[kvm-unit-tests PATCH v2 0/3] s390x: Align SIE tests to 2GB

Nico Boehr
2023-11-06T17:08:58Z

v2:
---
* reverse xmas (thanks Claudio)
* kerneldoc (thanks Claudio)
* fix a virtual-physical confusion in mvpg-sie
* pick up Janoschs r-bs

Some environments on s390x require guests to be aligned to 2GB. This is a
problem when kvm-unit-tests act as a hypervisor, since guests run with MSO/MSL
there and guest memory doesn't satisfy this requirement.

This series ensures kvm-unit-tests fulfills the 2G alignment requirement.

Note that these changes make mvpg-sie test case fail under KVM due to a bug in
prefix handling, a fix is was submitted here:
https://lore.kernel.org/kvm/20231102153549.53984-1-imbrenda@linux.ibm.com/

Nico Boehr (3):
s390x: spec_ex-sie: refactor to use snippet API
s390x: sie: ensure guests are aligned to 2GB
s390x: mvpg-sie: fix virtual-physical address confusion

lib/s390x/mmu.h | 2 ++
lib/s390x/sie.c | 42 ++++++++++++++++++++++++++++++++++++++++++
lib/s390x/sie.h | 2 ++
lib/s390x/snippet.h | 9 +++------
s390x/mvpg-sie.c | 15 +++++++++++----
s390x/sie.c | 4 ++--
s390x/spec_ex-sie.c | 13 ++++++-------
7 files changed, 68 insertions(+), 19 deletions(-)

--
2.41.0