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

Message ID 20231106170849.1184162-1-nrb@linux.ibm.com (mailing list archive)
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Series s390x: Align SIE tests to 2GB | expand

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Nico Boehr Nov. 6, 2023, 5:07 p.m. UTC 
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(-)