--- linux-4.13.8/drivers/gpu/drm/bochs/bochs.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/bochs/bochs.h	2017-10-20 14:34:50.308633773 +0000
@@ -115,8 +115,6 @@
 	return container_of(gem, struct bochs_bo, gem);
 }
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
 {
 	return drm_vma_node_offset_addr(&bo->bo.vma_node);
--- linux-4.13.8/drivers/gpu/drm/nouveau/nouveau_drv.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/nouveau/nouveau_drv.h	2017-10-20 14:34:51.581633751 +0000
@@ -57,8 +57,6 @@
 struct nouveau_channel;
 struct platform_device;
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 #include "nouveau_fence.h"
 #include "nouveau_bios.h"
 
--- linux-4.13.8/drivers/gpu/drm/ast/ast_drv.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/ast/ast_drv.h	2017-10-20 14:34:50.289633773 +0000
@@ -356,8 +356,6 @@
 				uint32_t handle,
 				uint64_t *offset);
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 int ast_mm_init(struct ast_private *ast);
 void ast_mm_fini(struct ast_private *ast);
 
--- linux-4.13.8/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c	2017-10-20 14:34:50.644633767 +0000
@@ -21,8 +21,6 @@
 
 #include "hibmc_drm_drv.h"
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static inline struct hibmc_drm_private *
 hibmc_bdev(struct ttm_bo_device *bd)
 {
--- linux-4.13.8/drivers/gpu/drm/virtio/virtgpu_ttm.c	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/virtio/virtgpu_ttm.c	2017-10-20 14:34:53.055633725 +0000
@@ -37,8 +37,6 @@
 
 #include <linux/delay.h>
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static struct
 virtio_gpu_device *virtio_gpu_get_vgdev(struct ttm_bo_device *bdev)
 {
--- linux-4.13.8/drivers/gpu/drm/qxl/qxl_drv.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/qxl/qxl_drv.h	2017-10-20 14:34:52.072633742 +0000
@@ -88,9 +88,6 @@
 		}						\
 	} while (0)
 
-#define DRM_FILE_OFFSET 0x100000000ULL
-#define DRM_FILE_PAGE_OFFSET (DRM_FILE_OFFSET >> PAGE_SHIFT)
-
 #define QXL_INTERRUPT_MASK (\
 	QXL_INTERRUPT_DISPLAY |\
 	QXL_INTERRUPT_CURSOR |\
--- linux-4.13.8/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c	2017-10-20 14:34:43.264633895 +0000
@@ -48,3 +48,1 @@
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
--- linux-4.13.8/drivers/gpu/drm/mgag200/mgag200_drv.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/mgag200/mgag200_drv.h	2017-10-20 14:34:51.404633754 +0000
@@ -276,7 +276,6 @@
 struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev);
 void mgag200_i2c_destroy(struct mga_i2c_chan *i2c);
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 void mgag200_ttm_placement(struct mgag200_bo *bo, int domain);
 
 static inline int mgag200_bo_reserve(struct mgag200_bo *bo, bool no_wait)
--- linux-4.13.8/drivers/gpu/drm/radeon/radeon_ttm.c	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/radeon/radeon_ttm.c	2017-10-20 14:34:52.588633733 +0000
@@ -45,8 +45,6 @@
 #include "radeon_reg.h"
 #include "radeon.h"
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
 static void radeon_ttm_debugfs_fini(struct radeon_device *rdev);
 
--- linux-4.13.8/drivers/gpu/drm/cirrus/cirrus_drv.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/drivers/gpu/drm/cirrus/cirrus_drv.h	2017-10-20 14:34:50.333633772 +0000
@@ -178,7 +178,6 @@
 
 
 #define to_cirrus_obj(x) container_of(x, struct cirrus_gem_object, base)
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 
 				/* cirrus_mode.c */
 void cirrus_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
--- linux-4.13.8/include/drm/drmP.h	2017-10-18 07:38:33.000000000 +0000
+++ linux-4.13.8-modified/include/drm/drmP.h	2017-10-20 14:35:31.300633060 +0000
@@ -503,4 +503,10 @@
 /* helper for handling conditionals in various for_each macros */
 #define for_each_if(condition) if (!(condition)) {} else
 
+#if BITS_PER_LONG == 64
+#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
+#else
+#define DRM_FILE_PAGE_OFFSET (0x10000000ULL >> PAGE_SHIFT)
+#endif
+
 #endif