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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-05-05 10:27:15 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-05-05 12:15:05 +0300 |
| commit | 5615e74f48dcc982655543e979b6c3f3f877e6f6 (patch) | |
| tree | abb0d9f0a74a5888e0b5fc5eb8c38f7ca393ede4 /Documentation/crypto | |
| parent | 2a173ec993baa6a97e7b0fb89240200a88d90746 (diff) | |
| download | linux-5615e74f48dcc982655543e979b6c3f3f877e6f6.tar.xz | |
KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction
In LPAR we will only get an intercept for FC==3 for the PQAP
instruction. Running nested under z/VM can result in other intercepts as
well as ECA_APIE is an effective bit: If one hypervisor layer has
turned this bit off, the end result will be that we will get intercepts for
all function codes. Usually the first one will be a query like PQAP(QCI).
So the WARN_ON_ONCE is not right. Let us simply remove it.
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: stable@vger.kernel.org # v5.3+
Fixes: e5282de93105 ("s390: ap: kvm: add PQAP interception for AQIC")
Link: https://lore.kernel.org/kvm/20200505083515.2720-1-borntraeger@de.ibm.com
Reported-by: Qian Cai <cailca@icloud.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'Documentation/crypto')
0 files changed, 0 insertions, 0 deletions