On Thu, Dec 17, 2020 at 07:57:47PM -0800, elena.ufimtseva@oracle.com wrote:
> From: Elena Ufimtseva <elena.ufimtseva@oracle.com>
>
> 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 <jag.raman@oracle.com>
> Elena Ufimtseva <elena.ufimtseva@oracle.com>
> John G Johnson <john.g.johnson@oracle.com>
> Stefan Hajnoczi <stefanha@redhat.com>
> Konrad Wilk <konrad.wilk@oracle.com>
> Kanth Ghatraju <kanth.ghatraju@oracle.com>
>
> 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
>