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. v2->v3 * improved some comments * improved some variable and parameter names for increased readability * fixed missing handling of page faults in the MVPG handler * small readability improvements 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 | 30 ++++++++++-- arch/s390/kvm/gaccess.h | 5 +- arch/s390/kvm/vsie.c | 101 ++++++++++++++++++++++++++++++++++++---- 3 files changed, 121 insertions(+), 15 deletions(-) -- 2.26.2
