[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2 of 2] xl: Accept a list for usbdevice in config file
On 29/11/12 12:25, Ian Campbell wrote: On Thu, 2012-11-29 at 12:20 +0000, George Dunlap wrote:On Thu, Nov 29, 2012 at 11:44 AM, George Dunlap <george.dunlap@xxxxxxxxxxxxx> wrote: qemu.git/vl.c suggests other options might include, "disk:", "serial:", "net:" and "bt:"; other non-colon-including options include "keyboard", "mouse", "wacom-tablet", and "braile".On the other hand, a number of these seem to requiresupplementary options to work well; e.g., network and bt (bluetooth) require one argument to hook up a USB device, and another option to say how it's connected to what.It's also interesting to note that the KVM documentationdoesnt' mention using "-usb" and "-usbdevice" at all -- they seem to prefer using "-device" to specify hubs &c. Speaking of which, the KVM docs refer to "-usb" and "-usbdevice" as "legacy interfaces", which will only get you piix3.This is a concern for other types of device too. We seem to invoke new qemu with a mixture of legacy and new-style interfaces.It seems like exposing the full capabilities of qemu would mean either 1) coming up with a full specifciation which we can then translate into qemu directives, as libvirt seems to do, or 2) just recommend people construct their own qemu command-line options to pass through.Does libvirt let you care about topologies or just it just automatically create a new USB controller for every N devices you add and hook things up in some order? No idea -- I took a quick glance through the libvirt docs and I didn't see anything particular about a topology. I don't have a system set up with libvirt, so I can't try it and see what the resulting qemu command line looks like :-) http://libvirt.org/formatdomain.html#elementsUSB -George _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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