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Re: [Qemu-devel] [PATCH v4 0/5] add CCW indirect data access support
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/5] add CCW indirect data access support |
Date: |
Tue, 26 Sep 2017 14:59:58 +0200 |
On Thu, 21 Sep 2017 20:08:36 +0200
Halil Pasic <address@hidden> 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.
Thanks, applied.