Re: [libvirt] [PATCH] qemu: Build usb controller command line more wisely

https://bugzilla.redhat.com/show_bug.cgi?id=1552127 When building command line for USB controllers we have to do more than just put controller's alias onto the command line. QEMU has concept of these joined USB controllers. For instance ehci and uhci controllers need to create the same USB bus. To achieve that the slave controller needs to refer the master controller. This worked until we've introduced user aliases because both master and slave had the same alias. With user aliases slave can have different alias than master. Therefore, when generating command line for slave we need to look up the master's alias. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_command.c | 44 ++++++++++++++-- tests/qemuxml2argvdata/user-aliases-usb.args | 38 ++++++++++++++ tests/qemuxml2argvdata/user-aliases-usb.xml | 78 ++++++++++++++++++++++++++++ tests/qemuxml2argvtest.c | 3 ++ 4 files changed, 158 insertions(+), 5 deletions(-) create mode 100644 tests/qemuxml2argvdata/user-aliases-usb.args create mode 100644 tests/qemuxml2argvdata/user-aliases-usb.xml