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. Claudio Imbrenda (4): s390/kvm: VSIE: stop leaking host addresses s390/kvm: extend guest_translate for MVPG interpretation s390/kvm: add kvm_s390_vsie_mvpg_check needed for VSIE MVPG s390/kvm: VSIE: correctly handle MVPG when in VSIE arch/s390/kvm/gaccess.c | 88 ++++++++++++++++++++++++++++++++++++++--- arch/s390/kvm/gaccess.h | 3 ++ arch/s390/kvm/vsie.c | 78 +++++++++++++++++++++++++++++++++--- 3 files changed, 159 insertions(+), 10 deletions(-) -- 2.26.2
