1 files changed, 5 insertions, 3 deletions
diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index 2db2e17494..c5906abd88 100644
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -548,18 +548,20 @@ void iommu_update_ire_from_apic(
     const struct iommu_ops *ops = iommu_get_ops();
     ops->update_ire_from_apic(apic, reg, value);
 }
-void iommu_update_ire_from_msi(
+
+int iommu_update_ire_from_msi(
     struct msi_desc *msi_desc, struct msi_msg *msg)
 {
     const struct iommu_ops *ops = iommu_get_ops();
-    ops->update_ire_from_msi(msi_desc, msg);
+    return iommu_intremap ? ops->update_ire_from_msi(msi_desc, msg) : 0;
 }
 
 void iommu_read_msi_from_ire(
     struct msi_desc *msi_desc, struct msi_msg *msg)
 {
     const struct iommu_ops *ops = iommu_get_ops();
-    ops->read_msi_from_ire(msi_desc, msg);
+    if ( iommu_intremap )
+        ops->read_msi_from_ire(msi_desc, msg);
 }
 
 unsigned int iommu_read_apic_from_ire(unsigned int apic, unsigned int reg)