From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Subject: Re: [PATCH v4 01/16] s390: cio: introduce cio_cancel_halt_clear
Date: Fri, 17 Mar 2017 10:51:20 +0100 (CET)
Message-ID: <alpine.LFD.2.20.1703171047330.3003@schleppi>
References: <20170317031743.40128-1-bjsdjshi@linux.vnet.ibm.com> <20170317031743.40128-2-bjsdjshi@linux.vnet.ibm.com> <alpine.LFD.2.20.1703171023360.3003@schleppi> <20170317093953.GP6839@bjsdjshi@linux.vnet.ibm.com>
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To: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, qemu-devel@nongnu.org, renxiaof@linux.vnet.ibm.com, Cornelia Huck <cornelia.huck@de.ibm.com>, borntraeger@de.ibm.com, agraf@suse.com, alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com, pasic@linux.vnet.ibm.com, Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
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On Fri, 17 Mar 2017, Dong Jia Shi wrote:
> * Sebastian Ott <sebott@linux.vnet.ibm.com> [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