diff --git a/meta-openembedded/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/r89690-5.14-fixes.patch b/meta-openembedded/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/r89690-5.14-fixes.patch
new file mode 100644
index 0000000..951bd50
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers/r89690-5.14-fixes.patch
@@ -0,0 +1,442 @@
+Subject: Fix build errors with linux 5.14
+
+Upstream-Status: backport
+
+svn-id: r89690
+
+Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
+
+Index: a/src/VBox/Additions/linux/drm/vbox_drv.h
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_drv.h	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_drv.h	(revision 90498)
+@@ -227,6 +227,15 @@
+ 				sizeof(HGSMIHOSTFLAGS))
+ #define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE
+ 
++/** Field @pdev of struct drm_device was removed in 5.14. This macro
++ * transparently handles this change. Input argument is a pointer
++ * to struct drm_device. */
++#if RTLNX_VER_MIN(5,14,0)
++# define VBOX_DRM_TO_PCI_DEV(_dev) to_pci_dev(_dev->dev)
++#else
++# define VBOX_DRM_TO_PCI_DEV(_dev) _dev->pdev
++#endif
++
+ /** How frequently we refresh if the guest is not providing dirty rectangles. */
+ #define VBOX_REFRESH_PERIOD (HZ / 2)
+ 
+Index: a/src/VBox/Additions/linux/drm/vbox_main.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_main.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_main.c	(revision 90498)
+@@ -290,7 +290,7 @@
+ 	/* Take a command buffer for each screen from the end of usable VRAM. */
+ 	vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
+ 
+-	vbox->vbva_buffers = pci_iomap_range(vbox->dev->pdev, 0,
++	vbox->vbva_buffers = pci_iomap_range(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0,
+ 					     vbox->available_vram_size,
+ 					     vbox->num_crtcs *
+ 					     VBVA_MIN_BUFFER_SIZE);
+@@ -311,7 +311,7 @@
+ 	return 0;
+ 
+ err_pci_iounmap:
+-	pci_iounmap(vbox->dev->pdev, vbox->vbva_buffers);
++	pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->vbva_buffers);
+ 	return ret;
+ }
+ 
+@@ -318,7 +318,7 @@
+ static void vbox_accel_fini(struct vbox_private *vbox)
+ {
+ 	vbox_disable_accel(vbox);
+-	pci_iounmap(vbox->dev->pdev, vbox->vbva_buffers);
++	pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->vbva_buffers);
+ }
+ 
+ /** Do we support the 4.3 plus mode hint reporting interface? */
+@@ -393,7 +393,7 @@
+ 
+ 	/* Map guest-heap at end of vram */
+ 	vbox->guest_heap =
+-	    pci_iomap_range(vbox->dev->pdev, 0, GUEST_HEAP_OFFSET(vbox),
++	    pci_iomap_range(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0, GUEST_HEAP_OFFSET(vbox),
+ 			    GUEST_HEAP_SIZE);
+ 	if (!vbox->guest_heap)
+ 		return -ENOMEM;
+@@ -442,7 +442,7 @@
+ err_destroy_guest_pool:
+ 	gen_pool_destroy(vbox->guest_pool);
+ err_unmap_guest_heap:
+-	pci_iounmap(vbox->dev->pdev, vbox->guest_heap);
++	pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->guest_heap);
+ 	return ret;
+ }
+ 
+@@ -452,7 +452,7 @@
+ 	cancel_delayed_work(&vbox->refresh_work);
+ 	vbox_accel_fini(vbox);
+ 	gen_pool_destroy(vbox->guest_pool);
+-	pci_iounmap(vbox->dev->pdev, vbox->guest_heap);
++	pci_iounmap(VBOX_DRM_TO_PCI_DEV(vbox->dev), vbox->guest_heap);
+ }
+ 
+ #if RTLNX_VER_MIN(4,19,0) || RTLNX_RHEL_MIN(8,3)
+@@ -567,12 +567,16 @@
+ 
+ 	size = roundup(size, PAGE_SIZE);
+ 	if (size == 0)
++	{
++		DRM_ERROR("bad size\n");
+ 		return -EINVAL;
++	}
+ 
+ 	ret = vbox_bo_create(dev, size, 0, 0, &vboxbo);
+ 	if (ret) {
+ 		if (ret != -ERESTARTSYS)
+ 			DRM_ERROR("failed to allocate GEM object\n");
++		DRM_ERROR("failed to allocate GEM (%d)\n", ret);
+ 		return ret;
+ 	}
+ 
+@@ -628,6 +632,21 @@
+ {
+ 	struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj);
+ 
++#if RTLNX_VER_MIN(5,14,0)
++	/* Starting from kernel 5.14, there is a warning appears in dmesg
++	 * on attempt to desroy pinned buffer object. Make sure it is unpinned. */
++	while (vbox_bo->bo.pin_count)
++	{
++		int ret;
++		ret = vbox_bo_unpin(vbox_bo);
++		if (ret)
++		{
++			DRM_ERROR("unable to unpin buffer object\n");
++			break;
++		}
++	}
++#endif
++
+ 	ttm_bo_put(&vbox_bo->bo);
+ }
+ 
+@@ -648,7 +667,7 @@
+ 		      u32 handle, u64 *offset)
+ {
+ 	struct drm_gem_object *obj;
+-	int ret;
++	int ret = 0;
+ 	struct vbox_bo *bo;
+ 
+ 	mutex_lock(&dev->struct_mutex);
+@@ -665,8 +684,15 @@
+ 	bo = gem_to_vbox_bo(obj);
+ 	*offset = vbox_bo_mmap_offset(bo);
+ 
++#if RTLNX_VER_MIN(5,14,0)
++	ret = drm_vma_node_allow(&bo->bo.base.vma_node, file);
++	if (ret)
++	{
++		DRM_ERROR("unable to grant previladges to user");
++	}
++#endif
++
+ 	drm_gem_object_put(obj);
+-	ret = 0;
+ 
+ out_unlock:
+ 	mutex_unlock(&dev->struct_mutex);
+Index: a/src/VBox/Additions/linux/drm/vbox_mode.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_mode.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_mode.c	(revision 90498)
+@@ -245,6 +245,10 @@
+ 			vbox_bo_unpin(bo);
+ 			vbox_bo_unreserve(bo);
+ 		}
++		else
++		{
++			DRM_ERROR("unable to lock buffer object: error %d\n", ret);
++		}
+ 	}
+ 
+ 	if (&vbox->fbdev->afb == vbox_fb)
+@@ -856,7 +860,9 @@
+ 	vbox->cursor_data_size = data_size;
+ 	dst = vbox->cursor_data;
+ 
+-#if RTLNX_VER_MIN(5,12,0)
++#if RTLNX_VER_MIN(5,14,0)
++	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.resource->num_pages, &uobj_map);
++#elif RTLNX_VER_MIN(5,12,0)
+ 	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.mem.num_pages, &uobj_map);
+ #else
+ 	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
+Index: a/src/VBox/Additions/linux/drm/vbox_ttm.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_ttm.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_ttm.c	(revision 90498)
+@@ -41,6 +41,10 @@
+ # include <drm/ttm/ttm_page_alloc.h>
+ #endif
+ 
++#if RTLNX_VER_MIN(5,14,0)
++# include <drm/ttm/ttm_range_manager.h>
++#endif
++
+ #if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
+ #define PLACEMENT_FLAGS(placement) (placement)
+ #else
+@@ -174,11 +178,13 @@
+ 	*pl = vboxbo->placement;
+ }
+ 
++#if RTLNX_VER_MAX(5,14,0)
+ static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
+ 				 struct file *filp)
+ {
+ 	return 0;
+ }
++#endif
+ 
+ #if RTLNX_VER_MAX(5,10,0)
+ static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
+@@ -234,10 +240,10 @@
+ 		mem->bus.caching = ttm_write_combined;
+ # endif
+ # if RTLNX_VER_MIN(5,10,0)
+-		mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(vbox->dev->pdev, 0);
++		mem->bus.offset = (mem->start << PAGE_SHIFT) + pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
+ # else
+ 		mem->bus.offset = mem->start << PAGE_SHIFT;
+-		mem->start = pci_resource_start(vbox->dev->pdev, 0);
++		mem->start = pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0);
+ # endif
+ 		mem->bus.is_iomem = true;
+ 		break;
+@@ -373,7 +379,9 @@
+ 	.eviction_valuable = ttm_bo_eviction_valuable,
+ #endif
+ 	.evict_flags = vbox_bo_evict_flags,
++#if RTLNX_VER_MAX(5,14,0)
+ 	.verify_access = vbox_bo_verify_access,
++#endif
+ 	.io_mem_reserve = &vbox_ttm_io_mem_reserve,
+ 	.io_mem_free = &vbox_ttm_io_mem_free,
+ #if RTLNX_VER_MIN(4,12,0) || RTLNX_RHEL_MAJ_PREREQ(7,5)
+@@ -451,12 +459,12 @@
+ 	}
+ 
+ #ifdef DRM_MTRR_WC
+-	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
+-				     pci_resource_len(dev->pdev, 0),
++	vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
++				     pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0),
+ 				     DRM_MTRR_WC);
+ #else
+-	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
+-					 pci_resource_len(dev->pdev, 0));
++	vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0),
++					 pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0));
+ #endif
+ 	return 0;
+ 
+@@ -477,8 +485,8 @@
+ {
+ #ifdef DRM_MTRR_WC
+ 	drm_mtrr_del(vbox->fb_mtrr,
+-		     pci_resource_start(vbox->dev->pdev, 0),
+-		     pci_resource_len(vbox->dev->pdev, 0), DRM_MTRR_WC);
++		     pci_resource_start(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0),
++		     pci_resource_len(VBOX_DRM_TO_PCI_DEV(vbox->dev), 0), DRM_MTRR_WC);
+ #else
+ 	arch_phys_wc_del(vbox->fb_mtrr);
+ #endif
+@@ -560,6 +568,9 @@
+ static const struct drm_gem_object_funcs vbox_drm_gem_object_funcs = {
+ 	.free   = vbox_gem_free_object,
+ 	.print_info = drm_gem_ttm_print_info,
++# if RTLNX_VER_MIN(5,14,0)
++	.mmap = drm_gem_ttm_mmap,
++# endif
+ };
+ #endif
+ 
+@@ -598,6 +609,17 @@
+ 				       sizeof(struct vbox_bo));
+ #endif
+ 
++#if RTLNX_VER_MIN(5,14,0)
++	/* Initialization of the following was removed from DRM stack
++	 * in 5.14, so we need to do it manually. */
++	vboxbo->bo.base.funcs = &vbox_drm_gem_object_funcs;
++	kref_init(&vboxbo->bo.base.refcount);
++	vboxbo->bo.base.size = size;
++	vboxbo->bo.base.dev = dev;
++	dma_resv_init(&vboxbo->bo.base._resv);
++	drm_vma_node_reset(&vboxbo->bo.base.vma_node);
++#endif
++
+ 	ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
+ 			  ttm_bo_type_device, &vboxbo->placement,
+ #if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
+@@ -613,7 +635,11 @@
+ 			  NULL, vbox_bo_ttm_destroy);
+ #endif
+ 	if (ret)
+-		goto err_free_vboxbo;
++	{
++		/* In case of failure, ttm_bo_init() supposed to call
++		 * vbox_bo_ttm_destroy() which in turn will free @vboxbo. */
++		goto err_exit;
++	}
+ 
+ 	*pvboxbo = vboxbo;
+ 
+@@ -621,12 +647,15 @@
+ 
+ err_free_vboxbo:
+ 	kfree(vboxbo);
++err_exit:
+ 	return ret;
+ }
+ 
+ static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
+ {
+-#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3)
++#if RTLNX_VER_MIN(5,14,0)
++	return bo->bo.resource->start << PAGE_SHIFT;
++#elif RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3)
+ 	return bo->bo.mem.start << PAGE_SHIFT;
+ #else
+ 	return bo->bo.offset;
+@@ -685,7 +714,7 @@
+ 	struct ttm_operation_ctx ctx = { false, false };
+ # endif
+ #endif
+-	int ret;
++	int ret = 0;
+ #if RTLNX_VER_MAX(5,11,0)
+ 	int i;
+ #endif
+@@ -765,6 +794,7 @@
+ {
+ 	struct drm_file *file_priv;
+ 	struct vbox_private *vbox;
++	int ret = -EINVAL;
+ 
+ 	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
+ 		return -EINVAL;
+@@ -772,5 +802,12 @@
+ 	file_priv = filp->private_data;
+ 	vbox = file_priv->minor->dev->dev_private;
+ 
+-	return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
++#if RTLNX_VER_MIN(5,14,0)
++	if (drm_dev_is_unplugged(file_priv->minor->dev))
++		return -ENODEV;
++	ret = drm_gem_mmap(filp, vma);
++#else
++	ret = ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
++#endif
++	return ret;
+ }
+Index: a/src/VBox/Additions/linux/drm/vbox_fb.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_fb.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_fb.c	(revision 90498)
+@@ -301,7 +301,9 @@
+ 		return ret;
+ 	}
+ 
+-#if RTLNX_VER_MIN(5,12,0)
++#if RTLNX_VER_MIN(5,14,0)
++	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.resource->num_pages, &bo->kmap);
++#elif RTLNX_VER_MIN(5,12,0)
+ 	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.mem.num_pages, &bo->kmap);
+ #else
+ 	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
+@@ -337,8 +339,8 @@
+ 	 * This seems to be done for safety checking that the framebuffer
+ 	 * is not registered twice by different drivers.
+ 	 */
+-	info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
+-	info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
++	info->apertures->ranges[0].base = pci_resource_start(VBOX_DRM_TO_PCI_DEV(dev), 0);
++	info->apertures->ranges[0].size = pci_resource_len(VBOX_DRM_TO_PCI_DEV(dev), 0);
+ 
+ #if RTLNX_VER_MIN(5,2,0) || RTLNX_RHEL_MAJ_PREREQ(8,2)
+         /*
+Index: a/src/VBox/Additions/linux/drm/vbox_drv.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_drv.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_drv.c	(revision 90498)
+@@ -43,6 +43,10 @@
+ # include <drm/drm_probe_helper.h>
+ #endif
+ 
++#if RTLNX_VER_MIN(5,14,0)
++# include <drm/drm_aperture.h>
++#endif
++
+ #include "version-generated.h"
+ #include "revision-generated.h"
+ 
+@@ -65,12 +69,23 @@
+ 	struct drm_device *dev = NULL;
+ 	int ret = 0;
+ 
++# if RTLNX_VER_MIN(5,14,0)
++	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, "vboxvideofb");
++	if (ret)
++	{
++		printk("unable to remove conflicting framebuffer devices\n");
++		return ret;
++	}
++# endif /* 5.14 */
++
+ 	dev = drm_dev_alloc(&driver, &pdev->dev);
+ 	if (IS_ERR(dev)) {
+ 		ret = PTR_ERR(dev);
+ 		goto err_drv_alloc;
+ 	}
++#if RTLNX_VER_MAX(5,14,0)
+ 	dev->pdev = pdev;
++#endif
+ 	pci_set_drvdata(pdev, dev);
+ 
+ 	ret = vbox_driver_load(dev);
+@@ -125,7 +140,7 @@
+ 
+ 	drm_kms_helper_poll_disable(dev);
+ 
+-	pci_save_state(dev->pdev);
++	pci_save_state(VBOX_DRM_TO_PCI_DEV(dev));
+ 
+ 	drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
+ 
+@@ -147,7 +162,7 @@
+ {
+ 	int ret;
+ 
+-	if (pci_enable_device(dev->pdev))
++	if (pci_enable_device(VBOX_DRM_TO_PCI_DEV(dev)))
+ 		return -EIO;
+ 
+ 	ret = vbox_drm_thaw(dev);
+Index: a/src/VBox/Additions/linux/drm/vbox_irq.c
+===================================================================
+--- a/src/VBox/Additions/linux/drm/vbox_irq.c	(revision 89690)
++++ a/src/VBox/Additions/linux/drm/vbox_irq.c	(revision 90498)
+@@ -206,7 +206,7 @@
+ 	INIT_WORK(&vbox->hotplug_work, vbox_hotplug_worker);
+ 	vbox_update_mode_hints(vbox);
+ #if RTLNX_VER_MIN(3,16,0) || RTLNX_RHEL_MAJ_PREREQ(7,1)
+-	return drm_irq_install(vbox->dev, vbox->dev->pdev->irq);
++	return drm_irq_install(vbox->dev, VBOX_DRM_TO_PCI_DEV(vbox->dev)->irq);
+ #else
+ 	return drm_irq_install(vbox->dev);
+ #endif