[kvm-unit-tests,v2,0/4] lib: add function to request migration

Message

Nico Boehr Dec. 9, 2022, 1:48 p.m. UTC

v1->v2:
---
* arm: commit message gib->gic (thanks Andrew)
* arm: remove unneeded {} (thanks Andrew)
* s390x: make patch less intrusive (thanks Claudio)

With this series, I pick up a suggestion Claudio has brought up in my
CMM-migration series[1].

Migration tests can ask migrate_cmd to migrate them to a new QEMU
process. Requesting migration and waiting for completion is hence a
common pattern which is repeated all over the code base. Add a function
which does all of that to avoid repetition.

Since migrate_cmd currently can only migrate exactly once, this function
is called migrate_once() and is a no-op when it has been called before.
This can simplify the control flow, especially when tests are skipped.

[1] https://lore.kernel.org/kvm/20221125154646.5974cb52@p-imbrenda/

Nico Boehr (4):
  lib: add function to request migration
  powerpc: use migrate_once() in migration tests
  s390x: use migrate_once() in migration tests
  arm: use migrate_once() in migration tests

 arm/Makefile.common     |  1 +
 powerpc/Makefile.common |  1 +
 s390x/Makefile          |  1 +
 lib/migrate.h           |  9 ++++++++
 lib/migrate.c           | 34 ++++++++++++++++++++++++++++
 arm/debug.c             | 17 +++++---------
 arm/gic.c               | 49 ++++++++++++-----------------------------
 powerpc/sprs.c          |  4 ++--
 s390x/migration-cmm.c   | 25 +++++++--------------
 s390x/migration-sck.c   |  4 ++--
 s390x/migration-skey.c  | 15 +++++--------
 s390x/migration.c       |  7 ++----
 12 files changed, 84 insertions(+), 83 deletions(-)
 create mode 100644 lib/migrate.h
 create mode 100644 lib/migrate.c