diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 126b3c6e12f9..16ca4a141866 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -532,7 +532,7 @@ nouveau_bo_map(struct nouveau_bo *nvbo)
 	if (ret)
 		return ret;
 
-	ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.resource->num_pages, &nvbo->kmap);
+	ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.resource->size), &nvbo->kmap);
 
 	ttm_bo_unreserve(&nvbo->bo);
 	return ret;
@@ -1236,7 +1236,7 @@ vm_fault_t nouveau_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
 	} else {
 		/* make sure bo is in mappable vram */
 		if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA ||
-		    bo->resource->start + bo->resource->num_pages < mappable)
+		    bo->resource->start + PFN_UP(bo->resource->size) < mappable)
 			return 0;
 
 		for (i = 0; i < nvbo->placement.num_placement; ++i) {
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo0039.c b/drivers/gpu/drm/nouveau/nouveau_bo0039.c
index 7390132129fe..e2ce44adaa5c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo0039.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo0039.c
@@ -52,7 +52,7 @@ nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	u32 src_offset = old_reg->start << PAGE_SHIFT;
 	u32 dst_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, new_reg);
 	u32 dst_offset = new_reg->start << PAGE_SHIFT;
-	u32 page_count = new_reg->num_pages;
+	u32 page_count = PFN_UP(new_reg->size);
 	int ret;
 
 	ret = PUSH_WAIT(push, 3);
@@ -62,7 +62,7 @@ nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_BUFFER_IN, src_ctxdma,
 			       SET_CONTEXT_DMA_BUFFER_OUT, dst_ctxdma);
 
-	page_count = new_reg->num_pages;
+	page_count = PFN_UP(new_reg->size);
 	while (page_count) {
 		int line_count = (page_count > 2047) ? 2047 : page_count;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo5039.c b/drivers/gpu/drm/nouveau/nouveau_bo5039.c
index 4c75c7b3804c..c6cf3629a9f9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo5039.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo5039.c
@@ -41,7 +41,7 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 {
 	struct nouveau_mem *mem = nouveau_mem(old_reg);
 	struct nvif_push *push = chan->chan.push;
-	u64 length = (new_reg->num_pages << PAGE_SHIFT);
+	u64 length = new_reg->size;
 	u64 src_offset = mem->vma[0].addr;
 	u64 dst_offset = mem->vma[1].addr;
 	int src_tiled = !!mem->kind;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo74c1.c b/drivers/gpu/drm/nouveau/nouveau_bo74c1.c
index ed6c09d67840..9b7ba31fae13 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo74c1.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo74c1.c
@@ -44,7 +44,7 @@ nv84_bo_move_exec(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	if (ret)
 		return ret;
 
-	PUSH_NVSQ(push, NV74C1, 0x0304, new_reg->num_pages << PAGE_SHIFT,
+	PUSH_NVSQ(push, NV74C1, 0x0304, new_reg->size,
 				0x0308, upper_32_bits(mem->vma[0].addr),
 				0x030c, lower_32_bits(mem->vma[0].addr),
 				0x0310, upper_32_bits(mem->vma[1].addr),
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo85b5.c b/drivers/gpu/drm/nouveau/nouveau_bo85b5.c
index dec29b2d8bb2..a15a38a87a95 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo85b5.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo85b5.c
@@ -44,10 +44,10 @@ nva3_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	struct nvif_push *push = chan->chan.push;
 	u64 src_offset = mem->vma[0].addr;
 	u64 dst_offset = mem->vma[1].addr;
-	u32 page_count = new_reg->num_pages;
+	u32 page_count = PFN_UP(new_reg->size);
 	int ret;
 
-	page_count = new_reg->num_pages;
+	page_count = PFN_UP(new_reg->size);
 	while (page_count) {
 		int line_count = (page_count > 8191) ? 8191 : page_count;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo9039.c b/drivers/gpu/drm/nouveau/nouveau_bo9039.c
index 776b04976cdf..d2bb2687d401 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo9039.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo9039.c
@@ -42,10 +42,10 @@ nvc0_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	struct nouveau_mem *mem = nouveau_mem(old_reg);
 	u64 src_offset = mem->vma[0].addr;
 	u64 dst_offset = mem->vma[1].addr;
-	u32 page_count = new_reg->num_pages;
+	u32 page_count = PFN_UP(new_reg->size);
 	int ret;
 
-	page_count = new_reg->num_pages;
+	page_count = PFN_UP(new_reg->size);
 	while (page_count) {
 		int line_count = (page_count > 2047) ? 2047 : page_count;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo90b5.c b/drivers/gpu/drm/nouveau/nouveau_bo90b5.c
index 8499f58213e3..4618f4f5ab56 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo90b5.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo90b5.c
@@ -37,10 +37,10 @@ nvc0_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 	struct nvif_push *push = chan->chan.push;
 	u64 src_offset = mem->vma[0].addr;
 	u64 dst_offset = mem->vma[1].addr;
-	u32 page_count = new_reg->num_pages;
+	u32 page_count = PFN_UP(new_reg->size);
 	int ret;
 
-	page_count = new_reg->num_pages;
+	page_count = PFN_UP(new_reg->size);
 	while (page_count) {
 		int line_count = (page_count > 8191) ? 8191 : page_count;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_boa0b5.c b/drivers/gpu/drm/nouveau/nouveau_boa0b5.c
index 575212472e7a..07a5c6302c98 100644
--- a/drivers/gpu/drm/nouveau/nouveau_boa0b5.c
+++ b/drivers/gpu/drm/nouveau/nouveau_boa0b5.c
@@ -58,7 +58,7 @@ nve0_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 				PITCH_IN, PAGE_SIZE,
 				PITCH_OUT, PAGE_SIZE,
 				LINE_LENGTH_IN, PAGE_SIZE,
-				LINE_COUNT, new_reg->num_pages);
+				LINE_COUNT, PFN_UP(new_reg->size));
 
 	PUSH_IMMD(push, NVA0B5, LAUNCH_DMA,
 		  NVDEF(NVA0B5, LAUNCH_DMA, DATA_TRANSFER_TYPE, NON_PIPELINED) |
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index fab542a758ff..2f479c96e415 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -679,7 +679,7 @@ nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 		}
 
 		if (!nvbo->kmap.virtual) {
-			ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.resource->num_pages,
+			ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.resource->size),
 					  &nvbo->kmap);
 			if (ret) {
 				NV_PRINTK(err, cli, "failed kmap for reloc\n");
@@ -868,8 +868,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 			if (unlikely(cmd != req->suffix0)) {
 				if (!nvbo->kmap.virtual) {
 					ret = ttm_bo_kmap(&nvbo->bo, 0,
-							  nvbo->bo.resource->
-							  num_pages,
+							  PFN_UP(nvbo->bo.resource->size),
 							  &nvbo->kmap);
 					if (ret) {
 						WIND_RING(chan);
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 76f8edefa637..1fde3a5d7c32 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -115,7 +115,7 @@ nouveau_mem_host(struct ttm_resource *reg, struct ttm_tt *tt)
 
 	mutex_lock(&drm->master.lock);
 	ret = nvif_mem_ctor_type(mmu, "ttmHostMem", cli->mem->oclass, type, PAGE_SHIFT,
-				 reg->num_pages << PAGE_SHIFT,
+				 reg->size,
 				 &args, sizeof(args), &mem->mem);
 	mutex_unlock(&drm->master.lock);
 	return ret;
@@ -128,7 +128,7 @@ nouveau_mem_vram(struct ttm_resource *reg, bool contig, u8 page)
 	struct nouveau_cli *cli = mem->cli;
 	struct nouveau_drm *drm = cli->drm;
 	struct nvif_mmu *mmu = &cli->mmu;
-	u64 size = ALIGN(reg->num_pages << PAGE_SHIFT, 1 << page);
+	u64 size = ALIGN(reg->size, 1 << page);
 	int ret;
 
 	mutex_lock(&drm->master.lock);
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 9602c30928f2..1469a88910e4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -139,7 +139,7 @@ nv04_gart_manager_new(struct ttm_resource_manager *man,
 	mem = nouveau_mem(*res);
 	ttm_resource_init(bo, place, *res);
 	ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
-			   (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
+			   (long)(*res)->size, &mem->vma[0]);
 	if (ret) {
 		nouveau_mem_del(man, *res);
 		return ret;
