KVM: s390: Fix problem state check for b2 intercepts

The kernel handles some priviledged instruction exits. While I was
unable to trigger such an exit from guest userspace, the code should
check for supervisor state before emulating a priviledged instruction.

I also renamed kvm_s390_handle_priv to kvm_s390_handle_b2. After all
there are non priviledged b2 instructions like stck (store clock).

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 61236102203e..9d19803111ba 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -103,7 +103,7 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
 static intercept_handler_t instruction_handlers[256] = {
         [0x83] = kvm_s390_handle_diag,
         [0xae] = kvm_s390_handle_sigp,
-        [0xb2] = kvm_s390_handle_priv,
+        [0xb2] = kvm_s390_handle_b2,
         [0xb7] = handle_lctl,
         [0xeb] = handle_lctlg,
 };