[Qemu-devel] [PATCH 0/2] Dynamic module loading for block drivers

[Colin Lord <clord@redhat.com>]

This is a repost of some previous patches written by Marc Marí which
were also reposted by Richard Jones a few months ago. The original
series and reposted series are here:

https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg01995.html
https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01994.html

I've tried to take some of the previous feedback and integrate it into
this series. There are also a few things I haven't touched that were
previously mentioned though:

1) Denis Lunev suggested having block_module_load_one return the
loaded driver to reduce duplicated for loops in many of the functions
in block.c. I'd be happy to do this but wasn't completely sure how
error handling would happen in that case since currently the return
value is an integer error code. Would I switch to using the
error handling mechanisms provided in util/error.c?

2) In the past some debate was had about the design of the modules.
I haven't made any changes in this regard because it didn't seem a
conclusion had been reached. Some links for background:

Fam Zheng suggested a simpler parser:
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02201.html

Denis Lunev suggested a design more similar to Linux kernel modules:
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg05331.html

Richard Jones suggested reasons to keep things as is:
https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01994.html

Marc Mari (2):
  blockdev: Add dynamic generation of module_block.h
  blockdev: Add dynamic module loading for block drivers

 .gitignore                      |   1 +
 Makefile                        |  11 +++-
 block.c                         |  86 +++++++++++++++++++++++---
 include/qemu/module.h           |   3 +
 scripts/modules/module_block.py | 134 ++++++++++++++++++++++++++++++++++++++++
 util/module.c                   |  37 +++--------
 6 files changed, 233 insertions(+), 39 deletions(-)
 create mode 100644 scripts/modules/module_block.py

-- 
2.5.5