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 <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 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

-- 
1.8.3.1

On Thu, Oct 15, 2020 at 02:04:53PM -0400, Jagannathan Raman wrote:
> 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

I have reviewed these patches and posted a comment about a possible
buffer overflow.

Stefan