On Wed, Apr 11, 2018 at 11:24:08AM +0200, Geert Uytterhoeven wrote: > If a device is part of a PM Domain (e.g. power and/or clock domain), its > power state is managed using Runtime PM. Without Runtime PM, the device > may not be powered up, causing subtle failures, crashes, or system > lock-ups when the device is accessed by the guest. > > Fix this by adding Runtime PM support, powering the device when the VFIO > device is opened by the guest. > > Note that while more fine-grained power management could be implemented > on the guest side, if exported, this would be inherently unsafe, as > abusing it may kill the whole system. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
