{"id":812235,"url":"http://patchwork.ozlabs.org/api/covers/812235/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/1505202976-1784-1-git-send-email-changpeng.liu@intel.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1505202976-1784-1-git-send-email-changpeng.liu@intel.com>","list_archive_url":null,"date":"2017-09-12T07:56:12","name":"[v3,0/4] *** Introduce a new vhost-user-blk host device to Qemu ***","submitter":{"id":71275,"url":"http://patchwork.ozlabs.org/api/people/71275/?format=json","name":"Liu, Changpeng","email":"changpeng.liu@intel.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/1505202976-1784-1-git-send-email-changpeng.liu@intel.com/mbox/","series":[{"id":2447,"url":"http://patchwork.ozlabs.org/api/series/2447/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=2447","date":"2017-09-12T07:56:15","name":"*** Introduce a new vhost-user-blk host device to Qemu ***","version":3,"mbox":"http://patchwork.ozlabs.org/series/2447/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/812235/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xrKWS4xNWz9s4q\n\tfor ;\n\tMon, 11 Sep 2017 17:37:08 +1000 (AEST)","from localhost ([::1]:55948 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1drJHD-0001Ey-KL\n\tfor incoming@patchwork.ozlabs.org; Mon, 11 Sep 2017 03:37:03 -0400","from eggs.gnu.org ([2001:4830:134:3::10]:43356)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1drJGV-0001DT-Es\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 03:36:20 -0400","from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from ) id 1drJGS-0007dd-6m\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 03:36:19 -0400","from mga05.intel.com ([192.55.52.43]:18824)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from )\n\tid 1drJGR-0007cA-TV\n\tfor qemu-devel@nongnu.org; Mon, 11 Sep 2017 03:36:16 -0400","from orsmga004.jf.intel.com ([10.7.209.38])\n\tby fmsmga105.fm.intel.com with ESMTP; 11 Sep 2017 00:36:13 -0700","from fedora.sh.intel.com ([10.67.112.210])\n\tby orsmga004.jf.intel.com with ESMTP; 11 Sep 2017 00:35:59 -0700"],"X-ExtLoop1":"1","X-IronPort-AV":"E=Sophos;i=\"5.42,376,1500966000\"; d=\"scan'208\";a=\"127495092\"","From":"Changpeng Liu ","To":"changpeng.liu@intel.com,\n\tqemu-devel@nongnu.org","Date":"Tue, 12 Sep 2017 15:56:12 +0800","Message-Id":"<1505202976-1784-1-git-send-email-changpeng.liu@intel.com>","X-Mailer":"git-send-email 1.9.3","X-detected-operating-system":"by eggs.gnu.org: Genre and OS details not\n\trecognized.","X-Received-From":"192.55.52.43","Subject":"[Qemu-devel] [PATCH v3 0/4] *** Introduce a new vhost-user-blk host\n\tdevice to Qemu ***","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"james.r.harris@intel.com, mst@redhat.com, stefanha@gmail.com,\n\tpbonzini@redhat.com, felipe@nutanix.com, marcandre.lureau@redhat.com","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"Although virtio scsi specification was designed as a replacement for virtio_blk,\nthere are still many users using virtio_blk. Qemu 2.9 introduced a new device\nvhost user scsi which can process I/O in user space for virtio_scsi, this commit\nintroduces a new vhost user block host device, which can support virtio_blk in\nGuest OS, and I/O processing in another I/O target.\n\nDue to the limitation for virtio_blk specification, virtio_blk device cannot get\nblock information such as capacity, block size etc via the specification, several\nnew vhost user messages were added to support deliver virtio config space\ninformation between Qemu and I/O target, VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG\nmessages used for get/set config space from/to I/O target, VHOST_USER_SET_CONFIG_FD\nwas added for event notifier in case the change of virtio config space. Also, those\nmessages can be used for vhost device live migration as well.\n\nChangpeng Liu (4):\n vhost-user: add new vhost user messages to support virtio config space\n vhost-user-blk: introduce a new vhost-user-blk host device\n contrib/libvhost-user: enable virtio config space messages\n contrib/vhost-user-blk: introduce a vhost-user-blk sample application\n\n .gitignore | 1 +\n Makefile | 3 +\n Makefile.objs | 2 +\n configure | 11 +\n contrib/libvhost-user/libvhost-user.c | 74 ++++\n contrib/libvhost-user/libvhost-user.h | 15 +\n contrib/vhost-user-blk/Makefile.objs | 1 +\n contrib/vhost-user-blk/vhost-user-blk.c | 735 ++++++++++++++++++++++++++++++++\n docs/interop/vhost-user.txt | 32 ++\n hw/block/Makefile.objs | 3 +\n hw/block/vhost-user-blk.c | 360 ++++++++++++++++\n hw/virtio/vhost-user.c | 97 +++++\n hw/virtio/vhost.c | 63 +++\n hw/virtio/virtio-pci.c | 55 +++\n hw/virtio/virtio-pci.h | 18 +\n include/hw/virtio/vhost-backend.h | 8 +\n include/hw/virtio/vhost-user-blk.h | 40 ++\n include/hw/virtio/vhost.h | 16 +\n 18 files changed, 1534 insertions(+)\n create mode 100644 contrib/vhost-user-blk/Makefile.objs\n create mode 100644 contrib/vhost-user-blk/vhost-user-blk.c\n create mode 100644 hw/block/vhost-user-blk.c\n create mode 100644 include/hw/virtio/vhost-user-blk.h"}