From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:54441) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gvoHG-0004pk-Ma for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:08:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gvoHF-0003i2-W5 for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:08:30 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:43420 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gvoHE-0003el-9z for qemu-devel@nongnu.org; Mon, 18 Feb 2019 14:08:28 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1IJ3xa0138016 for ; Mon, 18 Feb 2019 14:08:25 -0500 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0b-001b2d01.pphosted.com with ESMTP id 2qr1tya94t-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 18 Feb 2019 14:08:25 -0500 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 18 Feb 2019 19:08:24 -0000 References: <1550512800-9922-1-git-send-email-akrowiak@linux.ibm.com> From: Tony Krowiak Date: Mon, 18 Feb 2019 14:08:16 -0500 MIME-Version: 1.0 In-Reply-To: <1550512800-9922-1-git-send-email-akrowiak@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Message-Id: Subject: Re: [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, fiuczy@linux.ibm.com On 2/18/19 12:59 PM, Tony Krowiak wrote: PLEASE IGNORE THIS PATCH SERIES. A v3 VERSION IS FORTHCOMING. VERSION v2 has already been posted and reviewed. > 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(-) >