[PATCH v2 0/2] s390/kvm: fix MVPG when in VSIE

Claudio Imbrenda
2021-02-02T18:00:26Z

The current handling of the MVPG instruction when executed in a nested
guest is wrong, and can lead to the nested guest hanging.

This patchset fixes the behaviour to be more architecturally correct,
and fixes the hangs observed.

v1->v2
* complete rewrite

Claudio Imbrenda (2):
s390/kvm: extend kvm_s390_shadow_fault to return entry pointer
s390/kvm: VSIE: correctly handle MVPG when in VSIE

arch/s390/kvm/gaccess.c | 26 ++++++++--
arch/s390/kvm/gaccess.h | 5 +-
arch/s390/kvm/vsie.c | 102 ++++++++++++++++++++++++++++++++++++----
3 files changed, 119 insertions(+), 14 deletions(-)

--
2.26.2