On Fri, 17 Mar 2017, Dong Jia Shi wrote: > * Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx> [2017-03-17 10:26:51 +0100]: > > > On Fri, 17 Mar 2017, Dong Jia Shi wrote: > > > For future code reuse purpose, this decouples the cio code with > > > the ccw device specific parts from ccw_device_cancel_halt_clear, > > > and makes a new common I/O interface named cio_cancel_halt_clear. > > > > What would the user of cio_cancel_halt_clear be? > Hi Sebastian, > > We are trying to introduce a new I/O subchannel driver to enable usage > of I/O subchannels via VFIO-CCW, so we can passthru a subchannel to a > KVM guest. And that new vfio-ccw subchannel driver is the user. :> OK, thanks for the explanation. May I suggest that you put these patches in the series that actually introduces the new subchannel driver. Sebastian