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Date: Fri, 18 Dec 2020 15:18:07 +0100 From: Claudio Imbrenda <imbrenda@...ux.ibm.com> To: linux-kernel@...r.kernel.org Cc: borntraeger@...ibm.com, frankja@...ux.ibm.com, david@...hat.com, kvm@...r.kernel.org, linux-s390@...r.kernel.org Subject: [PATCH v1 0/4] s390/kvm: fix MVPG when in VSIE 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
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