Re: [RFC 00/19] KVM: s390/crypto/vfio: guest dedicated crypto adapters

[Tony Krowiak]

On 10/16/2017 06:05 AM, Cornelia Huck wrote:
> On Fri, 13 Oct 2017 13:38:45 -0400
> Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx> wrote:
>
> > Overview:
> > --------
> > An adjunct processor (AP) facility is an IBM Z cryptographic facility. The
> > AP facility is comprised of three AP instructions and from 1 to 256 AP
> > adapter cards. The design takes advantage of the interpretive execution mode
> > provided by the SIE architecture. With interpretive execution mode, the AP
> > instructions executed on the guest are interpreted by the hardware. This
> > allows guests direct access to AP adapter cards. The first goal of this
> > patch series is to provide direct access by a KVM guest to an AP as a
> > pass-through device. The second goal is to provide administrators with the
> > means to configure KVM guests to grant direct access to AP facilities
> > assigned to the LPAR in which the host linux system is running.
> >
> > To facilitate the comprehension of the design, let's present an overview of
> > the AP architecture.
> I have not yet looked at the patches (and I'm not sure whether I'll be
> able to do so until after the KVM Forum), but I think this also needs
> some explanation under Documentation/, so people can still make sense
> of it in the future.
That makes sense, I will create a document.
>