[kvm-unit-tests PATCH v3 0/5] CSS Mesurement Block

[Pierre Morel <pmorel@linux.ibm.com>]

We tests the update of the Mesurement Block (MB) format 0
and format 1 using a serie of senseid requests.

The MB format 1 is only provided if the Extended mesurement Block
feature is available.
This feature is exposed by the CSS characteristics general features
stored by the Store Channel Subsystem Characteristics CHSC command,
consequently, we implement the CHSC instruction call and the SCSC CHSC
command.

In order to ease the writing of new tests using:
- interrupt
- enablement of a subchannel
- multiple I/O on a subchannel

We do the following simplifications:
- we create a CSS initialization routine
- we register the I/O interrupt handler on CSS initialization
- we do not enable or disable a subchannel in the senseid test,
  assuming this test is done after the enable test, this allows
  to create traffic using the SSCH used by senseid.
- we add a css_enabled() function to test if a subchannel is enabled.

Regards,
Pierre

Pierre Morel (5):
  s390x: css: Store CSS Characteristics
  s390x: css: simplifications of the tests
  s390x: css: implementing Set CHannel Monitor
  s390x: css: testing measurement block format 0
  s390x: css: testing measurement block format 1

 lib/s390x/css.h     | 117 ++++++++++++++++++-
 lib/s390x/css_lib.c | 270 ++++++++++++++++++++++++++++++++++++++++++--
 s390x/css.c         | 214 +++++++++++++++++++++++++++++++----
 3 files changed, 568 insertions(+), 33 deletions(-)

-- 
2.25.1

changelog:

from v2:

- stop measurement before freeing memory
  (Connie)

- added a css_disable_mb()
  (Connie)

- several rewriting of comments and commits
  (Connie)

- modified eroneous test for MB index for fmt0
  (Pierre)

- modified eroneous test for unaligned MBO for fmt1
  (Pierre)

- several small coding style issues corrected
  (Pierre)

from v1:

- check the return code of CHSC
  (Connie)

- reporting in css_init
  (Connie)

- added braces when a loop contains several statement
  (Thomas)

- changed retval to success in boolean function
  (Thomas)

- suppress goto retries
  (thomas)

- rewording and use correct return types in css_enabled
  (Janosch)