diff --git a/hw-arm-smmuv3-Allow-MAP-notifiers.patch b/hw-arm-smmuv3-Allow-MAP-notifiers.patch
new file mode 100644
index 0000000..1d82532
--- /dev/null
+++ b/hw-arm-smmuv3-Allow-MAP-notifiers.patch
@@ -0,0 +1,37 @@
+From dc126664134989975ce9ab9e7d5d2c8916628bf6 Mon Sep 17 00:00:00 2001
+From: Eric Auger <eric.auger@redhat.com>
+Date: Wed, 18 Mar 2020 11:17:36 +0100
+Subject: [PATCH] hw/arm/smmuv3: Allow MAP notifiers
+
+We now have all bricks to support nested paging. This
+uses MAP notifiers to map the MSIs. So let's allow MAP
+notifiers to be registered.
+
+Signed-off-by: Eric Auger <eric.auger@redhat.com>
+Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
+---
+ hw/arm/smmuv3.c | 8 --------
+ 1 file changed, 8 deletions(-)
+
+diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
+index 9aeb420428..45f21c53fe 100644
+--- a/hw/arm/smmuv3.c
++++ b/hw/arm/smmuv3.c
+@@ -1628,14 +1628,6 @@ static int smmuv3_notify_flag_changed(IOMMUMemoryRegion *iommu,
+         return -EINVAL;
+     }
+ 
+-    if (new & IOMMU_NOTIFIER_MAP) {
+-        error_setg(errp,
+-                   "device %02x.%02x.%x requires iommu MAP notifier which is "
+-                   "not currently supported", pci_bus_num(sdev->bus),
+-                   PCI_SLOT(sdev->devfn), PCI_FUNC(sdev->devfn));
+-        return -EINVAL;
+-    }
+-
+     if (old == IOMMU_NOTIFIER_NONE) {
+         trace_smmuv3_notify_flag_add(iommu->parent_obj.name);
+         QLIST_INSERT_HEAD(&s->devices_with_notifiers, sdev, next);
+-- 
+2.27.0
+