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Thu, 15 Oct 2020 18:05:25 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 09FI5LDD026156; Thu, 15 Oct 2020 18:05:21 GMT Received: from jaraman-bur-1.us.oracle.com (/10.152.33.39) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 15 Oct 2020 11:05:21 -0700 From: Jagannathan Raman To: qemu-devel@nongnu.org Subject: [PATCH v11 00/19] Initial support for multi-process Qemu Date: Thu, 15 Oct 2020 14:04:53 -0400 Message-Id: X-Mailer: git-send-email 1.8.3.1 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9775 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150121 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9775 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 impostorscore=0 suspectscore=0 priorityscore=1501 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 mlxscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150121 Received-SPF: pass client-ip=141.146.126.79; envelope-from=jag.raman@oracle.com; helo=aserp2130.oracle.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/15 11:04:16 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=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: elena.ufimtseva@oracle.com, fam@euphon.net, swapnil.ingle@nutanix.com, john.g.johnson@oracle.com, kraxel@redhat.com, jag.raman@oracle.com, quintela@redhat.com, mst@redhat.com, armbru@redhat.com, kanth.ghatraju@oracle.com, felipe@nutanix.com, thuth@redhat.com, ehabkost@redhat.com, konrad.wilk@oracle.com, dgilbert@redhat.com, alex.williamson@redhat.com, stefanha@redhat.com, thanos.makatos@nutanix.com, rth@twiddle.net, kwolf@redhat.com, berrange@redhat.com, mreitz@redhat.com, ross.lagerwall@citrix.com, marcandre.lureau@gmail.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Hello, This is the v11 of the patchset. Thank you very much for the review of the v10 of the series. We are glad to hear the patchset is getting in a better shape. We made changes to the following patches in this series. [PATCH v10 06/19] multi-process: define MPQemuMsg format and transmission functions [PATCH v10 08/19] multi-process: Associate fd of a PCIDevice with its object [PATCH v10 10/19] multi-process: introduce proxy object To touch upon the history of this project, we posted the Proof Of Concept patches before the BoF session in 2018. Subsequently, we posted 9 versions on the qemu-devel mailist. You can find them by following the links below ([1] - [9]). Following people contributed to the design and implementation of this project: Jagannathan Raman Elena Ufimtseva John G Johnson Stefan Hajnoczi Konrad Wilk Kanth Ghatraju We would like to thank QEMU community for your feedback in the design and implementation of this project. Qemu wiki page: https://wiki.qemu.org/Features/MultiProcessQEMU For the full concept writeup about QEMU multi-process, please refer to docs/devel/qemu-multiprocess.rst. Also see docs/qemu-multiprocess.txt for usage information. We welcome all your ideas, concerns, and questions for this patchset. [POC]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg566538.html [1]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg602285.html [2]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg624877.html [3]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg642000.html [4]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg655118.html [5]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg682429.html [6]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg697484.html [7]: https://patchew.org/QEMU/cover.1593273671.git.elena.ufimtseva@oracle.com/ [8]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg727007.html [9]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg734275.html [10]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg747638.html Elena Ufimtseva (7): multi-process: add qio channel function to transmit multi-process: define MPQemuMsg format and transmission functions multi-process: introduce proxy object multi-process: add proxy communication functions multi-process: Forward PCI config space acceses to the remote process multi-process: perform device reset in the remote process multi-process: add configure and usage information Jagannathan Raman (11): memory: alloc RAM from file at offset multi-process: Add config option for multi-process QEMU multi-process: setup PCI host bridge for remote device multi-process: setup a machine object for remote device process multi-process: Initialize message handler in remote device multi-process: Associate fd of a PCIDevice with its object multi-process: setup memory manager for remote device multi-process: PCI BAR read/write handling for proxy & remote endpoints multi-process: Synchronize remote memory multi-process: create IOHUB object to handle irq multi-process: Retrieve PCI info from remote process John G Johnson (1): multi-process: add the concept description to docs/devel/qemu-multiprocess MAINTAINERS | 26 ++ backends/hostmem-memfd.c | 2 +- configure | 10 + docs/devel/index.rst | 1 + docs/devel/multi-process.rst | 966 ++++++++++++++++++++++++++++++++++++++++ docs/multi-process.rst | 67 +++ hw/i386/meson.build | 5 + hw/i386/remote-iohub.c | 123 +++++ hw/i386/remote-memory.c | 58 +++ hw/i386/remote-msg.c | 241 ++++++++++ hw/i386/remote-obj.c | 154 +++++++ hw/i386/remote.c | 79 ++++ hw/misc/ivshmem.c | 3 +- hw/pci-host/meson.build | 1 + hw/pci-host/remote.c | 75 ++++ hw/pci/memory-sync.c | 210 +++++++++ hw/pci/meson.build | 3 + hw/pci/proxy.c | 377 ++++++++++++++++ include/exec/memory.h | 2 + include/exec/ram_addr.h | 2 +- include/hw/i386/remote-iohub.h | 42 ++ include/hw/i386/remote-memory.h | 19 + include/hw/i386/remote-obj.h | 42 ++ include/hw/i386/remote.h | 40 ++ include/hw/pci-host/remote.h | 31 ++ include/hw/pci/memory-sync.h | 27 ++ include/hw/pci/pci_ids.h | 3 + include/hw/pci/proxy.h | 53 +++ include/io/channel.h | 24 + include/io/mpqemu-link.h | 98 ++++ include/qemu/mmap-alloc.h | 3 +- io/channel.c | 45 ++ io/meson.build | 2 + io/mpqemu-link.c | 303 +++++++++++++ meson.build | 1 + scripts/mpqemu-launcher.py | 49 ++ softmmu/memory.c | 3 +- softmmu/physmem.c | 11 +- util/mmap-alloc.c | 7 +- util/oslib-posix.c | 2 +- 40 files changed, 3197 insertions(+), 13 deletions(-) create mode 100644 docs/devel/multi-process.rst create mode 100644 docs/multi-process.rst create mode 100644 hw/i386/remote-iohub.c create mode 100644 hw/i386/remote-memory.c create mode 100644 hw/i386/remote-msg.c create mode 100644 hw/i386/remote-obj.c create mode 100644 hw/i386/remote.c create mode 100644 hw/pci-host/remote.c create mode 100644 hw/pci/memory-sync.c create mode 100644 hw/pci/proxy.c create mode 100644 include/hw/i386/remote-iohub.h create mode 100644 include/hw/i386/remote-memory.h create mode 100644 include/hw/i386/remote-obj.h create mode 100644 include/hw/i386/remote.h create mode 100644 include/hw/pci-host/remote.h create mode 100644 include/hw/pci/memory-sync.h create mode 100644 include/hw/pci/proxy.h create mode 100644 include/io/mpqemu-link.h create mode 100644 io/mpqemu-link.c create mode 100755 scripts/mpqemu-launcher.py