original_kernel/arch/s390/kvm
Pierre Morel b10bd9a256 s390: vsie: Use effective CRYCBD.31 to check CRYCBD validity
When facility.76 MSAX3 is present for the guest we must issue a validity
interception if the CRYCBD is not valid.

The bit CRYCBD.31 is an effective field and tested at each guest level
and has for effect to mask the facility.76

It follows that if CRYCBD.31 is clear and AP is not in use  we do not
have to test the CRYCBD validatity even if facility.76 is present in the
host.

Fixes: 6ee7409820 ("KVM: s390: vsie: allow CRYCB FORMAT-0")
Cc: stable@vger.kernel.org

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reported-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1549876849-32680-1-git-send-email-pmorel@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-11 13:19:20 +01:00
..
Kconfig
Makefile
diag.c
gaccess.c
gaccess.h
guestdbg.c
intercept.c
interrupt.c
irq.h
kvm-s390.c
kvm-s390.h
priv.c
sigp.c
trace-s390.h
trace.h
vsie.c s390: vsie: Use effective CRYCBD.31 to check CRYCBD validity 2019-02-11 13:19:20 +01:00