Re: [Qemu-devel] [PATCH RFC v3 00/15] basic vfio-ccw infrastructure

[Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>]

* Cornelia Huck <cornelia.huck@de.ibm.com> [2017-03-10 11:46:05 +0100]:

> On Thu, 9 Mar 2017 17:25:25 +0800
> Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> wrote:
> 
> > * Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> [2017-02-17 09:29:24 +0100]:
> > 
> > > vfio-ccw: the basic infrastructure
> > > ==================================
> > > 
> > > Introduction
> > > ------------
> > > 
> > > Here we describe the vfio support for I/O subchannel devices for
> > > Linux/s390. Motivation for vfio-ccw is to passthrough subchannels to a
> > > virtual machine, while vfio is the means.
> > > 
> > 
> > Ping.
> > 
> > Any more comment for this version?
> > 
> > Thanks.
> > 
> > [...]
> > 
Hey Conny,

> 
> I just walked through the patch set again and did not notice anything
> else. There's still the area of channel path handling, but I don't see
> why it shouldn't be able to fit into the infrastructure you introduce
> here. (I'd expect most of the interesting stuff there to be handled in
> user space anyway.)
Thanks! I have the same expectation for the channel path handling part.

> 
> You should update MAINTAINERS, though. I'm not sure the s390 cio folks
> are prepared to handle vfio-ccw :) (although I think you should cc:
> them on the patches exporting cio interfaces.) It's probably best to
> take vfio-ccw through the kvm-s390 tree.

Beside the fixes for former comments form you and Alex, I will also do
the following stuff in the next version:
1. Remove the "RFC" tag from the mail subject.
2. Cc the s390 CIO layer maintainers for patch 1 and 2:
    Sebastian Ott <sebott@linux.vnet.ibm.com>
    Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
3. For the new created files, update MAINTAINERS by adding:
S390 VFIO-CCW DRIVER
M:	Cornelia Huck <cornelia.huck@de.ibm.com>
L:	linux-s390@vger.kernel.org
L:	kvm@vger.kernel.org
S:	Supported
F:	drivers/s390/cio/vfio_ccw*
F:	Documentation/s390/vfio-ccw.txt
F:	include/uapi/linux/vfio_ccw.h

-- 
Dong Jia