From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755883AbdJPQ2D (ORCPT ); Mon, 16 Oct 2017 12:28:03 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39342 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753093AbdJPQ2A (ORCPT ); Mon, 16 Oct 2017 12:28:00 -0400 Subject: Re: [RFC 00/19] KVM: s390/crypto/vfio: guest dedicated crypto adapters To: Cornelia Huck Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, freude@de.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, kwankhede@nvidia.com, bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com, alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com, alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com, qemu-s390x@nongnu.org, jjherne@linux.vnet.ibm.com, thuth@redhat.com, pasic@linux.vnet.ibm.com References: <1507916344-3896-1-git-send-email-akrowiak@linux.vnet.ibm.com> <20171016120514.62145b4f.cohuck@redhat.com> From: Tony Krowiak Date: Mon, 16 Oct 2017 12:27:52 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <20171016120514.62145b4f.cohuck@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-TM-AS-GCONF: 00 x-cbid: 17101616-2213-0000-0000-0000022C9082 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007899; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000236; SDB=6.00932012; UDB=6.00469302; IPR=6.00712302; BA=6.00005641; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017560; XFM=3.00000015; UTC=2017-10-16 16:27:57 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17101616-2214-0000-0000-000057DFAE73 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-10-16_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1710160229 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/16/2017 06:05 AM, Cornelia Huck wrote: > On Fri, 13 Oct 2017 13:38:45 -0400 > Tony Krowiak 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. >