| Subject | Re: [RFC 00/19] KVM: s390/crypto/vfio: guest dedicated crypto adapters | From | Tony Krowiak <> | Date | Mon, 16 Oct 2017 12:27:52 -0400 |
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On 10/16/2017 06:05 AM, Cornelia Huck wrote: > On Fri, 13 Oct 2017 13:38:45 -0400 > Tony Krowiak <akrowiak@linux.vnet.ibm.com> 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. >
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