-backend - removed daemonize/pid code - drop introduction of new input & gpu messages for PCI config space handling, instead use VHOST_USER_PROTOCOL_F_CONFIG - plain mem & udmabuf fallback for 2d rendering - rebased, kconfig-ify, rst-ify Marc-André Lureau (11): Add vhost-user-backend Add vhost-user-input-pci libvhost-user: add PROTOCOL_F_CONFIG if {set,get}_config contrib: add vhost-user-input vhost-user: add vhost_user_gpu_set_socket() virtio: add virtio-gpu bswap helpers header util: compile drm.o on Linux contrib: add vhost-user-gpu 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.h | 1 + contrib/vhost-user-gpu/drm.h | 72 ++ contrib/vhost-user-gpu/virgl.h | 25 + contrib/vhost-user-gpu/vugpu.h | 170 +++ hw/display/virtio-vga.h | 32 + include/hw/virtio/vhost-backend.h | 2 + include/hw/virtio/virtio-gpu-bswap.h | 61 + include/hw/virtio/virtio-gpu-pci.h | 40 + include/hw/virtio/virtio-gpu.h | 92 +- include/hw/virtio/virtio-input.h | 14 + include/sysemu/vhost-user-backend.h | 57 + backends/vhost-user.c | 209 ++++ contrib/libvhost-user/libvhost-user.c | 5 + contrib/vhost-user-gpu/drm.c | 341 ++++++ contrib/vhost-user-gpu/main.c | 1236 ++++++++++++++++++++ contrib/vhost-user-gpu/virgl.c | 579 +++++++++ contrib/vhost-user-input/main.c | 427 +++++++ hw/display/vhost-user-gpu-pci.c | 51 + hw/display/vhost-user-gpu.c | 572 +++++++++ hw/display/vhost-user-vga.c | 52 + hw/display/virtio-gpu-3d.c | 49 +- hw/display/virtio-gpu-base.c | 268 +++++ hw/display/virtio-gpu-pci.c | 55 +- hw/display/virtio-gpu.c | 415 ++----- hw/display/virtio-vga.c | 138 +-- hw/input/vhost-user-input.c | 129 ++ hw/virtio/vhost-user-input-pci.c | 53 + hw/virtio/vhost-user.c | 11 + vl.c | 1 + MAINTAINERS | 14 +- Makefile | 27 +- Makefile.objs | 2 + backends/Makefile.objs | 2 + configure | 29 + contrib/vhost-user-gpu/50-qemu-gpu.json.in | 5 + contrib/vhost-user-gpu/Makefile.objs | 10 + contrib/vhost-user-input/Makefile.objs | 1 + docs/interop/index.rst | 2 +- docs/interop/vhost-user-gpu.rst | 238 ++++ docs/interop/vhost-user.txt | 9 + hw/display/Kconfig | 10 + hw/display/Makefile.objs | 5 +- hw/input/Kconfig | 5 + hw/input/Makefile.objs | 1 + hw/virtio/Makefile.objs | 1 + rules.mak | 9 +- util/Makefile.objs | 2 +- 47 files changed, 5070 insertions(+), 459 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/hw/virtio/virtio-gpu-pci.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 hw/virtio/vhost-user-input-pci.c create mode 100644 contrib/vhost-user-gpu/50-qemu-gpu.json.in 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 -- 2.21.0.313.ge35b8cb8e2