From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:32805) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gvnDW-0001h8-Mq for qemu-devel@nongnu.org; Mon, 18 Feb 2019 13:00:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gvnDP-000884-I8 for qemu-devel@nongnu.org; Mon, 18 Feb 2019 13:00:29 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:36922) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gvnDK-0007rC-Fi for qemu-devel@nongnu.org; Mon, 18 Feb 2019 13:00:26 -0500 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 x1IHrlAf043257 for ; Mon, 18 Feb 2019 13:00:12 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 2qqxqwsbwf-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 18 Feb 2019 13:00:11 -0500 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 18 Feb 2019 18:00:11 -0000 From: Tony Krowiak Date: Mon, 18 Feb 2019 12:59:58 -0500 Message-Id: <1550512800-9922-1-git-send-email-akrowiak@linux.ibm.com> Subject: [Qemu-devel] [PATCH v2 0/2] s390x/vfio-ap: hot plug/unplug vfio-ap device List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, borntraeger@de.ibm.com, cohuck@redhat.com, david@redhat.com, pmorel@linux.ibm.com, alifm@linux.ibm.com, mjrosato@linux.ibm.com, pasic@linux.ibm.com, alex.williamson@redhat.com, akrowiak@linux.ibm.com, fiuczy@linux.ibm.com This patch series introduces hot plug/unplug of a vfio-ap device. A vfio-ap device can be hot plugged only if: 1. The guest does not yet have a vfio-ap device (only one is allowed per guest) 2. The guest was started with the following CPU model features enabled: * ap=on * apft=on 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 $path-to-mdev is the absolute path to the mediated matrix device to be used to configure the guest's AP device matrix. A vfio-ap device can be hot unplugged only if: 1. The guest was started with a vfio-ap device configured for it: -device vfio-ap,sysfsdev=$path-to-mdev 2. The guest was started with the following CPU model features enabled: * 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(-) -- 2.7.4