diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index 7942cf05cd93..40b3e8e3fc42 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -38,6 +38,7 @@ static const struct drm_gem_object_funcs drm_gem_cma_default_funcs = {
 	.print_info = drm_gem_cma_print_info,
 	.get_sg_table = drm_gem_cma_get_sg_table,
 	.vmap = drm_gem_cma_vmap,
+	.vmap_local = drm_gem_cma_vmap_local,
 	.mmap = drm_gem_cma_mmap,
 	.vm_ops = &drm_gem_cma_vm_ops,
 };
@@ -471,6 +472,40 @@ int drm_gem_cma_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
 }
 EXPORT_SYMBOL_GPL(drm_gem_cma_vmap);
 
+/**
+ * drm_gem_cma_vmap_local - map a CMA GEM object into the kernel's virtual
+ *     address space
+ * @obj: GEM object
+ * @map: Returns the kernel virtual address of the CMA GEM object's backing
+ *       store.
+ *
+ * This function maps a buffer into the kernel's
+ * virtual address space. Since the CMA buffers are already mapped into the
+ * kernel virtual address space this simply returns the cached virtual
+ * address. Drivers using the CMA helpers should set this as their DRM
+ * driver's &drm_gem_object_funcs.vmap_local callback.
+ *
+ * Returns:
+ * 0 on success, or a negative error code otherwise.
+ */
+int drm_gem_cma_vmap_local(struct drm_gem_object *obj, struct dma_buf_map *map)
+{
+	struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(obj);
+
+	/*
+	 * TODO: The code in drm_gem_cma_prime_import_sg_table_vmap()
+	 *       establishes this mapping. The correct solution would
+	 *       be to call dma_buf_vmap_local() here.
+	 *
+	 *       If we find a case where we absolutely have to call
+	 *       dma_buf_vmap_local(), the code needs to be restructured.
+	 */
+	dma_buf_map_set_vaddr(map, cma_obj->vaddr);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(drm_gem_cma_vmap_local);
+
 /**
  * drm_gem_cma_mmap - memory-map an exported CMA GEM object
  * @obj: GEM object
diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index dc316cb79e00..ec57326c69c4 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -387,6 +387,7 @@ static const struct drm_gem_object_funcs vc4_gem_object_funcs = {
 	.export = vc4_prime_export,
 	.get_sg_table = drm_gem_cma_get_sg_table,
 	.vmap = vc4_prime_vmap,
+	.vmap_local = vc4_prime_vmap_local,
 	.vm_ops = &vc4_vm_ops,
 };
 
@@ -797,6 +798,18 @@ int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
 	return drm_gem_cma_vmap(obj, map);
 }
 
+int vc4_prime_vmap_local(struct drm_gem_object *obj, struct dma_buf_map *map)
+{
+	struct vc4_bo *bo = to_vc4_bo(obj);
+
+	if (bo->validated_shader) {
+		DRM_DEBUG("mmaping of shader BOs not allowed.\n");
+		return -EINVAL;
+	}
+
+	return drm_gem_cma_vmap_local(obj, map);
+}
+
 struct drm_gem_object *
 vc4_prime_import_sg_table(struct drm_device *dev,
 			  struct dma_buf_attachment *attach,
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index 43a1af110b3e..efb6c47d318f 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -812,6 +812,7 @@ struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev,
 						 struct dma_buf_attachment *attach,
 						 struct sg_table *sgt);
 int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
+int vc4_prime_vmap_local(struct drm_gem_object *obj, struct dma_buf_map *map);
 int vc4_bo_cache_init(struct drm_device *dev);
 int vc4_bo_inc_usecnt(struct vc4_bo *bo);
 void vc4_bo_dec_usecnt(struct vc4_bo *bo);
diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h
index 0a9711caa3e8..05122e71bc6d 100644
--- a/include/drm/drm_gem_cma_helper.h
+++ b/include/drm/drm_gem_cma_helper.h
@@ -99,6 +99,7 @@ drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
 				  struct dma_buf_attachment *attach,
 				  struct sg_table *sgt);
 int drm_gem_cma_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
+int drm_gem_cma_vmap_local(struct drm_gem_object *obj, struct dma_buf_map *map);
 int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
 
 /**
