KVM: s390: handle missing guest-storage-limit-suppression

If guest-storage-limit-suppression is not available, we would for now
have a valid guest address space with size 0. So let's simply set the
origin to 0 and the limit to hamax.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f695c6e08337..2a239554eb89 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1897,6 +1897,10 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
         vcpu->arch.sie_block = &sie_page->sie_block;
         vcpu->arch.sie_block->itdba = (unsigned long) &sie_page->itdb;
 
+        /* the real guest size will always be smaller than msl */
+        vcpu->arch.sie_block->mso = 0;
+        vcpu->arch.sie_block->msl = sclp.hamax;
+
         vcpu->arch.sie_block->icpua = id;
         spin_lock_init(&vcpu->arch.local_int.lock);
         vcpu->arch.local_int.float_int = &kvm->arch.float_int;