[RFC PATCH 0/2] qtest: Log verbosity changes

[Fabiano Rosas]

Hi,

This series silences QEMU stderr unless the QTEST_LOG variable is set
and silences -qtest-log unless both QTEST_LOG and gtest's --verbose
flag is passed.

This was motivated by Peter Maydell's ask to suppress deprecation
warn_report messages from the migration-tests and by my own
frustration over noisy output from qtest.

I'm open to suggestions on how to better implement this. One option
would be to ignore g_test_verbose() and have QTEST_LOG levels
(1,2,3,...), but before I get too deep into that, here are the raw
patches for discussion.

Note that it's not possible to use glib's g_test_trap_assert_stderr()
to silence the warnings because when using any verbose option the
output of QEMU, libqmp and qtest-log gets interleaved on stderr,
failing the match.

Thanks

CI run: https://gitlab.com/farosas/qemu/-/pipelines/1442270209

Fabiano Rosas (2):
  tests/qtest: Mute QEMU stderr
  tests/qtest: Mute -qtest-log

 tests/qtest/libqtest.c              | 8 +++++---
 tests/qtest/test-x86-cpuid-compat.c | 6 ++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

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2.35.3