[kvm-unit-tests PATCH v10 0/2] S390x: CPU Topology Information

[Pierre Morel <pmorel@xxxxxxxxxxxxx>]

Hi,

new version of the kvm-unit-test s390x CPU topology series.

0. what is new in this new spin
-------------------------------

- the configuration tested in unittests.cfg is compatible with current
  QEMU. A later patch will be needed to use full topology when QEMU
  patches are mainline.
- one of the tested configuration using 248 processors will failed
  until SCLP bug is corrected
- use of -cpu max instead of z14

1. what is done
---------------

- First part is checking PTF errors, for KVM and LPAR

- Second part is checking PTF polarization change and STSI
  with the cpu topology including drawers and books.
  This tests are run for KVM only.

To run these tests under KVM successfully you need Linux 6.0
or newer.

Note that Fedora-35 already has the CPU Topology backport for Linux.

To start the test in KVM just do:

# ./run_tests.sh topology
for the topology ptf tests or for the topology stsi tests
# ./run_tests.sh topology-2

or something like:

# ./s390x-run s390x/topology.elf \
	-cpu max,ctop=on \
	-smp 5,sockets=4,cores=4,maxcpus=16 \
	-append '-sockets 4 -cores 4'

Of course the declaration of the number of drawers, books, socket and
core must be coherent between -smp and -append arguments.

Regards,
Pierre

Pierre Morel (2):
  s390x: topology: Check the Perform Topology Function
  s390x: topology: Checking Configuration Topology Information

 lib/s390x/sclp.c    |   6 +
 lib/s390x/sclp.h    |   4 +-
 lib/s390x/stsi.h    |  36 ++++
 s390x/Makefile      |   1 +
 s390x/topology.c    | 516 ++++++++++++++++++++++++++++++++++++++++++++
 s390x/unittests.cfg |   7 +
 6 files changed, 569 insertions(+), 1 deletion(-)
 create mode 100644 s390x/topology.c

-- 
2.31.1

new in v10:

- unitests now compatible with current QEMU
  (Janosch)

- use of -cpu max instead of z14
  (Janosch, Thomas)

- colapse prefix_push and report_info
  (Nico)

new in v9:

- use report_fail instead of report(0,...
  (Nico)

- add 2 more configurations in unittests.cfg
  (Nico)

new in v8:

- define PTF_INVALID_FUNCTION
  (Claudio)

- test every single bits for specification in the ptf instruction
  (Claudio)

- test vertical polarization twice
  (Claudio)

- add an assert(read_info)
  (Nico)

- changed skips
  (Nico)


new in v7:

- better checks using device attributes on commandline
  (Pierre)
- use builtin to get the number of CPU in the TLE mask
  (Thomas)
- use Elvis (not dead)
  (Thomas)
- reset before tests
  (Nina)
- splitting test_ptf in small functions
  (Thomas)
- check every ptf function code for program check
  (Nina)
- Test made on LPAR
  (Janosch)
- use a single page for SYSIB
  (Thomas)
- abort on wrong parameter
  (Thomas)
- implement SYSIB check with a recursive funtion
  (Nina)
- diverse little changes (naming, clearer checks
  (Nina, Thomas)