If a memop fails due to key checked protection, after already having written to the guest, don't indicate suppression to the guest, as that would imply that memory wasn't modified.
This could be considered a fix to the code introducing storage key support, however this is a bug in KVM only if we emulate an instructions writing to an operand spanning multiple pages, which I don't believe we do.
v1 -> v2 * Reword commit message of patch 1
Janis Schoetterl-Glausch (2): KVM: s390: Don't indicate suppression on dirtying, failing memop KVM: s390: selftest: Test suppression indication on key prot exception
arch/s390/kvm/gaccess.c | 47 ++++++++++++++--------- tools/testing/selftests/kvm/s390x/memop.c | 43 ++++++++++++++++++++- 2 files changed, 70 insertions(+), 20 deletions(-)
base-commit: af2d861d4cd2a4da5137f795ee3509e6f944a25b