From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 435F1C10F0E for ; Mon, 15 Apr 2019 19:00:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0BE212087C for ; Mon, 15 Apr 2019 19:00:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728226AbfDOTAB (ORCPT ); Mon, 15 Apr 2019 15:00:01 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47220 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728061AbfDOTAA (ORCPT ); Mon, 15 Apr 2019 15:00:00 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3FIxpZ0018917 for ; Mon, 15 Apr 2019 14:59:59 -0400 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2rvwm65p2e-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 15 Apr 2019 14:59:59 -0400 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 15 Apr 2019 19:59:57 +0100 Received: from b06cxnps4075.portsmouth.uk.ibm.com (9.149.109.197) by e06smtp02.uk.ibm.com (192.168.101.132) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 15 Apr 2019 19:59:53 +0100 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3FIxqTB47841400 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 15 Apr 2019 18:59:52 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2EBA8AE070; Mon, 15 Apr 2019 18:59:52 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A0054AE087; Mon, 15 Apr 2019 18:59:51 +0000 (GMT) Received: from oc2783563651 (unknown [9.152.224.66]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 15 Apr 2019 18:59:51 +0000 (GMT) Date: Mon, 15 Apr 2019 20:59:50 +0200 From: Halil Pasic To: Tony Krowiak Cc: Cornelia Huck , Harald Freudenberger , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Reinhard Buendgen , borntraeger@de.ibm.com, frankja@linux.ibm.com, david@redhat.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, pmorel@linux.ibm.com, alex.williamson@redhat.com, kwankhede@nvidia.com Subject: Re: [PATCH 1/7] s390: zcrypt: driver callback to indicate resource in use In-Reply-To: <3d762e51-7210-529f-61de-98d80689bff6@linux.ibm.com> References: <1555016604-2008-1-git-send-email-akrowiak@linux.ibm.com> <1555016604-2008-2-git-send-email-akrowiak@linux.ibm.com> <223c82c7-6a75-7209-3652-c2341c83878f@linux.ibm.com> <20190412114313.0156c01b.cohuck@redhat.com> <89f09e58-eab6-94d4-c5aa-937162d60744@linux.ibm.com> <20190415115030.1df61182.cohuck@redhat.com> <3d762e51-7210-529f-61de-98d80689bff6@linux.ibm.com> Organization: IBM X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.31; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19041518-0008-0000-0000-000002DA18C9 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19041518-0009-0000-0000-000022464E4A Message-Id: <20190415205950.7655cee3@oc2783563651> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-15_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=815 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904150131 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 15 Apr 2019 12:51:23 -0400 Tony Krowiak wrote: > Having said that, I understand your concern about a driver hogging > resources. I think I can provide a solution that serves both the > purpose of preventing problems associated with accidental removal > of AP resources as well as allowing root to remove them > forcefully. I'll work on that for v2. Can you tell us some more about this solution? Should we stop reviewing v1 because v2 is going to be different anyway? Regards, Halil