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

From: Marc-André Lureau <marcandre.lureau(a)redhat.com&gt; 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