diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in
index 10f37990be57..4879f136aab8 100644
--- a/docs/man/xl.cfg.5.pod.in
+++ b/docs/man/xl.cfg.5.pod.in
@@ -1616,6 +1616,10 @@ properties in the Device Tree, the type field must be set to "virtio,device".
 Specifies the transport mechanism for the Virtio device, only "mmio" is
 supported for now.
 
+=item B<forced_grant=BOOLEAN>
+
+Allows Xen Grant memory mapping to be done from Dom0.
+
 =back
 
 =item B<tee="STRING">
diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c
index 97c80d7ed0fa..ec2f1844e9b3 100644
--- a/tools/libs/light/libxl_arm.c
+++ b/tools/libs/light/libxl_arm.c
@@ -922,7 +922,8 @@ static int make_xen_iommu_node(libxl__gc *gc, void *fdt)
 
 /* The caller is responsible to complete / close the fdt node */
 static int make_virtio_mmio_node_common(libxl__gc *gc, void *fdt, uint64_t base,
-                                        uint32_t irq, uint32_t backend_domid)
+                                        uint32_t irq, uint32_t backend_domid,
+                                        bool forced_grant)
 {
     int res;
     gic_interrupt intr;
@@ -945,7 +946,7 @@ static int make_virtio_mmio_node_common(libxl__gc *gc, void *fdt, uint64_t base,
     res = fdt_property(fdt, "dma-coherent", NULL, 0);
     if (res) return res;
 
-    if (backend_domid != LIBXL_TOOLSTACK_DOMID) {
+    if (forced_grant || backend_domid != LIBXL_TOOLSTACK_DOMID) {
         uint32_t iommus_prop[2];
 
         iommus_prop[0] = cpu_to_fdt32(GUEST_PHANDLE_IOMMU);
@@ -959,11 +960,12 @@ static int make_virtio_mmio_node_common(libxl__gc *gc, void *fdt, uint64_t base,
 }
 
 static int make_virtio_mmio_node(libxl__gc *gc, void *fdt, uint64_t base,
-                                 uint32_t irq, uint32_t backend_domid)
+                                 uint32_t irq, uint32_t backend_domid,
+                                 bool forced_grant)
 {
     int res;
 
-    res = make_virtio_mmio_node_common(gc, fdt, base, irq, backend_domid);
+    res = make_virtio_mmio_node_common(gc, fdt, base, irq, backend_domid, forced_grant);
     if (res) return res;
 
     return fdt_end_node(fdt);
@@ -1019,11 +1021,11 @@ static int make_virtio_mmio_node_gpio(libxl__gc *gc, void *fdt)
 
 static int make_virtio_mmio_node_device(libxl__gc *gc, void *fdt, uint64_t base,
                                         uint32_t irq, const char *type,
-                                        uint32_t backend_domid)
+                                        uint32_t backend_domid, bool forced_grant)
 {
     int res;
 
-    res = make_virtio_mmio_node_common(gc, fdt, base, irq, backend_domid);
+    res = make_virtio_mmio_node_common(gc, fdt, base, irq, backend_domid, forced_grant);
     if (res) return res;
 
     /* Add device specific nodes */
@@ -1363,7 +1365,7 @@ static int libxl__prepare_dtb(libxl__gc *gc, libxl_domain_config *d_config,
                     iommu_needed = true;
 
                 FDT( make_virtio_mmio_node(gc, fdt, disk->base, disk->irq,
-                                           disk->backend_domid) );
+                                           disk->backend_domid, false) );
             }
         }
 
@@ -1373,12 +1375,13 @@ static int libxl__prepare_dtb(libxl__gc *gc, libxl_domain_config *d_config,
             if (virtio->transport != LIBXL_VIRTIO_TRANSPORT_MMIO)
                 continue;
 
-            if (virtio->backend_domid != LIBXL_TOOLSTACK_DOMID)
+            if (virtio->forced_grant || virtio->backend_domid != LIBXL_TOOLSTACK_DOMID)
                 iommu_needed = true;
 
             FDT( make_virtio_mmio_node_device(gc, fdt, virtio->base,
                                               virtio->irq, virtio->type,
-                                              virtio->backend_domid) );
+                                              virtio->backend_domid,
+                                              virtio->forced_grant) );
         }
 
         /*
diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl
index c10292e0d7e3..cfbcd717dc7f 100644
--- a/tools/libs/light/libxl_types.idl
+++ b/tools/libs/light/libxl_types.idl
@@ -740,6 +740,7 @@ libxl_device_virtio = Struct("device_virtio", [
     ("backend_domname", string),
     ("type", string),
     ("transport", libxl_virtio_transport),
+    ("forced_grant", bool),
     ("devid", libxl_devid),
     # Note that virtio-mmio parameters (irq and base) are for internal
     # use by libxl and can't be modified.
diff --git a/tools/libs/light/libxl_virtio.c b/tools/libs/light/libxl_virtio.c
index faada49e184e..e1f15344ef97 100644
--- a/tools/libs/light/libxl_virtio.c
+++ b/tools/libs/light/libxl_virtio.c
@@ -48,11 +48,13 @@ static int libxl__set_xenstore_virtio(libxl__gc *gc, uint32_t domid,
     flexarray_append_pair(back, "base", GCSPRINTF("%#"PRIx64, virtio->base));
     flexarray_append_pair(back, "type", GCSPRINTF("%s", virtio->type));
     flexarray_append_pair(back, "transport", GCSPRINTF("%s", transport));
+    flexarray_append_pair(back, "forced_grant", GCSPRINTF("%u", virtio->forced_grant));
 
     flexarray_append_pair(front, "irq", GCSPRINTF("%u", virtio->irq));
     flexarray_append_pair(front, "base", GCSPRINTF("%#"PRIx64, virtio->base));
     flexarray_append_pair(front, "type", GCSPRINTF("%s", virtio->type));
     flexarray_append_pair(front, "transport", GCSPRINTF("%s", transport));
+    flexarray_append_pair(front, "forced_grant", GCSPRINTF("%u", virtio->forced_grant));
 
     return 0;
 }
@@ -104,6 +106,15 @@ static int libxl__virtio_from_xenstore(libxl__gc *gc, const char *libxl_path,
         }
     }
 
+    tmp = NULL;
+    rc = libxl__xs_read_checked(gc, XBT_NULL,
+				GCSPRINTF("%s/forced_grant", be_path), &tmp);
+    if (rc) goto out;
+
+    if (tmp) {
+        virtio->forced_grant = strtoul(tmp, NULL, 0);
+    }
+
     tmp = NULL;
     rc = libxl__xs_read_checked(gc, XBT_NULL,
 				GCSPRINTF("%s/type", be_path), &tmp);
diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c
index 1f6f47daf4e1..3e34da099785 100644
--- a/tools/xl/xl_parse.c
+++ b/tools/xl/xl_parse.c
@@ -1215,6 +1215,8 @@ static int parse_virtio_config(libxl_device_virtio *virtio, char *token)
     } else if (MATCH_OPTION("transport", token, oparg)) {
         rc = libxl_virtio_transport_from_string(oparg, &virtio->transport);
         if (rc) return rc;
+    } else if (MATCH_OPTION("forced_grant", token, oparg)) {
+        virtio->forced_grant = strtoul(oparg, NULL, 0);
     } else {
         fprintf(stderr, "Unknown string \"%s\" in virtio spec\n", token);
         return -1;
