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.
