Re: [PATCH] tests/avocado/reverse_debugging: Disable the ppc64 tests by default

["Nicholas Piggin" <npiggin@gmail.com>]

On Thu Nov 16, 2023 at 5:09 PM AEST, Thomas Huth wrote:
> On 16/11/2023 02.15, Nicholas Piggin wrote:
> > On Thu Nov 16, 2023 at 3:22 AM AEST, Daniel P. Berrangé wrote:
> >> On Wed, Nov 15, 2023 at 01:14:53PM +0000, Daniel P. Berrangé wrote:
> ...
> >> The Machine class doesn't know if anything will ever use the console,
> >> so as is the change is unsafe.
> >>
> >> The original goal of John's change was to guarantee we capture early
> >> boot messages as some test need that.
> >>
> >> I think we need to be able to have a flag to say whether the caller needs
> >> an "early console" facility, and only use the pre-opened FD passing for
> >> that case. Tests we need early console will have to ask for that guarantee
> >> explicitly.
> > 
> > The below patch makes this test work. Maybe as a quick fix it is
> > better than disabling the test.
> > 
> > I guess we still have a problem if a test invokes vm.launch()
> > directly without subsequently waiting for a console pattern or
> > doing something with the console as you say. Your suggesstion is
> > add something like vm.launch(console=True) ?
> > 
> > Thanks,
> > Nick
> > ---
> > 
> > diff --git a/tests/avocado/reverse_debugging.py b/tests/avocado/reverse_debugging.py
> > index fc47874eda..128d85bc0e 100644
> > --- a/tests/avocado/reverse_debugging.py
> > +++ b/tests/avocado/reverse_debugging.py
> > @@ -12,6 +12,7 @@
> >   
> >   from avocado import skipIf
> >   from avocado_qemu import BUILD_DIR
> > +from avocado.utils import datadrainer
> >   from avocado.utils import gdb
> >   from avocado.utils import process
> >   from avocado.utils.network.ports import find_free_port
> > @@ -52,6 +53,10 @@ def run_vm(self, record, shift, args, replay_path, image_path, port):
> >           if args:
> >               vm.add_args(*args)
> >           vm.launch()
> > +        console_drainer = datadrainer.LineLogger(vm.console_socket.fileno(),
> > +                                    logger=self.log.getChild('console'),
> > +                                    stop_check=(lambda : not vm.is_running()))
> > +        console_drainer.start()
> >           return vm
> >   
> >       @staticmethod
>
> Tested-by: Thomas Huth <thuth@redhat.com>

Thank you.

> Could you please send this as a proper patch, with a S-o-b line, and a short 
> comment in front of the newly added code explaining it?

Yep, just testing it now. Should have it sent out in an hour or two.

Thanks,
Nick