From: Janosch Frank <frankja@xxxxxxxxxxxxx>
SIE intercept code 8 is used only on exception loops for protected
guests. That means we need stop the guest when we see it.
Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
---
arch/s390/kvm/intercept.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index c22214967214..d63f9cf10360 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -231,6 +231,13 @@ static int handle_prog(struct kvm_vcpu *vcpu)
vcpu->stat.exit_program_interruption++;
+ /*
+ * Intercept 8 indicates a loop of specification exceptions
+ * for protected guests
+ */
+ if (kvm_s390_pv_is_protected(vcpu->kvm))
+ return -EOPNOTSUPP;
+
if (guestdbg_enabled(vcpu) && per_event(vcpu)) {
rc = kvm_s390_handle_per_event(vcpu);
if (rc)
--
2.24.0
