1 files changed, 3 insertions, 4 deletions
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 42c4790..f3ba9b9 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -352,11 +352,10 @@ static void vfio_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb)
 
     rcu_read_lock();
 
-    if (!vfio_get_vaddr(iotlb, &vaddr, &read_only)) {
-        goto out;
-    }
-
     if ((iotlb->perm & IOMMU_RW) != IOMMU_NONE) {
+        if (!vfio_get_vaddr(iotlb, &vaddr, &read_only)) {
+            goto out;
+        }
         /*
          * vaddr is only valid until rcu_read_unlock(). But after
          * vfio_dma_map has set up the mapping the pages will be