KVM: s390: vsie: copy wrapping keys to right place

Copy the key mask to the right offset inside the shadow CRYCB

Fixes: bbeaa58 ("KVM: s390: vsie: support aes dea wrapping keys")
Signed-off-by: Pierre Morel <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Reviewed-by: Janosch Frank <[email protected]>
Cc: [email protected] # v4.8+
Message-Id: <[email protected]>
Signed-off-by: Janosch Frank <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>

Author: Pierre Morel

arch/s390/kvm/vsie.c

@@ -173,7 +173,8 @@ static int shadow_crycb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 		return set_validity_icpt(scb_s, 0x0039U);
 
 	/* copy only the wrapping keys */
-	if (read_guest_real(vcpu, crycb_addr + 72, &vsie_page->crycb, 56))
+	if (read_guest_real(vcpu, crycb_addr + 72,
+			    vsie_page->crycb.dea_wrapping_key_mask, 56))
 		return set_validity_icpt(scb_s, 0x0035U);
 
 	scb_s->ecb3 |= ecb3_flags;