From patchwork Mon Feb 18 19:49:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony Krowiak X-Patchwork-Id: 10818733 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E74BD1390 for ; Mon, 18 Feb 2019 19:51:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D23712BAD5 for ; Mon, 18 Feb 2019 19:51:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C116C2BAD7; Mon, 18 Feb 2019 19:51:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6AD332BAD5 for ; Mon, 18 Feb 2019 19:51:31 +0000 (UTC) Received: from localhost ([127.0.0.1]:35870 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gvows-0004RJ-2a for patchwork-qemu-devel@patchwork.kernel.org; Mon, 18 Feb 2019 14:51:30 -0500 Received: from eggs.gnu.org ([209.51.188.92]:33330) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gvovg-0003dB-KR for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:50:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gvovf-0007iu-Qj for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:50:16 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44800) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gvovf-0007dZ-FM for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:50:15 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1IJi6Hw100095 for ; Mon, 18 Feb 2019 14:50:13 -0500 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0a-001b2d01.pphosted.com with ESMTP id 2qr1r6m5ne-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 18 Feb 2019 14:50:13 -0500 Received: from localhost by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 18 Feb 2019 19:50:08 -0000 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1IJo5Ao24576032 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 18 Feb 2019 19:50:05 GMT Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 255406A057; Mon, 18 Feb 2019 19:50:05 +0000 (GMT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A4DE66A04F; Mon, 18 Feb 2019 19:50:03 +0000 (GMT) Received: from akrowiak-ThinkPad-P50.ibm.com (unknown [9.85.134.111]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTPS; Mon, 18 Feb 2019 19:50:03 +0000 (GMT) From: Tony Krowiak To: qemu-devel@nongnu.org Date: Mon, 18 Feb 2019 14:49:55 -0500 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 19021819-0036-0000-0000-00000A8E0C09 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010621; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000281; SDB=6.01162968; UDB=6.00607192; IPR=6.00943545; MB=3.00025641; MTD=3.00000008; XFM=3.00000015; UTC=2019-02-18 19:50:10 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19021819-0037-0000-0000-00004AC6123F Message-Id: <1550519397-25359-1-git-send-email-akrowiak@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-18_14:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=533 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902180147 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v3 0/2] s390x/vfio-ap: hot plug/unplug vfio-ap device X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: akrowiak@linux.ibm.com, cohuck@redhat.com, mjrosato@linux.ibm.com, pmorel@linux.ibm.com, david@redhat.com, alifm@linux.ibm.com, alex.williamson@redhat.com, pasic@linux.ibm.com, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, fiuczy@linux.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch series introduces hot plug/unplug of a vfio-ap device. To hot plug a vfio-ap device, the QEMU device_add function may be used: (qemu) device_add vfio-ap,sysfsdev=$path-to-mdev Where $path-to-mdev is the absolute path to the mediated matrix device to which AP resources to be used by the guest have been assigned. A vfio-ap device can be hot plugged only if: 1. A vfio-ap device has not been attached to the ap-bus (only one is allowed per guest) either via the QEMU command line or a prior hot plug action. 2. The guest was started with the CPU model feature for AP enabled (e.g., -cpu host,ap=on). To hot unplug a vfio-ap device, the QEMU device-del function may be used: (qemu) device_del vfio-ap,sysfsdev=$path-to-mdev Where $path-to-mdev is the absolute path to the mediated matrix device specified when the vfio-ap device was attached to the virtual machine's ap-bus. A vfio-ap device can be hot unplugged only if: 1. A vfio-ap device has been attached to the virtual machine's ap-abus either via the QEMU command line or a prior hot plug action. 2. The guest was started with the CPU model feature for AP enabled (e.g., -cpu host,ap=on). Tony Krowiak (2): s390x/vfio-ap: Implement hot plug/unplug of vfio-ap device s390x/vfio-ap: document hot plug/unplug of vfio-ap device docs/vfio-ap.txt | 58 +++++++++++++++++++++++++++++++++++++++++++++++----- hw/s390x/ap-bridge.c | 12 ++++++++++- hw/vfio/ap.c | 2 +- 3 files changed, 65 insertions(+), 7 deletions(-)