Markus Armbruster <arm...@redhat.com> writes: > From: Peter Krempa <pkre...@redhat.com> > > Similarly to features for struct types introduce the feature flags also > for commands. This will allow notifying management layers of fixes and > compatible changes in the behaviour of a command which may not be > detectable any other way. > > The changes were heavily inspired by commit 6a8c0b51025. > > Signed-off-by: Peter Krempa <pkre...@redhat.com> > Reviewed-by: Markus Armbruster <arm...@redhat.com> > Signed-off-by: Markus Armbruster <arm...@redhat.com> > --- > docs/devel/qapi-code-gen.txt | 7 ++++--- > qapi/introspect.json | 6 +++++- > scripts/qapi/commands.py | 3 ++- > scripts/qapi/doc.py | 3 ++- > scripts/qapi/expr.py | 35 +++++++++++++++++++--------------- > scripts/qapi/introspect.py | 7 ++++++- > scripts/qapi/schema.py | 22 +++++++++++++++++---- > tests/qapi-schema/test-qapi.py | 3 ++- > 8 files changed, 59 insertions(+), 27 deletions(-) > > diff --git a/docs/devel/qapi-code-gen.txt b/docs/devel/qapi-code-gen.txt > index 64d9e4c6a9..637fa49977 100644 > --- a/docs/devel/qapi-code-gen.txt > +++ b/docs/devel/qapi-code-gen.txt > @@ -640,9 +640,10 @@ 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 the extension is available. > > -For this purpose, a list of features can be specified for a struct type. > -This is exposed to the client as a list of string, where each string > -signals that this build of QEMU shows a certain behaviour. > +For this purpose, a list of features can be specified for a command or > +struct type. This is exposed to the client as a list of strings, > +where each string signals that this build of QEMU shows a certain > +behaviour. > > Each member of the 'features' array defines a feature. It can either > be { 'name': STRING, '*if': COND }, or STRING, which is shorthand for
Squashing in missing syntax update: diff --git a/docs/devel/qapi-code-gen.txt b/docs/devel/qapi-code-gen.txt index 637fa49977..45c93a43cc 100644 --- a/docs/devel/qapi-code-gen.txt +++ b/docs/devel/qapi-code-gen.txt @@ -457,7 +457,8 @@ Syntax: '*gen': false, '*allow-oob': true, '*allow-preconfig': true, - '*if': COND } + '*if': COND, + '*features': FEATURES } Member 'command' names the command. [...]