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authorHarald Freudenberger <freude@linux.ibm.com>2019-11-20 11:44:31 +0100
committerVasily Gorbik <gor@linux.ibm.com>2019-11-30 10:52:44 +0100
commit6733775a92eacd612ac88afa0fd922e4ffeb2bc7 (patch)
treed1ac2f659527aaa7dc9f45776881cfcbe7e360d1 /arch/s390/kernel
parent914d52e46490b6599b7f03fad233f4f19bf23cf7 (diff)
downloadlinux-6733775a92eacd612ac88afa0fd922e4ffeb2bc7.tar.bz2
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>
Diffstat (limited to 'arch/s390/kernel')
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