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Tue, 19 Jan 2021 20:28:43 +0000 From: Jagannathan Raman To: qemu-devel@nongnu.org Subject: [PATCH v20 00/20] Initial support for multi-process Qemu Date: Tue, 19 Jan 2021 15:28:17 -0500 Message-Id: X-Mailer: git-send-email 1.8.3.1 X-Originating-IP: [209.17.40.38] X-ClientProxiedBy: DM6PR01CA0007.prod.exchangelabs.com (2603:10b6:5:296::12) To BYAPR10MB2744.namprd10.prod.outlook.com (2603:10b6:a02:ae::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from jaraman-bur-1.us.oracle.com (209.17.40.38) by DM6PR01CA0007.prod.exchangelabs.com (2603:10b6:5:296::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3784.11 via Frontend Transport; Tue, 19 Jan 2021 20:28:40 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2817b49e-ff50-4ea2-8632-08d8bcb8d087 X-MS-TrafficTypeDiagnostic: BYAPR10MB3349: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:10000; 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envelope-from=jag.raman@oracle.com; helo=userp2130.oracle.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-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, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, This is the v20 of the patchset. This version has the following changes: [PATCH v18 08/20] io: add qio_channel_readv_full_all_eof & qio_channel_readv_full_all helpers - Considers fds as part of the "data" for both qio_channel_readv_full_all_eof() & qio_channel_readv_full_all(). - Addresses some of the error scenarios which were not addressed in the previous revisions To touch upon the history of this project, we posted the Proof Of Concept patches before the BoF session in 2018. Subsequently, we have posted 19 versions on the qemu-devel mailing list. You can find them by following the links below ([1] - [19]). 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 you 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. Thank you for reviewing this series! [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 [11]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg750972.html [12]: https://patchew.org/QEMU/cover.1606853298.git.jag.raman@oracle.com/ [13]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg766825.html [14]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg768376.html [15]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg769178.html [16]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg771455.html [17]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg772512.html [18]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg772602.html [19]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg772980.html Elena Ufimtseva (8): multi-process: add configure and usage information io: add qio_channel_writev_full_all helper io: add qio_channel_readv_full_all_eof & qio_channel_readv_full_all helpers 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 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 docs/devel/index.rst | 1 + docs/devel/multi-process.rst | 966 ++++++++++++++++++++++++++++++ docs/multi-process.rst | 64 ++ configure | 10 + meson.build | 5 +- hw/remote/trace.h | 1 + include/exec/memory.h | 2 + include/exec/ram_addr.h | 2 +- include/hw/pci-host/remote.h | 30 + include/hw/pci/pci_ids.h | 3 + include/hw/remote/iohub.h | 42 ++ include/hw/remote/machine.h | 38 ++ include/hw/remote/memory.h | 19 + include/hw/remote/mpqemu-link.h | 99 +++ include/hw/remote/proxy-memory-listener.h | 28 + include/hw/remote/proxy.h | 48 ++ include/io/channel.h | 78 +++ include/qemu/mmap-alloc.h | 4 +- include/sysemu/iothread.h | 6 + backends/hostmem-memfd.c | 2 +- hw/misc/ivshmem.c | 3 +- hw/pci-host/remote.c | 75 +++ hw/remote/iohub.c | 119 ++++ hw/remote/machine.c | 80 +++ hw/remote/memory.c | 65 ++ hw/remote/message.c | 230 +++++++ hw/remote/mpqemu-link.c | 267 +++++++++ hw/remote/proxy-memory-listener.c | 227 +++++++ hw/remote/proxy.c | 379 ++++++++++++ hw/remote/remote-obj.c | 203 +++++++ io/channel.c | 121 +++- iothread.c | 6 + softmmu/memory.c | 3 +- softmmu/physmem.c | 11 +- util/mmap-alloc.c | 7 +- util/oslib-posix.c | 2 +- Kconfig.host | 4 + MAINTAINERS | 24 + hw/Kconfig | 1 + hw/meson.build | 1 + hw/pci-host/Kconfig | 3 + hw/pci-host/meson.build | 1 + hw/remote/Kconfig | 4 + hw/remote/meson.build | 13 + hw/remote/trace-events | 4 + 45 files changed, 3265 insertions(+), 36 deletions(-) create mode 100644 docs/devel/multi-process.rst create mode 100644 docs/multi-process.rst create mode 100644 hw/remote/trace.h create mode 100644 include/hw/pci-host/remote.h create mode 100644 include/hw/remote/iohub.h create mode 100644 include/hw/remote/machine.h create mode 100644 include/hw/remote/memory.h create mode 100644 include/hw/remote/mpqemu-link.h create mode 100644 include/hw/remote/proxy-memory-listener.h create mode 100644 include/hw/remote/proxy.h create mode 100644 hw/pci-host/remote.c create mode 100644 hw/remote/iohub.c create mode 100644 hw/remote/machine.c create mode 100644 hw/remote/memory.c create mode 100644 hw/remote/message.c create mode 100644 hw/remote/mpqemu-link.c create mode 100644 hw/remote/proxy-memory-listener.c create mode 100644 hw/remote/proxy.c create mode 100644 hw/remote/remote-obj.c create mode 100644 hw/remote/Kconfig create mode 100644 hw/remote/meson.build create mode 100644 hw/remote/trace-events Reviewed-by: Stefan Hajnoczi