[kvm-unit-tests PATCH v2 0/4] s390x: add migration test support

[Nico Boehr <nrb@linux.ibm.com>]

Changelog from v1:
----
- Instead of the selftest, do an actual migration tests of guarded storage and
  vector registers. To have access to gs and vector related defines, this now
  depends on my SIGP store adtl status series
  ("[kvm-unit-tests PATCH v3 0/2] s390x: Add tests for SIGP store adtl status")
- Lower case const ints (Thanks Janosch)
- Use define instead of magic number (Thanks Thomas)
- Add missing "ret = 0" (Thanks Thomas)
- Minor typos and style fixes

This series depends on my SIGP store additional status series to have access to
the guarded-storage and vector related defines
("[kvm-unit-tests PATCH v3 0/2] s390x: Add tests for SIGP store adtl status").

Add migration test support for s390x.

arm and powerpc already support basic migration tests.

If a test is in the migration group, it can print "migrate" on its console. This
will cause it to be migrated to a new QEMU instance. When migration is finished,
the test will be able to read a newline from its standard input.

We need the following pieces for this to work under s390x:

* read support for the sclp console. This can be very basic, it doesn't even
  have to read anything useful, we just need to know something happened on
  the console.
* s390/run adjustments to call the migration helper script.

This series adds basic migration tests for s390x, which I plan to extend
further.

Nico Boehr (4):
  lib: s390x: add support for SCLP console read
  s390x: add support for migration tests
  s390x: don't run migration tests under PV
  s390x: add basic migration test

 lib/s390x/sclp-console.c |  79 ++++++++++++++++--
 lib/s390x/sclp.h         |   8 ++
 s390x/Makefile           |   2 +
 s390x/migration.c        | 172 +++++++++++++++++++++++++++++++++++++++
 s390x/run                |   7 +-
 s390x/unittests.cfg      |   5 ++
 scripts/s390x/func.bash  |   2 +-
 7 files changed, 267 insertions(+), 8 deletions(-)
 create mode 100644 s390x/migration.c

-- 
2.31.1