From: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx>
DIAGNOSE is a privileged instruction and thus we must make sure that we are
in supervisor mode before taking any other actions.
Signed-off-by: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx>
Acked-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
---
arch/s390/kvm/diag.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 1c01a99..3074475 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -132,6 +132,9 @@ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu)
{
int code = (vcpu->arch.sie_block->ipb & 0xfff0000) >> 16;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
trace_kvm_s390_handle_diag(vcpu, code);
switch (code) {
case 0x10:
--
1.8.2.2
--
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