Date: Tue, 26 Sep 2017 14:59:58 +0200
From: Cornelia Huck <cohuck@redhat.com>
Message-ID: <20170926145958.05c8ef01.cohuck@redhat.com>
In-Reply-To: <20170921180841.24490-1-pasic@linux.vnet.ibm.com>
References: <20170921180841.24490-1-pasic@linux.vnet.ibm.com>
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Subject: Re: [Qemu-devel] [PATCH v4 0/5] add CCW indirect data access support
To: Halil Pasic <pasic@linux.vnet.ibm.com>
Cc: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>, Pierre Morel <pmorel@linux.vnet.ibm.com>, qemu-devel@nongnu.org

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.

Thanks, applied.