Merge branch 'qxl-fixes' of git://people.freedesktop.org/~airlied/linux

Pull qxl drm fixes from Dave Airlie:
"Okay as I warned, the qxl driver was running a bit free and loose with
its ttm object reservations and the new lockdep enabled reservation
tracking shone a bright light into it, it also with the new
reservations mutexes hits a possible deadlock during boot.

The first patch is a real fix to render the console correctly as the
driver used to just drop irq renderering as too hard, this also fixes
a sleeping while atomic warning.

The other two patches are the big ugly ones that redo how the driver
allocates objects and reserves them and makes things all work
properly, I've tested this in a VM, and compared to the current code
which hits a lockdep warning and the sleep while atomic warning before
failing.

So sorry this is coming in late, I should have tested qxl before
merging the mutex code, but I'd rather just fix qxl with this than
revert the reservations code at this point"

* 'qxl-fixes' of git://people.freedesktop.org/~airlied/linux:
qxl: convert qxl driver to proper use for reservations
qxl: allow creation of pre-pinned objects and use for releases.
drm/qxl: add delayed fb operations

drivers/gpu/drm/qxl/qxl_cmd.c

···
 			      uint32_t type, bool interruptible)
 {
 	struct qxl_command cmd;
+	struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
 
 	cmd.type = type;
-	cmd.data = qxl_bo_physical_address(qdev, release->bos[0], release->release_offset);
+	cmd.data = qxl_bo_physical_address(qdev, to_qxl_bo(entry->tv.bo), release->release_offset);
 
 	return qxl_ring_push(qdev->command_ring, &cmd, interruptible);
 }
···
 			     uint32_t type, bool interruptible)
 {
 	struct qxl_command cmd;
+	struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
 
 	cmd.type = type;
-	cmd.data = qxl_bo_physical_address(qdev, release->bos[0], release->release_offset);
+	cmd.data = qxl_bo_physical_address(qdev, to_qxl_bo(entry->tv.bo), release->release_offset);
 
 	return qxl_ring_push(qdev->cursor_ring, &cmd, interruptible);
 }
···
 	struct qxl_release *release;
 	uint64_t id, next_id;
 	int i = 0;
-	int ret;
 	union qxl_release_info *info;
 
 	while (qxl_ring_pop(qdev->release_ring, &id)) {
···
 			if (release == NULL)
 				break;
 
-			ret = qxl_release_reserve(qdev, release, false);
-			if (ret) {
-				qxl_io_log(qdev, "failed to reserve release on garbage collect %lld\n", id);
-				DRM_ERROR("failed to reserve release %lld\n", id);
-			}
-
 			info = qxl_release_map(qdev, release);
 			next_id = info->next;
 			qxl_release_unmap(qdev, release, info);
 
-			qxl_release_unreserve(qdev, release);
 			QXL_INFO(qdev, "popped %lld, next %lld\n", id,
 				next_id);
 
···
 	return i;
 }
 
-int qxl_alloc_bo_reserved(struct qxl_device *qdev, unsigned long size,
+int qxl_alloc_bo_reserved(struct qxl_device *qdev,
+			  struct qxl_release *release,
+			  unsigned long size,
 			  struct qxl_bo **_bo)
 {
 	struct qxl_bo *bo;
 	int ret;
 
 	ret = qxl_bo_create(qdev, size, false /* not kernel - device */,
-			    QXL_GEM_DOMAIN_VRAM, NULL, &bo);
+			    false, QXL_GEM_DOMAIN_VRAM, NULL, &bo);
 	if (ret) {
 		DRM_ERROR("failed to allocate VRAM BO\n");
 		return ret;
 	}
-	ret = qxl_bo_reserve(bo, false);
-	if (unlikely(ret != 0))
+	ret = qxl_release_list_add(release, bo);
+	if (ret)
 		goto out_unref;
 
 	*_bo = bo;
 	return 0;
 out_unref:
 	qxl_bo_unref(&bo);
-	return 0;
+	return ret;
 }
 
 static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port, bool intr)
···
 	if (ret)
 		return ret;
 
+	ret = qxl_release_reserve_list(release, true);
+	if (ret)
+		return ret;
+
 	cmd = (struct qxl_surface_cmd *)qxl_release_map(qdev, release);
 	cmd->type = QXL_SURFACE_CMD_CREATE;
 	cmd->u.surface_create.format = surf->surf.format;
···
 
 	surf->surf_create = release;
 
-	/* no need to add a release to the fence for this bo,
+	/* no need to add a release to the fence for this surface bo,
 	   since it is only released when we ask to destroy the surface
 	   and it would never signal otherwise */
-	qxl_fence_releaseable(qdev, release);
-
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_SURFACE, false);
-
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
 
 	surf->hw_surf_alloc = true;
 	spin_lock(&qdev->surf_id_idr_lock);
···
 	cmd->surface_id = id;
 	qxl_release_unmap(qdev, release, &cmd->release_info);
 
-	qxl_fence_releaseable(qdev, release);
-
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_SURFACE, false);
 
-	qxl_release_unreserve(qdev, release);
-
+	qxl_release_fence_buffer_objects(release);
 
 	return 0;
 }

drivers/gpu/drm/qxl/qxl_display.c

···
 	kfree(qxl_crtc);
 }
 
-static void
+static int
 qxl_hide_cursor(struct qxl_device *qdev)
 {
 	struct qxl_release *release;
···
 
 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd), QXL_RELEASE_CURSOR_CMD,
 					 &release, NULL);
+	if (ret)
+		return ret;
+
+	ret = qxl_release_reserve_list(release, true);
+	if (ret) {
+		qxl_release_free(qdev, release);
+		return ret;
+	}
 
 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 	cmd->type = QXL_CURSOR_HIDE;
 	qxl_release_unmap(qdev, release, &cmd->release_info);
 
-	qxl_fence_releaseable(qdev, release);
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
+	return 0;
 }
 
 static int qxl_crtc_cursor_set2(struct drm_crtc *crtc,
···
 
 	int size = 64*64*4;
 	int ret = 0;
-	if (!handle) {
-		qxl_hide_cursor(qdev);
-		return 0;
-	}
+	if (!handle)
+		return qxl_hide_cursor(qdev);
 
 	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 	if (!obj) {
···
 		goto out_unref;
 
 	ret = qxl_bo_pin(user_bo, QXL_GEM_DOMAIN_CPU, NULL);
+	qxl_bo_unreserve(user_bo);
 	if (ret)
-		goto out_unreserve;
+		goto out_unref;
 
 	ret = qxl_bo_kmap(user_bo, &user_ptr);
 	if (ret)
···
 					 &release, NULL);
 	if (ret)
 		goto out_kunmap;
-	ret = qxl_alloc_bo_reserved(qdev, sizeof(struct qxl_cursor) + size,
-				    &cursor_bo);
+
+	ret = qxl_alloc_bo_reserved(qdev, release, sizeof(struct qxl_cursor) + size,
+			   &cursor_bo);
 	if (ret)
 		goto out_free_release;
-	ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
+
+	ret = qxl_release_reserve_list(release, false);
 	if (ret)
 		goto out_free_bo;
+
+	ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
+	if (ret)
+		goto out_backoff;
 
 	cursor->header.unique = 0;
 	cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
···
 
 	qxl_bo_kunmap(cursor_bo);
 
-	/* finish with the userspace bo */
 	qxl_bo_kunmap(user_bo);
-	qxl_bo_unpin(user_bo);
-	qxl_bo_unreserve(user_bo);
-	drm_gem_object_unreference_unlocked(obj);
 
 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 	cmd->type = QXL_CURSOR_SET;
···
 	cmd->u.set.position.y = qcrtc->cur_y;
 
 	cmd->u.set.shape = qxl_bo_physical_address(qdev, cursor_bo, 0);
-	qxl_release_add_res(qdev, release, cursor_bo);
 
 	cmd->u.set.visible = 1;
 	qxl_release_unmap(qdev, release, &cmd->release_info);
 
-	qxl_fence_releaseable(qdev, release);
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
 
-	qxl_bo_unreserve(cursor_bo);
+	/* finish with the userspace bo */
+	ret = qxl_bo_reserve(user_bo, false);
+	if (!ret) {
+		qxl_bo_unpin(user_bo);
+		qxl_bo_unreserve(user_bo);
+	}
+	drm_gem_object_unreference_unlocked(obj);
+
 	qxl_bo_unref(&cursor_bo);
 
 	return ret;
+
+out_backoff:
+	qxl_release_backoff_reserve_list(release);
 out_free_bo:
 	qxl_bo_unref(&cursor_bo);
 out_free_release:
-	qxl_release_unreserve(qdev, release);
 	qxl_release_free(qdev, release);
 out_kunmap:
 	qxl_bo_kunmap(user_bo);
 out_unpin:
 	qxl_bo_unpin(user_bo);
-out_unreserve:
-	qxl_bo_unreserve(user_bo);
 out_unref:
 	drm_gem_object_unreference_unlocked(obj);
 	return ret;
···
 
 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd), QXL_RELEASE_CURSOR_CMD,
 				   &release, NULL);
+	if (ret)
+		return ret;
+
+	ret = qxl_release_reserve_list(release, true);
+	if (ret) {
+		qxl_release_free(qdev, release);
+		return ret;
+	}
 
 	qcrtc->cur_x = x;
 	qcrtc->cur_y = y;
···
 	cmd->u.position.y = qcrtc->cur_y;
 	qxl_release_unmap(qdev, release, &cmd->release_info);
 
-	qxl_fence_releaseable(qdev, release);
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
+
 	return 0;
 }
 

drivers/gpu/drm/qxl/qxl_draw.c

···
 #include "qxl_drv.h"
 #include "qxl_object.h"
 
+static int alloc_clips(struct qxl_device *qdev,
+		       struct qxl_release *release,
+		       unsigned num_clips,
+		       struct qxl_bo **clips_bo)
+{
+	int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
+
+	return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
+}
+
 /* returns a pointer to the already allocated qxl_rect array inside
  * the qxl_clip_rects. This is *not* the same as the memory allocated
  * on the device, it is offset to qxl_clip_rects.chunk.data */
 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
 					      struct qxl_drawable *drawable,
 					      unsigned num_clips,
-					      struct qxl_bo **clips_bo,
-					      struct qxl_release *release)
+					      struct qxl_bo *clips_bo)
 {
 	struct qxl_clip_rects *dev_clips;
 	int ret;
-	int size = sizeof(*dev_clips) + sizeof(struct qxl_rect) * num_clips;
-	ret = qxl_alloc_bo_reserved(qdev, size, clips_bo);
-	if (ret)
-		return NULL;
 
-	ret = qxl_bo_kmap(*clips_bo, (void **)&dev_clips);
+	ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
 	if (ret) {
-		qxl_bo_unref(clips_bo);
 		return NULL;
 	}
 	dev_clips->num_rects = num_clips;
···
 }
 
 static int
-make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
-	      const struct qxl_rect *rect,
-	      struct qxl_release **release)
+alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
 {
-	struct qxl_drawable *drawable;
-	int i, ret;
-
-	ret = qxl_alloc_release_reserved(qdev, sizeof(*drawable),
+	int ret;
+	ret = qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
 					 QXL_RELEASE_DRAWABLE, release,
 					 NULL);
-	if (ret)
-		return ret;
+	return ret;
+}
 
-	drawable = (struct qxl_drawable *)qxl_release_map(qdev, *release);
+static void
+free_drawable(struct qxl_device *qdev, struct qxl_release *release)
+{
+	qxl_release_free(qdev, release);
+}
+
+/* release needs to be reserved at this point */
+static int
+make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
+	      const struct qxl_rect *rect,
+	      struct qxl_release *release)
+{
+	struct qxl_drawable *drawable;
+	int i;
+
+	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
+	if (!drawable)
+		return -ENOMEM;
+
 	drawable->type = type;
 
 	drawable->surface_id = surface;		/* Only primary for now */
···
 		drawable->bbox = *rect;
 
 	drawable->mm_time = qdev->rom->mm_clock;
-	qxl_release_unmap(qdev, *release, &drawable->release_info);
+	qxl_release_unmap(qdev, release, &drawable->release_info);
 	return 0;
 }
 
-static int qxl_palette_create_1bit(struct qxl_bo **palette_bo,
+static int alloc_palette_object(struct qxl_device *qdev,
+				struct qxl_release *release,
+				struct qxl_bo **palette_bo)
+{
+	return qxl_alloc_bo_reserved(qdev, release,
+				     sizeof(struct qxl_palette) + sizeof(uint32_t) * 2,
+				     palette_bo);
+}
+
+static int qxl_palette_create_1bit(struct qxl_bo *palette_bo,
+				   struct qxl_release *release,
 				   const struct qxl_fb_image *qxl_fb_image)
 {
-	struct qxl_device *qdev = qxl_fb_image->qdev;
 	const struct fb_image *fb_image = &qxl_fb_image->fb_image;
 	uint32_t visual = qxl_fb_image->visual;
 	const uint32_t *pseudo_palette = qxl_fb_image->pseudo_palette;
···
 	static uint64_t unique; /* we make no attempt to actually set this
 				 * correctly globaly, since that would require
 				 * tracking all of our palettes. */
-
-	ret = qxl_alloc_bo_reserved(qdev,
-				    sizeof(struct qxl_palette) + sizeof(uint32_t) * 2,
-				    palette_bo);
-
-	ret = qxl_bo_kmap(*palette_bo, (void **)&pal);
+	ret = qxl_bo_kmap(palette_bo, (void **)&pal);
 	pal->num_ents = 2;
 	pal->unique = unique++;
 	if (visual == FB_VISUAL_TRUECOLOR || visual == FB_VISUAL_DIRECTCOLOR) {
···
 	}
 	pal->ents[0] = bgcolor;
 	pal->ents[1] = fgcolor;
-	qxl_bo_kunmap(*palette_bo);
+	qxl_bo_kunmap(palette_bo);
 	return 0;
 }
 
···
 	const char *src = fb_image->data;
 	int depth = fb_image->depth;
 	struct qxl_release *release;
-	struct qxl_bo *image_bo;
 	struct qxl_image *image;
 	int ret;
-
+	struct qxl_drm_image *dimage;
+	struct qxl_bo *palette_bo = NULL;
 	if (stride == 0)
 		stride = depth * width / 8;
+
+	ret = alloc_drawable(qdev, &release);
+	if (ret)
+		return;
+
+	ret = qxl_image_alloc_objects(qdev, release,
+				      &dimage,
+				      height, stride);
+	if (ret)
+		goto out_free_drawable;
+
+	if (depth == 1) {
+		ret = alloc_palette_object(qdev, release, &palette_bo);
+		if (ret)
+			goto out_free_image;
+	}
+
+	/* do a reservation run over all the objects we just allocated */
+	ret = qxl_release_reserve_list(release, true);
+	if (ret)
+		goto out_free_palette;
 
 	rect.left = x;
 	rect.right = x + width;
 	rect.top = y;
 	rect.bottom = y + height;
 
-	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &rect, &release);
-	if (ret)
-		return;
-
-	ret = qxl_image_create(qdev, release, &image_bo,
-			       (const uint8_t *)src, 0, 0,
-			       width, height, depth, stride);
+	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &rect, release);
 	if (ret) {
-		qxl_release_unreserve(qdev, release);
+		qxl_release_backoff_reserve_list(release);
+		goto out_free_palette;
+	}
+
+	ret = qxl_image_init(qdev, release, dimage,
+			     (const uint8_t *)src, 0, 0,
+			     width, height, depth, stride);
+	if (ret) {
+		qxl_release_backoff_reserve_list(release);
 		qxl_release_free(qdev, release);
 		return;
 	}
 
 	if (depth == 1) {
-		struct qxl_bo *palette_bo;
 		void *ptr;
-		ret = qxl_palette_create_1bit(&palette_bo, qxl_fb_image);
-		qxl_release_add_res(qdev, release, palette_bo);
+		ret = qxl_palette_create_1bit(palette_bo, release, qxl_fb_image);
 
-		ptr = qxl_bo_kmap_atomic_page(qdev, image_bo, 0);
+		ptr = qxl_bo_kmap_atomic_page(qdev, dimage->bo, 0);
 		image = ptr;
 		image->u.bitmap.palette =
 			qxl_bo_physical_address(qdev, palette_bo, 0);
-		qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr);
-		qxl_bo_unreserve(palette_bo);
-		qxl_bo_unref(&palette_bo);
+		qxl_bo_kunmap_atomic_page(qdev, dimage->bo, ptr);
 	}
 
 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
···
 	drawable->u.copy.mask.bitmap = 0;
 
 	drawable->u.copy.src_bitmap =
-		qxl_bo_physical_address(qdev, image_bo, 0);
+		qxl_bo_physical_address(qdev, dimage->bo, 0);
 	qxl_release_unmap(qdev, release, &drawable->release_info);
 
-	qxl_release_add_res(qdev, release, image_bo);
-	qxl_bo_unreserve(image_bo);
-	qxl_bo_unref(&image_bo);
-
-	qxl_fence_releaseable(qdev, release);
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
+
+out_free_palette:
+	if (palette_bo)
+		qxl_bo_unref(&palette_bo);
+out_free_image:
+	qxl_image_free_objects(qdev, dimage);
+out_free_drawable:
+	if (ret)
+		free_drawable(qdev, release);
 }
 
 /* push a draw command using the given clipping rectangles as
···
 	int depth = qxl_fb->base.bits_per_pixel;
 	uint8_t *surface_base;
 	struct qxl_release *release;
-	struct qxl_bo *image_bo;
 	struct qxl_bo *clips_bo;
+	struct qxl_drm_image *dimage;
 	int ret;
+
+	ret = alloc_drawable(qdev, &release);
+	if (ret)
+		return;
 
 	left = clips->x1;
 	right = clips->x2;
···
 
 	width = right - left;
 	height = bottom - top;
+
+	ret = alloc_clips(qdev, release, num_clips, &clips_bo);
+	if (ret)
+		goto out_free_drawable;
+
+	ret = qxl_image_alloc_objects(qdev, release,
+				      &dimage,
+				      height, stride);
+	if (ret)
+		goto out_free_clips;
+
+	/* do a reservation run over all the objects we just allocated */
+	ret = qxl_release_reserve_list(release, true);
+	if (ret)
+		goto out_free_image;
+
 	drawable_rect.left = left;
 	drawable_rect.right = right;
 	drawable_rect.top = top;
 	drawable_rect.bottom = bottom;
+
 	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
-			    &release);
+			    release);
 	if (ret)
-		return;
+		goto out_release_backoff;
 
 	ret = qxl_bo_kmap(bo, (void **)&surface_base);
 	if (ret)
-		goto out_unref;
+		goto out_release_backoff;
 
-	ret = qxl_image_create(qdev, release, &image_bo, surface_base,
-			       left, top, width, height, depth, stride);
+
+	ret = qxl_image_init(qdev, release, dimage, surface_base,
+			     left, top, width, height, depth, stride);
 	qxl_bo_kunmap(bo);
 	if (ret)
-		goto out_unref;
+		goto out_release_backoff;
 
-	rects = drawable_set_clipping(qdev, drawable, num_clips, &clips_bo, release);
-	if (!rects) {
-		qxl_bo_unref(&image_bo);
-		goto out_unref;
-	}
+	rects = drawable_set_clipping(qdev, drawable, num_clips, clips_bo);
+	if (!rects)
+		goto out_release_backoff;
+
 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 
 	drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
 	drawable->clip.data = qxl_bo_physical_address(qdev,
 						      clips_bo, 0);
-	qxl_release_add_res(qdev, release, clips_bo);
 
 	drawable->u.copy.src_area.top = 0;
 	drawable->u.copy.src_area.bottom = height;
···
 	drawable->u.copy.mask.pos.y = 0;
 	drawable->u.copy.mask.bitmap = 0;
 
-	drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, image_bo, 0);
+	drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
 	qxl_release_unmap(qdev, release, &drawable->release_info);
-	qxl_release_add_res(qdev, release, image_bo);
-	qxl_bo_unreserve(image_bo);
-	qxl_bo_unref(&image_bo);
+
 	clips_ptr = clips;
 	for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 		rects[i].left   = clips_ptr->x1;
···
 		rects[i].bottom = clips_ptr->y2;
 	}
 	qxl_bo_kunmap(clips_bo);
-	qxl_bo_unreserve(clips_bo);
-	qxl_bo_unref(&clips_bo);
 
-	qxl_fence_releaseable(qdev, release);
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
-	qxl_release_unreserve(qdev, release);
-	return;
+	qxl_release_fence_buffer_objects(release);
 
-out_unref:
-	qxl_release_unreserve(qdev, release);
-	qxl_release_free(qdev, release);
+out_release_backoff:
+	if (ret)
+		qxl_release_backoff_reserve_list(release);
+out_free_image:
+	qxl_image_free_objects(qdev, dimage);
+out_free_clips:
+	qxl_bo_unref(&clips_bo);
+out_free_drawable:
+	/* only free drawable on error */
+	if (ret)
+		free_drawable(qdev, release);
+
 }
 
 void qxl_draw_copyarea(struct qxl_device *qdev,
···
 	struct qxl_release *release;
 	int ret;
 
+	ret = alloc_drawable(qdev, &release);
+	if (ret)
+		return;
+
+	/* do a reservation run over all the objects we just allocated */
+	ret = qxl_release_reserve_list(release, true);
+	if (ret)
+		goto out_free_release;
+
 	rect.left = dx;
 	rect.top = dy;
 	rect.right = dx + width;
 	rect.bottom = dy + height;
-	ret = make_drawable(qdev, 0, QXL_COPY_BITS, &rect, &release);
-	if (ret)
-		return;
+	ret = make_drawable(qdev, 0, QXL_COPY_BITS, &rect, release);
+	if (ret) {
+		qxl_release_backoff_reserve_list(release);
+		goto out_free_release;
+	}
 
 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 	drawable->u.copy_bits.src_pos.x = sx;
 	drawable->u.copy_bits.src_pos.y = sy;
-
 	qxl_release_unmap(qdev, release, &drawable->release_info);
-	qxl_fence_releaseable(qdev, release);
+
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
+
+out_free_release:
+	if (ret)
+		free_drawable(qdev, release);
 }
 
 void qxl_draw_fill(struct qxl_draw_fill *qxl_draw_fill_rec)
···
 	struct qxl_release *release;
 	int ret;
 
-	ret = make_drawable(qdev, 0, QXL_DRAW_FILL, &rect, &release);
+	ret = alloc_drawable(qdev, &release);
 	if (ret)
 		return;
+
+	/* do a reservation run over all the objects we just allocated */
+	ret = qxl_release_reserve_list(release, true);
+	if (ret)
+		goto out_free_release;
+
+	ret = make_drawable(qdev, 0, QXL_DRAW_FILL, &rect, release);
+	if (ret) {
+		qxl_release_backoff_reserve_list(release);
+		goto out_free_release;
+	}
 
 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 	drawable->u.fill.brush.type = SPICE_BRUSH_TYPE_SOLID;
···
 	drawable->u.fill.mask.bitmap = 0;
 
 	qxl_release_unmap(qdev, release, &drawable->release_info);
-	qxl_fence_releaseable(qdev, release);
+
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
-	qxl_release_unreserve(qdev, release);
+	qxl_release_fence_buffer_objects(release);
+
+out_free_release:
+	if (ret)
+		free_drawable(qdev, release);
 }

drivers/gpu/drm/qxl/qxl_drv.h

···
 #include <ttm/ttm_placement.h>
 #include <ttm/ttm_module.h>
 
+/* just for ttm_validate_buffer */
+#include <ttm/ttm_execbuf_util.h>
+
 #include <drm/qxl_drm.h>
 #include "qxl_dev.h"
 
···
 	uint32_t surface_id;
 	struct qxl_fence fence; /* per bo fence  - list of releases */
 	struct qxl_release *surf_create;
-	atomic_t reserve_count;
 };
 #define gem_to_qxl_bo(gobj) container_of((gobj), struct qxl_bo, gem_base)
+#define to_qxl_bo(tobj) container_of((tobj), struct qxl_bo, tbo)
 
 struct qxl_gem {
 	struct mutex		mutex;
···
 };
 
 struct qxl_bo_list {
-	struct list_head lhead;
-	struct qxl_bo *bo;
-};
-
-struct qxl_reloc_list {
-	struct list_head bos;
+	struct ttm_validate_buffer tv;
 };
 
 struct qxl_crtc {
···
 struct qxl_release {
 	int id;
 	int type;
-	int bo_count;
 	uint32_t release_offset;
 	uint32_t surface_release_id;
-	struct qxl_bo *bos[QXL_MAX_RES];
+	struct ww_acquire_ctx ticket;
+	struct list_head bos;
+};
+
+struct qxl_drm_chunk {
+	struct list_head head;
+	struct qxl_bo *bo;
+};
+
+struct qxl_drm_image {
+	struct qxl_bo *bo;
+	struct list_head chunk_list;
 };
 
 struct qxl_fb_image {
···
 	struct workqueue_struct *gc_queue;
 	struct work_struct gc_work;
 
+	struct work_struct fb_work;
 };
 
 /* forward declaration for QXL_INFO_IO */
···
 
 /* qxl image */
 
-int qxl_image_create(struct qxl_device *qdev,
-		     struct qxl_release *release,
-		     struct qxl_bo **image_bo,
-		     const uint8_t *data,
-		     int x, int y, int width, int height,
-		     int depth, int stride);
+int qxl_image_init(struct qxl_device *qdev,
+		   struct qxl_release *release,
+		   struct qxl_drm_image *dimage,
+		   const uint8_t *data,
+		   int x, int y, int width, int height,
+		   int depth, int stride);
+int
+qxl_image_alloc_objects(struct qxl_device *qdev,
+			struct qxl_release *release,
+			struct qxl_drm_image **image_ptr,
+			int height, int stride);
+void qxl_image_free_objects(struct qxl_device *qdev, struct qxl_drm_image *dimage);
+
 void qxl_update_screen(struct qxl_device *qxl);
 
 /* qxl io operations (qxl_cmd.c) */
···
 void qxl_io_flush_release(struct qxl_device *qdev);
 void qxl_io_flush_surfaces(struct qxl_device *qdev);
 
-int qxl_release_reserve(struct qxl_device *qdev,
-			struct qxl_release *release, bool no_wait);
-void qxl_release_unreserve(struct qxl_device *qdev,
-			   struct qxl_release *release);
 union qxl_release_info *qxl_release_map(struct qxl_device *qdev,
 					struct qxl_release *release);
 void qxl_release_unmap(struct qxl_device *qdev,
 		       struct qxl_release *release,
 		       union qxl_release_info *info);
-/*
- * qxl_bo_add_resource.
- *
- */
-void qxl_bo_add_resource(struct qxl_bo *main_bo, struct qxl_bo *resource);
+int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo);
+int qxl_release_reserve_list(struct qxl_release *release, bool no_intr);
+void qxl_release_backoff_reserve_list(struct qxl_release *release);
+void qxl_release_fence_buffer_objects(struct qxl_release *release);
 
 int qxl_alloc_surface_release_reserved(struct qxl_device *qdev,
 				       enum qxl_surface_cmd_type surface_cmd_type,
···
 int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
 			       int type, struct qxl_release **release,
 			       struct qxl_bo **rbo);
-int qxl_fence_releaseable(struct qxl_device *qdev,
-			  struct qxl_release *release);
+
 int
 qxl_push_command_ring_release(struct qxl_device *qdev, struct qxl_release *release,
 			      uint32_t type, bool interruptible);
 int
 qxl_push_cursor_ring_release(struct qxl_device *qdev, struct qxl_release *release,
 			     uint32_t type, bool interruptible);
-int qxl_alloc_bo_reserved(struct qxl_device *qdev, unsigned long size,
+int qxl_alloc_bo_reserved(struct qxl_device *qdev,
+			  struct qxl_release *release,
+			  unsigned long size,
 			  struct qxl_bo **_bo);
 /* qxl drawing commands */
 
···
 		       u32 sx, u32 sy,
 		       u32 dx, u32 dy);
 
-uint64_t
-qxl_release_alloc(struct qxl_device *qdev, int type,
-		  struct qxl_release **ret);
-
 void qxl_release_free(struct qxl_device *qdev,
 		      struct qxl_release *release);
-void qxl_release_add_res(struct qxl_device *qdev,
-			 struct qxl_release *release,
-			 struct qxl_bo *bo);
+
 /* used by qxl_debugfs_release */
 struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev,
 						   uint64_t id);
···
 int qxl_update_surface(struct qxl_device *qdev, struct qxl_bo *surf);
 
 /* qxl_fence.c */
-int qxl_fence_add_release(struct qxl_fence *qfence, uint32_t rel_id);
+void qxl_fence_add_release_locked(struct qxl_fence *qfence, uint32_t rel_id);
 int qxl_fence_remove_release(struct qxl_fence *qfence, uint32_t rel_id);
 int qxl_fence_init(struct qxl_device *qdev, struct qxl_fence *qfence);
 void qxl_fence_fini(struct qxl_fence *qfence);

drivers/gpu/drm/qxl/qxl_fb.c

···
 
 #define QXL_DIRTY_DELAY (HZ / 30)
 
+#define QXL_FB_OP_FILLRECT 1
+#define QXL_FB_OP_COPYAREA 2
+#define QXL_FB_OP_IMAGEBLIT 3
+
+struct qxl_fb_op {
+	struct list_head head;
+	int op_type;
+	union {
+		struct fb_fillrect fr;
+		struct fb_copyarea ca;
+		struct fb_image ib;
+	} op;
+	void *img_data;
+};
+
 struct qxl_fbdev {
 	struct drm_fb_helper helper;
 	struct qxl_framebuffer	qfb;
 	struct list_head	fbdev_list;
 	struct qxl_device	*qdev;
 
+	spinlock_t delayed_ops_lock;
+	struct list_head delayed_ops;
 	void *shadow;
 	int size;
 
···
 	.deferred_io	= qxl_deferred_io,
 };
 
-static void qxl_fb_fillrect(struct fb_info *info,
-			    const struct fb_fillrect *fb_rect)
+static void qxl_fb_delayed_fillrect(struct qxl_fbdev *qfbdev,
+				    const struct fb_fillrect *fb_rect)
+{
+	struct qxl_fb_op *op;
+	unsigned long flags;
+
+	op = kmalloc(sizeof(struct qxl_fb_op), GFP_ATOMIC | __GFP_NOWARN);
+	if (!op)
+		return;
+
+	op->op.fr = *fb_rect;
+	op->img_data = NULL;
+	op->op_type = QXL_FB_OP_FILLRECT;
+
+	spin_lock_irqsave(&qfbdev->delayed_ops_lock, flags);
+	list_add_tail(&op->head, &qfbdev->delayed_ops);
+	spin_unlock_irqrestore(&qfbdev->delayed_ops_lock, flags);
+}
+
+static void qxl_fb_delayed_copyarea(struct qxl_fbdev *qfbdev,
+				    const struct fb_copyarea *fb_copy)
+{
+	struct qxl_fb_op *op;
+	unsigned long flags;
+
+	op = kmalloc(sizeof(struct qxl_fb_op), GFP_ATOMIC | __GFP_NOWARN);
+	if (!op)
+		return;
+
+	op->op.ca = *fb_copy;
+	op->img_data = NULL;
+	op->op_type = QXL_FB_OP_COPYAREA;
+
+	spin_lock_irqsave(&qfbdev->delayed_ops_lock, flags);
+	list_add_tail(&op->head, &qfbdev->delayed_ops);
+	spin_unlock_irqrestore(&qfbdev->delayed_ops_lock, flags);
+}
+
+static void qxl_fb_delayed_imageblit(struct qxl_fbdev *qfbdev,
+				     const struct fb_image *fb_image)
+{
+	struct qxl_fb_op *op;
+	unsigned long flags;
+	uint32_t size = fb_image->width * fb_image->height * (fb_image->depth >= 8 ? fb_image->depth / 8 : 1);
+
+	op = kmalloc(sizeof(struct qxl_fb_op) + size, GFP_ATOMIC | __GFP_NOWARN);
+	if (!op)
+		return;
+
+	op->op.ib = *fb_image;
+	op->img_data = (void *)(op + 1);
+	op->op_type = QXL_FB_OP_IMAGEBLIT;
+
+	memcpy(op->img_data, fb_image->data, size);
+
+	op->op.ib.data = op->img_data;
+	spin_lock_irqsave(&qfbdev->delayed_ops_lock, flags);
+	list_add_tail(&op->head, &qfbdev->delayed_ops);
+	spin_unlock_irqrestore(&qfbdev->delayed_ops_lock, flags);
+}
+
+static void qxl_fb_fillrect_internal(struct fb_info *info,
+				     const struct fb_fillrect *fb_rect)
 {
 	struct qxl_fbdev *qfbdev = info->par;
 	struct qxl_device *qdev = qfbdev->qdev;
···
 	qxl_draw_fill_rec.rect = rect;
 	qxl_draw_fill_rec.color = color;
 	qxl_draw_fill_rec.rop = rop;
-	if (!drm_can_sleep()) {
-		qxl_io_log(qdev,
-			"%s: TODO use RCU, mysterious locks with spin_lock\n",
-			__func__);
-		return;
-	}
+
 	qxl_draw_fill(&qxl_draw_fill_rec);
 }
 
-static void qxl_fb_copyarea(struct fb_info *info,
-			    const struct fb_copyarea *region)
+static void qxl_fb_fillrect(struct fb_info *info,
+			    const struct fb_fillrect *fb_rect)
+{
+	struct qxl_fbdev *qfbdev = info->par;
+	struct qxl_device *qdev = qfbdev->qdev;
+
+	if (!drm_can_sleep()) {
+		qxl_fb_delayed_fillrect(qfbdev, fb_rect);
+		schedule_work(&qdev->fb_work);
+		return;
+	}
+	/* make sure any previous work is done */
+	flush_work(&qdev->fb_work);
+	qxl_fb_fillrect_internal(info, fb_rect);
+}
+
+static void qxl_fb_copyarea_internal(struct fb_info *info,
+				     const struct fb_copyarea *region)
 {
 	struct qxl_fbdev *qfbdev = info->par;
 
···
 			  region->dx, region->dy);
 }
 
+static void qxl_fb_copyarea(struct fb_info *info,
+			    const struct fb_copyarea *region)
+{
+	struct qxl_fbdev *qfbdev = info->par;
+	struct qxl_device *qdev = qfbdev->qdev;
+
+	if (!drm_can_sleep()) {
+		qxl_fb_delayed_copyarea(qfbdev, region);
+		schedule_work(&qdev->fb_work);
+		return;
+	}
+	/* make sure any previous work is done */
+	flush_work(&qdev->fb_work);
+	qxl_fb_copyarea_internal(info, region);
+}
+
 static void qxl_fb_imageblit_safe(struct qxl_fb_image *qxl_fb_image)
 {
 	qxl_draw_opaque_fb(qxl_fb_image, 0);
+}
+
+static void qxl_fb_imageblit_internal(struct fb_info *info,
+				      const struct fb_image *image)
+{
+	struct qxl_fbdev *qfbdev = info->par;
+	struct qxl_fb_image qxl_fb_image;
+
+	/* ensure proper order  rendering operations - TODO: must do this
+	 * for everything. */
+	qxl_fb_image_init(&qxl_fb_image, qfbdev->qdev, info, image);
+	qxl_fb_imageblit_safe(&qxl_fb_image);
 }
 
 static void qxl_fb_imageblit(struct fb_info *info,
···
 {
 	struct qxl_fbdev *qfbdev = info->par;
 	struct qxl_device *qdev = qfbdev->qdev;
-	struct qxl_fb_image qxl_fb_image;
 
 	if (!drm_can_sleep()) {
-		/* we cannot do any ttm_bo allocation since that will fail on
-		 * ioremap_wc..__get_vm_area_node, so queue the work item
-		 * instead This can happen from printk inside an interrupt
-		 * context, i.e.: smp_apic_timer_interrupt..check_cpu_stall */
-		qxl_io_log(qdev,
-			"%s: TODO use RCU, mysterious locks with spin_lock\n",
-			   __func__);
+		qxl_fb_delayed_imageblit(qfbdev, image);
+		schedule_work(&qdev->fb_work);
 		return;
 	}
+	/* make sure any previous work is done */
+	flush_work(&qdev->fb_work);
+	qxl_fb_imageblit_internal(info, image);
+}
 
-	/* ensure proper order of rendering operations - TODO: must do this
-	 * for everything. */
-	qxl_fb_image_init(&qxl_fb_image, qfbdev->qdev, info, image);
-	qxl_fb_imageblit_safe(&qxl_fb_image);
+static void qxl_fb_work(struct work_struct *work)
+{
+	struct qxl_device *qdev = container_of(work, struct qxl_device, fb_work);
+	unsigned long flags;
+	struct qxl_fb_op *entry, *tmp;
+	struct qxl_fbdev *qfbdev = qdev->mode_info.qfbdev;
+
+	/* since the irq context just adds entries to the end of the
+	   list dropping the lock should be fine, as entry isn't modified
+	   in the operation code */
+	spin_lock_irqsave(&qfbdev->delayed_ops_lock, flags);
+	list_for_each_entry_safe(entry, tmp, &qfbdev->delayed_ops, head) {
+		spin_unlock_irqrestore(&qfbdev->delayed_ops_lock, flags);
+		switch (entry->op_type) {
+		case QXL_FB_OP_FILLRECT:
+			qxl_fb_fillrect_internal(qfbdev->helper.fbdev, &entry->op.fr);
+			break;
+		case QXL_FB_OP_COPYAREA:
+			qxl_fb_copyarea_internal(qfbdev->helper.fbdev, &entry->op.ca);
+			break;
+		case QXL_FB_OP_IMAGEBLIT:
+			qxl_fb_imageblit_internal(qfbdev->helper.fbdev, &entry->op.ib);
+			break;
+		}
+		spin_lock_irqsave(&qfbdev->delayed_ops_lock, flags);
+		list_del(&entry->head);
+		kfree(entry);
+	}
+	spin_unlock_irqrestore(&qfbdev->delayed_ops_lock, flags);
 }
 
 int qxl_fb_init(struct qxl_device *qdev)
 {
+	INIT_WORK(&qdev->fb_work, qxl_fb_work);
 	return 0;
 }
 
···
 	qfbdev->qdev = qdev;
 	qdev->mode_info.qfbdev = qfbdev;
 	qfbdev->helper.funcs = &qxl_fb_helper_funcs;
-
+	spin_lock_init(&qfbdev->delayed_ops_lock);
+	INIT_LIST_HEAD(&qfbdev->delayed_ops);
 	ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper,
 				 qxl_num_crtc /* num_crtc - QXL supports just 1 */,
 				 QXLFB_CONN_LIMIT);

drivers/gpu/drm/qxl/qxl_fence.c

···
 
    For some reason every so often qxl hw fails to release, things go wrong.
 */
-
-
-int qxl_fence_add_release(struct qxl_fence *qfence, uint32_t rel_id)
+/* must be called with the fence lock held */
+void qxl_fence_add_release_locked(struct qxl_fence *qfence, uint32_t rel_id)
 {
-	struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence);
-
-	spin_lock(&bo->tbo.bdev->fence_lock);
 	radix_tree_insert(&qfence->tree, rel_id, qfence);
 	qfence->num_active_releases++;
-	spin_unlock(&bo->tbo.bdev->fence_lock);
-	return 0;
 }
 
 int qxl_fence_remove_release(struct qxl_fence *qfence, uint32_t rel_id)

drivers/gpu/drm/qxl/qxl_gem.c

···
 	/* At least align on page size */
 	if (alignment < PAGE_SIZE)
 		alignment = PAGE_SIZE;
-	r = qxl_bo_create(qdev, size, kernel, initial_domain, surf, &qbo);
+	r = qxl_bo_create(qdev, size, kernel, false, initial_domain, surf, &qbo);
 	if (r) {
 		if (r != -ERESTARTSYS)
 			DRM_ERROR(

drivers/gpu/drm/qxl/qxl_image.c

···
 #include "qxl_object.h"
 
 static int
-qxl_image_create_helper(struct qxl_device *qdev,
-			struct qxl_release *release,
-			struct qxl_bo **image_bo,
-			const uint8_t *data,
-			int width, int height,
-			int depth, unsigned int hash,
-			int stride)
+qxl_allocate_chunk(struct qxl_device *qdev,
+		   struct qxl_release *release,
+		   struct qxl_drm_image *image,
+		   unsigned int chunk_size)
 {
+	struct qxl_drm_chunk *chunk;
+	int ret;
+
+	chunk = kmalloc(sizeof(struct qxl_drm_chunk), GFP_KERNEL);
+	if (!chunk)
+		return -ENOMEM;
+
+	ret = qxl_alloc_bo_reserved(qdev, release, chunk_size, &chunk->bo);
+	if (ret) {
+		kfree(chunk);
+		return ret;
+	}
+
+	list_add_tail(&chunk->head, &image->chunk_list);
+	return 0;
+}
+
+int
+qxl_image_alloc_objects(struct qxl_device *qdev,
+			struct qxl_release *release,
+			struct qxl_drm_image **image_ptr,
+			int height, int stride)
+{
+	struct qxl_drm_image *image;
+	int ret;
+
+	image = kmalloc(sizeof(struct qxl_drm_image), GFP_KERNEL);
+	if (!image)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&image->chunk_list);
+
+	ret = qxl_alloc_bo_reserved(qdev, release, sizeof(struct qxl_image), &image->bo);
+	if (ret) {
+		kfree(image);
+		return ret;
+	}
+
+	ret = qxl_allocate_chunk(qdev, release, image, sizeof(struct qxl_data_chunk) + stride * height);
+	if (ret) {
+		qxl_bo_unref(&image->bo);
+		kfree(image);
+		return ret;
+	}
+	*image_ptr = image;
+	return 0;
+}
+
+void qxl_image_free_objects(struct qxl_device *qdev, struct qxl_drm_image *dimage)
+{
+	struct qxl_drm_chunk *chunk, *tmp;
+
+	list_for_each_entry_safe(chunk, tmp, &dimage->chunk_list, head) {
+		qxl_bo_unref(&chunk->bo);
+		kfree(chunk);
+	}
+
+	qxl_bo_unref(&dimage->bo);
+	kfree(dimage);
+}
+
+static int
+qxl_image_init_helper(struct qxl_device *qdev,
+		      struct qxl_release *release,
+		      struct qxl_drm_image *dimage,
+		      const uint8_t *data,
+		      int width, int height,
+		      int depth, unsigned int hash,
+		      int stride)
+{
+	struct qxl_drm_chunk *drv_chunk;
 	struct qxl_image *image;
 	struct qxl_data_chunk *chunk;
 	int i;
 	int chunk_stride;
 	int linesize = width * depth / 8;
-	struct qxl_bo *chunk_bo;
-	int ret;
+	struct qxl_bo *chunk_bo, *image_bo;
 	void *ptr;
 	/* Chunk */
 	/* FIXME: Check integer overflow */
 	/* TODO: variable number of chunks */
+
+	drv_chunk = list_first_entry(&dimage->chunk_list, struct qxl_drm_chunk, head);
+
+	chunk_bo = drv_chunk->bo;
 	chunk_stride = stride; /* TODO: should use linesize, but it renders
 				  wrong (check the bitmaps are sent correctly
 				  first) */
-	ret = qxl_alloc_bo_reserved(qdev, sizeof(*chunk) + height * chunk_stride,
-				    &chunk_bo);
-	
+
 	ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0);
 	chunk = ptr;
 	chunk->data_size = height * chunk_stride;
···
 				while (remain > 0) {
 					page_base = out_offset & PAGE_MASK;
 					page_offset = offset_in_page(out_offset);
-					
 					size = min((int)(PAGE_SIZE - page_offset), remain);
 
 					ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base);
···
 			}
 		}
 	}
-
-
 	qxl_bo_kunmap(chunk_bo);
 
-	/* Image */
-	ret = qxl_alloc_bo_reserved(qdev, sizeof(*image), image_bo);
-
-	ptr = qxl_bo_kmap_atomic_page(qdev, *image_bo, 0);
+	image_bo = dimage->bo;
+	ptr = qxl_bo_kmap_atomic_page(qdev, image_bo, 0);
 	image = ptr;
 
 	image->descriptor.id = 0;
···
 	image->u.bitmap.stride = chunk_stride;
 	image->u.bitmap.palette = 0;
 	image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0);
-	qxl_release_add_res(qdev, release, chunk_bo);
-	qxl_bo_unreserve(chunk_bo);
-	qxl_bo_unref(&chunk_bo);
 
-	qxl_bo_kunmap_atomic_page(qdev, *image_bo, ptr);
+	qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr);
 
 	return 0;
 }
 
-int qxl_image_create(struct qxl_device *qdev,
+int qxl_image_init(struct qxl_device *qdev,
 		     struct qxl_release *release,
-		     struct qxl_bo **image_bo,
+		     struct qxl_drm_image *dimage,
 		     const uint8_t *data,
 		     int x, int y, int width, int height,
 		     int depth, int stride)
 {
 	data += y * stride + x * (depth / 8);
-	return qxl_image_create_helper(qdev, release, image_bo, data,
+	return qxl_image_init_helper(qdev, release, dimage, data,
 				       width, height, depth, 0, stride);
 }

drivers/gpu/drm/qxl/qxl_ioctl.c

···
 				  &qxl_map->offset);
 }
 
+struct qxl_reloc_info {
+	int type;
+	struct qxl_bo *dst_bo;
+	uint32_t dst_offset;
+	struct qxl_bo *src_bo;
+	int src_offset;
+};
+
 /*
  * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's
  * are on vram).
  * *(dst + dst_off) = qxl_bo_physical_address(src, src_off)
  */
 static void
-apply_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off,
-	    struct qxl_bo *src, uint64_t src_off)
+apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
 {
 	void *reloc_page;
-
-	reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK);
-	*(uint64_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
-								     src, src_off);
-	qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page);
+	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
+	*(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
+											      info->src_bo,
+											      info->src_offset);
+	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
 }
 
 static void
-apply_surf_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off,
-		 struct qxl_bo *src)
+apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
 {
 	uint32_t id = 0;
 	void *reloc_page;
 
-	if (src && !src->is_primary)
-		id = src->surface_id;
+	if (info->src_bo && !info->src_bo->is_primary)
+		id = info->src_bo->surface_id;
 
-	reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK);
-	*(uint32_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = id;
-	qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page);
+	reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
+	*(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
+	qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
 }
 
 /* return holding the reference to this object */
 static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
 					 struct drm_file *file_priv, uint64_t handle,
-					 struct qxl_reloc_list *reloc_list)
+					 struct qxl_release *release)
 {
 	struct drm_gem_object *gobj;
 	struct qxl_bo *qobj;
 	int ret;
 
 	gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle);
-	if (!gobj) {
-		DRM_ERROR("bad bo handle %lld\n", handle);
+	if (!gobj)
 		return NULL;
-	}
+
 	qobj = gem_to_qxl_bo(gobj);
 
-	ret = qxl_bo_list_add(reloc_list, qobj);
+	ret = qxl_release_list_add(release, qobj);
 	if (ret)
 		return NULL;
 
···
  * However, the command as passed from user space must *not* contain the initial
  * QXLReleaseInfo struct (first XXX bytes)
  */
+static int qxl_process_single_command(struct qxl_device *qdev,
+				      struct drm_qxl_command *cmd,
+				      struct drm_file *file_priv)
+{
+	struct qxl_reloc_info *reloc_info;
+	int release_type;
+	struct qxl_release *release;
+	struct qxl_bo *cmd_bo;
+	void *fb_cmd;
+	int i, j, ret, num_relocs;
+	int unwritten;
+
+	switch (cmd->type) {
+	case QXL_CMD_DRAW:
+		release_type = QXL_RELEASE_DRAWABLE;
+		break;
+	case QXL_CMD_SURFACE:
+	case QXL_CMD_CURSOR:
+	default:
+		DRM_DEBUG("Only draw commands in execbuffers\n");
+		return -EINVAL;
+		break;
+	}
+
+	if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))
+		return -EINVAL;
+
+	if (!access_ok(VERIFY_READ,
+		       (void *)(unsigned long)cmd->command,
+		       cmd->command_size))
+		return -EFAULT;
+
+	reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL);
+	if (!reloc_info)
+		return -ENOMEM;
+
+	ret = qxl_alloc_release_reserved(qdev,
+					 sizeof(union qxl_release_info) +
+					 cmd->command_size,
+					 release_type,
+					 &release,
+					 &cmd_bo);
+	if (ret)
+		goto out_free_reloc;
+
+	/* TODO copy slow path code from i915 */
+	fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
+	unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size);
+
+	{
+		struct qxl_drawable *draw = fb_cmd;
+		draw->mm_time = qdev->rom->mm_clock;
+	}
+
+	qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
+	if (unwritten) {
+		DRM_ERROR("got unwritten %d\n", unwritten);
+		ret = -EFAULT;
+		goto out_free_release;
+	}
+
+	/* fill out reloc info structs */
+	num_relocs = 0;
+	for (i = 0; i < cmd->relocs_num; ++i) {
+		struct drm_qxl_reloc reloc;
+
+		if (DRM_COPY_FROM_USER(&reloc,
+				       &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
+				       sizeof(reloc))) {
+			ret = -EFAULT;
+			goto out_free_bos;
+		}
+
+		/* add the bos to the list of bos to validate -
+		   need to validate first then process relocs? */
+		if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {
+			DRM_DEBUG("unknown reloc type %d\n", reloc_info[i].type);
+
+			ret = -EINVAL;
+			goto out_free_bos;
+		}
+		reloc_info[i].type = reloc.reloc_type;
+
+		if (reloc.dst_handle) {
+			reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
+								  reloc.dst_handle, release);
+			if (!reloc_info[i].dst_bo) {
+				ret = -EINVAL;
+				reloc_info[i].src_bo = NULL;
+				goto out_free_bos;
+			}
+			reloc_info[i].dst_offset = reloc.dst_offset;
+		} else {
+			reloc_info[i].dst_bo = cmd_bo;
+			reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
+		}
+		num_relocs++;
+
+		/* reserve and validate the reloc dst bo */
+		if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) {
+			reloc_info[i].src_bo =
+				qxlhw_handle_to_bo(qdev, file_priv,
+						   reloc.src_handle, release);
+			if (!reloc_info[i].src_bo) {
+				if (reloc_info[i].dst_bo != cmd_bo)
+					drm_gem_object_unreference_unlocked(&reloc_info[i].dst_bo->gem_base);
+				ret = -EINVAL;
+				goto out_free_bos;
+			}
+			reloc_info[i].src_offset = reloc.src_offset;
+		} else {
+			reloc_info[i].src_bo = NULL;
+			reloc_info[i].src_offset = 0;
+		}
+	}
+
+	/* validate all buffers */
+	ret = qxl_release_reserve_list(release, false);
+	if (ret)
+		goto out_free_bos;
+
+	for (i = 0; i < cmd->relocs_num; ++i) {
+		if (reloc_info[i].type == QXL_RELOC_TYPE_BO)
+			apply_reloc(qdev, &reloc_info[i]);
+		else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)
+			apply_surf_reloc(qdev, &reloc_info[i]);
+	}
+
+	ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
+	if (ret)
+		qxl_release_backoff_reserve_list(release);
+	else
+		qxl_release_fence_buffer_objects(release);
+
+out_free_bos:
+	for (j = 0; j < num_relocs; j++) {
+		if (reloc_info[j].dst_bo != cmd_bo)
+			drm_gem_object_unreference_unlocked(&reloc_info[j].dst_bo->gem_base);
+		if (reloc_info[j].src_bo && reloc_info[j].src_bo != cmd_bo)
+			drm_gem_object_unreference_unlocked(&reloc_info[j].src_bo->gem_base);
+	}
+out_free_release:
+	if (ret)
+		qxl_release_free(qdev, release);
+out_free_reloc:
+	kfree(reloc_info);
+	return ret;
+}
+
 static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file_priv)
 {
···
 	struct drm_qxl_execbuffer *execbuffer = data;
 	struct drm_qxl_command user_cmd;
 	int cmd_num;
-	struct qxl_bo *reloc_src_bo;
-	struct qxl_bo *reloc_dst_bo;
-	struct drm_qxl_reloc reloc;
-	void *fb_cmd;
-	int i, ret;
-	struct qxl_reloc_list reloc_list;
-	int unwritten;
-	uint32_t reloc_dst_offset;
-	INIT_LIST_HEAD(&reloc_list.bos);
+	int ret;
 
 	for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
-		struct qxl_release *release;
-		struct qxl_bo *cmd_bo;
-		int release_type;
+
 		struct drm_qxl_command *commands =
 			(struct drm_qxl_command *)(uintptr_t)execbuffer->commands;
 
 		if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num],
 				       sizeof(user_cmd)))
 			return -EFAULT;
-		switch (user_cmd.type) {
-		case QXL_CMD_DRAW:
-			release_type = QXL_RELEASE_DRAWABLE;
-			break;
-		case QXL_CMD_SURFACE:
-		case QXL_CMD_CURSOR:
-		default:
-			DRM_DEBUG("Only draw commands in execbuffers\n");
-			return -EINVAL;
-			break;
-		}
 
-		if (user_cmd.command_size > PAGE_SIZE - sizeof(union qxl_release_info))
-			return -EINVAL;
-
-		if (!access_ok(VERIFY_READ,
-			       (void *)(unsigned long)user_cmd.command,
-			       user_cmd.command_size))
-			return -EFAULT;
-
-		ret = qxl_alloc_release_reserved(qdev,
-						 sizeof(union qxl_release_info) +
-						 user_cmd.command_size,
-						 release_type,
-						 &release,
-						 &cmd_bo);
+		ret = qxl_process_single_command(qdev, &user_cmd, file_priv);
 		if (ret)
 			return ret;
-
-		/* TODO copy slow path code from i915 */
-		fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
-		unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)user_cmd.command, user_cmd.command_size);
-
-		{
-			struct qxl_drawable *draw = fb_cmd;
-
-			draw->mm_time = qdev->rom->mm_clock;
-		}
-		qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
-		if (unwritten) {
-			DRM_ERROR("got unwritten %d\n", unwritten);
-			qxl_release_unreserve(qdev, release);
-			qxl_release_free(qdev, release);
-			return -EFAULT;
-		}
-
-		for (i = 0 ; i < user_cmd.relocs_num; ++i) {
-			if (DRM_COPY_FROM_USER(&reloc,
-					       &((struct drm_qxl_reloc *)(uintptr_t)user_cmd.relocs)[i],
-					       sizeof(reloc))) {
-				qxl_bo_list_unreserve(&reloc_list, true);
-				qxl_release_unreserve(qdev, release);
-				qxl_release_free(qdev, release);
-				return -EFAULT;
-			}
-
-			/* add the bos to the list of bos to validate -
-			   need to validate first then process relocs? */
-			if (reloc.dst_handle) {
-				reloc_dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
-								  reloc.dst_handle, &reloc_list);
-				if (!reloc_dst_bo) {
-					qxl_bo_list_unreserve(&reloc_list, true);
-					qxl_release_unreserve(qdev, release);
-					qxl_release_free(qdev, release);
-					return -EINVAL;
-				}
-				reloc_dst_offset = 0;
-			} else {
-				reloc_dst_bo = cmd_bo;
-				reloc_dst_offset = release->release_offset;
-			}
-
-			/* reserve and validate the reloc dst bo */
-			if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) {
-				reloc_src_bo =
-					qxlhw_handle_to_bo(qdev, file_priv,
-							   reloc.src_handle, &reloc_list);
-				if (!reloc_src_bo) {
-					if (reloc_dst_bo != cmd_bo)
-						drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base);
-					qxl_bo_list_unreserve(&reloc_list, true);
-					qxl_release_unreserve(qdev, release);
-					qxl_release_free(qdev, release);
-					return -EINVAL;
-				}
-			} else
-				reloc_src_bo = NULL;
-			if (reloc.reloc_type == QXL_RELOC_TYPE_BO) {
-				apply_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset,
-					    reloc_src_bo, reloc.src_offset);
-			} else if (reloc.reloc_type == QXL_RELOC_TYPE_SURF) {
-				apply_surf_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset, reloc_src_bo);
-			} else {
-				DRM_ERROR("unknown reloc type %d\n", reloc.reloc_type);
-				return -EINVAL;
-			}
-
-			if (reloc_src_bo && reloc_src_bo != cmd_bo) {
-				qxl_release_add_res(qdev, release, reloc_src_bo);
-				drm_gem_object_unreference_unlocked(&reloc_src_bo->gem_base);
-			}
-
-			if (reloc_dst_bo != cmd_bo)
-				drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base);
-		}
-		qxl_fence_releaseable(qdev, release);
-
-		ret = qxl_push_command_ring_release(qdev, release, user_cmd.type, true);
-		if (ret == -ERESTARTSYS) {
-			qxl_release_unreserve(qdev, release);
-			qxl_release_free(qdev, release);
-			qxl_bo_list_unreserve(&reloc_list, true);
-			return ret;
-		}
-		qxl_release_unreserve(qdev, release);
 	}
-	qxl_bo_list_unreserve(&reloc_list, 0);
 	return 0;
 }
 
···
 		goto out;
 
 	if (!qobj->pin_count) {
-		qxl_ttm_placement_from_domain(qobj, qobj->type);
+		qxl_ttm_placement_from_domain(qobj, qobj->type, false);
 		ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
 				      true, false);
 		if (unlikely(ret))

drivers/gpu/drm/qxl/qxl_object.c

···
 	return false;
 }
 
-void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain)
+void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
 {
 	u32 c = 0;
+	u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0;
 
 	qbo->placement.fpfn = 0;
 	qbo->placement.lpfn = 0;
 	qbo->placement.placement = qbo->placements;
 	qbo->placement.busy_placement = qbo->placements;
 	if (domain == QXL_GEM_DOMAIN_VRAM)
-		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM;
+		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
 	if (domain == QXL_GEM_DOMAIN_SURFACE)
-		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0;
+		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0 | pflag;
 	if (domain == QXL_GEM_DOMAIN_CPU)
-		qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+		qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag;
 	if (!c)
 		qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 	qbo->placement.num_placement = c;
···
 
 
 int qxl_bo_create(struct qxl_device *qdev,
-		  unsigned long size, bool kernel, u32 domain,
+		  unsigned long size, bool kernel, bool pinned, u32 domain,
 		  struct qxl_surface *surf,
 		  struct qxl_bo **bo_ptr)
 {
···
 	}
 	bo->gem_base.driver_private = NULL;
 	bo->type = domain;
-	bo->pin_count = 0;
+	bo->pin_count = pinned ? 1 : 0;
 	bo->surface_id = 0;
 	qxl_fence_init(qdev, &bo->fence);
 	INIT_LIST_HEAD(&bo->list);
-	atomic_set(&bo->reserve_count, 0);
+
 	if (surf)
 		bo->surf = *surf;
 
-	qxl_ttm_placement_from_domain(bo, domain);
+	qxl_ttm_placement_from_domain(bo, domain, pinned);
 
 	r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
 			&bo->placement, 0, !kernel, NULL, size,
···
 int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr)
 {
 	struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
-	int r, i;
+	int r;
 
 	if (bo->pin_count) {
 		bo->pin_count++;
···
 			*gpu_addr = qxl_bo_gpu_offset(bo);
 		return 0;
 	}
-	qxl_ttm_placement_from_domain(bo, domain);
-	for (i = 0; i < bo->placement.num_placement; i++)
-		bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
+	qxl_ttm_placement_from_domain(bo, domain, true);
 	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 	if (likely(r == 0)) {
 		bo->pin_count = 1;
···
 		if (ret)
 			return ret;
 	}
-	return 0;
-}
-
-void qxl_bo_list_unreserve(struct qxl_reloc_list *reloc_list, bool failed)
-{
-	struct qxl_bo_list *entry, *sf;
-
-	list_for_each_entry_safe(entry, sf, &reloc_list->bos, lhead) {
-		qxl_bo_unreserve(entry->bo);
-		list_del(&entry->lhead);
-		kfree(entry);
-	}
-}
-
-int qxl_bo_list_add(struct qxl_reloc_list *reloc_list, struct qxl_bo *bo)
-{
-	struct qxl_bo_list *entry;
-	int ret;
-
-	list_for_each_entry(entry, &reloc_list->bos, lhead) {
-		if (entry->bo == bo)
-			return 0;
-	}
-
-	entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL);
-	if (!entry)
-		return -ENOMEM;
-
-	entry->bo = bo;
-	list_add(&entry->lhead, &reloc_list->bos);
-
-	ret = qxl_bo_reserve(bo, false);
-	if (ret)
-		return ret;
-
-	if (!bo->pin_count) {
-		qxl_ttm_placement_from_domain(bo, bo->type);
-		ret = ttm_bo_validate(&bo->tbo, &bo->placement,
-				      true, false);
-		if (ret)
-			return ret;
-	}
-
-	/* allocate a surface for reserved + validated buffers */
-	ret = qxl_bo_check_id(bo->gem_base.dev->dev_private, bo);
-	if (ret)
-		return ret;
 	return 0;
 }
 

drivers/gpu/drm/qxl/qxl_object.h

···
 
 extern int qxl_bo_create(struct qxl_device *qdev,
 			 unsigned long size,
-			 bool kernel, u32 domain,
+			 bool kernel, bool pinned, u32 domain,
 			 struct qxl_surface *surf,
 			 struct qxl_bo **bo_ptr);
 extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
···
 extern void qxl_bo_unref(struct qxl_bo **bo);
 extern int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr);
 extern int qxl_bo_unpin(struct qxl_bo *bo);
-extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain);
+extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned);
 extern bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo);
 
-extern int qxl_bo_list_add(struct qxl_reloc_list *reloc_list, struct qxl_bo *bo);
-extern void qxl_bo_list_unreserve(struct qxl_reloc_list *reloc_list, bool failed);
 #endif

drivers/gpu/drm/qxl/qxl_release.c

···
 
 static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE };
 static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO };
-uint64_t
+
+static uint64_t
 qxl_release_alloc(struct qxl_device *qdev, int type,
 		  struct qxl_release **ret)
 {
···
 		return 0;
 	}
 	release->type = type;
-	release->bo_count = 0;
 	release->release_offset = 0;
 	release->surface_release_id = 0;
+	INIT_LIST_HEAD(&release->bos);
 
 	idr_preload(GFP_KERNEL);
 	spin_lock(&qdev->release_idr_lock);
···
 qxl_release_free(struct qxl_device *qdev,
 		 struct qxl_release *release)
 {
-	int i;
-
-	QXL_INFO(qdev, "release %d, type %d, %d bos\n", release->id,
-		 release->type, release->bo_count);
+	struct qxl_bo_list *entry, *tmp;
+	QXL_INFO(qdev, "release %d, type %d\n", release->id,
+		 release->type);
 
 	if (release->surface_release_id)
 		qxl_surface_id_dealloc(qdev, release->surface_release_id);
 
-	for (i = 0 ; i < release->bo_count; ++i) {
+	list_for_each_entry_safe(entry, tmp, &release->bos, tv.head) {
+		struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
 		QXL_INFO(qdev, "release %llx\n",
-			release->bos[i]->tbo.addr_space_offset
+			entry->tv.bo->addr_space_offset
 						- DRM_FILE_OFFSET);
-		qxl_fence_remove_release(&release->bos[i]->fence, release->id);
-		qxl_bo_unref(&release->bos[i]);
+		qxl_fence_remove_release(&bo->fence, release->id);
+		qxl_bo_unref(&bo);
 	}
 	spin_lock(&qdev->release_idr_lock);
 	idr_remove(&qdev->release_idr, release->id);
···
 	kfree(release);
 }
 
-void
-qxl_release_add_res(struct qxl_device *qdev, struct qxl_release *release,
-		    struct qxl_bo *bo)
-{
-	int i;
-	for (i = 0; i < release->bo_count; i++)
-		if (release->bos[i] == bo)
-			return;
-
-	if (release->bo_count >= QXL_MAX_RES) {
-		DRM_ERROR("exceeded max resource on a qxl_release item\n");
-		return;
-	}
-	release->bos[release->bo_count++] = qxl_bo_ref(bo);
-}
-
 static int qxl_release_bo_alloc(struct qxl_device *qdev,
 				struct qxl_bo **bo)
 {
 	int ret;
-	ret = qxl_bo_create(qdev, PAGE_SIZE, false, QXL_GEM_DOMAIN_VRAM, NULL,
+	/* pin releases bo's they are too messy to evict */
+	ret = qxl_bo_create(qdev, PAGE_SIZE, false, true,
+			    QXL_GEM_DOMAIN_VRAM, NULL,
 			    bo);
 	return ret;
 }
 
-int qxl_release_reserve(struct qxl_device *qdev,
-			struct qxl_release *release, bool no_wait)
+int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo)
+{
+	struct qxl_bo_list *entry;
+
+	list_for_each_entry(entry, &release->bos, tv.head) {
+		if (entry->tv.bo == &bo->tbo)
+			return 0;
+	}
+
+	entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+
+	qxl_bo_ref(bo);
+	entry->tv.bo = &bo->tbo;
+	list_add_tail(&entry->tv.head, &release->bos);
+	return 0;
+}
+
+static int qxl_release_validate_bo(struct qxl_bo *bo)
 {
 	int ret;
-	if (atomic_inc_return(&release->bos[0]->reserve_count) == 1) {
-		ret = qxl_bo_reserve(release->bos[0], no_wait);
+
+	if (!bo->pin_count) {
+		qxl_ttm_placement_from_domain(bo, bo->type, false);
+		ret = ttm_bo_validate(&bo->tbo, &bo->placement,
+				      true, false);
 		if (ret)
 			return ret;
+	}
+
+	/* allocate a surface for reserved + validated buffers */
+	ret = qxl_bo_check_id(bo->gem_base.dev->dev_private, bo);
+	if (ret)
+		return ret;
+	return 0;
+}
+
+int qxl_release_reserve_list(struct qxl_release *release, bool no_intr)
+{
+	int ret;
+	struct qxl_bo_list *entry;
+
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos))
+		return 0;
+
+	ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos);
+	if (ret)
+		return ret;
+
+	list_for_each_entry(entry, &release->bos, tv.head) {
+		struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
+
+		ret = qxl_release_validate_bo(bo);
+		if (ret) {
+			ttm_eu_backoff_reservation(&release->ticket, &release->bos);
+			return ret;
+		}
 	}
 	return 0;
 }
 
-void qxl_release_unreserve(struct qxl_device *qdev,
-			  struct qxl_release *release)
+void qxl_release_backoff_reserve_list(struct qxl_release *release)
 {
-	if (atomic_dec_and_test(&release->bos[0]->reserve_count))
-		qxl_bo_unreserve(release->bos[0]);
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos))
+		return;
+
+	ttm_eu_backoff_reservation(&release->ticket, &release->bos);
 }
+
 
 int qxl_alloc_surface_release_reserved(struct qxl_device *qdev,
 				       enum qxl_surface_cmd_type surface_cmd_type,
 				       struct qxl_release *create_rel,
 				       struct qxl_release **release)
 {
-	int ret;
-
 	if (surface_cmd_type == QXL_SURFACE_CMD_DESTROY && create_rel) {
 		int idr_ret;
+		struct qxl_bo_list *entry = list_first_entry(&create_rel->bos, struct qxl_bo_list, tv.head);
 		struct qxl_bo *bo;
 		union qxl_release_info *info;
 
 		/* stash the release after the create command */
 		idr_ret = qxl_release_alloc(qdev, QXL_RELEASE_SURFACE_CMD, release);
-		bo = qxl_bo_ref(create_rel->bos[0]);
+		bo = qxl_bo_ref(to_qxl_bo(entry->tv.bo));
 
 		(*release)->release_offset = create_rel->release_offset + 64;
 
-		qxl_release_add_res(qdev, *release, bo);
+		qxl_release_list_add(*release, bo);
 
-		ret = qxl_release_reserve(qdev, *release, false);
-		if (ret) {
-			DRM_ERROR("release reserve failed\n");
-			goto out_unref;
-		}
 		info = qxl_release_map(qdev, *release);
 		info->id = idr_ret;
 		qxl_release_unmap(qdev, *release, info);
 
-
-out_unref:
 		qxl_bo_unref(&bo);
-		return ret;
+		return 0;
 	}
 
 	return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_surface_cmd),
···
 {
 	struct qxl_bo *bo;
 	int idr_ret;
-	int ret;
+	int ret = 0;
 	union qxl_release_info *info;
 	int cur_idx;
 
···
 			mutex_unlock(&qdev->release_mutex);
 			return ret;
 		}
-
-		/* pin releases bo's they are too messy to evict */
-		ret = qxl_bo_reserve(qdev->current_release_bo[cur_idx], false);
-		qxl_bo_pin(qdev->current_release_bo[cur_idx], QXL_GEM_DOMAIN_VRAM, NULL);
-		qxl_bo_unreserve(qdev->current_release_bo[cur_idx]);
 	}
 
 	bo = qxl_bo_ref(qdev->current_release_bo[cur_idx]);
···
 	if (rbo)
 		*rbo = bo;
 
-	qxl_release_add_res(qdev, *release, bo);
-
-	ret = qxl_release_reserve(qdev, *release, false);
 	mutex_unlock(&qdev->release_mutex);
-	if (ret)
-		goto out_unref;
+
+	qxl_release_list_add(*release, bo);
 
 	info = qxl_release_map(qdev, *release);
 	info->id = idr_ret;
 	qxl_release_unmap(qdev, *release, info);
 
-out_unref:
 	qxl_bo_unref(&bo);
 	return ret;
-}
-
-int qxl_fence_releaseable(struct qxl_device *qdev,
-			  struct qxl_release *release)
-{
-	int i, ret;
-	for (i = 0; i < release->bo_count; i++) {
-		if (!release->bos[i]->tbo.sync_obj)
-			release->bos[i]->tbo.sync_obj = &release->bos[i]->fence;
-		ret = qxl_fence_add_release(&release->bos[i]->fence, release->id);
-		if (ret)
-			return ret;
-	}
-	return 0;
 }
 
 struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev,
···
 		DRM_ERROR("failed to find id in release_idr\n");
 		return NULL;
 	}
-	if (release->bo_count < 1) {
-		DRM_ERROR("read a released resource with 0 bos\n");
-		return NULL;
-	}
+
 	return release;
 }
 
···
 {
 	void *ptr;
 	union qxl_release_info *info;
-	struct qxl_bo *bo = release->bos[0];
+	struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
+	struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
 
 	ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_SIZE);
+	if (!ptr)
+		return NULL;
 	info = ptr + (release->release_offset & ~PAGE_SIZE);
 	return info;
 }
···
 		       struct qxl_release *release,
 		       union qxl_release_info *info)
 {
-	struct qxl_bo *bo = release->bos[0];
+	struct qxl_bo_list *entry = list_first_entry(&release->bos, struct qxl_bo_list, tv.head);
+	struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
 	void *ptr;
 
 	ptr = ((void *)info) - (release->release_offset & ~PAGE_SIZE);
 	qxl_bo_kunmap_atomic_page(qdev, bo, ptr);
 }
+
+void qxl_release_fence_buffer_objects(struct qxl_release *release)
+{
+	struct ttm_validate_buffer *entry;
+	struct ttm_buffer_object *bo;
+	struct ttm_bo_global *glob;
+	struct ttm_bo_device *bdev;
+	struct ttm_bo_driver *driver;
+	struct qxl_bo *qbo;
+
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos))
+		return;
+
+	bo = list_first_entry(&release->bos, struct ttm_validate_buffer, head)->bo;
+	bdev = bo->bdev;
+	driver = bdev->driver;
+	glob = bo->glob;
+
+	spin_lock(&glob->lru_lock);
+	spin_lock(&bdev->fence_lock);
+
+	list_for_each_entry(entry, &release->bos, head) {
+		bo = entry->bo;
+		qbo = to_qxl_bo(bo);
+
+		if (!entry->bo->sync_obj)
+			entry->bo->sync_obj = &qbo->fence;
+
+		qxl_fence_add_release_locked(&qbo->fence, release->id);
+
+		ttm_bo_add_to_lru(bo);
+		ww_mutex_unlock(&bo->resv->lock);
+		entry->reserved = false;
+	}
+	spin_unlock(&bdev->fence_lock);
+	spin_unlock(&glob->lru_lock);
+	ww_acquire_fini(&release->ticket);
+}
+

drivers/gpu/drm/qxl/qxl_ttm.c

···
 		return;
 	}
 	qbo = container_of(bo, struct qxl_bo, tbo);
-	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);
+	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
 	*placement = qbo->placement;
 }