From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Claudio Imbrenda Subject: [PATCH v2 0/2] s390/kvm: fix MVPG when in VSIE Date: Tue, 2 Feb 2021 19:00:26 +0100 Message-Id: <20210202180028.876888-1-imbrenda@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-ID: To: linux-kernel@vger.kernel.org Cc: borntraeger@de.ibm.com, frankja@linux.ibm.com, david@redhat.com, kvm@vger.kernel.org, linux-s390@vger.kernel.org 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