[libvirt] [PATCH v3 2/2] Add USB option capability

Daniel P. Berrange berrange at redhat.com
Tue Apr 2 10:06:36 UTC 2013

On Fri, Mar 29, 2013 at 01:22:47PM +0800, Li Zhang wrote:
> From: Li Zhang <zhlcindy at linux.vnet.ibm.com>
> To avoid the collision for creating USB controllers in machine->init()
> and -device xx command line, it needs to set usb=off to avoid one USB
> controller created in machine->init(). So that libvirt can use -device
> or -usb to create USB controller sucessfully.
> So QEMU_CAPS_MACHINE_USB_OPT capability is added, and it is for QEMU
> v1.3.0 onwards which supports USB option.
> Signed-off-by: Li Zhang <zhlcindy at linux.vnet.ibm.com>

I'm not seeing why this is needed - we pass -nodefconfig and -nodefaults
which ought to disable any default built-in USB controller already
surely ?

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