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Thu, 30 Jul 2020 14:07:34 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D29864C05A; Thu, 30 Jul 2020 14:07:33 +0000 (GMT) Received: from marcibm.ibmuc.com (unknown [9.145.35.48]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 30 Jul 2020 14:07:33 +0000 (GMT) From: Marc Hartmayer To: Subject: [PATCH 0/2] Enable virtio-fs on s390x Date: Thu, 30 Jul 2020 16:07:29 +0200 Message-Id: <20200730140731.32912-1-mhartmay@linux.ibm.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-30_10:2020-07-30, 2020-07-30 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=999 malwarescore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 spamscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007300099 Received-SPF: pass client-ip=148.163.156.1; envelope-from=mhartmay@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/30 07:28:21 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Michael S. Tsirkin" , Cornelia Huck , "Dr. David Alan Gilbert" , Halil Pasic , Stefan Hajnoczi , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This patch series is about enabling virtio-fs on s390x. For that we need + some shim code (first patch), and we need + libvhost-user to deal with virtio endiannes for non-legacy virtio devices as mandated by the spec. How to use? For general instructions how to use virtio-fs (on x86) please have a look at https://virtio-fs.gitlab.io/howto-qemu.html. Most of the instructions can also be applied on s390x. In short: 1. Install self-compiled QEMU with this patch series applied 2. Prepare host and guest kernel so they support virtio-fs Start virtiofsd on the host $ virtiofsd -f --socket-path=/tmp/vhostqemu -o source=/tmp/shared Now you can start QEMU in a separate shell on the host: $ qemu-system-s390x -machine type=s390-ccw-virtio,accel=kvm,memory-backend=mem \ -object memory-backend-file,id=mem,size=2G,mem-path=/dev/shm/virtiofs,share=on,prealloc=on,prealloc-threads=1 \ -chardev socket,id=char0,path=/tmp/vhostqemu -device vhost-user-fs-ccw,queue-size=1024,chardev=char0,tag=myfs \ -drive if=virtio,file=disk.qcow2 \ -m 2G -smp 2 -nographic Log into the guest and mount it $ mount -t virtiofs myfs /mnt Changelog: RFC v2 -> v1: - patch 1: + Added `force_revision_1 = true` (Conny) + I didn't add the r-b from Stefan Hajnoczi as I've added the changes suggested by Conny - squashed patches 2 and 3: + removed assertion in performance critical code path (Stefan) + dropped all dead code (Stefan) + removed libvhost-access.h RFC v1 -> RFC v2: + rebased + drop patch "libvhost-user: print invalid address on vu_panic" as it's not related to this series + drop patch "[RFC 4/4] HACK: Hard-code the libvhost-user.o-cflags for s390x" + patch "virtio: add vhost-user-fs-ccw device": replace qdev_set_parent_bus and object_property_set_bool by qdev_realize + patch "libvhost-user: handle endianness as mandated by the spec": Drop support for legacy virtio devices + add patch to fence legacy virtio devices *** BLURB HERE *** Halil Pasic (1): virtio: add vhost-user-fs-ccw device Marc Hartmayer (1): libvhost-user: handle endianness as mandated by the spec contrib/libvhost-user/libvhost-user.c | 77 +++++++++++++++------------ hw/s390x/Makefile.objs | 1 + hw/s390x/vhost-user-fs-ccw.c | 75 ++++++++++++++++++++++++++ 3 files changed, 119 insertions(+), 34 deletions(-) create mode 100644 hw/s390x/vhost-user-fs-ccw.c