[kvm-unit-tests,v2,0/2] s390x: mvpg test

Message

Claudio Imbrenda Feb. 23, 2021, 2:24 p.m. UTC

A simple unit test for the MVPG instruction.

The timeout is set to 10 seconds because the test should complete in a
fraction of a second even on busy machines. If the test is run in VSIE
and the host of the host is not handling MVPG properly, the test will
probably hang.

Testing MVPG behaviour in VSIE is the main motivation for this test.

Anything related to storage keys is not tested.

v1->v2
* droppped patch 2 which introduced is_pgm();
* patch 1: replace a hardcoded value with the new macro SVC_LEAVE_PSTATE
* patch 2: clear_pgm_int() returns the old value, use that instad of is_pgm()

Claudio Imbrenda (2):
  s390x: introduce leave_pstate to leave userspace
  s390x: mvpg: simple test

 s390x/Makefile           |   1 +
 lib/s390x/asm/arch_def.h |   7 ++
 lib/s390x/interrupt.c    |  12 +-
 s390x/mvpg.c             | 266 +++++++++++++++++++++++++++++++++++++++
 s390x/unittests.cfg      |   4 +
 5 files changed, 288 insertions(+), 2 deletions(-)
 create mode 100644 s390x/mvpg.c