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| /linux/drivers/s390/crypto/ |
| H A D | zcrypt_error.h | diff 6733775a92eacd612ac88afa0fd922e4ffeb2bc7 Wed Nov 20 11:44:31 CET 2019 Harald Freudenberger <freude@linux.ibm.com> s390/zcrypt: handle new reply code FILTERED_BY_HYPERVISOR
This patch introduces support for a new architectured reply
code 0x8B indicating that a hypervisor layer (if any) has
rejected an ap message.
Linux may run as a guest on top of a hypervisor like zVM
or KVM. So the crypto hardware seen by the ap bus may be
restricted by the hypervisor for example only a subset like
only clear key crypto requests may be supported. Other
requests will be filtered out - rejected by the hypervisor.
The new reply code 0x8B will appear in such cases and needs
to get recognized by the ap bus and zcrypt device driver zoo.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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