1 files changed, 8 insertions, 0 deletions
diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index 17379db52a..963aa2450c 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -1715,6 +1715,14 @@ static void amdvi_sysbus_realize(DeviceState *dev, Error **errp)
         exit(EXIT_FAILURE);
     }
 
+    if (s->xtsup) {
+        if (kvm_irqchip_is_split() && !kvm_enable_x2apic()) {
+            error_report("AMD IOMMU xtsup=on requires x2APIC support on "
+                          "the KVM side");
+            exit(EXIT_FAILURE);
+        }
+    }
+
     pci_setup_iommu(bus, &amdvi_iommu_ops, s);
     amdvi_init(s);
 }