Merge tag 'drm-misc-fixes-2023-01-12' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Several fixes for amdgpu (all addressing issues with fences), yet
another orientation quirk for a Lenovo device, a use-after-free fix for
virtio, a regression fix in TTM and a performance regression in drm
buddy.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20230112130954.pxt77g3a7rokha42@houat

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

@@ -61,6 +61,8 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p,
 		amdgpu_ctx_put(p->ctx);
 		return -ECANCELED;
 	}
+
+	amdgpu_sync_create(&p->sync);
 	return 0;
 }
 
@@ -452,18 +454,6 @@ static int amdgpu_syncobj_lookup_and_add(struct amdgpu_cs_parser *p,
 	}
 
 	r = amdgpu_sync_fence(&p->sync, fence);
-	if (r)
-		goto error;
-
-	/*
-	 * When we have an explicit dependency it might be necessary to insert a
-	 * pipeline sync to make sure that all caches etc are flushed and the
-	 * next job actually sees the results from the previous one.
-	 */
-	if (fence->context == p->gang_leader->base.entity->fence_context)
-		r = amdgpu_sync_fence(&p->gang_leader->explicit_sync, fence);
-
-error:
 	dma_fence_put(fence);
 	return r;
 }
@@ -1188,10 +1178,19 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 {
 	struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
+	struct drm_gpu_scheduler *sched;
 	struct amdgpu_bo_list_entry *e;
+	struct dma_fence *fence;
 	unsigned int i;
 	int r;
 
+	r = amdgpu_ctx_wait_prev_fence(p->ctx, p->entities[p->gang_leader_idx]);
+	if (r) {
+		if (r != -ERESTARTSYS)
+			DRM_ERROR("amdgpu_ctx_wait_prev_fence failed.\n");
+		return r;
+	}
+
 	list_for_each_entry(e, &p->validated, tv.head) {
 		struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
 		struct dma_resv *resv = bo->tbo.base.resv;
@@ -1211,10 +1210,24 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 			return r;
 	}
 
-	r = amdgpu_ctx_wait_prev_fence(p->ctx, p->entities[p->gang_leader_idx]);
-	if (r && r != -ERESTARTSYS)
-		DRM_ERROR("amdgpu_ctx_wait_prev_fence failed.\n");
-	return r;
+	sched = p->gang_leader->base.entity->rq->sched;
+	while ((fence = amdgpu_sync_get_fence(&p->sync))) {
+		struct drm_sched_fence *s_fence = to_drm_sched_fence(fence);
+
+		/*
+		 * When we have an dependency it might be necessary to insert a
+		 * pipeline sync to make sure that all caches etc are flushed and the
+		 * next job actually sees the results from the previous one
+		 * before we start executing on the same scheduler ring.
+		 */
+		if (!s_fence || s_fence->sched != sched)
+			continue;
+
+		r = amdgpu_sync_fence(&p->gang_leader->explicit_sync, fence);
+		if (r)
+			return r;
+	}
+	return 0;
 }
 
 static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
@@ -1254,9 +1267,12 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 			continue;
 
 		fence = &p->jobs[i]->base.s_fence->scheduled;
+		dma_fence_get(fence);
 		r = drm_sched_job_add_dependency(&leader->base, fence);
-		if (r)
+		if (r) {
+			dma_fence_put(fence);
 			goto error_cleanup;
+		}
 	}
 
 	if (p->gang_size > 1) {
@@ -1344,6 +1360,7 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser)
 {
 	unsigned i;
 
+	amdgpu_sync_free(&parser->sync);
 	for (i = 0; i < parser->num_post_deps; i++) {
 		drm_syncobj_put(parser->post_deps[i].syncobj);
 		kfree(parser->post_deps[i].chain);

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

@@ -391,8 +391,10 @@ int amdgpu_sync_push_to_job(struct amdgpu_sync *sync, struct amdgpu_job *job)
 
 		dma_fence_get(f);
 		r = drm_sched_job_add_dependency(&job->base, f);
-		if (r)
+		if (r) {
+			dma_fence_put(f);
 			return r;
+		}
 	}
 	return 0;
 }

drivers/gpu/drm/drm_buddy.c

@@ -38,6 +38,25 @@ static void drm_block_free(struct drm_buddy *mm,
 	kmem_cache_free(slab_blocks, block);
 }
 
+static void list_insert_sorted(struct drm_buddy *mm,
+			       struct drm_buddy_block *block)
+{
+	struct drm_buddy_block *node;
+	struct list_head *head;
+
+	head = &mm->free_list[drm_buddy_block_order(block)];
+	if (list_empty(head)) {
+		list_add(&block->link, head);
+		return;
+	}
+
+	list_for_each_entry(node, head, link)
+		if (drm_buddy_block_offset(block) < drm_buddy_block_offset(node))
+			break;
+
+	__list_add(&block->link, node->link.prev, &node->link);
+}
+
 static void mark_allocated(struct drm_buddy_block *block)
 {
 	block->header &= ~DRM_BUDDY_HEADER_STATE;
@@ -52,8 +71,7 @@ static void mark_free(struct drm_buddy *mm,
 	block->header &= ~DRM_BUDDY_HEADER_STATE;
 	block->header |= DRM_BUDDY_FREE;
 
-	list_add(&block->link,
-		 &mm->free_list[drm_buddy_block_order(block)]);
+	list_insert_sorted(mm, block);
 }
 
 static void mark_split(struct drm_buddy_block *block)
@@ -387,20 +405,26 @@ alloc_range_bias(struct drm_buddy *mm,
 }
 
 static struct drm_buddy_block *
-get_maxblock(struct list_head *head)
+get_maxblock(struct drm_buddy *mm, unsigned int order)
 {
 	struct drm_buddy_block *max_block = NULL, *node;
+	unsigned int i;
 
-	max_block = list_first_entry_or_null(head,
-					     struct drm_buddy_block,
-					     link);
-	if (!max_block)
-		return NULL;
+	for (i = order; i <= mm->max_order; ++i) {
+		if (!list_empty(&mm->free_list[i])) {
+			node = list_last_entry(&mm->free_list[i],
+					       struct drm_buddy_block,
+					       link);
+			if (!max_block) {
+				max_block = node;
+				continue;
+			}
 
-	list_for_each_entry(node, head, link) {
-		if (drm_buddy_block_offset(node) >
-		    drm_buddy_block_offset(max_block))
-			max_block = node;
+			if (drm_buddy_block_offset(node) >
+			    drm_buddy_block_offset(max_block)) {
+				max_block = node;
+			}
+		}
 	}
 
 	return max_block;
@@ -412,20 +436,23 @@ alloc_from_freelist(struct drm_buddy *mm,
 		    unsigned long flags)
 {
 	struct drm_buddy_block *block = NULL;
-	unsigned int i;
+	unsigned int tmp;
 	int err;
 
-	for (i = order; i <= mm->max_order; ++i) {
-		if (flags & DRM_BUDDY_TOPDOWN_ALLOCATION) {
-			block = get_maxblock(&mm->free_list[i]);
-			if (block)
-				break;
-		} else {
-			block = list_first_entry_or_null(&mm->free_list[i],
-							 struct drm_buddy_block,
-							 link);
-			if (block)
-				break;
+	if (flags & DRM_BUDDY_TOPDOWN_ALLOCATION) {
+		block = get_maxblock(mm, order);
+		if (block)
+			/* Store the obtained block order */
+			tmp = drm_buddy_block_order(block);
+	} else {
+		for (tmp = order; tmp <= mm->max_order; ++tmp) {
+			if (!list_empty(&mm->free_list[tmp])) {
+				block = list_last_entry(&mm->free_list[tmp],
+							struct drm_buddy_block,
+							link);
+				if (block)
+					break;
+			}
 		}
 	}
 
@@ -434,18 +461,18 @@ alloc_from_freelist(struct drm_buddy *mm,
 
 	BUG_ON(!drm_buddy_block_is_free(block));
 
-	while (i != order) {
+	while (tmp != order) {
 		err = split_block(mm, block);
 		if (unlikely(err))
 			goto err_undo;
 
 		block = block->right;
-		i--;
+		tmp--;
 	}
 	return block;
 
 err_undo:
-	if (i != order)
+	if (tmp != order)
 		__drm_buddy_free(mm, block);
 	return ERR_PTR(err);
 }

drivers/gpu/drm/drm_panel_orientation_quirks.c

@@ -304,6 +304,12 @@ static const struct dmi_system_id orientation_data[] = {
 		  DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
 		},
 		.driver_data = (void *)&lcd1200x1920_rightside_up,
+	}, {	/* Lenovo Ideapad D330-10IGL (HD) */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGL"),
+		},
+		.driver_data = (void *)&lcd800x1280_rightside_up,
 	}, {	/* Lenovo Yoga Book X90F / X91F / X91L */
 		.matches = {
 		  /* Non exact match to match all versions */

drivers/gpu/drm/nouveau/nouveau_fbcon.c

-/*
- * Copyright © 2007 David Airlie
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- *     David Airlie
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/sysrq.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/screen_info.h>
-#include <linux/vga_switcheroo.h>
-#include <linux/console.h>
-
-#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_probe_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_atomic.h>
-
-#include "nouveau_drv.h"
-#include "nouveau_gem.h"
-#include "nouveau_bo.h"
-#include "nouveau_fbcon.h"
-#include "nouveau_chan.h"
-#include "nouveau_vmm.h"
-
-#include "nouveau_crtc.h"
-
-MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
-int nouveau_nofbaccel = 0;
-module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
-
-MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
-static int nouveau_fbcon_bpp;
-module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
-
-static void
-nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	struct nvif_device *device = &drm->client.device;
-	int ret;
-
-	if (info->state != FBINFO_STATE_RUNNING)
-		return;
-
-	ret = -ENODEV;
-	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
-	    mutex_trylock(&drm->client.mutex)) {
-		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
-			ret = nv04_fbcon_fillrect(info, rect);
-		else
-		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
-			ret = nv50_fbcon_fillrect(info, rect);
-		else
-			ret = nvc0_fbcon_fillrect(info, rect);
-		mutex_unlock(&drm->client.mutex);
-	}
-
-	if (ret == 0)
-		return;
-
-	if (ret != -ENODEV)
-		nouveau_fbcon_gpu_lockup(info);
-	drm_fb_helper_cfb_fillrect(info, rect);
-}
-
-static void
-nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	struct nvif_device *device = &drm->client.device;
-	int ret;
-
-	if (info->state != FBINFO_STATE_RUNNING)
-		return;
-
-	ret = -ENODEV;
-	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
-	    mutex_trylock(&drm->client.mutex)) {
-		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
-			ret = nv04_fbcon_copyarea(info, image);
-		else
-		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
-			ret = nv50_fbcon_copyarea(info, image);
-		else
-			ret = nvc0_fbcon_copyarea(info, image);
-		mutex_unlock(&drm->client.mutex);
-	}
-
-	if (ret == 0)
-		return;
-
-	if (ret != -ENODEV)
-		nouveau_fbcon_gpu_lockup(info);
-	drm_fb_helper_cfb_copyarea(info, image);
-}
-
-static void
-nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	struct nvif_device *device = &drm->client.device;
-	int ret;
-
-	if (info->state != FBINFO_STATE_RUNNING)
-		return;
-
-	ret = -ENODEV;
-	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
-	    mutex_trylock(&drm->client.mutex)) {
-		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
-			ret = nv04_fbcon_imageblit(info, image);
-		else
-		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
-			ret = nv50_fbcon_imageblit(info, image);
-		else
-			ret = nvc0_fbcon_imageblit(info, image);
-		mutex_unlock(&drm->client.mutex);
-	}
-
-	if (ret == 0)
-		return;
-
-	if (ret != -ENODEV)
-		nouveau_fbcon_gpu_lockup(info);
-	drm_fb_helper_cfb_imageblit(info, image);
-}
-
-static int
-nouveau_fbcon_sync(struct fb_info *info)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	struct nouveau_channel *chan = drm->channel;
-	int ret;
-
-	if (!chan || !chan->accel_done || in_interrupt() ||
-	    info->state != FBINFO_STATE_RUNNING ||
-	    info->flags & FBINFO_HWACCEL_DISABLED)
-		return 0;
-
-	if (!mutex_trylock(&drm->client.mutex))
-		return 0;
-
-	ret = nouveau_channel_idle(chan);
-	mutex_unlock(&drm->client.mutex);
-	if (ret) {
-		nouveau_fbcon_gpu_lockup(info);
-		return 0;
-	}
-
-	chan->accel_done = false;
-	return 0;
-}
-
-static int
-nouveau_fbcon_open(struct fb_info *info, int user)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	int ret = pm_runtime_get_sync(drm->dev->dev);
-	if (ret < 0 && ret != -EACCES) {
-		pm_runtime_put(drm->dev->dev);
-		return ret;
-	}
-	return 0;
-}
-
-static int
-nouveau_fbcon_release(struct fb_info *info, int user)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-	pm_runtime_put(drm->dev->dev);
-	return 0;
-}
-
-static const struct fb_ops nouveau_fbcon_ops = {
-	.owner = THIS_MODULE,
-	DRM_FB_HELPER_DEFAULT_OPS,
-	.fb_open = nouveau_fbcon_open,
-	.fb_release = nouveau_fbcon_release,
-	.fb_fillrect = nouveau_fbcon_fillrect,
-	.fb_copyarea = nouveau_fbcon_copyarea,
-	.fb_imageblit = nouveau_fbcon_imageblit,
-	.fb_sync = nouveau_fbcon_sync,
-};
-
-static const struct fb_ops nouveau_fbcon_sw_ops = {
-	.owner = THIS_MODULE,
-	DRM_FB_HELPER_DEFAULT_OPS,
-	.fb_open = nouveau_fbcon_open,
-	.fb_release = nouveau_fbcon_release,
-	.fb_fillrect = drm_fb_helper_cfb_fillrect,
-	.fb_copyarea = drm_fb_helper_cfb_copyarea,
-	.fb_imageblit = drm_fb_helper_cfb_imageblit,
-};
-
-void
-nouveau_fbcon_accel_save_disable(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	if (drm->fbcon && drm->fbcon->helper.info) {
-		drm->fbcon->saved_flags = drm->fbcon->helper.info->flags;
-		drm->fbcon->helper.info->flags |= FBINFO_HWACCEL_DISABLED;
-	}
-}
-
-void
-nouveau_fbcon_accel_restore(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	if (drm->fbcon && drm->fbcon->helper.info)
-		drm->fbcon->helper.info->flags = drm->fbcon->saved_flags;
-}
-
-static void
-nouveau_fbcon_accel_fini(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nouveau_fbdev *fbcon = drm->fbcon;
-	if (fbcon && drm->channel) {
-		console_lock();
-		if (fbcon->helper.info)
-			fbcon->helper.info->flags |= FBINFO_HWACCEL_DISABLED;
-		console_unlock();
-		nouveau_channel_idle(drm->channel);
-		nvif_object_dtor(&fbcon->twod);
-		nvif_object_dtor(&fbcon->blit);
-		nvif_object_dtor(&fbcon->gdi);
-		nvif_object_dtor(&fbcon->patt);
-		nvif_object_dtor(&fbcon->rop);
-		nvif_object_dtor(&fbcon->clip);
-		nvif_object_dtor(&fbcon->surf2d);
-	}
-}
-
-static void
-nouveau_fbcon_accel_init(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nouveau_fbdev *fbcon = drm->fbcon;
-	struct fb_info *info = fbcon->helper.info;
-	int ret;
-
-	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
-		ret = nv04_fbcon_accel_init(info);
-	else
-	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
-		ret = nv50_fbcon_accel_init(info);
-	else
-		ret = nvc0_fbcon_accel_init(info);
-
-	if (ret == 0)
-		info->fbops = &nouveau_fbcon_ops;
-}
-
-static void
-nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
-{
-	struct fb_info *info = fbcon->helper.info;
-	struct fb_fillrect rect;
-
-	/* Clear the entire fbcon.  The drm will program every connector
-	 * with it's preferred mode.  If the sizes differ, one display will
-	 * quite likely have garbage around the console.
-	 */
-	rect.dx = rect.dy = 0;
-	rect.width = info->var.xres_virtual;
-	rect.height = info->var.yres_virtual;
-	rect.color = 0;
-	rect.rop = ROP_COPY;
-	info->fbops->fb_fillrect(info, &rect);
-}
-
-static int
-nouveau_fbcon_create(struct drm_fb_helper *helper,
-		     struct drm_fb_helper_surface_size *sizes)
-{
-	struct nouveau_fbdev *fbcon =
-		container_of(helper, struct nouveau_fbdev, helper);
-	struct drm_device *dev = fbcon->helper.dev;
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvif_device *device = &drm->client.device;
-	struct fb_info *info;
-	struct drm_framebuffer *fb;
-	struct nouveau_channel *chan;
-	struct nouveau_bo *nvbo;
-	struct drm_mode_fb_cmd2 mode_cmd = {};
-	int ret;
-
-	mode_cmd.width = sizes->surface_width;
-	mode_cmd.height = sizes->surface_height;
-
-	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
-	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
-
-	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
-							  sizes->surface_depth);
-
-	ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
-			      mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
-			      0, 0x0000, &nvbo);
-	if (ret) {
-		NV_ERROR(drm, "failed to allocate framebuffer\n");
-		goto out;
-	}
-
-	ret = nouveau_framebuffer_new(dev, &mode_cmd, &nvbo->bo.base, &fb);
-	if (ret)
-		goto out_unref;
-
-	ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, false);
-	if (ret) {
-		NV_ERROR(drm, "failed to pin fb: %d\n", ret);
-		goto out_unref;
-	}
-
-	ret = nouveau_bo_map(nvbo);
-	if (ret) {
-		NV_ERROR(drm, "failed to map fb: %d\n", ret);
-		goto out_unpin;
-	}
-
-	chan = nouveau_nofbaccel ? NULL : drm->channel;
-	if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
-		ret = nouveau_vma_new(nvbo, chan->vmm, &fbcon->vma);
-		if (ret) {
-			NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
-			chan = NULL;
-		}
-	}
-
-	info = drm_fb_helper_alloc_info(helper);
-	if (IS_ERR(info)) {
-		ret = PTR_ERR(info);
-		goto out_unlock;
-	}
-
-	/* setup helper */
-	fbcon->helper.fb = fb;
-
-	if (!chan)
-		info->flags = FBINFO_HWACCEL_DISABLED;
-	else
-		info->flags = FBINFO_HWACCEL_COPYAREA |
-			      FBINFO_HWACCEL_FILLRECT |
-			      FBINFO_HWACCEL_IMAGEBLIT;
-	info->fbops = &nouveau_fbcon_sw_ops;
-	info->fix.smem_start = nvbo->bo.resource->bus.offset;
-	info->fix.smem_len = nvbo->bo.base.size;
-
-	info->screen_base = nvbo_kmap_obj_iovirtual(nvbo);
-	info->screen_size = nvbo->bo.base.size;
-
-	drm_fb_helper_fill_info(info, &fbcon->helper, sizes);
-
-	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
-
-	if (chan)
-		nouveau_fbcon_accel_init(dev);
-	nouveau_fbcon_zfill(dev, fbcon);
-
-	/* To allow resizeing without swapping buffers */
-	NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
-		fb->width, fb->height, nvbo->offset, nvbo);
-
-	if (dev_is_pci(dev->dev))
-		vga_switcheroo_client_fb_set(to_pci_dev(dev->dev), info);
-
-	return 0;
-
-out_unlock:
-	if (chan)
-		nouveau_vma_del(&fbcon->vma);
-	nouveau_bo_unmap(nvbo);
-out_unpin:
-	nouveau_bo_unpin(nvbo);
-out_unref:
-	nouveau_bo_ref(NULL, &nvbo);
-out:
-	return ret;
-}
-
-static int
-nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
-{
-	struct drm_framebuffer *fb = fbcon->helper.fb;
-	struct nouveau_bo *nvbo;
-
-	drm_fb_helper_unregister_info(&fbcon->helper);
-	drm_fb_helper_fini(&fbcon->helper);
-
-	if (fb && fb->obj[0]) {
-		nvbo = nouveau_gem_object(fb->obj[0]);
-		nouveau_vma_del(&fbcon->vma);
-		nouveau_bo_unmap(nvbo);
-		nouveau_bo_unpin(nvbo);
-		drm_framebuffer_put(fb);
-	}
-
-	return 0;
-}
-
-void nouveau_fbcon_gpu_lockup(struct fb_info *info)
-{
-	struct nouveau_fbdev *fbcon = info->par;
-	struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
-
-	NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
-	info->flags |= FBINFO_HWACCEL_DISABLED;
-}
-
-static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
-	.fb_probe = nouveau_fbcon_create,
-};
-
-static void
-nouveau_fbcon_set_suspend_work(struct work_struct *work)
-{
-	struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
-	int state = READ_ONCE(drm->fbcon_new_state);
-
-	if (state == FBINFO_STATE_RUNNING)
-		pm_runtime_get_sync(drm->dev->dev);
-
-	console_lock();
-	if (state == FBINFO_STATE_RUNNING)
-		nouveau_fbcon_accel_restore(drm->dev);
-	drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
-	if (state != FBINFO_STATE_RUNNING)
-		nouveau_fbcon_accel_save_disable(drm->dev);
-	console_unlock();
-
-	if (state == FBINFO_STATE_RUNNING) {
-		nouveau_fbcon_hotplug_resume(drm->fbcon);
-		pm_runtime_mark_last_busy(drm->dev->dev);
-		pm_runtime_put_autosuspend(drm->dev->dev);
-	}
-}
-
-void
-nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-
-	if (!drm->fbcon)
-		return;
-
-	drm->fbcon_new_state = state;
-	/* Since runtime resume can happen as a result of a sysfs operation,
-	 * it's possible we already have the console locked. So handle fbcon
-	 * init/deinit from a seperate work thread
-	 */
-	schedule_work(&drm->fbcon_work);
-}
-
-void
-nouveau_fbcon_output_poll_changed(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nouveau_fbdev *fbcon = drm->fbcon;
-	int ret;
-
-	if (!fbcon)
-		return;
-
-	mutex_lock(&fbcon->hotplug_lock);
-
-	ret = pm_runtime_get(dev->dev);
-	if (ret == 1 || ret == -EACCES) {
-		drm_fb_helper_hotplug_event(&fbcon->helper);
-
-		pm_runtime_mark_last_busy(dev->dev);
-		pm_runtime_put_autosuspend(dev->dev);
-	} else if (ret == 0) {
-		/* If the GPU was already in the process of suspending before
-		 * this event happened, then we can't block here as we'll
-		 * deadlock the runtime pmops since they wait for us to
-		 * finish. So, just defer this event for when we runtime
-		 * resume again. It will be handled by fbcon_work.
-		 */
-		NV_DEBUG(drm, "fbcon HPD event deferred until runtime resume\n");
-		fbcon->hotplug_waiting = true;
-		pm_runtime_put_noidle(drm->dev->dev);
-	} else {
-		DRM_WARN("fbcon HPD event lost due to RPM failure: %d\n",
-			 ret);
-	}
-
-	mutex_unlock(&fbcon->hotplug_lock);
-}
-
-void
-nouveau_fbcon_hotplug_resume(struct nouveau_fbdev *fbcon)
-{
-	struct nouveau_drm *drm;
-
-	if (!fbcon)
-		return;
-	drm = nouveau_drm(fbcon->helper.dev);
-
-	mutex_lock(&fbcon->hotplug_lock);
-	if (fbcon->hotplug_waiting) {
-		fbcon->hotplug_waiting = false;
-
-		NV_DEBUG(drm, "Handling deferred fbcon HPD events\n");
-		drm_fb_helper_hotplug_event(&fbcon->helper);
-	}
-	mutex_unlock(&fbcon->hotplug_lock);
-}
-
-int
-nouveau_fbcon_init(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nouveau_fbdev *fbcon;
-	int preferred_bpp = nouveau_fbcon_bpp;
-	int ret;
-
-	if (!dev->mode_config.num_crtc ||
-	    (to_pci_dev(dev->dev)->class >> 8) != PCI_CLASS_DISPLAY_VGA)
-		return 0;
-
-	fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
-	if (!fbcon)
-		return -ENOMEM;
-
-	drm->fbcon = fbcon;
-	INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
-	mutex_init(&fbcon->hotplug_lock);
-
-	drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
-
-	ret = drm_fb_helper_init(dev, &fbcon->helper);
-	if (ret)
-		goto free;
-
-	if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
-		if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
-			preferred_bpp = 8;
-		else
-		if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
-			preferred_bpp = 16;
-		else
-			preferred_bpp = 32;
-	}
-
-	/* disable all the possible outputs/crtcs before entering KMS mode */
-	if (!drm_drv_uses_atomic_modeset(dev))
-		drm_helper_disable_unused_functions(dev);
-
-	ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
-	if (ret)
-		goto fini;
-
-	if (fbcon->helper.info)
-		fbcon->helper.info->pixmap.buf_align = 4;
-	return 0;
-
-fini:
-	drm_fb_helper_fini(&fbcon->helper);
-free:
-	kfree(fbcon);
-	drm->fbcon = NULL;
-	return ret;
-}
-
-void
-nouveau_fbcon_fini(struct drm_device *dev)
-{
-	struct nouveau_drm *drm = nouveau_drm(dev);
-
-	if (!drm->fbcon)
-		return;
-
-	drm_kms_helper_poll_fini(dev);
-	nouveau_fbcon_accel_fini(dev);
-	nouveau_fbcon_destroy(dev, drm->fbcon);
-	kfree(drm->fbcon);
-	drm->fbcon = NULL;
-}

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, ttm->num_pages, dst_iter, src_iter);
+		ttm_move_memcpy(clear, PFN_UP(dst_mem->size), dst_iter, src_iter);
 
 	if (!src_iter->ops->maps_tt)
 		ttm_kmap_iter_linear_io_fini(&_src_iter.io, bdev, src_mem);

drivers/gpu/drm/virtio/virtgpu_ioctl.c

@@ -358,10 +358,18 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
 		drm_gem_object_release(obj);
 		return ret;
 	}
-	drm_gem_object_put(obj);
 
 	rc->res_handle = qobj->hw_res_handle; /* similiar to a VM address */
 	rc->bo_handle = handle;
+
+	/*
+	 * The handle owns the reference now.  But we must drop our
+	 * remaining reference *after* we no longer need to dereference
+	 * the obj.  Otherwise userspace could guess the handle and
+	 * race closing it from another thread.
+	 */
+	drm_gem_object_put(obj);
+
 	return 0;
 }
 
@@ -723,11 +731,18 @@ static int virtio_gpu_resource_create_blob_ioctl(struct drm_device *dev,
 		drm_gem_object_release(obj);
 		return ret;
 	}
-	drm_gem_object_put(obj);
 
 	rc_blob->res_handle = bo->hw_res_handle;
 	rc_blob->bo_handle = handle;
 
+	/*
+	 * The handle owns the reference now.  But we must drop our
+	 * remaining reference *after* we no longer need to dereference
+	 * the obj.  Otherwise userspace could guess the handle and
+	 * race closing it from another thread.
+	 */
+	drm_gem_object_put(obj);
+
 	return 0;
 }
 

drivers/gpu/drm/vmwgfx/ttm_object.c

@@ -254,40 +254,6 @@ void ttm_base_object_unref(struct ttm_base_object **p_base)
 	kref_put(&base->refcount, ttm_release_base);
 }
 
-/**
- * ttm_base_object_noref_lookup - look up a base object without reference
- * @tfile: The struct ttm_object_file the object is registered with.
- * @key: The object handle.
- *
- * This function looks up a ttm base object and returns a pointer to it
- * without refcounting the pointer. The returned pointer is only valid
- * until ttm_base_object_noref_release() is called, and the object
- * pointed to by the returned pointer may be doomed. Any persistent usage
- * of the object requires a refcount to be taken using kref_get_unless_zero().
- * Iff this function returns successfully it needs to be paired with
- * ttm_base_object_noref_release() and no sleeping- or scheduling functions
- * may be called inbetween these function callse.
- *
- * Return: A pointer to the object if successful or NULL otherwise.
- */
-struct ttm_base_object *
-ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint64_t key)
-{
-	struct vmwgfx_hash_item *hash;
-	int ret;
-
-	rcu_read_lock();
-	ret = ttm_tfile_find_ref_rcu(tfile, key, &hash);
-	if (ret) {
-		rcu_read_unlock();
-		return NULL;
-	}
-
-	__release(RCU);
-	return hlist_entry(hash, struct ttm_ref_object, hash)->obj;
-}
-EXPORT_SYMBOL(ttm_base_object_noref_lookup);
-
 struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
 					       uint64_t key)
 {
@@ -295,15 +261,16 @@ struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
 	struct vmwgfx_hash_item *hash;
 	int ret;
 
-	rcu_read_lock();
-	ret = ttm_tfile_find_ref_rcu(tfile, key, &hash);
+	spin_lock(&tfile->lock);
+	ret = ttm_tfile_find_ref(tfile, key, &hash);
 
 	if (likely(ret == 0)) {
 		base = hlist_entry(hash, struct ttm_ref_object, hash)->obj;
 		if (!kref_get_unless_zero(&base->refcount))
 			base = NULL;
 	}
-	rcu_read_unlock();
+	spin_unlock(&tfile->lock);
+
 
 	return base;
 }

drivers/gpu/drm/vmwgfx/ttm_object.h

@@ -307,18 +307,4 @@ extern int ttm_prime_handle_to_fd(struct ttm_object_file *tfile,
 #define ttm_prime_object_kfree(__obj, __prime)		\
 	kfree_rcu(__obj, __prime.base.rhead)
 
-struct ttm_base_object *
-ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint64_t key);
-
-/**
- * ttm_base_object_noref_release - release a base object pointer looked up
- * without reference
- *
- * Releases a base object pointer looked up with ttm_base_object_noref_lookup().
- */
-static inline void ttm_base_object_noref_release(void)
-{
-	__acquire(RCU);
-	rcu_read_unlock();
-}
 #endif

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

@@ -715,44 +715,6 @@ int vmw_user_bo_lookup(struct drm_file *filp,
 	return 0;
 }
 
-/**
- * vmw_user_bo_noref_lookup - Look up a vmw user buffer object without reference
- * @filp: The TTM object file the handle is registered with.
- * @handle: The user buffer object handle.
- *
- * This function looks up a struct vmw_bo and returns a pointer to the
- * struct vmw_buffer_object it derives from without refcounting the pointer.
- * The returned pointer is only valid until vmw_user_bo_noref_release() is
- * called, and the object pointed to by the returned pointer may be doomed.
- * Any persistent usage of the object requires a refcount to be taken using
- * ttm_bo_reference_unless_doomed(). Iff this function returns successfully it
- * needs to be paired with vmw_user_bo_noref_release() and no sleeping-
- * or scheduling functions may be called in between these function calls.
- *
- * Return: A struct vmw_buffer_object pointer if successful or negative
- * error pointer on failure.
- */
-struct vmw_buffer_object *
-vmw_user_bo_noref_lookup(struct drm_file *filp, u32 handle)
-{
-	struct vmw_buffer_object *vmw_bo;
-	struct ttm_buffer_object *bo;
-	struct drm_gem_object *gobj = drm_gem_object_lookup(filp, handle);
-
-	if (!gobj) {
-		DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",
-			  (unsigned long)handle);
-		return ERR_PTR(-ESRCH);
-	}
-	vmw_bo = gem_to_vmw_bo(gobj);
-	bo = ttm_bo_get_unless_zero(&vmw_bo->base);
-	vmw_bo = vmw_buffer_object(bo);
-	drm_gem_object_put(gobj);
-
-	return vmw_bo;
-}
-
-
 /**
  * vmw_bo_fence_single - Utility function to fence a single TTM buffer
  *                       object without unreserving it.

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -830,12 +830,7 @@ extern int vmw_user_resource_lookup_handle(
 	uint32_t handle,
 	const struct vmw_user_resource_conv *converter,
 	struct vmw_resource **p_res);
-extern struct vmw_resource *
-vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
-				      struct ttm_object_file *tfile,
-				      uint32_t handle,
-				      const struct vmw_user_resource_conv *
-				      converter);
+
 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
 				  struct drm_file *file_priv);
 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
@@ -874,15 +869,6 @@ static inline bool vmw_resource_mob_attached(const struct vmw_resource *res)
 	return !RB_EMPTY_NODE(&res->mob_node);
 }
 
-/**
- * vmw_user_resource_noref_release - release a user resource pointer looked up
- * without reference
- */
-static inline void vmw_user_resource_noref_release(void)
-{
-	ttm_base_object_noref_release();
-}
-
 /**
  * Buffer object helper functions - vmwgfx_bo.c
  */
@@ -934,8 +920,6 @@ extern void vmw_bo_unmap(struct vmw_buffer_object *vbo);
 extern void vmw_bo_move_notify(struct ttm_buffer_object *bo,
 			       struct ttm_resource *mem);
 extern void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
-extern struct vmw_buffer_object *
-vmw_user_bo_noref_lookup(struct drm_file *filp, u32 handle);
 
 /**
  * vmw_bo_adjust_prio - Adjust the buffer object eviction priority

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

@@ -290,20 +290,26 @@ static void vmw_execbuf_rcache_update(struct vmw_res_cache_entry *rcache,
 	rcache->valid_handle = 0;
 }
 
+enum vmw_val_add_flags {
+	vmw_val_add_flag_none  =      0,
+	vmw_val_add_flag_noctx = 1 << 0,
+};
+
 /**
- * vmw_execbuf_res_noref_val_add - Add a resource described by an unreferenced
- * rcu-protected pointer to the validation list.
+ * vmw_execbuf_res_val_add - Add a resource to the validation list.
  *
  * @sw_context: Pointer to the software context.
  * @res: Unreferenced rcu-protected pointer to the resource.
  * @dirty: Whether to change dirty status.
+ * @flags: specifies whether to use the context or not
  *
  * Returns: 0 on success. Negative error code on failure. Typical error codes
  * are %-EINVAL on inconsistency and %-ESRCH if the resource was doomed.
  */
-static int vmw_execbuf_res_noref_val_add(struct vmw_sw_context *sw_context,
-					 struct vmw_resource *res,
-					 u32 dirty)
+static int vmw_execbuf_res_val_add(struct vmw_sw_context *sw_context,
+				   struct vmw_resource *res,
+				   u32 dirty,
+				   u32 flags)
 {
 	struct vmw_private *dev_priv = res->dev_priv;
 	int ret;
@@ -318,24 +324,30 @@ static int vmw_execbuf_res_noref_val_add(struct vmw_sw_context *sw_context,
 		if (dirty)
 			vmw_validation_res_set_dirty(sw_context->ctx,
 						     rcache->private, dirty);
-		vmw_user_resource_noref_release();
 		return 0;
 	}
 
-	priv_size = vmw_execbuf_res_size(dev_priv, res_type);
-	ret = vmw_validation_add_resource(sw_context->ctx, res, priv_size,
-					  dirty, (void **)&ctx_info,
-					  &first_usage);
-	vmw_user_resource_noref_release();
-	if (ret)
-		return ret;
+	if ((flags & vmw_val_add_flag_noctx) != 0) {
+		ret = vmw_validation_add_resource(sw_context->ctx, res, 0, dirty,
+						  (void **)&ctx_info, NULL);
+		if (ret)
+			return ret;
 
-	if (priv_size && first_usage) {
-		ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, res,
-					      ctx_info);
-		if (ret) {
-			VMW_DEBUG_USER("Failed first usage context setup.\n");
+	} else {
+		priv_size = vmw_execbuf_res_size(dev_priv, res_type);
+		ret = vmw_validation_add_resource(sw_context->ctx, res, priv_size,
+						  dirty, (void **)&ctx_info,
+						  &first_usage);
+		if (ret)
 			return ret;
+
+		if (priv_size && first_usage) {
+			ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, res,
+						      ctx_info);
+			if (ret) {
+				VMW_DEBUG_USER("Failed first usage context setup.\n");
+				return ret;
+			}
 		}
 	}
 
@@ -343,43 +355,6 @@ static int vmw_execbuf_res_noref_val_add(struct vmw_sw_context *sw_context,
 	return 0;
 }
 
-/**
- * vmw_execbuf_res_noctx_val_add - Add a non-context resource to the resource
- * validation list if it's not already on it
- *
- * @sw_context: Pointer to the software context.
- * @res: Pointer to the resource.
- * @dirty: Whether to change dirty status.
- *
- * Returns: Zero on success. Negative error code on failure.
- */
-static int vmw_execbuf_res_noctx_val_add(struct vmw_sw_context *sw_context,
-					 struct vmw_resource *res,
-					 u32 dirty)
-{
-	struct vmw_res_cache_entry *rcache;
-	enum vmw_res_type res_type = vmw_res_type(res);
-	void *ptr;
-	int ret;
-
-	rcache = &sw_context->res_cache[res_type];
-	if (likely(rcache->valid && rcache->res == res)) {
-		if (dirty)
-			vmw_validation_res_set_dirty(sw_context->ctx,
-						     rcache->private, dirty);
-		return 0;
-	}
-
-	ret = vmw_validation_add_resource(sw_context->ctx, res, 0, dirty,
-					  &ptr, NULL);
-	if (ret)
-		return ret;
-
-	vmw_execbuf_rcache_update(rcache, res, ptr);
-
-	return 0;
-}
-
 /**
  * vmw_view_res_val_add - Add a view and the surface it's pointing to to the
  * validation list
@@ -398,13 +373,13 @@ static int vmw_view_res_val_add(struct vmw_sw_context *sw_context,
 	 * First add the resource the view is pointing to, otherwise it may be
 	 * swapped out when the view is validated.
 	 */
-	ret = vmw_execbuf_res_noctx_val_add(sw_context, vmw_view_srf(view),
-					    vmw_view_dirtying(view));
+	ret = vmw_execbuf_res_val_add(sw_context, vmw_view_srf(view),
+				      vmw_view_dirtying(view), vmw_val_add_flag_noctx);
 	if (ret)
 		return ret;
 
-	return vmw_execbuf_res_noctx_val_add(sw_context, view,
-					     VMW_RES_DIRTY_NONE);
+	return vmw_execbuf_res_val_add(sw_context, view, VMW_RES_DIRTY_NONE,
+				       vmw_val_add_flag_noctx);
 }
 
 /**
@@ -475,8 +450,9 @@ static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
 			if (IS_ERR(res))
 				continue;
 
-			ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-							    VMW_RES_DIRTY_SET);
+			ret = vmw_execbuf_res_val_add(sw_context, res,
+						      VMW_RES_DIRTY_SET,
+						      vmw_val_add_flag_noctx);
 			if (unlikely(ret != 0))
 				return ret;
 		}
@@ -490,9 +466,9 @@ static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
 		if (vmw_res_type(entry->res) == vmw_res_view)
 			ret = vmw_view_res_val_add(sw_context, entry->res);
 		else
-			ret = vmw_execbuf_res_noctx_val_add
-				(sw_context, entry->res,
-				 vmw_binding_dirtying(entry->bt));
+			ret = vmw_execbuf_res_val_add(sw_context, entry->res,
+						      vmw_binding_dirtying(entry->bt),
+						      vmw_val_add_flag_noctx);
 		if (unlikely(ret != 0))
 			break;
 	}
@@ -658,7 +634,8 @@ vmw_cmd_res_check(struct vmw_private *dev_priv,
 {
 	struct vmw_res_cache_entry *rcache = &sw_context->res_cache[res_type];
 	struct vmw_resource *res;
-	int ret;
+	int ret = 0;
+	bool needs_unref = false;
 
 	if (p_res)
 		*p_res = NULL;
@@ -683,17 +660,18 @@ vmw_cmd_res_check(struct vmw_private *dev_priv,
 		if (ret)
 			return ret;
 
-		res = vmw_user_resource_noref_lookup_handle
-			(dev_priv, sw_context->fp->tfile, *id_loc, converter);
-		if (IS_ERR(res)) {
+		ret = vmw_user_resource_lookup_handle
+			(dev_priv, sw_context->fp->tfile, *id_loc, converter, &res);
+		if (ret != 0) {
 			VMW_DEBUG_USER("Could not find/use resource 0x%08x.\n",
 				       (unsigned int) *id_loc);
-			return PTR_ERR(res);
+			return ret;
 		}
+		needs_unref = true;
 
-		ret = vmw_execbuf_res_noref_val_add(sw_context, res, dirty);
+		ret = vmw_execbuf_res_val_add(sw_context, res, dirty, vmw_val_add_flag_none);
 		if (unlikely(ret != 0))
-			return ret;
+			goto res_check_done;
 
 		if (rcache->valid && rcache->res == res) {
 			rcache->valid_handle = true;
@@ -708,7 +686,11 @@ vmw_cmd_res_check(struct vmw_private *dev_priv,
 	if (p_res)
 		*p_res = res;
 
-	return 0;
+res_check_done:
+	if (needs_unref)
+		vmw_resource_unreference(&res);
+
+	return ret;
 }
 
 /**
@@ -1171,9 +1153,9 @@ static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
 	int ret;
 
 	vmw_validation_preload_bo(sw_context->ctx);
-	vmw_bo = vmw_user_bo_noref_lookup(sw_context->filp, handle);
-	if (IS_ERR(vmw_bo)) {
-		VMW_DEBUG_USER("Could not find or use MOB buffer.\n");
+	ret = vmw_user_bo_lookup(sw_context->filp, handle, &vmw_bo);
+	if (ret != 0) {
+		drm_dbg(&dev_priv->drm, "Could not find or use MOB buffer.\n");
 		return PTR_ERR(vmw_bo);
 	}
 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, true, false);
@@ -1225,9 +1207,9 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
 	int ret;
 
 	vmw_validation_preload_bo(sw_context->ctx);
-	vmw_bo = vmw_user_bo_noref_lookup(sw_context->filp, handle);
-	if (IS_ERR(vmw_bo)) {
-		VMW_DEBUG_USER("Could not find or use GMR region.\n");
+	ret = vmw_user_bo_lookup(sw_context->filp, handle, &vmw_bo);
+	if (ret != 0) {
+		drm_dbg(&dev_priv->drm, "Could not find or use GMR region.\n");
 		return PTR_ERR(vmw_bo);
 	}
 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, false, false);
@@ -2025,8 +2007,9 @@ static int vmw_cmd_set_shader(struct vmw_private *dev_priv,
 		res = vmw_shader_lookup(vmw_context_res_man(ctx),
 					cmd->body.shid, cmd->body.type);
 		if (!IS_ERR(res)) {
-			ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-							    VMW_RES_DIRTY_NONE);
+			ret = vmw_execbuf_res_val_add(sw_context, res,
+						      VMW_RES_DIRTY_NONE,
+						      vmw_val_add_flag_noctx);
 			if (unlikely(ret != 0))
 				return ret;
 
@@ -2273,8 +2256,9 @@ static int vmw_cmd_dx_set_shader(struct vmw_private *dev_priv,
 			return PTR_ERR(res);
 		}
 
-		ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-						    VMW_RES_DIRTY_NONE);
+		ret = vmw_execbuf_res_val_add(sw_context, res,
+					      VMW_RES_DIRTY_NONE,
+					      vmw_val_add_flag_noctx);
 		if (ret)
 			return ret;
 	}
@@ -2777,8 +2761,8 @@ static int vmw_cmd_dx_bind_shader(struct vmw_private *dev_priv,
 		return PTR_ERR(res);
 	}
 
-	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-					    VMW_RES_DIRTY_NONE);
+	ret = vmw_execbuf_res_val_add(sw_context, res, VMW_RES_DIRTY_NONE,
+				      vmw_val_add_flag_noctx);
 	if (ret) {
 		VMW_DEBUG_USER("Error creating resource validation node.\n");
 		return ret;
@@ -3098,8 +3082,8 @@ static int vmw_cmd_dx_bind_streamoutput(struct vmw_private *dev_priv,
 
 	vmw_dx_streamoutput_set_size(res, cmd->body.sizeInBytes);
 
-	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-					    VMW_RES_DIRTY_NONE);
+	ret = vmw_execbuf_res_val_add(sw_context, res, VMW_RES_DIRTY_NONE,
+				      vmw_val_add_flag_noctx);
 	if (ret) {
 		DRM_ERROR("Error creating resource validation node.\n");
 		return ret;
@@ -3148,8 +3132,8 @@ static int vmw_cmd_dx_set_streamoutput(struct vmw_private *dev_priv,
 		return 0;
 	}
 
-	ret = vmw_execbuf_res_noctx_val_add(sw_context, res,
-					    VMW_RES_DIRTY_NONE);
+	ret = vmw_execbuf_res_val_add(sw_context, res, VMW_RES_DIRTY_NONE,
+				      vmw_val_add_flag_noctx);
 	if (ret) {
 		DRM_ERROR("Error creating resource validation node.\n");
 		return ret;
@@ -4066,22 +4050,26 @@ static int vmw_execbuf_tie_context(struct vmw_private *dev_priv,
 	if (ret)
 		return ret;
 
-	res = vmw_user_resource_noref_lookup_handle
+	ret = vmw_user_resource_lookup_handle
 		(dev_priv, sw_context->fp->tfile, handle,
-		 user_context_converter);
-	if (IS_ERR(res)) {
+		 user_context_converter, &res);
+	if (ret != 0) {
 		VMW_DEBUG_USER("Could not find or user DX context 0x%08x.\n",
 			       (unsigned int) handle);
-		return PTR_ERR(res);
+		return ret;
 	}
 
-	ret = vmw_execbuf_res_noref_val_add(sw_context, res, VMW_RES_DIRTY_SET);
-	if (unlikely(ret != 0))
+	ret = vmw_execbuf_res_val_add(sw_context, res, VMW_RES_DIRTY_SET,
+				      vmw_val_add_flag_none);
+	if (unlikely(ret != 0)) {
+		vmw_resource_unreference(&res);
 		return ret;
+	}
 
 	sw_context->dx_ctx_node = vmw_execbuf_info_from_res(sw_context, res);
 	sw_context->man = vmw_context_res_man(res);
 
+	vmw_resource_unreference(&res);
 	return 0;
 }
 

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

@@ -281,39 +281,6 @@ int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv,
 	return ret;
 }
 
-/**
- * vmw_user_resource_noref_lookup_handle - lookup a struct resource from a
- * TTM user-space handle and perform basic type checks
- *
- * @dev_priv:     Pointer to a device private struct
- * @tfile:        Pointer to a struct ttm_object_file identifying the caller
- * @handle:       The TTM user-space handle
- * @converter:    Pointer to an object describing the resource type
- *
- * If the handle can't be found or is associated with an incorrect resource
- * type, -EINVAL will be returned.
- */
-struct vmw_resource *
-vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
-				      struct ttm_object_file *tfile,
-				      uint32_t handle,
-				      const struct vmw_user_resource_conv
-				      *converter)
-{
-	struct ttm_base_object *base;
-
-	base = ttm_base_object_noref_lookup(tfile, handle);
-	if (!base)
-		return ERR_PTR(-ESRCH);
-
-	if (unlikely(ttm_base_object_type(base) != converter->object_type)) {
-		ttm_base_object_noref_release();
-		return ERR_PTR(-EINVAL);
-	}
-
-	return converter->base_obj_to_res(base);
-}
-
 /*
  * Helper function that looks either a surface or bo.
  *