Re: [libvirt] [PATCH v3] qemu: fix command line building for iommu devices

The intel-iommu device has existed since QEMU 2.2.0, but it was only possible to create it with -device since QEMU 2.7.0, thanks to: commit 621d983a1f9051f4cfc3f402569b46b77d8449fc Author: Marcel Apfelbaum <marcel(a)redhat.com&gt; Date: Mon Jun 27 18:38:34 2016 +0300 hw/iommu: enable iommu with -device Use the standard '-device intel-iommu' to create the IOMMU device. The legacy '-machine,iommu=on' can still be used. The libvirt capability check & command line formatting code is thus broken for all QEMU versions 2.2.0 -> 2.6.0 inclusive. This fixes it to use iommu=on instead. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; --- src/qemu/qemu_capabilities.c | 12 +++++++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 22 +++++++++++++ tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml | 2 +- tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml | 2 +- tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml | 2 +- .../qemuxml2argv-intel-iommu-machine.args | 21 ++++++++++++ .../qemuxml2argv-intel-iommu-machine.xml | 37 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 2 ++ 9 files changed, 98 insertions(+), 3 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-machine.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-intel-iommu-machine.xml