From: Farhan Ali <alifm@linux.ibm.com>
Subject: KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-2
Patch-mainline: v4.20-rc1
Git-commit: 9ee71f20cb8d90e156c0e00ff9949328f455b06b
References: FATE#326370, LTC#169186, bsc#1113483
Summary: kernel: AP Crypto Passthrough
Description: This adds support for AP crypto passthrough for
kvm guests.
Upstream-Description:
KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-2
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@linux.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Message-Id: <20180925231641.4954-24-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
arch/s390/kvm/vsie.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -236,7 +236,9 @@ static int setup_apcb(struct kvm_vcpu *v
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,