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,input} 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-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 v8: - document protocol bitmaps format, with pixman format - rebased, fixing a few conflicts v7: - add "framed" replies to the vhost-user-gpu protocol - use GBM library instead of drm-vendor APIs - added "virtio-gpu: add a pixman helper header" 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 (8): vhost-user: add vhost_user_gpu_set_socket() virtio-gpu: add bswap helpers header virtio-gpu: add a pixman helper 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 configure | 17 + contrib/libvhost-user/libvhost-user.h | 1 + contrib/vhost-user-gpu/virgl.h | 25 + contrib/vhost-user-gpu/vugbm.h | 67 ++ contrib/vhost-user-gpu/vugpu.h | 177 +++ 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-pixman.h | 45 + include/hw/virtio/virtio-gpu.h | 92 +- contrib/libvhost-user/libvhost-user.c | 1 + contrib/vhost-user-gpu/main.c | 1185 ++++++++++++++++++++ contrib/vhost-user-gpu/virgl.c | 579 ++++++++++ contrib/vhost-user-gpu/vugbm.c | 331 ++++++ hw/display/vhost-user-gpu-pci.c | 51 + hw/display/vhost-user-gpu.c | 607 ++++++++++ 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 | 444 ++------ hw/display/virtio-vga.c | 138 +-- hw/virtio/vhost-user.c | 11 + vl.c | 1 + MAINTAINERS | 10 +- Makefile | 24 +- Makefile.objs | 1 + contrib/vhost-user-gpu/50-qemu-gpu.json.in | 5 + contrib/vhost-user-gpu/Makefile.objs | 10 + docs/interop/index.rst | 1 + docs/interop/vhost-user-gpu.rst | 242 ++++ docs/interop/vhost-user.rst | 9 + hw/display/Kconfig | 10 + hw/display/Makefile.objs | 5 +- rules.mak | 9 +- util/Makefile.objs | 2 +- 37 files changed, 4175 insertions(+), 484 deletions(-) create mode 100644 contrib/vhost-user-gpu/virgl.h create mode 100644 contrib/vhost-user-gpu/vugbm.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/hw/virtio/virtio-gpu-pixman.h 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/vugbm.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 contrib/vhost-user-gpu/50-qemu-gpu.json.in create mode 100644 contrib/vhost-user-gpu/Makefile.objs create mode 100644 docs/interop/vhost-user-gpu.rst -- 2.22.0.rc1.1.g079e7d2849.dirty