Hi,

This is a small subset of testing fixes to improve the stability of
the CI. The first ensure all jobs have a timeout (default 120s) and
then we have Thomas'  excellent work to speed up the migration test
which was the source of a number of gitlab timeouts. Finally a little
bit of extra manual text to point users in the right direction when
defining block devices.

Only one patch needs review before the PR:

 - tests/avocado: push default timeout to QemuBaseTest
   
Alex Bennée (2):
  tests/avocado: push default timeout to QemuBaseTest
  qemu-options: try and clarify preferred block semantics

Thomas Huth (4):
  tests/qtest/migration-test: Only wait for serial output where
    migration succeeds
  tests/migration/aarch64: Speed up the aarch64 migration test
  tests/migration/i386: Speed up the i386 migration test (when using
    TCG)
  tests/qtest/migration-test: Remove duplicated test_postcopy from the
    test plan

 tests/migration/aarch64/a-b-kernel.h   | 10 +++++-----
 tests/migration/i386/a-b-bootblock.h   | 12 ++++++------
 tests/qtest/migration-test.c           |  5 +++--
 qemu-options.hx                        | 13 +++++++++++++
 tests/avocado/avocado_qemu/__init__.py |  5 ++++-
 tests/migration/aarch64/a-b-kernel.S   |  3 +--
 tests/migration/i386/a-b-bootblock.S   |  1 +
 7 files changed, 33 insertions(+), 16 deletions(-)

-- 
2.30.2