Re: [Qemu-devel] [PATCH v4 0/5] add CCW indirect data access support

[Cornelia Huck <cohuck@redhat.com>]

On Thu, 21 Sep 2017 20:08:36 +0200
Halil Pasic <pasic@linux.vnet.ibm.com> wrote:

> Abstract
> --------
> 
> The objective of this series is introducing CCW IDA (indirect data
> access) support to our virtual channel subsystem implementation. Briefly
> CCW IDA can be thought of as a kind of a scatter gather support for a
> single CCW. If certain flags are set, the cda is to be interpreted as an
> address to a list which in turn holds further addresses designating the
> actual data.  Thus the scheme which we are currently using for accessing
> CCW payload does not work in general case. Currently there is no
> immediate need for proper IDA handling (no use case), but since it IDA is
> a non-optional part of the architecture, the only way towards AR
> compliance is actually implementing IDA.
> 
> The focus of this patch set is introducing IDA support. There seems to be
> a potential for further  improvements based on the introduced
> infrastructure, but such improvements are intended to be discusses
> separately and realized as patches on top of this series.

Hm, do you have a list of what you want to do as follow-on patches?
(Checking return codes, ...)

It's easy to lose track of all this :)