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Fri, 18 Dec 2020 05:19:49 +0000 Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0BI5JlIR024773; Fri, 18 Dec 2020 05:19:47 GMT Received: from flaka (/10.159.131.68) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 17 Dec 2020 21:19:47 -0800 Date: Thu, 17 Dec 2020 21:19:43 -0800 From: Elena Ufimtseva To: qemu-devel@nongnu.org Subject: Re: [PATCH v14 00/21] Initial support for multi-process Qemu Message-ID: <20201218051943.GA111182@flaka> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9838 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 spamscore=0 bulkscore=0 suspectscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012180037 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9838 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 mlxlogscore=999 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 malwarescore=0 priorityscore=1501 phishscore=0 mlxscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012180037 Received-SPF: pass client-ip=156.151.31.86; envelope-from=elena.ufimtseva@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, 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: fam@euphon.net, john.g.johnson@oracle.com, swapnil.ingle@nutanix.com, mst@redhat.com, kraxel@redhat.com, jag.raman@oracle.com, quintela@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, pbonzini@redhat.com, kwolf@redhat.com, berrange@redhat.com, mreitz@redhat.com, ross.lagerwall@citrix.com, marcandre.lureau@gmail.com, thanos.makatos@nutanix.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Dec 17, 2020 at 07:57:47PM -0800, elena.ufimtseva@oracle.com wrote: > From: Elena Ufimtseva > > Hi > For some reason the patchset was not sent fully and only few patches made trough. I am resending the series with prefix in the subject "[PATCH v14 RESEND... " I am sorry for this inconvenience. Elena > This is the v14 of the patchset. Thank you very much for reviewing v13 and > sharing your feedback. > > We have addressed all the comments from the v13 review with changelog below: > > - [PATCH v14 05/21] multi-process: Add config option for multi-process QEMU > add config option to disable the feature (--disable-multiprocess). > > - [PATCH v14 08/21] multi-process: add qio channel write function > - [PATCH v14 09/21] multi-process: add qio channel read function > refactor code in qio channel and split in two for read and write. > > - [PATCH v14 04/21] socket: export socket_get_fd() function > export socket_get_fd() and use in remote process with some > modifications. > > In addition, we will be sending a follow-up patch with the acceptance > test that can be used to verify that this feature is working correctly. > > From the v13 review few items are TODOs: > - Prefix log messages with PID in the logging subsystem. > - Refactor the MemoryListener code in vfio-user and multi-process code > to avoid logic duplication. > > 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 13 > versions on the qemu-devel mailing list. You can find them by following the > links below ([1] - [13]). 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 the 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. > > Thank you for reviewing these 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 > > Elena Ufimtseva (8): > multi-process: add configure and usage information > multi-process: add qio channel write function > multi-process: add qio channel read function > 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 (12): > memory: alloc RAM from file at offset > socket: export socket_get_fd() function > 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 | 3 + > hw/remote/trace.h | 1 + > include/exec/memory.h | 2 + > include/exec/ram_addr.h | 2 +- > include/hw/pci-host/remote.h | 31 + > include/hw/pci/pci_ids.h | 3 + > include/hw/remote/iohub.h | 42 + > include/hw/remote/machine.h | 40 + > 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 | 52 ++ > include/io/channel.h | 50 ++ > include/qemu/mmap-alloc.h | 4 +- > include/qemu/sockets.h | 1 + > 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 | 371 +++++++++ > hw/remote/remote-obj.c | 194 +++++ > io/channel.c | 88 +- > iothread.c | 6 + > softmmu/memory.c | 3 +- > softmmu/physmem.c | 11 +- > stubs/monitor.c | 2 +- > tests/test-util-sockets.c | 2 +- > util/mmap-alloc.c | 7 +- > util/oslib-posix.c | 2 +- > util/qemu-sockets.c | 18 +- > 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 + > 49 files changed, 3202 insertions(+), 49 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 > > -- > 2.25.GIT >