Re: [libvirt] [RFC PATCH 00/17] Add vhost-user-gpu support

ping On Fri, Jul 13, 2018 at 3:28 PM <marcandre.lureau(a)redhat.com&gt; wrote:

> > From: Marc-André Lureau <marcandre.lureau(a)redhat.com&gt; > > Hi, > > This series of patches add support for running a virtio GPU in a > seperate process, using vhost-user. > > The QEMU series "[PATCH v4 00/29] vhost-user for input & GPU" is still > under review, and will hopefully land in 3.1. There are several > benefits of running the GPU process in an external process, since Mesa > is rather heavy on the qemu main loop, and may block for a while or > crash. I observe x5 performance improvements with Unigine Heaven 4 > benchmark. > > The external GPU process is started with one end of the vhost-user > socket pair, the other end is given to a QEMU chardev. It is also > added to the emulator cgroup to restrict its CPU usage. > > vhost-user requires shared VM memory. A few preliminary patches ease > and improve shared memory setup, when no explicit domain NUMA > configuration is given. Also, if there is no need for file-backed > memory, teach libvirt to make use of memfd memory backend, which has > better security guarantees and is easier to setup. > > Review welcome! > > Marc-André Lureau (17): > qemu: setup shared memory without explicit numa configuration > qemu: add memory-backend-memfd capability check > qemu: use memory-backend-memfd if possible > qemu: add vhost-user-gpu capabilities > domain: add "vhost-user" video type > qemu: fill the vhost-user video type capability > qemu: check that qemu is vhost-user-vga capable > qemu: vhost-user is valid as non-primary video device > qemu: validate vhost-user video model > qemu: add qemuSecurityStartVhostUserGPU helper > qemu: add vhost-user-gpu helper unit > qemu: restrict 'virgl=' option to 'virtio' video type > qemu: set default address type on vhost-user video model > qemu: start/stop the vhost-user-gpu external device > qemu: build vhost-user-backend for vhost-user-gpu > qemu: build vhost-user-gpu video device arguments > tests: add vhost-user-gpu xml2argv tests > > docs/formatdomain.html.in | 5 +- > docs/schemas/domaincommon.rng | 1 + > src/conf/device_conf.h | 1 + > src/conf/domain_conf.c | 4 +- > src/conf/domain_conf.h | 1 + > src/qemu/Makefile.inc.am | 2 + > src/qemu/qemu_capabilities.c | 10 + > src/qemu/qemu_capabilities.h | 5 + > src/qemu/qemu_command.c | 191 ++++++++--- > src/qemu/qemu_domain.c | 8 +- > src/qemu/qemu_domain_address.c | 4 +- > src/qemu/qemu_extdevice.c | 47 ++- > src/qemu/qemu_process.c | 6 +- > src/qemu/qemu_security.c | 48 +++ > src/qemu/qemu_security.h | 6 + > src/qemu/qemu_vhost_user_gpu.c | 318 ++++++++++++++++++ > src/qemu/qemu_vhost_user_gpu.h | 48 +++ > tests/domaincapsschemadata/full.xml | 1 + > .../caps_2.12.0.aarch64.xml | 1 + > .../caps_2.12.0.ppc64.xml | 1 + > .../caps_2.12.0.s390x.xml | 1 + > .../caps_2.12.0.x86_64.xml | 1 + > .../qemucapabilitiesdata/caps_3.0.0.ppc64.xml | 1 + > .../caps_3.0.0.x86_64.xml | 1 + > .../fd-memory-no-numa-topology.args | 4 + > tests/qemuxml2argvdata/memfd.args | 28 ++ > tests/qemuxml2argvdata/memfd.xml | 32 ++ > .../vhost-user-gpu-secondary.args | 34 ++ > .../vhost-user-gpu-secondary.xml | 38 +++ > tests/qemuxml2argvdata/vhost-user-vga.args | 31 ++ > tests/qemuxml2argvdata/vhost-user-vga.xml | 35 ++ > tests/qemuxml2argvtest.c | 14 + > 32 files changed, 877 insertions(+), 51 deletions(-) > create mode 100644 src/qemu/qemu_vhost_user_gpu.c > create mode 100644 src/qemu/qemu_vhost_user_gpu.h > create mode 100644 tests/qemuxml2argvdata/memfd.args > create mode 100644 tests/qemuxml2argvdata/memfd.xml > 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 > > -- > 2.18.0.129.ge3331758f1 > > -- > libvir-list mailing list > libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list