qemu/scripts
Kevin Wolf 6a8c0b5102 qapi: Add feature flags to struct types
Sometimes, the behaviour of QEMU changes without a change in the QMP
syntax (usually by allowing values or operations that previously
resulted in an error). QMP clients may still need to know whether
they can rely on the changed behavior.

Let's add feature flags to the QAPI schema language, so that we can make
such changes visible with schema introspection.

An example for a schema definition using feature flags looks like this:

    { 'struct': 'TestType',
      'data': { 'number': 'int' },
      'features': [ 'allow-negative-numbers' ] }

Introspection information then looks like this:

    { "name": "TestType", "meta-type": "object",
      "members": [
          { "name": "number", "type": "int" } ],
      "features": [ "allow-negative-numbers" ] }

This patch implements feature flags only for struct types. We'll
implement them more widely as needed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20190606153803.5278-2-armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-06-12 18:34:26 +02:00
..
coccinelle qemu-iotests: convert pwd and $(pwd) to $PWD 2018-11-19 10:08:19 -06:00
kvm python: futurize -f libfuturize.fixes.fix_print_with_import 2018-06-08 14:39:24 -03:00
modules Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qapi qapi: Add feature flags to struct types 2019-06-12 18:34:26 +02:00
qemu-guest-agent qemu-guest-agent: freeze-hook to ignore dpkg files as well 2018-08-23 18:46:25 +02:00
qemugdb scripts/qemugdb: re-license timers.py to GPLv2 or later 2019-03-12 08:04:22 +01:00
qmp qmp-shell: fix nested json regression 2019-03-11 10:22:31 -03:00
tracetool Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
travis travis: add gcovr summary for GCOV build 2018-07-05 15:59:41 +01:00
analyse-9p-simpletrace.py python: futurize -f libfuturize.fixes.fix_print_with_import 2018-06-08 14:39:24 -03:00
analyse-locks-simpletrace.py scripts: Remove unused python imports 2019-01-17 17:52:40 -02:00
analyze-inclusions Move target-* CPU file into a target/ folder 2016-12-20 21:52:12 +01:00
analyze-migration.py scripts: Remove unused python imports 2019-01-17 17:52:40 -02:00
archive-source.sh build-sys: move slirp as git submodule project 2019-05-03 00:15:37 +02:00
checkpatch.pl checkpatch: allow SPDX-License-Identifier 2019-06-03 14:03:01 +02:00
clean-header-guards.pl scripts/clean-header-guards: Fix handling of trailing comments 2019-06-12 13:20:20 +02:00
clean-includes scripts/clean-includes: added duplicate #include check 2016-10-28 18:17:23 +03:00
cleanup-trace-events.pl scripts/cleanup-trace-events: Update for current practice 2019-03-22 16:18:07 +00:00
cocci-macro-file.h QEMU_PACKED: Remove gcc_struct attribute in Windows non x86 targets 2019-05-07 12:55:02 +01:00
coverity-model.c coverity-model: Fix replay_get_byte() 2018-07-05 15:09:52 +02:00
create_config Revert "Makefile: Rename TARGET_DIRS to TARGET_LIST" 2018-07-05 15:59:41 +01:00
decodetree.py decodetree: Add DisasContext argument to !function expanders 2019-05-06 11:18:34 -07:00
device-crash-test Introduce a Python module structure 2019-02-22 14:07:01 -05:00
disas-objdump.pl scripts: Switch to more portable Perl shebang 2017-05-10 10:19:24 +03:00
dump-guest-memory.py dump: Set correct vaddr for ELF dump 2019-02-06 15:51:12 +01:00
extract-vsssdk-headers Add a script to extract VSS SDK headers on POSIX system 2013-09-09 14:17:56 -05:00
feature_to_c.sh scripts: Use $(..) instead of deprecated .. 2016-06-07 18:19:23 +03:00
fix-multiline-comments.sh scripts: add script to convert multiline comments into 4-line format 2019-01-11 15:46:55 +01:00
get_maintainer.pl get_maintainer: use 'https://' instead of 'git://' 2018-11-12 11:26:02 +00:00
git-submodule.sh git-submodule.sh: Modern shell scripting (use $() instead of ``) 2018-10-16 18:34:19 +02:00
git.orderfile add scripts/git.orderfile 2017-07-20 09:56:41 +02:00
hxtool qemu-options: Remove stray colons from output of --help 2017-12-20 09:04:27 +01:00
make-release scripts/make-release: Stop shipping u-boot source as a tarball 2019-03-18 15:40:00 +00:00
minikconf.py minikconf: fix parser typo 2019-03-20 11:44:13 +01:00
qapi-gen.py qapi: Lift error reporting from QAPISchema.__init__() to callers 2018-03-02 13:14:09 -06:00
qemu-binfmt-conf.sh qemu-binfmt-conf.sh: add x86_64 target 2018-08-17 13:56:33 +02:00
qemu-gdb.py qemugdb: fix licensing 2019-03-11 16:55:52 +01:00
qemu-trace-stap trace: add ability to do simple printf logging via systemtap 2019-01-24 14:16:56 +00:00
qemu-trace-stap.texi trace: add ability to do simple printf logging via systemtap 2019-01-24 14:16:56 +00:00
refresh-pxe-roms.sh roms: rewrite scripts/refresh-pxe-roms.sh 2013-09-30 09:44:35 +02:00
render_block_graph.py Introduce a Python module structure 2019-02-22 14:07:01 -05:00
replay-dump.py scripts/replay-dump.py: fix utf-8 mangling 2019-01-17 17:52:40 -02:00
shaderinclude.pl scripts: Switch to more portable Perl shebang 2017-05-10 10:19:24 +03:00
show-fixed-bugs.sh show-fixed-bugs.sh: Modern shell scripting (use $() instead of ``) 2018-10-16 18:34:19 +02:00
signrom.py python: futurize -f libfuturize.fixes.fix_print_with_import 2018-06-08 14:39:24 -03:00
simpletrace.py scripts: Remove unused python imports 2019-01-17 17:52:40 -02:00
switch-timer-api scripts: Switch to more portable Perl shebang 2017-05-10 10:19:24 +03:00
tap-driver.pl tap: flush STDOUT on newline 2019-02-05 16:50:16 +01:00
tap-merge.pl tap: flush STDOUT on newline 2019-02-05 16:50:16 +01:00
texi2pod.pl maint: Allow for EXAMPLES in texi2pod 2019-01-21 15:49:51 -06:00
tracetool.py scripts: Remove unused python imports 2019-01-17 17:52:40 -02:00
update-linux-headers.sh update-linux-headers: handle new header file 2019-05-21 16:56:30 +02:00
vmstate-static-checker.py python: futurize -f libfuturize.fixes.fix_next_call 2018-06-08 14:39:24 -03:00