Comment 68 for bug 156085

@lnx Here is my patch.
I downloaded the Ubuntu source but it doesn't seem to be complete (I think the ubuntu package relies more on libvirt which doesnt support USB pass through yet)

My patch here is for version 77 of kvm, available here: http://sourceforge.net/project/showfiles.php?group_id=180599
It patches qemu to allow the proper use of the USB pass through option and I have been using it successfully since I patched it (I have a USB programmer that only works with windows).

Save it to the kvm77 directory (where you run the ./configure etc) and run:
patch -p1 < usb-linux.patch
to patch the file.

Then compile as normal, I now have to run my virtual machines from the command line and not through kvm virt manager app, I think this is because of what I said earlier, but its all running perfectly from there and is still fast!