From: Sahid Orentino Ferdjaoui <sahid.ferdja...@redhat.com> In version 2.7.0, QEMU introduced support of busy polling for vhost-net [0]. To avoid paraphrasing original authors of that feature and the purpose it I prefer to share a pointer [1].
This patch serie exposes throught the NIC driver-specific element a new option 'poll_us'. That option is only available with the backend driver 'vhost' and that because libvirt automatically fallback to QEMU if the driver is not specified where that option is not available. The option 'poll_us' takes a positive. 0 means that the option is not going to be exposed. [0] 69e87b32680a41d9761191443587c595b6f5fc3f [1] https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg04595.html Sahid Orentino Ferdjaoui (3): qemu: detect support for vhost-net busy polling conf: introduce 'poll_us' attribute for domain interface This patch finalizes support of 'poll_us' attribute as an option of the NIC driver-specific element, the commit also takes care of hotplug. docs/formatdomain.html.in | 12 +++++++- docs/schemas/domaincommon.rng | 5 ++++ src/conf/domain_conf.c | 16 +++++++++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 5 ++++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 28 ++++++++++++++++++ src/qemu/qemu_hotplug.c | 12 ++++++++ tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + .../qemuxml2argv-net-virtio-netdev-pollus-fail.xml | 23 +++++++++++++++ ...xml2argv-net-virtio-netdev-pollus-qemu-fail.xml | 23 +++++++++++++++ .../qemuxml2argv-net-virtio-netdev-pollus.args | 25 ++++++++++++++++ .../qemuxml2argv-net-virtio-netdev-pollus.xml | 23 +++++++++++++++ .../qemuxml2argv-net-virtio-poll-us.xml | 23 +++++++++++++++ tests/qemuxml2argvtest.c | 9 ++++++ .../qemuxml2xmlout-net-virtio-poll-us.xml | 33 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 21 files changed, 244 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus-fail.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus-qemu-fail.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-poll-us.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-net-virtio-poll-us.xml -- 2.9.4 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
