[kvm-unit-tests PATCH v4 0/4] s390x: add migration test support

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

Changelog from v3:
---
- Rename read_buf_end to read_buf_length (Thanks Janosch)

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