[kvm-unit-tests,v1,0/6] Testing SSCH, CSCH and HSCH for errors

Message

Pierre Morel March 18, 2021, 1:26 p.m. UTC

The goal of this series is to test some of the I/O instructions,
SSCH, CSCH and HSCH for errors like invalid parameters, addressing,
timing etc.
Testing about timing in QEMU/KVM is truncated to sending an instruction
before the status of the preceding instruction is cleared due ton
the QEMU serialization.

To be able to achieve these tests we we need to enhance the testing
environment with:

- new definitions for the SCSW control bits
- a new function to disable a subchannel
- handling multiple interrupts
- checking the reason of the interrupts
- deferring tsch outside of the interrupt routine

regards,
Pierre

Pierre Morel (6):
  s390x: lib: css: disabling a subchannel
  s390x: lib: css: SCSW bit definitions
  s390x: lib: css: upgrading IRQ handling
  s390x: lib: css: add expectations to wait for interrupt
  s390x: css: testing ssch error response
  s390x: css: testing clear and halt subchannel

 lib/s390x/css.h     |  55 ++++++++-
 lib/s390x/css_lib.c | 197 ++++++++++++++++++++++++++-----
 s390x/css.c         | 276 +++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 498 insertions(+), 30 deletions(-)