[PATCH 00/19] Add vhost-user-gpu support

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From: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>

Hi,

This series of patches adds support for running virtio GPUs in
seperate processes, thanks to vhost-user backend.

The QEMU support landed for 4.1. There are several benefits of running
the GPU/virgl in an external process, since Mesa is rather heavy on
the qemu main loop, and may block for a while, or crash.

The external GPU process is started with one end of a socket pair, the
other end is given to a QEMU chardev attached to a device. The
external process is also added to the cgroup to limit resources usage.

Thanks

Since RFC:
- discover helpers following the vhost-user spec
- change vhost-user <video> model for a vhostuser attribute
- add a patch to specify the rendernode on <accel>
- change the way command line is built, following qemu series changes
- socket labeling
- a few cleanup patches
- rebased

Marc-André Lureau (19):
  device-conf: removed unneeded virDomainDeviceInfoCopy()
  tpm: minor argument comment fix
  qemu_firmware: only set nfeatures on success
  qemu: extract out qemuFetchConfigs from firmware
  domain: add "vhostuser" attribute to virtio video model
  domain: add rendernode attribute on <accel>
  qemu-cgroup: allow accel rendernode access
  qemu: add vhost-user-gpu capabilities checks
  qemu: check that qemu is vhost-user-vga capable
  qemu: validate virtio-gpu with vhost-user
  qemu: restrict 'virgl=' option to non-vhostuser video type
  qemu: add vhost-user helpers
  qemu: add qemuSecurityStartVhostUserGPU helper
  qemu: add vhost-user-gpu helper unit
  qemu: prepare domain for vhost-user GPU
  qemu: start/stop the vhost-user-gpu external device
  qemu: build vhost-user GPU devices
  tests: mock execv/execve
  tests: add vhost-user-gpu xml2argv tests

 docs/formatdomain.html.in                     |  11 +
 docs/schemas/domaincommon.rng                 |  16 +-
 src/conf/device_conf.c                        |  22 +-
 src/conf/device_conf.h                        |   4 +-
 src/conf/domain_conf.c                        |  33 +-
 src/conf/domain_conf.h                        |   2 +
 src/libvirt_private.syms                      |   1 -
 src/qemu/Makefile.inc.am                      |   6 +
 src/qemu/qemu_capabilities.c                  |   6 +
 src/qemu/qemu_capabilities.h                  |   4 +
 src/qemu/qemu_cgroup.c                        |  24 ++
 src/qemu/qemu_command.c                       |  54 ++-
 src/qemu/qemu_configs.c                       | 183 ++++++++
 src/qemu/qemu_configs.h                       |  31 ++
 src/qemu/qemu_domain.c                        |  10 +-
 src/qemu/qemu_extdevice.c                     |  79 +++-
 src/qemu/qemu_extdevice.h                     |   5 +
 src/qemu/qemu_firmware.c                      | 146 +------
 src/qemu/qemu_process.c                       |  18 +-
 src/qemu/qemu_security.c                      |  48 +++
 src/qemu/qemu_security.h                      |   6 +
 src/qemu/qemu_tpm.c                           |   2 +-
 src/qemu/qemu_vhost_user.c                    | 395 ++++++++++++++++++
 src/qemu/qemu_vhost_user.h                    |  51 +++
 src/qemu/qemu_vhost_user_gpu.c                | 307 ++++++++++++++
 src/qemu/qemu_vhost_user_gpu.h                |  54 +++
 tests/Makefile.am                             |   9 +
 .../etc/qemu/vhost-user/40-gpu.json           |   1 +
 .../etc/qemu/vhost-user/50-gpu.json           |   0
 .../qemu/vhost-user/test-vhost-user-gpu       |  11 +
 .../usr/share/qemu/vhost-user/30-gpu.json     |   1 +
 .../usr/share/qemu/vhost-user/50-gpu.json     |   8 +
 .../usr/share/qemu/vhost-user/60-gpu.json     |   1 +
 tests/qemuvhostusertest.c                     | 132 ++++++
 .../vhost-user-gpu-secondary.args             |  35 ++
 .../vhost-user-gpu-secondary.xml              |  44 ++
 tests/qemuxml2argvdata/vhost-user-vga.args    |  32 ++
 tests/qemuxml2argvdata/vhost-user-vga.xml     |  41 ++
 tests/qemuxml2argvtest.c                      |  21 +
 tests/virfilewrapper.c                        |  22 +
 40 files changed, 1690 insertions(+), 186 deletions(-)
 create mode 100644 src/qemu/qemu_configs.c
 create mode 100644 src/qemu/qemu_configs.h
 create mode 100644 src/qemu/qemu_vhost_user.c
 create mode 100644 src/qemu/qemu_vhost_user.h
 create mode 100644 src/qemu/qemu_vhost_user_gpu.c
 create mode 100644 src/qemu/qemu_vhost_user_gpu.h
 create mode 120000 tests/qemuvhostuserdata/etc/qemu/vhost-user/40-gpu.json
 create mode 100644 tests/qemuvhostuserdata/etc/qemu/vhost-user/50-gpu.json
 create mode 100755 tests/qemuvhostuserdata/usr/libexec/qemu/vhost-user/test-vhost-user-gpu
 create mode 120000 tests/qemuvhostuserdata/usr/share/qemu/vhost-user/30-gpu.json
 create mode 100644 tests/qemuvhostuserdata/usr/share/qemu/vhost-user/50-gpu.json
 create mode 120000 tests/qemuvhostuserdata/usr/share/qemu/vhost-user/60-gpu.json
 create mode 100644 tests/qemuvhostusertest.c
 create mode 100644 tests/qemuxml2argvdata/vhost-user-gpu-secondary.args
 create mode 100644 tests/qemuxml2argvdata/vhost-user-gpu-secondary.xml
 create mode 100644 tests/qemuxml2argvdata/vhost-user-vga.args
 create mode 100644 tests/qemuxml2argvdata/vhost-user-vga.xml

-- 
2.22.0.rc2.384.g1a9a72ea1d

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