From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gordan Bobic <gordan@bobich.net>
Subject: =?utf-8?q?USB_passthrough_burning_5=25_of_CPU=3F?=
Date: Mon, 05 Aug 2013 13:28:39 +0100
Message-ID: <446278be57f7b83e771e9306f7172d96@mail.shatteredsilicon.net>
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 Ever since I switched from passing a PCI USB controller
 through to a domU in favour of passing USB devices using
 the "usbdevice" config parameter, the domU affected
 seems to have qemu-dm "idling" at about 5% CPU usage in
 dom0. With the PCI USB controller passed through, this
 does not happen.

 Is this normal/expected? Does a similar continuous CPU
 overhead invisibly apply to PCI passthrough devices as
 well? Or is this CPU tax only applicable to USB
 passthrough?

 Gordan