linux-kernel - [PATCH v11 23/26] KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-2

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Date:   Tue, 25 Sep 2018 19:16:38 -0400
From:   Tony Krowiak <akrowiak@...ux.vnet.ibm.com>
To:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     freude@...ibm.com, schwidefsky@...ibm.com,
        heiko.carstens@...ibm.com, borntraeger@...ibm.com,
        cohuck@...hat.com, kwankhede@...dia.com,
        bjsdjshi@...ux.vnet.ibm.com, pbonzini@...hat.com,
        alex.williamson@...hat.com, pmorel@...ux.vnet.ibm.com,
        alifm@...ux.vnet.ibm.com, mjrosato@...ux.vnet.ibm.com,
        jjherne@...ux.vnet.ibm.com, thuth@...hat.com,
        pasic@...ux.vnet.ibm.com, berrange@...hat.com,
        fiuczy@...ux.vnet.ibm.com, buendgen@...ibm.com,
        akrowiak@...ux.vnet.ibm.com, frankja@...ux.ibm.com,
        Pierre Morel <pmorel@...ux.ibm.com>,
        Tony Krowiak <akrowiak@...ux.ibm.com>
Subject: [PATCH v11 23/26] KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-2

From: Pierre Morel <pmorel@...ux.ibm.com>

When the guest schedules a SIE with a FORMAT-0 CRYCB,
we are able to schedule it in the host with a FORMAT-2
CRYCB if the host uses FORMAT-2

Signed-off-by: Pierre Morel <pmorel@...ux.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@...ux.ibm.com>
---
 arch/s390/kvm/vsie.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index ca6466304731..9117891651c6 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -246,7 +246,9 @@ static int setup_apcb(struct kvm_vcpu *vcpu, struct kvm_s390_crypto_cb *crycb_s,
 
 		switch (fmt_h) {
 		case CRYCB_FORMAT2:
-			return -EINVAL;
+			return setup_apcb10(vcpu, &crycb_s->apcb1,
+					    (unsigned long) &crycb->apcb0,
+					    &crycb_h->apcb1);
 		case CRYCB_FORMAT1:
 		case CRYCB_FORMAT0:
 			return setup_apcb00(vcpu,
-- 
2.19.0.221.g150f307