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KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-1 

When the guest schedules a SIE with a FORMAT-0 CRYCB,
we are able to schedule it in the host with a FORMAT-1
CRYCB if the host uses FORMAT-1 or FORMAT-0.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Message-Id: <20180925231641.4954-22-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Pierre Morel 2018-09-25 19:16:36 -04:00 committed by Christian Borntraeger
parent 6ee7409820
commit c9ba8c2cd2
1 changed files with 10 additions and 4 deletions
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14
arch/s390/kvm/vsie.c
View File

@ -220,11 +220,17 @@ static int setup_apcb(struct kvm_vcpu *vcpu, struct kvm_s390_crypto_cb *crycb_s,
case CRYCB_FORMAT0:
if ((crycb_o & PAGE_MASK) != ((crycb_o + 32) & PAGE_MASK))
return -EACCES;
if (fmt_h != CRYCB_FORMAT0)
switch (fmt_h) {
case CRYCB_FORMAT2:
return -EINVAL;
return setup_apcb00(vcpu, (unsigned long *) &crycb_s->apcb0,
(unsigned long) &crycb->apcb0,
(unsigned long *) &crycb_h->apcb0);
case CRYCB_FORMAT1:
case CRYCB_FORMAT0:
return setup_apcb00(vcpu,
(unsigned long *) &crycb_s->apcb0,
(unsigned long) &crycb->apcb0,
(unsigned long *) &crycb_h->apcb0);
}
}
return -EINVAL;
}