drm/ttm: rework on ttm_resource to use size_t type

Change ttm_resource structure from num_pages to size_t size in bytes.
v1 -> v2: change PFN_UP(dst_mem->size) to ttm->num_pages
v1 -> v2: change bo->resource->size to bo->base.size at some places
v1 -> v2: remove the local variable
v1 -> v2: cleanup cmp_size_smaller_first()
v2 -> v3: adding missing PFN_UP in ttm_bo_vm_fault_reserved

Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221027091237.983582-1-Amaranath.Somalapuram@amd.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c

@@ -144,7 +144,7 @@ static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man,
 		node->base.start = node->mm_nodes[0].start;
 	} else {
 		node->mm_nodes[0].start = 0;
-		node->mm_nodes[0].size = node->base.num_pages;
+		node->mm_nodes[0].size = PFN_UP(node->base.size);
 		node->base.start = AMDGPU_BO_INVALID_OFFSET;
 	}
 

drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

@@ -542,6 +542,7 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
 		/* GWS and OA don't need any alignment. */
 		page_align = bp->byte_align;
 		size <<= PAGE_SHIFT;
+
 	} else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
 		/* Both size and alignment must be a multiple of 4. */
 		page_align = ALIGN(bp->byte_align, 4);
@@ -776,7 +777,7 @@ int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
 		return 0;
 	}
 
-	r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.resource->num_pages, &bo->kmap);
+	r = ttm_bo_kmap(&bo->tbo, 0, PFN_UP(bo->tbo.base.size), &bo->kmap);
 	if (r)
 		return r;
 

drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h

@@ -62,7 +62,7 @@ static inline void amdgpu_res_first(struct ttm_resource *res,
 	if (!res)
 		goto fallback;
 
-	BUG_ON(start + size > res->num_pages << PAGE_SHIFT);
+	BUG_ON(start + size > res->size);
 
 	cur->mem_type = res->mem_type;
 
@@ -110,7 +110,7 @@ fallback:
 	cur->size = size;
 	cur->remaining = size;
 	cur->node = NULL;
-	WARN_ON(res && start + size > res->num_pages << PAGE_SHIFT);
+	WARN_ON(res && start + size > res->size);
 	return;
 }
 

drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h

@@ -127,7 +127,7 @@ TRACE_EVENT(amdgpu_bo_create,
 
 	    TP_fast_assign(
 			   __entry->bo = bo;
-			   __entry->pages = bo->tbo.resource->num_pages;
+			   __entry->pages = PFN_UP(bo->tbo.resource->size);
 			   __entry->type = bo->tbo.resource->mem_type;
 			   __entry->prefer = bo->preferred_domains;
 			   __entry->allow = bo->allowed_domains;

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -381,7 +381,7 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
 	dst.offset = 0;
 
 	r = amdgpu_ttm_copy_mem_to_mem(adev, &src, &dst,
-				       new_mem->num_pages << PAGE_SHIFT,
+				       new_mem->size,
 				       amdgpu_bo_encrypted(abo),
 				       bo->base.resv, &fence);
 	if (r)
@@ -424,7 +424,7 @@ error:
 static bool amdgpu_mem_visible(struct amdgpu_device *adev,
 			       struct ttm_resource *mem)
 {
-	u64 mem_size = (u64)mem->num_pages << PAGE_SHIFT;
+	u64 mem_size = (u64)mem->size;
 	struct amdgpu_res_cursor cursor;
 	u64 end;
 
@@ -568,7 +568,7 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_device *bdev,
 				     struct ttm_resource *mem)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
-	size_t bus_size = (size_t)mem->num_pages << PAGE_SHIFT;
+	size_t bus_size = (size_t)mem->size;
 
 	switch (mem->mem_type) {
 	case TTM_PL_SYSTEM:

drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c

@@ -439,7 +439,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 		/* Allocate blocks in desired range */
 		vres->flags |= DRM_BUDDY_RANGE_ALLOCATION;
 
-	remaining_size = (u64)vres->base.num_pages << PAGE_SHIFT;
+	remaining_size = (u64)vres->base.size;
 
 	mutex_lock(&mgr->lock);
 	while (remaining_size) {
@@ -498,7 +498,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 		LIST_HEAD(temp);
 
 		trim_list = &vres->blocks;
-		original_size = (u64)vres->base.num_pages << PAGE_SHIFT;
+		original_size = (u64)vres->base.size;
 
 		/*
 		 * If size value is rounded up to min_block_size, trim the last
@@ -533,8 +533,8 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 			amdgpu_vram_mgr_block_size(block);
 		start >>= PAGE_SHIFT;
 
-		if (start > vres->base.num_pages)
+		if (start > PFN_UP(vres->base.size))
-			start -= vres->base.num_pages;
+			start -= PFN_UP(vres->base.size);
 		else
 			start = 0;
 		vres->base.start = max(vres->base.start, start);

drivers/gpu/drm/i915/gem/i915_gem_ttm.c

@@ -649,7 +649,7 @@ bool i915_ttm_resource_mappable(struct ttm_resource *res)
 	if (!i915_ttm_cpu_maps_iomem(res))
 		return true;
 
-	return bman_res->used_visible_size == bman_res->base.num_pages;
+	return bman_res->used_visible_size == PFN_UP(bman_res->base.size);
 }
 
 static int i915_ttm_io_mem_reserve(struct ttm_device *bdev, struct ttm_resource *mem)

drivers/gpu/drm/i915/i915_scatterlist.c

@@ -158,7 +158,7 @@ struct i915_refct_sgt *i915_rsgt_from_buddy_resource(struct ttm_resource *res,
 						     u32 page_alignment)
 {
 	struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
-	const u64 size = res->num_pages << PAGE_SHIFT;
+	const u64 size = res->size;
 	const u32 max_segment = round_down(UINT_MAX, page_alignment);
 	struct drm_buddy *mm = bman_res->mm;
 	struct list_head *blocks = &bman_res->blocks;
@@ -177,7 +177,7 @@ struct i915_refct_sgt *i915_rsgt_from_buddy_resource(struct ttm_resource *res,
 
 	i915_refct_sgt_init(rsgt, size);
 	st = &rsgt->table;
-	if (sg_alloc_table(st, res->num_pages, GFP_KERNEL)) {
+	if (sg_alloc_table(st, PFN_UP(res->size), GFP_KERNEL)) {
 		i915_refct_sgt_put(rsgt);
 		return ERR_PTR(-ENOMEM);
 	}

drivers/gpu/drm/i915/i915_ttm_buddy_manager.c

@@ -62,8 +62,8 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 	if (place->fpfn || lpfn != man->size)
 		bman_res->flags |= DRM_BUDDY_RANGE_ALLOCATION;
 
-	GEM_BUG_ON(!bman_res->base.num_pages);
+	GEM_BUG_ON(!bman_res->base.size);
-	size = bman_res->base.num_pages << PAGE_SHIFT;
+	size = bman_res->base.size;
 
 	min_page_size = bman->default_page_size;
 	if (bo->page_alignment)
@@ -72,7 +72,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 	GEM_BUG_ON(min_page_size < mm->chunk_size);
 	GEM_BUG_ON(!IS_ALIGNED(size, min_page_size));
 
-	if (place->fpfn + bman_res->base.num_pages != place->lpfn &&
+	if (place->fpfn + PFN_UP(bman_res->base.size) != place->lpfn &&
 	    place->flags & TTM_PL_FLAG_CONTIGUOUS) {
 		unsigned long pages;
 
@@ -108,7 +108,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 		goto err_free_blocks;
 
 	if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
-		u64 original_size = (u64)bman_res->base.num_pages << PAGE_SHIFT;
+		u64 original_size = (u64)bman_res->base.size;
 
 		drm_buddy_block_trim(mm,
 				     original_size,
@@ -116,7 +116,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 	}
 
 	if (lpfn <= bman->visible_size) {
-		bman_res->used_visible_size = bman_res->base.num_pages;
+		bman_res->used_visible_size = PFN_UP(bman_res->base.size);
 	} else {
 		struct drm_buddy_block *block;
 
@@ -228,7 +228,7 @@ static bool i915_ttm_buddy_man_compatible(struct ttm_resource_manager *man,
 
 	if (!place->fpfn &&
 	    place->lpfn == i915_ttm_buddy_man_visible_size(man))
-		return bman_res->used_visible_size == res->num_pages;
+		return bman_res->used_visible_size == PFN_UP(res->size);
 
 	/* Check each drm buddy block individually */
 	list_for_each_entry(block, &bman_res->blocks, link) {

drivers/gpu/drm/i915/intel_region_ttm.c

@@ -244,7 +244,7 @@ void intel_region_ttm_resource_free(struct intel_memory_region *mem,
 	struct ttm_resource_manager *man = mem->region_private;
 	struct ttm_buffer_object mock_bo = {};
 
-	mock_bo.base.size = res->num_pages << PAGE_SHIFT;
+	mock_bo.base.size = res->size;
 	mock_bo.bdev = &mem->i915->bdev;
 	res->bo = &mock_bo;
 

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.base.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) {

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;
 

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;

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),

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;
 

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;
 

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;
 

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) |

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.base.size),
 					  &nvbo->kmap);
 			if (ret) {
 				NV_PRINTK(err, cli, "failed kmap for reloc\n");
@@ -868,8 +868,7 @@ revalidate:
 			if (unlikely(cmd != req->suffix0)) {
 				if (!nvbo->kmap.virtual) {
 					ret = ttm_bo_kmap(&nvbo->bo, 0,
-							  nvbo->bo.resource->
+							  PFN_UP(nvbo->bo.base.size),
-							  num_pages,
 							  &nvbo->kmap);
 					if (ret) {
 						WIND_RING(chan);

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);

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;

drivers/gpu/drm/radeon/radeon_cs.c

@@ -400,8 +400,11 @@ static int cmp_size_smaller_first(void *priv, const struct list_head *a,
 	struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head);
 
 	/* Sort A before B if A is smaller. */
-	return (int)la->robj->tbo.resource->num_pages -
+	if (la->robj->tbo.base.size > lb->robj->tbo.base.size)
-		(int)lb->robj->tbo.resource->num_pages;
+		return 1;
+	if (la->robj->tbo.base.size < lb->robj->tbo.base.size)
+		return -1;
+	return 0;
 }
 
 /**

drivers/gpu/drm/radeon/radeon_object.c

@@ -232,7 +232,7 @@ int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
 		}
 		return 0;
 	}
-	r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.resource->num_pages, &bo->kmap);
+	r = ttm_bo_kmap(&bo->tbo, 0, PFN_UP(bo->tbo.base.size), &bo->kmap);
 	if (r) {
 		return r;
 	}
@@ -737,7 +737,7 @@ vm_fault_t radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 	if (bo->resource->mem_type != TTM_PL_VRAM)
 		return 0;
 
-	size = bo->resource->num_pages << PAGE_SHIFT;
+	size = bo->resource->size;
 	offset = bo->resource->start << PAGE_SHIFT;
 	if ((offset + size) <= rdev->mc.visible_vram_size)
 		return 0;

drivers/gpu/drm/radeon/radeon_trace.h

@@ -22,7 +22,7 @@ TRACE_EVENT(radeon_bo_create,
 
 	    TP_fast_assign(
 			   __entry->bo = bo;
-			   __entry->pages = bo->tbo.resource->num_pages;
+			   __entry->pages = PFN_UP(bo->tbo.resource->size);
 			   ),
 	    TP_printk("bo=%p, pages=%u", __entry->bo, __entry->pages)
 );

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -181,7 +181,7 @@ static int radeon_move_blit(struct ttm_buffer_object *bo,
 
 	BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0);
 
-	num_pages = new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
+	num_pages = PFN_UP(new_mem->size) * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
 	fence = radeon_copy(rdev, old_start, new_start, num_pages, bo->base.resv);
 	if (IS_ERR(fence))
 		return PTR_ERR(fence);
@@ -268,7 +268,7 @@ out:
 static int radeon_ttm_io_mem_reserve(struct ttm_device *bdev, struct ttm_resource *mem)
 {
 	struct radeon_device *rdev = radeon_get_rdev(bdev);
-	size_t bus_size = (size_t)mem->num_pages << PAGE_SHIFT;
+	size_t bus_size = (size_t)mem->size;
 
 	switch (mem->mem_type) {
 	case TTM_PL_SYSTEM:

drivers/gpu/drm/ttm/ttm_bo.c

@@ -51,9 +51,6 @@ static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
 	struct ttm_resource_manager *man;
 	int i, mem_type;
 
-	drm_printf(&p, "No space for %p (%lu pages, %zuK, %zuM)\n",
-		   bo, bo->resource->num_pages, bo->base.size >> 10,
-		   bo->base.size >> 20);
 	for (i = 0; i < placement->num_placement; i++) {
 		mem_type = placement->placement[i].mem_type;
 		drm_printf(&p, "  placement[%d]=0x%08X (%d)\n",

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -173,7 +173,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
 
 	clear = src_iter->ops->maps_tt && (!ttm || !ttm_tt_is_populated(ttm));
 	if (!(clear && ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC)))
-		ttm_move_memcpy(clear, dst_mem->num_pages, dst_iter, src_iter);
+		ttm_move_memcpy(clear, ttm->num_pages, dst_iter, src_iter);
 
 	if (!src_iter->ops->maps_tt)
 		ttm_kmap_iter_linear_io_fini(&_src_iter.io, bdev, src_mem);
@@ -357,9 +357,9 @@ int ttm_bo_kmap(struct ttm_buffer_object *bo,
 
 	map->virtual = NULL;
 	map->bo = bo;
-	if (num_pages > bo->resource->num_pages)
+	if (num_pages > PFN_UP(bo->resource->size))
 		return -EINVAL;
-	if ((start_page + num_pages) > bo->resource->num_pages)
+	if ((start_page + num_pages) > PFN_UP(bo->resource->size))
 		return -EINVAL;
 
 	ret = ttm_mem_io_reserve(bo->bdev, bo->resource);

drivers/gpu/drm/ttm/ttm_bo_vm.c

@@ -217,7 +217,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
 	page_last = vma_pages(vma) + vma->vm_pgoff -
 		drm_vma_node_start(&bo->base.vma_node);
 
-	if (unlikely(page_offset >= bo->resource->num_pages))
+	if (unlikely(page_offset >= PFN_UP(bo->base.size)))
 		return VM_FAULT_SIGBUS;
 
 	prot = ttm_io_prot(bo, bo->resource, prot);
@@ -412,7 +412,7 @@ int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr,
 		 << PAGE_SHIFT);
 	int ret;
 
-	if (len < 1 || (offset + len) >> PAGE_SHIFT > bo->resource->num_pages)
+	if (len < 1 || (offset + len) > bo->base.size)
 		return -EIO;
 
 	ret = ttm_bo_reserve(bo, true, false, NULL);

drivers/gpu/drm/ttm/ttm_range_manager.c

@@ -83,7 +83,7 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man,
 
 	spin_lock(&rman->lock);
 	ret = drm_mm_insert_node_in_range(mm, &node->mm_nodes[0],
-					  node->base.num_pages,
+					  PFN_UP(node->base.size),
 					  bo->page_alignment, 0,
 					  place->fpfn, lpfn, mode);
 	spin_unlock(&rman->lock);

drivers/gpu/drm/ttm/ttm_resource.c

@@ -177,7 +177,7 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
 	struct ttm_resource_manager *man;
 
 	res->start = 0;
-	res->num_pages = PFN_UP(bo->base.size);
+	res->size = bo->base.size;
 	res->mem_type = place->mem_type;
 	res->placement = place->flags;
 	res->bus.addr = NULL;
@@ -192,7 +192,7 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
 		list_add_tail(&res->lru, &bo->bdev->pinned);
 	else
 		list_add_tail(&res->lru, &man->lru[bo->priority]);
-	man->usage += res->num_pages << PAGE_SHIFT;
+	man->usage += res->size;
 	spin_unlock(&bo->bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_init);
@@ -214,7 +214,7 @@ void ttm_resource_fini(struct ttm_resource_manager *man,
 
 	spin_lock(&bdev->lru_lock);
 	list_del_init(&res->lru);
-	man->usage -= res->num_pages << PAGE_SHIFT;
+	man->usage -= res->size;
 	spin_unlock(&bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_fini);
@@ -665,17 +665,15 @@ ttm_kmap_iter_linear_io_init(struct ttm_kmap_iter_linear_io *iter_io,
 		iosys_map_set_vaddr(&iter_io->dmap, mem->bus.addr);
 		iter_io->needs_unmap = false;
 	} else {
-		size_t bus_size = (size_t)mem->num_pages << PAGE_SHIFT;
-
 		iter_io->needs_unmap = true;
 		memset(&iter_io->dmap, 0, sizeof(iter_io->dmap));
 		if (mem->bus.caching == ttm_write_combined)
 			iosys_map_set_vaddr_iomem(&iter_io->dmap,
 						  ioremap_wc(mem->bus.offset,
-							     bus_size));
+							     mem->size));
 		else if (mem->bus.caching == ttm_cached)
 			iosys_map_set_vaddr(&iter_io->dmap,
-					    memremap(mem->bus.offset, bus_size,
+					    memremap(mem->bus.offset, mem->size,
 						     MEMREMAP_WB |
 						     MEMREMAP_WT |
 						     MEMREMAP_WC));
@@ -684,7 +682,7 @@ ttm_kmap_iter_linear_io_init(struct ttm_kmap_iter_linear_io *iter_io,
 		if (iosys_map_is_null(&iter_io->dmap))
 			iosys_map_set_vaddr_iomem(&iter_io->dmap,
 						  ioremap(mem->bus.offset,
-							  bus_size));
+							  mem->size));
 
 		if (iosys_map_is_null(&iter_io->dmap)) {
 			ret = -ENOMEM;

drivers/gpu/drm/vmwgfx/vmwgfx_blit.c

@@ -483,8 +483,8 @@ int vmw_bo_cpu_blit(struct ttm_buffer_object *dst,
 	d.src_addr = NULL;
 	d.dst_pages = dst->ttm->pages;
 	d.src_pages = src->ttm->pages;
-	d.dst_num_pages = dst->resource->num_pages;
+	d.dst_num_pages = PFN_UP(dst->resource->size);
-	d.src_num_pages = src->resource->num_pages;
+	d.src_num_pages = PFN_UP(src->resource->size);
 	d.dst_prot = ttm_io_prot(dst, dst->resource, PAGE_KERNEL);
 	d.src_prot = ttm_io_prot(src, src->resource, PAGE_KERNEL);
 	d.diff = diff;

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

@@ -194,7 +194,7 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
 	int ret = 0;
 
 	place = vmw_vram_placement.placement[0];
-	place.lpfn = bo->resource->num_pages;
+	place.lpfn = PFN_UP(bo->resource->size);
 	placement.num_placement = 1;
 	placement.placement = &place;
 	placement.num_busy_placement = 1;
@@ -211,7 +211,7 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
 	 * that situation.
 	 */
 	if (bo->resource->mem_type == TTM_PL_VRAM &&
-	    bo->resource->start < bo->resource->num_pages &&
+	    bo->resource->start < PFN_UP(bo->resource->size) &&
 	    bo->resource->start > 0 &&
 	    buf->base.pin_count == 0) {
 		ctx.interruptible = false;
@@ -352,7 +352,7 @@ void *vmw_bo_map_and_cache(struct vmw_buffer_object *vbo)
 	if (virtual)
 		return virtual;
 
-	ret = ttm_bo_kmap(bo, 0, bo->resource->num_pages, &vbo->map);
+	ret = ttm_bo_kmap(bo, 0, PFN_UP(bo->base.size), &vbo->map);
 	if (ret)
 		DRM_ERROR("Buffer object map failed: %d.\n", ret);
 

drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c

@@ -443,7 +443,7 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
 	 * Do a page by page copy of COTables. This eliminates slow vmap()s.
 	 * This should really be a TTM utility.
 	 */
-	for (i = 0; i < old_bo->resource->num_pages; ++i) {
+	for (i = 0; i < PFN_UP(old_bo->resource->size); ++i) {
 		bool dummy;
 
 		ret = ttm_bo_kmap(old_bo, i, 1, &old_map);

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

@@ -1047,7 +1047,7 @@ static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
 
 	if (unlikely(new_query_bo != sw_context->cur_query_bo)) {
 
-		if (unlikely(new_query_bo->base.resource->num_pages > 4)) {
+		if (unlikely(PFN_UP(new_query_bo->base.resource->size) > 4)) {
 			VMW_DEBUG_USER("Query buffer too large.\n");
 			return -EINVAL;
 		}

drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c

@@ -71,7 +71,7 @@ static int vmw_gmrid_man_get_node(struct ttm_resource_manager *man,
 	spin_lock(&gman->lock);
 
 	if (gman->max_gmr_pages > 0) {
-		gman->used_gmr_pages += (*res)->num_pages;
+		gman->used_gmr_pages += PFN_UP((*res)->size);
 		/*
 		 * Because the graphics memory is a soft limit we can try to
 		 * expand it instead of letting the userspace apps crash.
@@ -114,7 +114,7 @@ static int vmw_gmrid_man_get_node(struct ttm_resource_manager *man,
 	return 0;
 
 nospace:
-	gman->used_gmr_pages -= (*res)->num_pages;
+	gman->used_gmr_pages -= PFN_UP((*res)->size);
 	spin_unlock(&gman->lock);
 	ida_free(&gman->gmr_ida, id);
 	ttm_resource_fini(man, *res);
@@ -129,7 +129,7 @@ static void vmw_gmrid_man_put_node(struct ttm_resource_manager *man,
 
 	ida_free(&gman->gmr_ida, res->start);
 	spin_lock(&gman->lock);
-	gman->used_gmr_pages -= res->num_pages;
+	gman->used_gmr_pages -= PFN_UP(res->size);
 	spin_unlock(&gman->lock);
 	ttm_resource_fini(man, res);
 	kfree(res);

drivers/gpu/drm/vmwgfx/vmwgfx_page_dirty.c

@@ -230,7 +230,7 @@ void vmw_bo_dirty_unmap(struct vmw_buffer_object *vbo,
 int vmw_bo_dirty_add(struct vmw_buffer_object *vbo)
 {
 	struct vmw_bo_dirty *dirty = vbo->dirty;
-	pgoff_t num_pages = vbo->base.resource->num_pages;
+	pgoff_t num_pages = PFN_UP(vbo->base.resource->size);
 	size_t size;
 	int ret;
 
@@ -395,7 +395,7 @@ vm_fault_t vmw_bo_vm_mkwrite(struct vm_fault *vmf)
 		return ret;
 
 	page_offset = vmf->pgoff - drm_vma_node_start(&bo->base.vma_node);
-	if (unlikely(page_offset >= bo->resource->num_pages)) {
+	if (unlikely(page_offset >= PFN_UP(bo->resource->size))) {
 		ret = VM_FAULT_SIGBUS;
 		goto out_unlock;
 	}
@@ -438,7 +438,7 @@ vm_fault_t vmw_bo_vm_fault(struct vm_fault *vmf)
 
 		page_offset = vmf->pgoff -
 			drm_vma_node_start(&bo->base.vma_node);
-		if (page_offset >= bo->resource->num_pages ||
+		if (page_offset >= PFN_UP(bo->resource->size) ||
 		    vmw_resources_clean(vbo, page_offset,
 					page_offset + PAGE_SIZE,
 					&allowed_prefault)) {

include/drm/ttm/ttm_resource.h

@@ -197,7 +197,7 @@ struct ttm_bus_placement {
  * struct ttm_resource
  *
  * @start: Start of the allocation.
- * @num_pages: Actual size of resource in pages.
+ * @size: Actual size of resource in bytes.
  * @mem_type: Resource type of the allocation.
  * @placement: Placement flags.
  * @bus: Placement on io bus accessible to the CPU
@@ -208,7 +208,7 @@ struct ttm_bus_placement {
  */
 struct ttm_resource {
 	unsigned long start;
-	unsigned long num_pages;
+	size_t size;
 	uint32_t mem_type;
 	uint32_t placement;
 	struct ttm_bus_placement bus;