This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte <co...@de.ibm.com>
---
---
arch/s390/kvm/kvm-s390.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -572,7 +572,10 @@ rerun_vcpu:
rc = __vcpu_run(vcpu);
if (rc)
break;
- rc = kvm_handle_sie_intercept(vcpu);
+ if (kvm_is_ucontrol(vcpu->kvm))
+ rc = -EOPNOTSUPP;
+ else
+ rc = kvm_handle_sie_intercept(vcpu);
} while (!signal_pending(current) && !rc);
if (rc == SIE_INTERCEPT_RERUNVCPU)
--
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