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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 11 Mar 2019 15:57:04 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2BFv2tA61472970 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 11 Mar 2019 15:57:02 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8924811C054; Mon, 11 Mar 2019 15:57:02 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E32C611C04C; Mon, 11 Mar 2019 15:57:01 +0000 (GMT) Received: from sig-9-145-10-72.uk.ibm.com (unknown [9.145.10.72]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Mon, 11 Mar 2019 15:57:01 +0000 (GMT) Date: Mon, 11 Mar 2019 16:57:00 +0100 (CET) From: Sebastian Ott X-X-Sender: sebott@schleppi To: Tony Krowiak cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, freude@de.ibm.com, borntraeger@de.ibm.com, cohuck@redhat.com, pmorel@linux.vnet.ibm.com, pasic@linux.vnet.ibm.com, akrowiak@linux.vnet.ibm.com, oberpar@linux.ibm.com Subject: Re: [PATCH v3] zcrypt: handle AP Info notification from CHSC SEI command In-Reply-To: <9224eca6-6d2c-7089-1fb2-618a04d7286b@linux.ibm.com> References: <1550509295-1199-1-git-send-email-akrowiak@linux.ibm.com> <9224eca6-6d2c-7089-1fb2-618a04d7286b@linux.ibm.com> User-Agent: Alpine 2.21 (LFD 202 2017-01-01) Organization: =?ISO-8859-15?Q?=22IBM_Deutschland_Research_&_Development_GmbH?= =?ISO-8859-15?Q?_=2F_Vorsitzende_des_Aufsichtsrats=3A_Matthias?= =?ISO-8859-15?Q?_Hartmann_Gesch=E4ftsf=FChrung=3A_Dirk_Wittkopp?= =?ISO-8859-15?Q?_Sitz_der_Gesellschaft=3A_B=F6blingen_=2F_Reg?= =?ISO-8859-15?Q?istergericht=3A_Amtsgericht_Stuttgart=2C_HRB_2432?= =?ISO-8859-15?Q?94=22?= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-TM-AS-GCONF: 00 x-cbid: 19031115-0020-0000-0000-000003214DFC X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19031115-0021-0000-0000-00002173734D Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-11_12:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=526 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903110114 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 11 Mar 2019, Tony Krowiak wrote: > On 2/18/19 12:01 PM, Tony Krowiak wrote: > > The current AP bus implementation periodically polls the AP configuration > > to detect changes. When the AP configuration is dynamically changed via the > > SE or an SCLP instruction, the changes will not be reflected to sysfs until > > the next time the AP configuration is polled. The CHSC architecture > > provides a Store Event Information (SEI) command to make notification of an > > AP configuration change. This patch introduces a handler to process > > notification from the CHSC SEI command by immediately kicking off an AP bus > > scan-after-event. > > Ping Applied.