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Re: [PATCH v20 00/20] Initial support for multi-process Qemu
From: |
Stefan Hajnoczi |
Subject: |
Re: [PATCH v20 00/20] Initial support for multi-process Qemu |
Date: |
Thu, 21 Jan 2021 17:07:36 +0000 |
On Tue, Jan 19, 2021 at 03:28:17PM -0500, Jagannathan Raman wrote:
> 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 <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 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
>
> --
> 1.8.3.1
>
I will merge this when Daniel Berrange has reviewed it.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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- [PATCH v20 15/20] multi-process: Forward PCI config space acceses to the remote process, (continued)
- [PATCH v20 15/20] multi-process: Forward PCI config space acceses to the remote process, Jagannathan Raman, 2021/01/19
- [PATCH v20 17/20] multi-process: Synchronize remote memory, Jagannathan Raman, 2021/01/19
- [PATCH v20 10/20] multi-process: Initialize message handler in remote device, Jagannathan Raman, 2021/01/19
- [PATCH v20 11/20] multi-process: Associate fd of a PCIDevice with its object, Jagannathan Raman, 2021/01/19
- [PATCH v20 13/20] multi-process: introduce proxy object, Jagannathan Raman, 2021/01/19
- [PATCH v20 14/20] multi-process: add proxy communication functions, Jagannathan Raman, 2021/01/19
- [PATCH v20 16/20] multi-process: PCI BAR read/write handling for proxy & remote endpoints, Jagannathan Raman, 2021/01/19
- [PATCH v20 18/20] multi-process: create IOHUB object to handle irq, Jagannathan Raman, 2021/01/19
- [PATCH v20 19/20] multi-process: Retrieve PCI info from remote process, Jagannathan Raman, 2021/01/19
- [PATCH v20 20/20] multi-process: perform device reset in the remote process, Jagannathan Raman, 2021/01/19
- Re: [PATCH v20 00/20] Initial support for multi-process Qemu,
Stefan Hajnoczi <=