Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux into drm-next

Mostly code reorganizations and optimizations for vmwgfx.
- Move TTM code that's only used by vmwgfx to vmwgfx
- Break out the vmwgfx buffer- and resource validation code to a separate source file
- Get rid of a number of atomic operations during command buffer validation.

From: Thomas Hellstrom <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/ttm/Makefile

···
 
 ttm-y := ttm_memory.o ttm_tt.o ttm_bo.o \
 	ttm_bo_util.o ttm_bo_vm.o ttm_module.o \
-	ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o \
-	ttm_bo_manager.o ttm_page_alloc_dma.o
+	ttm_execbuf_util.o ttm_page_alloc.o ttm_bo_manager.o \
+	ttm_page_alloc_dma.o
 ttm-$(CONFIG_AGP) += ttm_agp_backend.o
 
 obj-$(CONFIG_DRM_TTM) += ttm.o

drivers/gpu/drm/ttm/ttm_bo_vm.c

···
 	node = drm_vma_offset_lookup_locked(&bdev->vma_manager, offset, pages);
 	if (likely(node)) {
 		bo = container_of(node, struct ttm_buffer_object, vma_node);
-		if (!kref_get_unless_zero(&bo->kref))
-			bo = NULL;
+		bo = ttm_bo_get_unless_zero(bo);
 	}
 
 	drm_vma_offset_unlock_lookup(&bdev->vma_manager);

drivers/gpu/drm/ttm/ttm_lock.c drivers/gpu/drm/vmwgfx/ttm_lock.c

···
  * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  */
 
-#include <drm/ttm/ttm_lock.h>
 #include <drm/ttm/ttm_module.h>
 #include <linux/atomic.h>
 #include <linux/errno.h>
 #include <linux/wait.h>
 #include <linux/sched/signal.h>
-#include <linux/module.h>
+#include "ttm_lock.h"
+#include "ttm_object.h"
 
 #define TTM_WRITE_LOCK_PENDING    (1 << 0)
 #define TTM_VT_LOCK_PENDING       (1 << 1)
···
 	lock->kill_takers = false;
 	lock->signal = SIGKILL;
 }
-EXPORT_SYMBOL(ttm_lock_init);
 
 void ttm_read_unlock(struct ttm_lock *lock)
 {
···
 		wake_up_all(&lock->queue);
 	spin_unlock(&lock->lock);
 }
-EXPORT_SYMBOL(ttm_read_unlock);
 
 static bool __ttm_read_lock(struct ttm_lock *lock)
 {
···
 		wait_event(lock->queue, __ttm_read_lock(lock));
 	return ret;
 }
-EXPORT_SYMBOL(ttm_read_lock);
 
 static bool __ttm_read_trylock(struct ttm_lock *lock, bool *locked)
 {
···
 	wake_up_all(&lock->queue);
 	spin_unlock(&lock->lock);
 }
-EXPORT_SYMBOL(ttm_write_unlock);
 
 static bool __ttm_write_lock(struct ttm_lock *lock)
 {
···
 
 	return ret;
 }
-EXPORT_SYMBOL(ttm_write_lock);
 
 static int __ttm_vt_unlock(struct ttm_lock *lock)
 {
···
 
 	return ret;
 }
-EXPORT_SYMBOL(ttm_vt_lock);
 
 int ttm_vt_unlock(struct ttm_lock *lock)
 {
 	return ttm_ref_object_base_unref(lock->vt_holder,
-					 lock->base.hash.key, TTM_REF_USAGE);
+					 lock->base.handle, TTM_REF_USAGE);
 }
-EXPORT_SYMBOL(ttm_vt_unlock);
 
 void ttm_suspend_unlock(struct ttm_lock *lock)
 {
···
 	wake_up_all(&lock->queue);
 	spin_unlock(&lock->lock);
 }
-EXPORT_SYMBOL(ttm_suspend_unlock);
 
 static bool __ttm_suspend_lock(struct ttm_lock *lock)
 {
···
 {
 	wait_event(lock->queue, __ttm_suspend_lock(lock));
 }
-EXPORT_SYMBOL(ttm_suspend_lock);

drivers/gpu/drm/ttm/ttm_object.c drivers/gpu/drm/vmwgfx/ttm_object.c

···
 
 #define pr_fmt(fmt) "[TTM] " fmt
 
-#include <drm/ttm/ttm_object.h>
 #include <drm/ttm/ttm_module.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
-#include <linux/module.h>
 #include <linux/atomic.h>
+#include "ttm_object.h"
 
 struct ttm_object_file {
 	struct ttm_object_device *tdev;
···
 	struct dma_buf_ops ops;
 	void (*dmabuf_release)(struct dma_buf *dma_buf);
 	size_t dma_buf_size;
+	struct idr idr;
 };
 
 /**
···
 	base->ref_obj_release = ref_obj_release;
 	base->object_type = object_type;
 	kref_init(&base->refcount);
+	idr_preload(GFP_KERNEL);
 	spin_lock(&tdev->object_lock);
-	ret = drm_ht_just_insert_please_rcu(&tdev->object_hash,
-					    &base->hash,
-					    (unsigned long)base, 31, 0, 0);
+	ret = idr_alloc(&tdev->idr, base, 0, 0, GFP_NOWAIT);
 	spin_unlock(&tdev->object_lock);
-	if (unlikely(ret != 0))
-		goto out_err0;
+	idr_preload_end();
+	if (ret < 0)
+		return ret;
 
+	base->handle = ret;
 	ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false);
 	if (unlikely(ret != 0))
 		goto out_err1;
···
 	return 0;
 out_err1:
 	spin_lock(&tdev->object_lock);
-	(void)drm_ht_remove_item_rcu(&tdev->object_hash, &base->hash);
+	idr_remove(&tdev->idr, base->handle);
 	spin_unlock(&tdev->object_lock);
-out_err0:
 	return ret;
 }
-EXPORT_SYMBOL(ttm_base_object_init);
 
 static void ttm_release_base(struct kref *kref)
 {
···
 	struct ttm_object_device *tdev = base->tfile->tdev;
 
 	spin_lock(&tdev->object_lock);
-	(void)drm_ht_remove_item_rcu(&tdev->object_hash, &base->hash);
+	idr_remove(&tdev->idr, base->handle);
 	spin_unlock(&tdev->object_lock);
 
 	/*
···
 
 	kref_put(&base->refcount, ttm_release_base);
 }
-EXPORT_SYMBOL(ttm_base_object_unref);
+
+/**
+ * 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, uint32_t key)
+{
+	struct drm_hash_item *hash;
+	struct drm_open_hash *ht = &tfile->ref_hash[TTM_REF_USAGE];
+	int ret;
+
+	rcu_read_lock();
+	ret = drm_ht_find_item_rcu(ht, key, &hash);
+	if (ret) {
+		rcu_read_unlock();
+		return NULL;
+	}
+
+	__release(RCU);
+	return drm_hash_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,
 					       uint32_t key)
···
 
 	return base;
 }
-EXPORT_SYMBOL(ttm_base_object_lookup);
 
 struct ttm_base_object *
 ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key)
 {
-	struct ttm_base_object *base = NULL;
-	struct drm_hash_item *hash;
-	struct drm_open_hash *ht = &tdev->object_hash;
-	int ret;
+	struct ttm_base_object *base;
 
 	rcu_read_lock();
-	ret = drm_ht_find_item_rcu(ht, key, &hash);
+	base = idr_find(&tdev->idr, key);
 
-	if (likely(ret == 0)) {
-		base = drm_hash_entry(hash, struct ttm_base_object, hash);
-		if (!kref_get_unless_zero(&base->refcount))
-			base = NULL;
-	}
+	if (base && !kref_get_unless_zero(&base->refcount))
+		base = NULL;
 	rcu_read_unlock();
 
 	return base;
 }
-EXPORT_SYMBOL(ttm_base_object_lookup_for_ref);
 
 /**
  * ttm_ref_object_exists - Check whether a caller has a valid ref object
···
 	struct ttm_ref_object *ref;
 
 	rcu_read_lock();
-	if (unlikely(drm_ht_find_item_rcu(ht, base->hash.key, &hash) != 0))
+	if (unlikely(drm_ht_find_item_rcu(ht, base->handle, &hash) != 0))
 		goto out_false;
 
 	/*
···
 	rcu_read_unlock();
 	return false;
 }
-EXPORT_SYMBOL(ttm_ref_object_exists);
 
 int ttm_ref_object_add(struct ttm_object_file *tfile,
 		       struct ttm_base_object *base,
···
 
 	while (ret == -EINVAL) {
 		rcu_read_lock();
-		ret = drm_ht_find_item_rcu(ht, base->hash.key, &hash);
+		ret = drm_ht_find_item_rcu(ht, base->handle, &hash);
 
 		if (ret == 0) {
 			ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
···
 			return -ENOMEM;
 		}
 
-		ref->hash.key = base->hash.key;
+		ref->hash.key = base->handle;
 		ref->obj = base;
 		ref->tfile = tfile;
 		ref->ref_type = ref_type;
···
 
 	return ret;
 }
-EXPORT_SYMBOL(ttm_ref_object_add);
 
-static void ttm_ref_object_release(struct kref *kref)
+static void __releases(tfile->lock) __acquires(tfile->lock)
+ttm_ref_object_release(struct kref *kref)
 {
 	struct ttm_ref_object *ref =
 	    container_of(kref, struct ttm_ref_object, kref);
···
 	spin_unlock(&tfile->lock);
 	return 0;
 }
-EXPORT_SYMBOL(ttm_ref_object_base_unref);
 
 void ttm_object_file_release(struct ttm_object_file **p_tfile)
 {
···
 
 	ttm_object_file_unref(&tfile);
 }
-EXPORT_SYMBOL(ttm_object_file_release);
 
 struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev,
 					     unsigned int hash_order)
···
 
 	return NULL;
 }
-EXPORT_SYMBOL(ttm_object_file_init);
 
 struct ttm_object_device *
 ttm_object_device_init(struct ttm_mem_global *mem_glob,
···
 	if (ret != 0)
 		goto out_no_object_hash;
 
+	idr_init(&tdev->idr);
 	tdev->ops = *ops;
 	tdev->dmabuf_release = tdev->ops.release;
 	tdev->ops.release = ttm_prime_dmabuf_release;
···
 	kfree(tdev);
 	return NULL;
 }
-EXPORT_SYMBOL(ttm_object_device_init);
 
 void ttm_object_device_release(struct ttm_object_device **p_tdev)
 {
···
 
 	*p_tdev = NULL;
 
+	WARN_ON_ONCE(!idr_is_empty(&tdev->idr));
+	idr_destroy(&tdev->idr);
 	drm_ht_remove(&tdev->object_hash);
 
 	kfree(tdev);
 }
-EXPORT_SYMBOL(ttm_object_device_release);
 
 /**
  * get_dma_buf_unless_doomed - get a dma_buf reference if possible.
···
 
 	prime = (struct ttm_prime_object *) dma_buf->priv;
 	base = &prime->base;
-	*handle = base->hash.key;
+	*handle = base->handle;
 	ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false);
 
 	dma_buf_put(dma_buf);
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ttm_prime_fd_to_handle);
 
 /**
  * ttm_prime_handle_to_fd - Return a dma_buf fd from a ttm prime object
···
 		ttm_base_object_unref(&base);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ttm_prime_handle_to_fd);
 
 /**
  * ttm_prime_object_init - Initialize a ttm_prime_object
···
 				    ttm_prime_refcount_release,
 				    ref_obj_release);
 }
-EXPORT_SYMBOL(ttm_prime_object_init);

drivers/gpu/drm/vmwgfx/Makefile

···
 	    vmwgfx_surface.o vmwgfx_prime.o vmwgfx_mob.o vmwgfx_shader.o \
 	    vmwgfx_cmdbuf_res.o vmwgfx_cmdbuf.o vmwgfx_stdu.o \
 	    vmwgfx_cotable.o vmwgfx_so.o vmwgfx_binding.o vmwgfx_msg.o \
-	    vmwgfx_simple_resource.o vmwgfx_va.o vmwgfx_blit.o
+	    vmwgfx_simple_resource.o vmwgfx_va.o vmwgfx_blit.o \
+	    vmwgfx_validation.o \
+	    ttm_object.o ttm_lock.o
 
 obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

···
 
 #include <drm/drmP.h>
 #include "vmwgfx_drv.h"
-#include "drm/ttm/ttm_object.h"
+#include "ttm_object.h"
 
 
 /**
···
 		struct_size = backend_size +
 			ttm_round_pot(sizeof(struct vmw_buffer_object));
 		user_struct_size = backend_size +
-			ttm_round_pot(sizeof(struct vmw_user_buffer_object));
+		  ttm_round_pot(sizeof(struct vmw_user_buffer_object)) +
+				      TTM_OBJ_EXTRA_SIZE;
 	}
 
 	if (dev_priv->map_mode == vmw_dma_alloc_coherent)
···
 		*p_base = &user_bo->prime.base;
 		kref_get(&(*p_base)->refcount);
 	}
-	*handle = user_bo->prime.base.hash.key;
+	*handle = user_bo->prime.base.handle;
 
 out_no_base_object:
 	return ret;
···
 	return 0;
 }
 
+/**
+ * vmw_user_bo_noref_lookup - Look up a vmw user buffer object without reference
+ * @tfile: The TTM object file the handle is registered with.
+ * @handle: The user buffer object handle.
+ *
+ * This function looks up a struct vmw_user_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 inbetween 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 ttm_object_file *tfile, u32 handle)
+{
+	struct vmw_user_buffer_object *vmw_user_bo;
+	struct ttm_base_object *base;
+
+	base = ttm_base_object_noref_lookup(tfile, handle);
+	if (!base) {
+		DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",
+			  (unsigned long)handle);
+		return ERR_PTR(-ESRCH);
+	}
+
+	if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) {
+		ttm_base_object_noref_release();
+		DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",
+			  (unsigned long)handle);
+		return ERR_PTR(-EINVAL);
+	}
+
+	vmw_user_bo = container_of(base, struct vmw_user_buffer_object,
+				   prime.base);
+	return &vmw_user_bo->vbo;
+}
 
 /**
  * vmw_user_bo_reference - Open a handle to a vmw user buffer object.
···
 
 	user_bo = container_of(vbo, struct vmw_user_buffer_object, vbo);
 
-	*handle = user_bo->prime.base.hash.key;
+	*handle = user_bo->prime.base.handle;
 	return ttm_ref_object_add(tfile, &user_bo->prime.base,
 				  TTM_REF_USAGE, NULL, false);
 }

drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c

···
 {
 	struct vmw_cmdbuf_header *cur = man->cur;
 
-	WARN_ON(!mutex_is_locked(&man->cur_mutex));
+	lockdep_assert_held_once(&man->cur_mutex);
 
 	if (!cur)
 		return;
···
 {
 	struct vmw_cmdbuf_header *cur = man->cur;
 
-	WARN_ON(!mutex_is_locked(&man->cur_mutex));
+	lockdep_assert_held_once(&man->cur_mutex);
 
 	WARN_ON(size > cur->reserved);
 	man->cur_pos += size;

drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c

···
 	if (unlikely(ret != 0))
 		return ERR_PTR(ret);
 
-	return vmw_resource_reference
-		(drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res);
+	return drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res;
 }
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_context.c

···
 		}
 	}
 
-
-
-	vmw_resource_activate(res, vmw_hw_context_destroy);
+	res->hw_destroy = vmw_hw_context_destroy;
 	return 0;
 
 out_cotables:
···
 
 	vmw_fifo_commit(dev_priv, sizeof(*cmd));
 	vmw_fifo_resource_inc(dev_priv);
-	vmw_resource_activate(res, vmw_hw_context_destroy);
+	res->hw_destroy = vmw_hw_context_destroy;
 	return 0;
 
 out_early:
···
 		return -EINVAL;
 	}
 
-	/*
-	 * Approximate idr memory usage with 128 bytes. It will be limited
-	 * by maximum number_of contexts anyway.
-	 */
-
 	if (unlikely(vmw_user_context_size == 0))
-		vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128 +
-		  ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0);
+		vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) +
+		  ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0) +
+		  + VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
 
 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 	if (unlikely(ret != 0))
···
 		goto out_err;
 	}
 
-	arg->cid = ctx->base.hash.key;
+	arg->cid = ctx->base.handle;
 out_err:
 	vmw_resource_unreference(&res);
 out_unlock:
···
 	if (cotable_type >= SVGA_COTABLE_DX10_MAX)
 		return ERR_PTR(-EINVAL);
 
-	return vmw_resource_reference
-		(container_of(ctx, struct vmw_user_context, res)->
-		 cotables[cotable_type]);
+	return container_of(ctx, struct vmw_user_context, res)->
+		cotables[cotable_type];
 }
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c

···
 	vcotbl->type = type;
 	vcotbl->ctx = ctx;
 
-	vmw_resource_activate(&vcotbl->res, vmw_hw_cotable_destroy);
+	vcotbl->res.hw_destroy = vmw_hw_cotable_destroy;
 
 	return &vcotbl->res;
 

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

···
 #include <drm/drmP.h>
 #include "vmwgfx_drv.h"
 #include "vmwgfx_binding.h"
+#include "ttm_object.h"
 #include <drm/ttm/ttm_placement.h>
 #include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_object.h>
 #include <drm/ttm/ttm_module.h>
 #include <linux/dma_remapping.h>
 
···
 	mutex_init(&dev_priv->binding_mutex);
 	mutex_init(&dev_priv->requested_layout_mutex);
 	mutex_init(&dev_priv->global_kms_state_mutex);
-	rwlock_init(&dev_priv->resource_lock);
 	ttm_lock_init(&dev_priv->reservation_sem);
+	spin_lock_init(&dev_priv->resource_lock);
 	spin_lock_init(&dev_priv->hw_lock);
 	spin_lock_init(&dev_priv->waiter_lock);
 	spin_lock_init(&dev_priv->cap_lock);

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

···
 #ifndef _VMWGFX_DRV_H_
 #define _VMWGFX_DRV_H_
 
+#include "vmwgfx_validation.h"
 #include "vmwgfx_reg.h"
 #include <drm/drmP.h>
 #include <drm/vmwgfx_drm.h>
···
 #include <drm/drm_auth.h>
 #include <linux/suspend.h>
 #include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_object.h>
-#include <drm/ttm/ttm_lock.h>
 #include <drm/ttm/ttm_execbuf_util.h>
 #include <drm/ttm/ttm_module.h>
 #include "vmwgfx_fence.h"
+#include "ttm_object.h"
+#include "ttm_lock.h"
 #include <linux/sync_file.h>
 
 #define VMWGFX_DRIVER_NAME "vmwgfx"
···
 };
 
 struct vmw_res_func;
+
+
+/**
+ * struct vmw-resource - base class for hardware resources
+ *
+ * @kref: For refcounting.
+ * @dev_priv: Pointer to the device private for this resource. Immutable.
+ * @id: Device id. Protected by @dev_priv::resource_lock.
+ * @backup_size: Backup buffer size. Immutable.
+ * @res_dirty: Resource contains data not yet in the backup buffer. Protected
+ * by resource reserved.
+ * @backup_dirty: Backup buffer contains data not yet in the HW resource.
+ * Protecte by resource reserved.
+ * @backup: The backup buffer if any. Protected by resource reserved.
+ * @backup_offset: Offset into the backup buffer if any. Protected by resource
+ * reserved. Note that only a few resource types can have a @backup_offset
+ * different from zero.
+ * @pin_count: The pin count for this resource. A pinned resource has a
+ * pin-count greater than zero. It is not on the resource LRU lists and its
+ * backup buffer is pinned. Hence it can't be evicted.
+ * @func: Method vtable for this resource. Immutable.
+ * @lru_head: List head for the LRU list. Protected by @dev_priv::resource_lock.
+ * @mob_head: List head for the MOB backup list. Protected by @backup reserved.
+ * @binding_head: List head for the context binding list. Protected by
+ * the @dev_priv::binding_mutex
+ * @res_free: The resource destructor.
+ * @hw_destroy: Callback to destroy the resource on the device, as part of
+ * resource destruction.
+ */
 struct vmw_resource {
 	struct kref kref;
 	struct vmw_private *dev_priv;
 	int id;
-	bool avail;
 	unsigned long backup_size;
-	bool res_dirty; /* Protected by backup buffer reserved */
-	bool backup_dirty; /* Protected by backup buffer reserved */
+	bool res_dirty;
+	bool backup_dirty;
 	struct vmw_buffer_object *backup;
 	unsigned long backup_offset;
-	unsigned long pin_count; /* Protected by resource reserved */
+	unsigned long pin_count;
 	const struct vmw_res_func *func;
-	struct list_head lru_head; /* Protected by the resource lock */
-	struct list_head mob_head; /* Protected by @backup reserved */
-	struct list_head binding_head; /* Protected by binding_mutex */
+	struct list_head lru_head;
+	struct list_head mob_head;
+	struct list_head binding_head;
 	void (*res_free) (struct vmw_resource *res);
 	void (*hw_destroy) (struct vmw_resource *res);
 };
···
 	bool dx;
 };
 
-struct vmw_relocation {
-	SVGAMobId *mob_loc;
-	SVGAGuestPtr *location;
-	uint32_t index;
-};
-
 /**
  * struct vmw_res_cache_entry - resource information cache entry
- *
+ * @handle: User-space handle of a resource.
+ * @res: Non-ref-counted pointer to the resource.
+ * @valid_handle: Whether the @handle member is valid.
  * @valid: Whether the entry is valid, which also implies that the execbuf
  * code holds a reference to the resource, and it's placed on the
  * validation list.
- * @handle: User-space handle of a resource.
- * @res: Non-ref-counted pointer to the resource.
  *
  * Used to avoid frequent repeated user-space handle lookups of the
  * same resource.
  */
 struct vmw_res_cache_entry {
-	bool valid;
 	uint32_t handle;
 	struct vmw_resource *res;
-	struct vmw_resource_val_node *node;
+	void *private;
+	unsigned short valid_handle;
+	unsigned short valid;
 };
 
 /**
···
 	vmw_du_screen_target
 };
 
+struct vmw_validation_context;
+struct vmw_ctx_validation_info;
 
+/**
+ * struct vmw_sw_context - Command submission context
+ * @res_ht: Pointer hash table used to find validation duplicates
+ * @kernel: Whether the command buffer originates from kernel code rather
+ * than from user-space
+ * @fp: If @kernel is false, points to the file of the client. Otherwise
+ * NULL
+ * @cmd_bounce: Command bounce buffer used for command validation before
+ * copying to fifo space
+ * @cmd_bounce_size: Current command bounce buffer size
+ * @cur_query_bo: Current buffer object used as query result buffer
+ * @bo_relocations: List of buffer object relocations
+ * @res_relocations: List of resource relocations
+ * @buf_start: Pointer to start of memory where command validation takes
+ * place
+ * @res_cache: Cache of recently looked up resources
+ * @last_query_ctx: Last context that submitted a query
+ * @needs_post_query_barrier: Whether a query barrier is needed after
+ * command submission
+ * @staged_bindings: Cached per-context binding tracker
+ * @staged_bindings_inuse: Whether the cached per-context binding tracker
+ * is in use
+ * @staged_cmd_res: List of staged command buffer managed resources in this
+ * command buffer
+ * @ctx_list: List of context resources referenced in this command buffer
+ * @dx_ctx_node: Validation metadata of the current DX context
+ * @dx_query_mob: The MOB used for DX queries
+ * @dx_query_ctx: The DX context used for the last DX query
+ * @man: Pointer to the command buffer managed resource manager
+ * @ctx: The validation context
+ */
 struct vmw_sw_context{
 	struct drm_open_hash res_ht;
 	bool res_ht_initialized;
-	bool kernel; /**< is the called made from the kernel */
+	bool kernel;
 	struct vmw_fpriv *fp;
-	struct list_head validate_nodes;
-	struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
-	uint32_t cur_reloc;
-	struct vmw_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
-	uint32_t cur_val_buf;
 	uint32_t *cmd_bounce;
 	uint32_t cmd_bounce_size;
-	struct list_head resource_list;
-	struct list_head ctx_resource_list; /* For contexts and cotables */
 	struct vmw_buffer_object *cur_query_bo;
+	struct list_head bo_relocations;
 	struct list_head res_relocations;
 	uint32_t *buf_start;
 	struct vmw_res_cache_entry res_cache[vmw_res_max];
 	struct vmw_resource *last_query_ctx;
 	bool needs_post_query_barrier;
-	struct vmw_resource *error_resource;
 	struct vmw_ctx_binding_state *staged_bindings;
 	bool staged_bindings_inuse;
 	struct list_head staged_cmd_res;
-	struct vmw_resource_val_node *dx_ctx_node;
+	struct list_head ctx_list;
+	struct vmw_ctx_validation_info *dx_ctx_node;
 	struct vmw_buffer_object *dx_query_mob;
 	struct vmw_resource *dx_query_ctx;
 	struct vmw_cmdbuf_res_manager *man;
+	struct vmw_validation_context *ctx;
 };
 
 struct vmw_legacy_display;
···
 	 * Context and surface management.
 	 */
 
-	rwlock_t resource_lock;
+	spinlock_t resource_lock;
 	struct idr res_idr[vmw_res_max];
 	/*
 	 * Block lastclose from racing with firstopen.
···
 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
 extern struct vmw_resource *
 vmw_resource_reference_unless_doomed(struct vmw_resource *res);
-extern int vmw_resource_validate(struct vmw_resource *res);
+extern int vmw_resource_validate(struct vmw_resource *res, bool intr);
 extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
 				bool no_backup);
 extern bool vmw_resource_needs_backup(const struct vmw_resource *res);
···
 	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,
···
 extern int vmw_query_readback_all(struct vmw_buffer_object *dx_query_mob);
 extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
 extern void vmw_resource_unbind_list(struct vmw_buffer_object *vbo);
+
+/**
+ * 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
···
 extern void vmw_bo_move_notify(struct ttm_buffer_object *bo,
 			       struct ttm_mem_reg *mem);
 extern void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
+extern struct vmw_buffer_object *
+vmw_user_bo_noref_lookup(struct ttm_object_file *tfile, u32 handle);
+
+/**
+ * vmw_user_bo_noref_release - release a buffer object pointer looked up
+ * without reference
+ */
+static inline void vmw_user_bo_noref_release(void)
+{
+	ttm_base_object_noref_release();
+}
+
 
 /**
  * Misc Ioctl functionality - vmwgfx_ioctl.c
···
 					uint32_t fence_handle,
 					int32_t out_fence_fd,
 					struct sync_file *sync_file);
-extern int vmw_validate_single_buffer(struct vmw_private *dev_priv,
-				      struct ttm_buffer_object *bo,
-				      bool interruptible,
-				      bool validate_as_mob);
 bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd);
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

···
 
 #define VMW_RES_HT_ORDER 12
 
+/*
+ * struct vmw_relocation - Buffer object relocation
+ *
+ * @head: List head for the command submission context's relocation list
+ * @vbo: Non ref-counted pointer to buffer object
+ * @mob_loc: Pointer to location for mob id to be modified
+ * @location: Pointer to location for guest pointer to be modified
+ */
+struct vmw_relocation {
+	struct list_head head;
+	struct vmw_buffer_object *vbo;
+	union {
+		SVGAMobId *mob_loc;
+		SVGAGuestPtr *location;
+	};
+};
+
 /**
  * enum vmw_resource_relocation_type - Relocation type for resources
  *
···
 	enum vmw_resource_relocation_type rel_type:3;
 };
 
-/**
- * struct vmw_resource_val_node - Validation info for resources
- *
- * @head: List head for the software context's resource list.
- * @hash: Hash entry for quick resouce to val_node lookup.
- * @res: Ref-counted pointer to the resource.
- * @switch_backup: Boolean whether to switch backup buffer on unreserve.
- * @new_backup: Refcounted pointer to the new backup buffer.
- * @staged_bindings: If @res is a context, tracks bindings set up during
- * the command batch. Otherwise NULL.
- * @new_backup_offset: New backup buffer offset if @new_backup is non-NUll.
- * @first_usage: Set to true the first time the resource is referenced in
- * the command stream.
- * @switching_backup: The command stream provides a new backup buffer for a
- * resource.
- * @no_buffer_needed: This means @switching_backup is true on first buffer
- * reference. So resource reservation does not need to allocate a backup
- * buffer for the resource.
+/*
+ * struct vmw_ctx_validation_info - Extra validation metadata for contexts
+ * @head: List head of context list
+ * @ctx: The context resource
+ * @cur: The context's persistent binding state
+ * @staged: The binding state changes of this command buffer
  */
-struct vmw_resource_val_node {
+struct vmw_ctx_validation_info {
 	struct list_head head;
-	struct drm_hash_item hash;
-	struct vmw_resource *res;
-	struct vmw_buffer_object *new_backup;
-	struct vmw_ctx_binding_state *staged_bindings;
-	unsigned long new_backup_offset;
-	u32 first_usage : 1;
-	u32 switching_backup : 1;
-	u32 no_buffer_needed : 1;
+	struct vmw_resource *ctx;
+	struct vmw_ctx_binding_state *cur;
+	struct vmw_ctx_binding_state *staged;
 };
 
 /**
···
 				 struct vmw_sw_context *sw_context,
 				 SVGAMobId *id,
 				 struct vmw_buffer_object **vmw_bo_p);
-static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
-				   struct vmw_buffer_object *vbo,
-				   bool validate_as_mob,
-				   uint32_t *p_val_node);
 /**
  * vmw_ptr_diff - Compute the offset from a to b in bytes
  *
···
 }
 
 /**
- * vmw_resources_unreserve - unreserve resources previously reserved for
- * command submission.
- *
- * @sw_context: pointer to the software context
- * @backoff: Whether command submission failed.
+ * vmw_execbuf_bindings_commit - Commit modified binding state
+ * @sw_context: The command submission context
+ * @backoff: Whether this is part of the error path and binding state
+ * changes should be ignored
  */
-static void vmw_resources_unreserve(struct vmw_sw_context *sw_context,
-				    bool backoff)
+static void vmw_execbuf_bindings_commit(struct vmw_sw_context *sw_context,
+					bool backoff)
 {
-	struct vmw_resource_val_node *val;
-	struct list_head *list = &sw_context->resource_list;
+	struct vmw_ctx_validation_info *entry;
 
-	if (sw_context->dx_query_mob && !backoff)
+	list_for_each_entry(entry, &sw_context->ctx_list, head) {
+		if (!backoff)
+			vmw_binding_state_commit(entry->cur, entry->staged);
+		if (entry->staged != sw_context->staged_bindings)
+			vmw_binding_state_free(entry->staged);
+		else
+			sw_context->staged_bindings_inuse = false;
+	}
+
+	/* List entries are freed with the validation context */
+	INIT_LIST_HEAD(&sw_context->ctx_list);
+}
+
+/**
+ * vmw_bind_dx_query_mob - Bind the DX query MOB if referenced
+ * @sw_context: The command submission context
+ */
+static void vmw_bind_dx_query_mob(struct vmw_sw_context *sw_context)
+{
+	if (sw_context->dx_query_mob)
 		vmw_context_bind_dx_query(sw_context->dx_query_ctx,
 					  sw_context->dx_query_mob);
-
-	list_for_each_entry(val, list, head) {
-		struct vmw_resource *res = val->res;
-		bool switch_backup =
-			(backoff) ? false : val->switching_backup;
-
-		/*
-		 * Transfer staged context bindings to the
-		 * persistent context binding tracker.
-		 */
-		if (unlikely(val->staged_bindings)) {
-			if (!backoff) {
-				vmw_binding_state_commit
-					(vmw_context_binding_state(val->res),
-					 val->staged_bindings);
-			}
-
-			if (val->staged_bindings != sw_context->staged_bindings)
-				vmw_binding_state_free(val->staged_bindings);
-			else
-				sw_context->staged_bindings_inuse = false;
-			val->staged_bindings = NULL;
-		}
-		vmw_resource_unreserve(res, switch_backup, val->new_backup,
-				       val->new_backup_offset);
-		vmw_bo_unreference(&val->new_backup);
-	}
 }
 
 /**
···
  * added to the validate list.
  *
  * @dev_priv: Pointer to the device private:
- * @sw_context: The validation context:
- * @node: The validation node holding this context.
+ * @sw_context: The command submission context
+ * @node: The validation node holding the context resource metadata
  */
 static int vmw_cmd_ctx_first_setup(struct vmw_private *dev_priv,
 				   struct vmw_sw_context *sw_context,
-				   struct vmw_resource_val_node *node)
+				   struct vmw_resource *res,
+				   struct vmw_ctx_validation_info *node)
 {
 	int ret;
 
-	ret = vmw_resource_context_res_add(dev_priv, sw_context, node->res);
+	ret = vmw_resource_context_res_add(dev_priv, sw_context, res);
 	if (unlikely(ret != 0))
 		goto out_err;
 
···
 	}
 
 	if (sw_context->staged_bindings_inuse) {
-		node->staged_bindings = vmw_binding_state_alloc(dev_priv);
-		if (IS_ERR(node->staged_bindings)) {
+		node->staged = vmw_binding_state_alloc(dev_priv);
+		if (IS_ERR(node->staged)) {
 			DRM_ERROR("Failed to allocate context binding "
 				  "information.\n");
-			ret = PTR_ERR(node->staged_bindings);
-			node->staged_bindings = NULL;
+			ret = PTR_ERR(node->staged);
+			node->staged = NULL;
 			goto out_err;
 		}
 	} else {
-		node->staged_bindings = sw_context->staged_bindings;
+		node->staged = sw_context->staged_bindings;
 		sw_context->staged_bindings_inuse = true;
 	}
+
+	node->ctx = res;
+	node->cur = vmw_context_binding_state(res);
+	list_add_tail(&node->head, &sw_context->ctx_list);
 
 	return 0;
 out_err:
···
 }
 
 /**
- * vmw_resource_val_add - Add a resource to the software context's
- * resource list if it's not already on it.
+ * vmw_execbuf_res_size - calculate extra size fore the resource validation
+ * node
+ * @dev_priv: Pointer to the device private struct.
+ * @res_type: The resource type.
  *
- * @sw_context: Pointer to the software context.
- * @res: Pointer to the resource.
- * @p_node On successful return points to a valid pointer to a
- * struct vmw_resource_val_node, if non-NULL on entry.
+ * Guest-backed contexts and DX contexts require extra size to store
+ * execbuf private information in the validation node. Typically the
+ * binding manager associated data structures.
+ *
+ * Returns: The extra size requirement based on resource type.
  */
-static int vmw_resource_val_add(struct vmw_sw_context *sw_context,
-				struct vmw_resource *res,
-				struct vmw_resource_val_node **p_node)
+static unsigned int vmw_execbuf_res_size(struct vmw_private *dev_priv,
+					 enum vmw_res_type res_type)
+{
+	return (res_type == vmw_res_dx_context ||
+		(res_type == vmw_res_context && dev_priv->has_mob)) ?
+		sizeof(struct vmw_ctx_validation_info) : 0;
+}
+
+/**
+ * vmw_execbuf_rcache_update - Update a resource-node cache entry
+ *
+ * @rcache: Pointer to the entry to update.
+ * @res: Pointer to the resource.
+ * @private: Pointer to the execbuf-private space in the resource
+ * validation node.
+ */
+static void vmw_execbuf_rcache_update(struct vmw_res_cache_entry *rcache,
+				      struct vmw_resource *res,
+				      void *private)
+{
+	rcache->res = res;
+	rcache->private = private;
+	rcache->valid = 1;
+	rcache->valid_handle = 0;
+}
+
+/**
+ * vmw_execbuf_res_noref_val_add - Add a resource described by an
+ * unreferenced rcu-protected pointer to the validation list.
+ * @sw_context: Pointer to the software context.
+ * @res: Unreferenced rcu-protected pointer to the resource.
+ *
+ * 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)
 {
 	struct vmw_private *dev_priv = res->dev_priv;
-	struct vmw_resource_val_node *node;
-	struct drm_hash_item *hash;
+	int ret;
+	enum vmw_res_type res_type = vmw_res_type(res);
+	struct vmw_res_cache_entry *rcache;
+	struct vmw_ctx_validation_info *ctx_info;
+	bool first_usage;
+	unsigned int priv_size;
+
+	rcache = &sw_context->res_cache[res_type];
+	if (likely(rcache->valid && rcache->res == res)) {
+		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,
+					  (void **)&ctx_info, &first_usage);
+	vmw_user_resource_noref_release();
+	if (ret)
+		return ret;
+
+	if (priv_size && first_usage) {
+		ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, res,
+					      ctx_info);
+		if (ret)
+			return ret;
+	}
+
+	vmw_execbuf_rcache_update(rcache, res, ctx_info);
+	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.
+ *
+ * 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)
+{
+	struct vmw_res_cache_entry *rcache;
+	enum vmw_res_type res_type = vmw_res_type(res);
+	void *ptr;
 	int ret;
 
-	if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) res,
-				    &hash) == 0)) {
-		node = container_of(hash, struct vmw_resource_val_node, hash);
-		node->first_usage = false;
-		if (unlikely(p_node != NULL))
-			*p_node = node;
+	rcache = &sw_context->res_cache[res_type];
+	if (likely(rcache->valid && rcache->res == res))
 		return 0;
-	}
 
-	node = kzalloc(sizeof(*node), GFP_KERNEL);
-	if (unlikely(!node)) {
-		DRM_ERROR("Failed to allocate a resource validation "
-			  "entry.\n");
-		return -ENOMEM;
-	}
-
-	node->hash.key = (unsigned long) res;
-	ret = drm_ht_insert_item(&sw_context->res_ht, &node->hash);
-	if (unlikely(ret != 0)) {
-		DRM_ERROR("Failed to initialize a resource validation "
-			  "entry.\n");
-		kfree(node);
+	ret = vmw_validation_add_resource(sw_context->ctx, res, 0, &ptr, NULL);
+	if (ret)
 		return ret;
-	}
-	node->res = vmw_resource_reference(res);
-	node->first_usage = true;
-	if (unlikely(p_node != NULL))
-		*p_node = node;
 
-	if (!dev_priv->has_mob) {
-		list_add_tail(&node->head, &sw_context->resource_list);
-		return 0;
-	}
+	vmw_execbuf_rcache_update(rcache, res, ptr);
 
-	switch (vmw_res_type(res)) {
-	case vmw_res_context:
-	case vmw_res_dx_context:
-		list_add(&node->head, &sw_context->ctx_resource_list);
-		ret = vmw_cmd_ctx_first_setup(dev_priv, sw_context, node);
-		break;
-	case vmw_res_cotable:
-		list_add_tail(&node->head, &sw_context->ctx_resource_list);
-		break;
-	default:
-		list_add_tail(&node->head, &sw_context->resource_list);
-		break;
-	}
-
-	return ret;
+	return 0;
 }
 
 /**
···
 	 * First add the resource the view is pointing to, otherwise
 	 * it may be swapped out when the view is validated.
 	 */
-	ret = vmw_resource_val_add(sw_context, vmw_view_srf(view), NULL);
+	ret = vmw_execbuf_res_noctx_val_add(sw_context, vmw_view_srf(view));
 	if (ret)
 		return ret;
 
-	return vmw_resource_val_add(sw_context, view, NULL);
+	return vmw_execbuf_res_noctx_val_add(sw_context, view);
 }
 
 /**
···
  *
  * The view is represented by a view id and the DX context it's created on,
  * or scheduled for creation on. If there is no DX context set, the function
- * will return -EINVAL. Otherwise returns 0 on success and -EINVAL on failure.
+ * will return an -EINVAL error pointer.
+ *
+ * Returns: Unreferenced pointer to the resource on success, negative error
+ * pointer on failure.
  */
-static int vmw_view_id_val_add(struct vmw_sw_context *sw_context,
-			       enum vmw_view_type view_type, u32 id)
+static struct vmw_resource *
+vmw_view_id_val_add(struct vmw_sw_context *sw_context,
+		    enum vmw_view_type view_type, u32 id)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_resource *view;
 	int ret;
 
 	if (!ctx_node) {
 		DRM_ERROR("DX Context not set.\n");
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	view = vmw_view_lookup(sw_context->man, view_type, id);
 	if (IS_ERR(view))
-		return PTR_ERR(view);
+		return view;
 
 	ret = vmw_view_res_val_add(sw_context, view);
-	vmw_resource_unreference(&view);
+	if (ret)
+		return ERR_PTR(ret);
 
-	return ret;
+	return view;
 }
 
 /**
···
 			if (IS_ERR(res))
 				continue;
 
-			ret = vmw_resource_val_add(sw_context, res, NULL);
-			vmw_resource_unreference(&res);
+			ret = vmw_execbuf_res_noctx_val_add(sw_context, res);
 			if (unlikely(ret != 0))
 				return ret;
 		}
···
 	binding_list = vmw_context_binding_list(ctx);
 
 	list_for_each_entry(entry, binding_list, ctx_list) {
-		/* entry->res is not refcounted */
-		res = vmw_resource_reference_unless_doomed(entry->res);
-		if (unlikely(res == NULL))
-			continue;
-
 		if (vmw_res_type(entry->res) == vmw_res_view)
 			ret = vmw_view_res_val_add(sw_context, entry->res);
 		else
-			ret = vmw_resource_val_add(sw_context, entry->res,
-						   NULL);
-		vmw_resource_unreference(&res);
+			ret = vmw_execbuf_res_noctx_val_add(sw_context,
+							    entry->res);
 		if (unlikely(ret != 0))
 			break;
 	}
···
 
 		dx_query_mob = vmw_context_get_dx_query_mob(ctx);
 		if (dx_query_mob)
-			ret = vmw_bo_to_validate_list(sw_context,
-						      dx_query_mob,
-						      true, NULL);
+			ret = vmw_validation_add_bo(sw_context->ctx,
+						    dx_query_mob, true, false);
 	}
 
 	mutex_unlock(&dev_priv->binding_mutex);
···
  * id that needs fixup is located. Granularity is one byte.
  * @rel_type: Relocation type.
  */
-static int vmw_resource_relocation_add(struct list_head *list,
+static int vmw_resource_relocation_add(struct vmw_sw_context *sw_context,
 				       const struct vmw_resource *res,
 				       unsigned long offset,
 				       enum vmw_resource_relocation_type
···
 {
 	struct vmw_resource_relocation *rel;
 
-	rel = kmalloc(sizeof(*rel), GFP_KERNEL);
+	rel = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*rel));
 	if (unlikely(!rel)) {
 		DRM_ERROR("Failed to allocate a resource relocation.\n");
 		return -ENOMEM;
···
 	rel->res = res;
 	rel->offset = offset;
 	rel->rel_type = rel_type;
-	list_add_tail(&rel->head, list);
+	list_add_tail(&rel->head, &sw_context->res_relocations);
 
 	return 0;
 }
···
 /**
  * vmw_resource_relocations_free - Free all relocations on a list
  *
- * @list: Pointer to the head of the relocation list.
+ * @list: Pointer to the head of the relocation list
  */
 static void vmw_resource_relocations_free(struct list_head *list)
 {
-	struct vmw_resource_relocation *rel, *n;
+	/* Memory is validation context memory, so no need to free it */
 
-	list_for_each_entry_safe(rel, n, list, head) {
-		list_del(&rel->head);
-		kfree(rel);
-	}
+	INIT_LIST_HEAD(list);
 }
 
 /**
···
 }
 
 /**
- * vmw_bo_to_validate_list - add a bo to a validate list
- *
- * @sw_context: The software context used for this command submission batch.
- * @bo: The buffer object to add.
- * @validate_as_mob: Validate this buffer as a MOB.
- * @p_val_node: If non-NULL Will be updated with the validate node number
- * on return.
- *
- * Returns -EINVAL if the limit of number of buffer objects per command
- * submission is reached.
- */
-static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
-				   struct vmw_buffer_object *vbo,
-				   bool validate_as_mob,
-				   uint32_t *p_val_node)
-{
-	uint32_t val_node;
-	struct vmw_validate_buffer *vval_buf;
-	struct ttm_validate_buffer *val_buf;
-	struct drm_hash_item *hash;
-	int ret;
-
-	if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) vbo,
-				    &hash) == 0)) {
-		vval_buf = container_of(hash, struct vmw_validate_buffer,
-					hash);
-		if (unlikely(vval_buf->validate_as_mob != validate_as_mob)) {
-			DRM_ERROR("Inconsistent buffer usage.\n");
-			return -EINVAL;
-		}
-		val_buf = &vval_buf->base;
-		val_node = vval_buf - sw_context->val_bufs;
-	} else {
-		val_node = sw_context->cur_val_buf;
-		if (unlikely(val_node >= VMWGFX_MAX_VALIDATIONS)) {
-			DRM_ERROR("Max number of DMA buffers per submission "
-				  "exceeded.\n");
-			return -EINVAL;
-		}
-		vval_buf = &sw_context->val_bufs[val_node];
-		vval_buf->hash.key = (unsigned long) vbo;
-		ret = drm_ht_insert_item(&sw_context->res_ht, &vval_buf->hash);
-		if (unlikely(ret != 0)) {
-			DRM_ERROR("Failed to initialize a buffer validation "
-				  "entry.\n");
-			return ret;
-		}
-		++sw_context->cur_val_buf;
-		val_buf = &vval_buf->base;
-		val_buf->bo = ttm_bo_reference(&vbo->base);
-		val_buf->shared = false;
-		list_add_tail(&val_buf->head, &sw_context->validate_nodes);
-		vval_buf->validate_as_mob = validate_as_mob;
-	}
-
-	if (p_val_node)
-		*p_val_node = val_node;
-
-	return 0;
-}
-
-/**
  * vmw_resources_reserve - Reserve all resources on the sw_context's
  * resource list.
  *
···
  */
 static int vmw_resources_reserve(struct vmw_sw_context *sw_context)
 {
-	struct vmw_resource_val_node *val;
-	int ret = 0;
+	int ret;
 
-	list_for_each_entry(val, &sw_context->resource_list, head) {
-		struct vmw_resource *res = val->res;
-
-		ret = vmw_resource_reserve(res, true, val->no_buffer_needed);
-		if (unlikely(ret != 0))
-			return ret;
-
-		if (res->backup) {
-			struct vmw_buffer_object *vbo = res->backup;
-
-			ret = vmw_bo_to_validate_list
-				(sw_context, vbo,
-				 vmw_resource_needs_backup(res), NULL);
-
-			if (unlikely(ret != 0))
-				return ret;
-		}
-	}
+	ret = vmw_validation_res_reserve(sw_context->ctx, true);
+	if (ret)
+		return ret;
 
 	if (sw_context->dx_query_mob) {
 		struct vmw_buffer_object *expected_dx_query_mob;
···
 
 	return ret;
 }
-
-/**
- * vmw_resources_validate - Validate all resources on the sw_context's
- * resource list.
- *
- * @sw_context: Pointer to the software context.
- *
- * Before this function is called, all resource backup buffers must have
- * been validated.
- */
-static int vmw_resources_validate(struct vmw_sw_context *sw_context)
-{
-	struct vmw_resource_val_node *val;
-	int ret;
-
-	list_for_each_entry(val, &sw_context->resource_list, head) {
-		struct vmw_resource *res = val->res;
-		struct vmw_buffer_object *backup = res->backup;
-
-		ret = vmw_resource_validate(res);
-		if (unlikely(ret != 0)) {
-			if (ret != -ERESTARTSYS)
-				DRM_ERROR("Failed to validate resource.\n");
-			return ret;
-		}
-
-		/* Check if the resource switched backup buffer */
-		if (backup && res->backup && (backup != res->backup)) {
-			struct vmw_buffer_object *vbo = res->backup;
-
-			ret = vmw_bo_to_validate_list
-				(sw_context, vbo,
-				 vmw_resource_needs_backup(res), NULL);
-			if (ret) {
-				ttm_bo_unreserve(&vbo->base);
-				return ret;
-			}
-		}
-	}
-	return 0;
-}
-
-/**
- * vmw_cmd_res_reloc_add - Add a resource to a software context's
- * relocation- and validation lists.
- *
- * @dev_priv: Pointer to a struct vmw_private identifying the device.
- * @sw_context: Pointer to the software context.
- * @id_loc: Pointer to where the id that needs translation is located.
- * @res: Valid pointer to a struct vmw_resource.
- * @p_val: If non null, a pointer to the struct vmw_resource_validate_node
- * used for this resource is returned here.
- */
-static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv,
-				 struct vmw_sw_context *sw_context,
-				 uint32_t *id_loc,
-				 struct vmw_resource *res,
-				 struct vmw_resource_val_node **p_val)
-{
-	int ret;
-	struct vmw_resource_val_node *node;
-
-	*p_val = NULL;
-	ret = vmw_resource_relocation_add(&sw_context->res_relocations,
-					  res,
-					  vmw_ptr_diff(sw_context->buf_start,
-						       id_loc),
-					  vmw_res_rel_normal);
-	if (unlikely(ret != 0))
-		return ret;
-
-	ret = vmw_resource_val_add(sw_context, res, &node);
-	if (unlikely(ret != 0))
-		return ret;
-
-	if (p_val)
-		*p_val = node;
-
-	return 0;
-}
-
 
 /**
  * vmw_cmd_res_check - Check that a resource is present and if so, put it
···
 		  enum vmw_res_type res_type,
 		  const struct vmw_user_resource_conv *converter,
 		  uint32_t *id_loc,
-		  struct vmw_resource_val_node **p_val)
+		  struct vmw_resource **p_res)
 {
-	struct vmw_res_cache_entry *rcache =
-		&sw_context->res_cache[res_type];
+	struct vmw_res_cache_entry *rcache = &sw_context->res_cache[res_type];
 	struct vmw_resource *res;
-	struct vmw_resource_val_node *node;
 	int ret;
 
+	if (p_res)
+		*p_res = NULL;
+
 	if (*id_loc == SVGA3D_INVALID_ID) {
-		if (p_val)
-			*p_val = NULL;
 		if (res_type == vmw_res_context) {
 			DRM_ERROR("Illegal context invalid id.\n");
 			return -EINVAL;
···
 		return 0;
 	}
 
-	/*
-	 * Fastpath in case of repeated commands referencing the same
-	 * resource
-	 */
+	if (likely(rcache->valid_handle && *id_loc == rcache->handle)) {
+		res = rcache->res;
+	} else {
+		unsigned int size = vmw_execbuf_res_size(dev_priv, res_type);
 
-	if (likely(rcache->valid && *id_loc == rcache->handle)) {
-		const struct vmw_resource *res = rcache->res;
+		ret = vmw_validation_preload_res(sw_context->ctx, size);
+		if (ret)
+			return ret;
 
-		rcache->node->first_usage = false;
-		if (p_val)
-			*p_val = rcache->node;
+		res = vmw_user_resource_noref_lookup_handle
+			(dev_priv, sw_context->fp->tfile, *id_loc, converter);
+		if (unlikely(IS_ERR(res))) {
+			DRM_ERROR("Could not find or use resource 0x%08x.\n",
+				  (unsigned int) *id_loc);
+			return PTR_ERR(res);
+		}
 
-		return vmw_resource_relocation_add
-			(&sw_context->res_relocations, res,
-			 vmw_ptr_diff(sw_context->buf_start, id_loc),
-			 vmw_res_rel_normal);
+		ret = vmw_execbuf_res_noref_val_add(sw_context, res);
+		if (unlikely(ret != 0))
+			return ret;
+
+		if (rcache->valid && rcache->res == res) {
+			rcache->valid_handle = true;
+			rcache->handle = *id_loc;
+		}
 	}
 
-	ret = vmw_user_resource_lookup_handle(dev_priv,
-					      sw_context->fp->tfile,
-					      *id_loc,
-					      converter,
-					      &res);
-	if (unlikely(ret != 0)) {
-		DRM_ERROR("Could not find or use resource 0x%08x.\n",
-			  (unsigned) *id_loc);
-		dump_stack();
-		return ret;
-	}
+	ret = vmw_resource_relocation_add(sw_context, res,
+					  vmw_ptr_diff(sw_context->buf_start,
+						       id_loc),
+					  vmw_res_rel_normal);
+	if (p_res)
+		*p_res = res;
 
-	rcache->valid = true;
-	rcache->res = res;
-	rcache->handle = *id_loc;
-
-	ret = vmw_cmd_res_reloc_add(dev_priv, sw_context, id_loc,
-				    res, &node);
-	if (unlikely(ret != 0))
-		goto out_no_reloc;
-
-	rcache->node = node;
-	if (p_val)
-		*p_val = node;
-	vmw_resource_unreference(&res);
 	return 0;
-
-out_no_reloc:
-	BUG_ON(sw_context->error_resource != NULL);
-	sw_context->error_resource = res;
-
-	return ret;
 }
 
 /**
···
  */
 static int vmw_rebind_contexts(struct vmw_sw_context *sw_context)
 {
-	struct vmw_resource_val_node *val;
+	struct vmw_ctx_validation_info *val;
 	int ret;
 
-	list_for_each_entry(val, &sw_context->resource_list, head) {
-		if (unlikely(!val->staged_bindings))
-			break;
-
-		ret = vmw_binding_rebind_all
-			(vmw_context_binding_state(val->res));
+	list_for_each_entry(val, &sw_context->ctx_list, head) {
+		ret = vmw_binding_rebind_all(val->cur);
 		if (unlikely(ret != 0)) {
 			if (ret != -ERESTARTSYS)
 				DRM_ERROR("Failed to rebind context.\n");
 			return ret;
 		}
 
-		ret = vmw_rebind_all_dx_query(val->res);
+		ret = vmw_rebind_all_dx_query(val->ctx);
 		if (ret != 0)
 			return ret;
 	}
···
 				 uint32 view_ids[], u32 num_views,
 				 u32 first_slot)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
-	struct vmw_cmdbuf_res_manager *man;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	u32 i;
-	int ret;
 
 	if (!ctx_node) {
 		DRM_ERROR("DX Context not set.\n");
 		return -EINVAL;
 	}
 
-	man = sw_context->man;
 	for (i = 0; i < num_views; ++i) {
 		struct vmw_ctx_bindinfo_view binding;
 		struct vmw_resource *view = NULL;
 
 		if (view_ids[i] != SVGA3D_INVALID_ID) {
-			view = vmw_view_lookup(man, view_type, view_ids[i]);
+			view = vmw_view_id_val_add(sw_context, view_type,
+						   view_ids[i]);
 			if (IS_ERR(view)) {
 				DRM_ERROR("View not found.\n");
 				return PTR_ERR(view);
 			}
-
-			ret = vmw_view_res_val_add(sw_context, view);
-			if (ret) {
-				DRM_ERROR("Could not add view to "
-					  "validation list.\n");
-				vmw_resource_unreference(&view);
-				return ret;
-			}
 		}
-		binding.bi.ctx = ctx_node->res;
+		binding.bi.ctx = ctx_node->ctx;
 		binding.bi.res = view;
 		binding.bi.bt = binding_type;
 		binding.shader_slot = shader_slot;
 		binding.slot = first_slot + i;
-		vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+		vmw_binding_add(ctx_node->staged, &binding.bi,
 				shader_slot, binding.slot);
-		if (view)
-			vmw_resource_unreference(&view);
 	}
 
 	return 0;
···
 				 user_context_converter, &cmd->cid, NULL);
 }
 
+/**
+ * vmw_execbuf_info_from_res - Get the private validation metadata for a
+ * recently validated resource
+ * @sw_context: Pointer to the command submission context
+ * @res: The resource
+ *
+ * The resource pointed to by @res needs to be present in the command submission
+ * context's resource cache and hence the last resource of that type to be
+ * processed by the validation code.
+ *
+ * Return: a pointer to the private metadata of the resource, or NULL
+ * if it wasn't found
+ */
+static struct vmw_ctx_validation_info *
+vmw_execbuf_info_from_res(struct vmw_sw_context *sw_context,
+			  struct vmw_resource *res)
+{
+	struct vmw_res_cache_entry *rcache =
+		&sw_context->res_cache[vmw_res_type(res)];
+
+	if (rcache->valid && rcache->res == res)
+		return rcache->private;
+
+	WARN_ON_ONCE(true);
+	return NULL;
+}
+
+
 static int vmw_cmd_set_render_target_check(struct vmw_private *dev_priv,
 					   struct vmw_sw_context *sw_context,
 					   SVGA3dCmdHeader *header)
···
 		SVGA3dCmdHeader header;
 		SVGA3dCmdSetRenderTarget body;
 	} *cmd;
-	struct vmw_resource_val_node *ctx_node;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *ctx;
+	struct vmw_resource *res;
 	int ret;
 
 	cmd = container_of(header, struct vmw_sid_cmd, header);
···
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 				user_context_converter, &cmd->body.cid,
-				&ctx_node);
+				&ctx);
 	if (unlikely(ret != 0))
 		return ret;
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
-				user_surface_converter,
-				&cmd->body.target.sid, &res_node);
-	if (unlikely(ret != 0))
+				user_surface_converter, &cmd->body.target.sid,
+				&res);
+	if (unlikely(ret))
 		return ret;
 
 	if (dev_priv->has_mob) {
 		struct vmw_ctx_bindinfo_view binding;
+		struct vmw_ctx_validation_info *node;
 
-		binding.bi.ctx = ctx_node->res;
-		binding.bi.res = res_node ? res_node->res : NULL;
+		node = vmw_execbuf_info_from_res(sw_context, ctx);
+		if (!node)
+			return -EINVAL;
+
+		binding.bi.ctx = ctx;
+		binding.bi.res = res;
 		binding.bi.bt = vmw_ctx_binding_rt;
 		binding.slot = cmd->body.type;
-		vmw_binding_add(ctx_node->staged_bindings,
-				&binding.bi, 0, binding.slot);
+		vmw_binding_add(node->staged, &binding.bi, 0, binding.slot);
 	}
 
 	return 0;
···
 	cmd = container_of(header, struct vmw_sid_cmd, header);
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
-				user_surface_converter,
-				&cmd->body.src.sid, NULL);
+					  user_surface_converter,
+					  &cmd->body.src.sid, NULL);
 	if (ret)
 		return ret;
 
···
 
 		if (unlikely(sw_context->cur_query_bo != NULL)) {
 			sw_context->needs_post_query_barrier = true;
-			ret = vmw_bo_to_validate_list(sw_context,
-						      sw_context->cur_query_bo,
-						      dev_priv->has_mob, NULL);
+			ret = vmw_validation_add_bo(sw_context->ctx,
+						    sw_context->cur_query_bo,
+						    dev_priv->has_mob, false);
 			if (unlikely(ret != 0))
 				return ret;
 		}
 		sw_context->cur_query_bo = new_query_bo;
 
-		ret = vmw_bo_to_validate_list(sw_context,
-					      dev_priv->dummy_query_bo,
-					      dev_priv->has_mob, NULL);
+		ret = vmw_validation_add_bo(sw_context->ctx,
+					    dev_priv->dummy_query_bo,
+					    dev_priv->has_mob, false);
 		if (unlikely(ret != 0))
 			return ret;
 
···
  * @sw_context: The software context used for this command batch validation.
  * @id: Pointer to the user-space handle to be translated.
  * @vmw_bo_p: Points to a location that, on successful return will carry
- * a reference-counted pointer to the DMA buffer identified by the
+ * a non-reference-counted pointer to the buffer object identified by the
  * user-space handle in @id.
  *
  * This function saves information needed to translate a user-space buffer
···
 				 SVGAMobId *id,
 				 struct vmw_buffer_object **vmw_bo_p)
 {
-	struct vmw_buffer_object *vmw_bo = NULL;
+	struct vmw_buffer_object *vmw_bo;
 	uint32_t handle = *id;
 	struct vmw_relocation *reloc;
 	int ret;
 
-	ret = vmw_user_bo_lookup(sw_context->fp->tfile, handle, &vmw_bo, NULL);
-	if (unlikely(ret != 0)) {
+	vmw_validation_preload_bo(sw_context->ctx);
+	vmw_bo = vmw_user_bo_noref_lookup(sw_context->fp->tfile, handle);
+	if (IS_ERR(vmw_bo)) {
 		DRM_ERROR("Could not find or use MOB buffer.\n");
-		ret = -EINVAL;
-		goto out_no_reloc;
+		return PTR_ERR(vmw_bo);
 	}
 
-	if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
-		DRM_ERROR("Max number relocations per submission"
-			  " exceeded\n");
-		ret = -EINVAL;
-		goto out_no_reloc;
-	}
-
-	reloc = &sw_context->relocs[sw_context->cur_reloc++];
-	reloc->mob_loc = id;
-	reloc->location = NULL;
-
-	ret = vmw_bo_to_validate_list(sw_context, vmw_bo, true, &reloc->index);
+	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, true, false);
+	vmw_user_bo_noref_release();
 	if (unlikely(ret != 0))
-		goto out_no_reloc;
+		return ret;
+
+	reloc = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*reloc));
+	if (!reloc)
+		return -ENOMEM;
+
+	reloc->mob_loc = id;
+	reloc->vbo = vmw_bo;
 
 	*vmw_bo_p = vmw_bo;
-	return 0;
+	list_add_tail(&reloc->head, &sw_context->bo_relocations);
 
-out_no_reloc:
-	vmw_bo_unreference(&vmw_bo);
-	*vmw_bo_p = NULL;
-	return ret;
+	return 0;
 }
 
 /**
···
  * @sw_context: The software context used for this command batch validation.
  * @ptr: Pointer to the user-space handle to be translated.
  * @vmw_bo_p: Points to a location that, on successful return will carry
- * a reference-counted pointer to the DMA buffer identified by the
+ * a non-reference-counted pointer to the DMA buffer identified by the
  * user-space handle in @id.
  *
  * This function saves information needed to translate a user-space buffer
···
 				   SVGAGuestPtr *ptr,
 				   struct vmw_buffer_object **vmw_bo_p)
 {
-	struct vmw_buffer_object *vmw_bo = NULL;
+	struct vmw_buffer_object *vmw_bo;
 	uint32_t handle = ptr->gmrId;
 	struct vmw_relocation *reloc;
 	int ret;
 
-	ret = vmw_user_bo_lookup(sw_context->fp->tfile, handle, &vmw_bo, NULL);
-	if (unlikely(ret != 0)) {
+	vmw_validation_preload_bo(sw_context->ctx);
+	vmw_bo = vmw_user_bo_noref_lookup(sw_context->fp->tfile, handle);
+	if (IS_ERR(vmw_bo)) {
 		DRM_ERROR("Could not find or use GMR region.\n");
-		ret = -EINVAL;
-		goto out_no_reloc;
+		return PTR_ERR(vmw_bo);
 	}
 
-	if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
-		DRM_ERROR("Max number relocations per submission"
-			  " exceeded\n");
-		ret = -EINVAL;
-		goto out_no_reloc;
-	}
-
-	reloc = &sw_context->relocs[sw_context->cur_reloc++];
-	reloc->location = ptr;
-
-	ret = vmw_bo_to_validate_list(sw_context, vmw_bo, false, &reloc->index);
+	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, false, false);
+	vmw_user_bo_noref_release();
 	if (unlikely(ret != 0))
-		goto out_no_reloc;
+		return ret;
 
+	reloc = vmw_validation_mem_alloc(sw_context->ctx, sizeof(*reloc));
+	if (!reloc)
+		return -ENOMEM;
+
+	reloc->location = ptr;
+	reloc->vbo = vmw_bo;
 	*vmw_bo_p = vmw_bo;
-	return 0;
+	list_add_tail(&reloc->head, &sw_context->bo_relocations);
 
-out_no_reloc:
-	vmw_bo_unreference(&vmw_bo);
-	*vmw_bo_p = NULL;
-	return ret;
+	return 0;
 }
 
 
···
 	} *cmd;
 
 	int    ret;
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_resource *cotable_res;
 
 
···
 	    cmd->q.type >= SVGA3D_QUERYTYPE_MAX)
 		return -EINVAL;
 
-	cotable_res = vmw_context_cotable(ctx_node->res, SVGA_COTABLE_DXQUERY);
+	cotable_res = vmw_context_cotable(ctx_node->ctx, SVGA_COTABLE_DXQUERY);
 	ret = vmw_cotable_notify(cotable_res, cmd->q.queryId);
-	vmw_resource_unreference(&cotable_res);
 
 	return ret;
 }
···
 		return ret;
 
 	sw_context->dx_query_mob = vmw_bo;
-	sw_context->dx_query_ctx = sw_context->dx_ctx_node->res;
-
-	vmw_bo_unreference(&vmw_bo);
-
-	return ret;
+	sw_context->dx_query_ctx = sw_context->dx_ctx_node->ctx;
+	return 0;
 }
 
 
···
 
 	ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
 
-	vmw_bo_unreference(&vmw_bo);
 	return ret;
 }
 
···
 
 	ret = vmw_query_bo_switch_prepare(dev_priv, vmw_bo, sw_context);
 
-	vmw_bo_unreference(&vmw_bo);
 	return ret;
 }
 
···
 	if (unlikely(ret != 0))
 		return ret;
 
-	vmw_bo_unreference(&vmw_bo);
 	return 0;
 }
 
···
 	if (unlikely(ret != 0))
 		return ret;
 
-	vmw_bo_unreference(&vmw_bo);
 	return 0;
 }
 
···
 	if (unlikely(ret != 0)) {
 		if (unlikely(ret != -ERESTARTSYS))
 			DRM_ERROR("could not find surface for DMA.\n");
-		goto out_no_surface;
+		return ret;
 	}
 
 	srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res);
···
 	vmw_kms_cursor_snoop(srf, sw_context->fp->tfile, &vmw_bo->base,
 			     header);
 
-out_no_surface:
-	vmw_bo_unreference(&vmw_bo);
-	return ret;
+	return 0;
 }
 
 static int vmw_cmd_draw(struct vmw_private *dev_priv,
···
 	  ((unsigned long) header + header->size + sizeof(header));
 	SVGA3dTextureState *cur_state = (SVGA3dTextureState *)
 		((unsigned long) header + sizeof(struct vmw_tex_state_cmd));
-	struct vmw_resource_val_node *ctx_node;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *ctx;
+	struct vmw_resource *res;
 	int ret;
 
 	cmd = container_of(header, struct vmw_tex_state_cmd,
···
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 				user_context_converter, &cmd->state.cid,
-				&ctx_node);
+				&ctx);
 	if (unlikely(ret != 0))
 		return ret;
 
···
 
 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 					user_surface_converter,
-					&cur_state->value, &res_node);
+					&cur_state->value, &res);
 		if (unlikely(ret != 0))
 			return ret;
 
 		if (dev_priv->has_mob) {
 			struct vmw_ctx_bindinfo_tex binding;
+			struct vmw_ctx_validation_info *node;
 
-			binding.bi.ctx = ctx_node->res;
-			binding.bi.res = res_node ? res_node->res : NULL;
+			node = vmw_execbuf_info_from_res(sw_context, ctx);
+			if (!node)
+				return -EINVAL;
+
+			binding.bi.ctx = ctx;
+			binding.bi.res = res;
 			binding.bi.bt = vmw_ctx_binding_tex;
 			binding.texture_stage = cur_state->stage;
-			vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
-					0, binding.texture_stage);
+			vmw_binding_add(node->staged, &binding.bi, 0,
+					binding.texture_stage);
 		}
 	}
 
···
 		SVGAFifoCmdDefineGMRFB body;
 	} *cmd = buf;
 
-	ret = vmw_translate_guest_ptr(dev_priv, sw_context,
-				      &cmd->body.ptr,
-				      &vmw_bo);
-	if (unlikely(ret != 0))
-		return ret;
-
-	vmw_bo_unreference(&vmw_bo);
-
+	return vmw_translate_guest_ptr(dev_priv, sw_context,
+				       &cmd->body.ptr,
+				       &vmw_bo);
 	return ret;
 }
 
···
  */
 static int vmw_cmd_res_switch_backup(struct vmw_private *dev_priv,
 				     struct vmw_sw_context *sw_context,
-				     struct vmw_resource_val_node *val_node,
+				     struct vmw_resource *res,
 				     uint32_t *buf_id,
 				     unsigned long backup_offset)
 {
-	struct vmw_buffer_object *dma_buf;
+	struct vmw_buffer_object *vbo;
+	void *info;
 	int ret;
 
-	ret = vmw_translate_mob_ptr(dev_priv, sw_context, buf_id, &dma_buf);
+	info = vmw_execbuf_info_from_res(sw_context, res);
+	if (!info)
+		return -EINVAL;
+
+	ret = vmw_translate_mob_ptr(dev_priv, sw_context, buf_id, &vbo);
 	if (ret)
 		return ret;
 
-	val_node->switching_backup = true;
-	if (val_node->first_usage)
-		val_node->no_buffer_needed = true;
-
-	vmw_bo_unreference(&val_node->new_backup);
-	val_node->new_backup = dma_buf;
-	val_node->new_backup_offset = backup_offset;
-
+	vmw_validation_res_switch_backup(sw_context->ctx, info, vbo,
+					 backup_offset);
 	return 0;
 }
 
···
 				 uint32_t *buf_id,
 				 unsigned long backup_offset)
 {
-	struct vmw_resource_val_node *val_node;
+	struct vmw_resource *res;
 	int ret;
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, res_type,
-				converter, res_id, &val_node);
+				converter, res_id, &res);
 	if (ret)
 		return ret;
 
-	return vmw_cmd_res_switch_backup(dev_priv, sw_context, val_node,
+	return vmw_cmd_res_switch_backup(dev_priv, sw_context, res,
 					 buf_id, backup_offset);
 }
 
···
 	} *cmd;
 	int ret;
 	size_t size;
-	struct vmw_resource_val_node *val;
+	struct vmw_resource *ctx;
 
 	cmd = container_of(header, struct vmw_shader_define_cmd,
 			   header);
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 				user_context_converter, &cmd->body.cid,
-				&val);
+				&ctx);
 	if (unlikely(ret != 0))
 		return ret;
 
···
 
 	size = cmd->header.size - sizeof(cmd->body);
 	ret = vmw_compat_shader_add(dev_priv,
-				    vmw_context_res_man(val->res),
+				    vmw_context_res_man(ctx),
 				    cmd->body.shid, cmd + 1,
 				    cmd->body.type, size,
 				    &sw_context->staged_cmd_res);
 	if (unlikely(ret != 0))
 		return ret;
 
-	return vmw_resource_relocation_add(&sw_context->res_relocations,
+	return vmw_resource_relocation_add(sw_context,
 					   NULL,
 					   vmw_ptr_diff(sw_context->buf_start,
 							&cmd->header.id),
···
 		SVGA3dCmdDestroyShader body;
 	} *cmd;
 	int ret;
-	struct vmw_resource_val_node *val;
+	struct vmw_resource *ctx;
 
 	cmd = container_of(header, struct vmw_shader_destroy_cmd,
 			   header);
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 				user_context_converter, &cmd->body.cid,
-				&val);
+				&ctx);
 	if (unlikely(ret != 0))
 		return ret;
 
 	if (unlikely(!dev_priv->has_mob))
 		return 0;
 
-	ret = vmw_shader_remove(vmw_context_res_man(val->res),
+	ret = vmw_shader_remove(vmw_context_res_man(ctx),
 				cmd->body.shid,
 				cmd->body.type,
 				&sw_context->staged_cmd_res);
 	if (unlikely(ret != 0))
 		return ret;
 
-	return vmw_resource_relocation_add(&sw_context->res_relocations,
+	return vmw_resource_relocation_add(sw_context,
 					   NULL,
 					   vmw_ptr_diff(sw_context->buf_start,
 							&cmd->header.id),
···
 		SVGA3dCmdHeader header;
 		SVGA3dCmdSetShader body;
 	} *cmd;
-	struct vmw_resource_val_node *ctx_node, *res_node = NULL;
 	struct vmw_ctx_bindinfo_shader binding;
-	struct vmw_resource *res = NULL;
+	struct vmw_resource *ctx, *res = NULL;
+	struct vmw_ctx_validation_info *ctx_info;
 	int ret;
 
 	cmd = container_of(header, struct vmw_set_shader_cmd,
···
 
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 				user_context_converter, &cmd->body.cid,
-				&ctx_node);
+				&ctx);
 	if (unlikely(ret != 0))
 		return ret;
 
···
 		return 0;
 
 	if (cmd->body.shid != SVGA3D_INVALID_ID) {
-		res = vmw_shader_lookup(vmw_context_res_man(ctx_node->res),
+		res = vmw_shader_lookup(vmw_context_res_man(ctx),
 					cmd->body.shid,
 					cmd->body.type);
 
 		if (!IS_ERR(res)) {
-			ret = vmw_cmd_res_reloc_add(dev_priv, sw_context,
-						    &cmd->body.shid, res,
-						    &res_node);
-			vmw_resource_unreference(&res);
+			ret = vmw_execbuf_res_noctx_val_add(sw_context, res);
 			if (unlikely(ret != 0))
 				return ret;
 		}
 	}
 
-	if (!res_node) {
+	if (IS_ERR_OR_NULL(res)) {
 		ret = vmw_cmd_res_check(dev_priv, sw_context,
 					vmw_res_shader,
 					user_shader_converter,
-					&cmd->body.shid, &res_node);
+					&cmd->body.shid, &res);
 		if (unlikely(ret != 0))
 			return ret;
 	}
 
-	binding.bi.ctx = ctx_node->res;
-	binding.bi.res = res_node ? res_node->res : NULL;
+	ctx_info = vmw_execbuf_info_from_res(sw_context, ctx);
+	if (!ctx_info)
+		return -EINVAL;
+
+	binding.bi.ctx = ctx;
+	binding.bi.res = res;
 	binding.bi.bt = vmw_ctx_binding_shader;
 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
-	vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+	vmw_binding_add(ctx_info->staged, &binding.bi,
 			binding.shader_slot, 0);
 	return 0;
 }
···
 		SVGA3dCmdHeader header;
 		SVGA3dCmdDXSetSingleConstantBuffer body;
 	} *cmd;
-	struct vmw_resource_val_node *res_node = NULL;
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_resource *res = NULL;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_ctx_bindinfo_cb binding;
 	int ret;
 
···
 	cmd = container_of(header, typeof(*cmd), header);
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 				user_surface_converter,
-				&cmd->body.sid, &res_node);
+				&cmd->body.sid, &res);
 	if (unlikely(ret != 0))
 		return ret;
 
-	binding.bi.ctx = ctx_node->res;
-	binding.bi.res = res_node ? res_node->res : NULL;
+	binding.bi.ctx = ctx_node->ctx;
+	binding.bi.res = res;
 	binding.bi.bt = vmw_ctx_binding_cb;
 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
 	binding.offset = cmd->body.offsetInBytes;
···
 		return -EINVAL;
 	}
 
-	vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+	vmw_binding_add(ctx_node->staged, &binding.bi,
 			binding.shader_slot, binding.slot);
 
 	return 0;
···
 		SVGA3dCmdDXSetShader body;
 	} *cmd;
 	struct vmw_resource *res = NULL;
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_ctx_bindinfo_shader binding;
 	int ret = 0;
 
···
 			return PTR_ERR(res);
 		}
 
-		ret = vmw_resource_val_add(sw_context, res, NULL);
+		ret = vmw_execbuf_res_noctx_val_add(sw_context, res);
 		if (ret)
-			goto out_unref;
+			return ret;
 	}
 
-	binding.bi.ctx = ctx_node->res;
+	binding.bi.ctx = ctx_node->ctx;
 	binding.bi.res = res;
 	binding.bi.bt = vmw_ctx_binding_dx_shader;
 	binding.shader_slot = cmd->body.type - SVGA3D_SHADERTYPE_MIN;
 
-	vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+	vmw_binding_add(ctx_node->staged, &binding.bi,
 			binding.shader_slot, 0);
-out_unref:
-	if (res)
-		vmw_resource_unreference(&res);
 
-	return ret;
+	return 0;
 }
 
 /**
···
 					 struct vmw_sw_context *sw_context,
 					 SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_ctx_bindinfo_vb binding;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *res;
 	struct {
 		SVGA3dCmdHeader header;
 		SVGA3dCmdDXSetVertexBuffers body;
···
 	for (i = 0; i < num; i++) {
 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 					user_surface_converter,
-					&cmd->buf[i].sid, &res_node);
+					&cmd->buf[i].sid, &res);
 		if (unlikely(ret != 0))
 			return ret;
 
-		binding.bi.ctx = ctx_node->res;
+		binding.bi.ctx = ctx_node->ctx;
 		binding.bi.bt = vmw_ctx_binding_vb;
-		binding.bi.res = ((res_node) ? res_node->res : NULL);
+		binding.bi.res = res;
 		binding.offset = cmd->buf[i].offset;
 		binding.stride = cmd->buf[i].stride;
 		binding.slot = i + cmd->body.startBuffer;
 
-		vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+		vmw_binding_add(ctx_node->staged, &binding.bi,
 				0, binding.slot);
 	}
 
···
 				       struct vmw_sw_context *sw_context,
 				       SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_ctx_bindinfo_ib binding;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *res;
 	struct {
 		SVGA3dCmdHeader header;
 		SVGA3dCmdDXSetIndexBuffer body;
···
 	cmd = container_of(header, typeof(*cmd), header);
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 				user_surface_converter,
-				&cmd->body.sid, &res_node);
+				&cmd->body.sid, &res);
 	if (unlikely(ret != 0))
 		return ret;
 
-	binding.bi.ctx = ctx_node->res;
-	binding.bi.res = ((res_node) ? res_node->res : NULL);
+	binding.bi.ctx = ctx_node->ctx;
+	binding.bi.res = res;
 	binding.bi.bt = vmw_ctx_binding_ib;
 	binding.offset = cmd->body.offset;
 	binding.format = cmd->body.format;
 
-	vmw_binding_add(ctx_node->staged_bindings, &binding.bi, 0, 0);
+	vmw_binding_add(ctx_node->staged, &binding.bi, 0, 0);
 
 	return 0;
 }
···
 		SVGA3dCmdDXClearRenderTargetView body;
 	} *cmd = container_of(header, typeof(*cmd), header);
 
-	return vmw_view_id_val_add(sw_context, vmw_view_rt,
-				   cmd->body.renderTargetViewId);
+	return PTR_RET(vmw_view_id_val_add(sw_context, vmw_view_rt,
+					   cmd->body.renderTargetViewId));
 }
 
 /**
···
 		SVGA3dCmdDXClearDepthStencilView body;
 	} *cmd = container_of(header, typeof(*cmd), header);
 
-	return vmw_view_id_val_add(sw_context, vmw_view_ds,
-				   cmd->body.depthStencilViewId);
+	return PTR_RET(vmw_view_id_val_add(sw_context, vmw_view_ds,
+					   cmd->body.depthStencilViewId));
 }
 
 static int vmw_cmd_dx_view_define(struct vmw_private *dev_priv,
 				  struct vmw_sw_context *sw_context,
 				  SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
-	struct vmw_resource_val_node *srf_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_resource *srf;
 	struct vmw_resource *res;
 	enum vmw_view_type view_type;
 	int ret;
···
 	cmd = container_of(header, typeof(*cmd), header);
 	ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 				user_surface_converter,
-				&cmd->sid, &srf_node);
+				&cmd->sid, &srf);
 	if (unlikely(ret != 0))
 		return ret;
 
-	res = vmw_context_cotable(ctx_node->res, vmw_view_cotables[view_type]);
+	res = vmw_context_cotable(ctx_node->ctx, vmw_view_cotables[view_type]);
 	ret = vmw_cotable_notify(res, cmd->defined_id);
-	vmw_resource_unreference(&res);
 	if (unlikely(ret != 0))
 		return ret;
 
 	return vmw_view_add(sw_context->man,
-			    ctx_node->res,
-			    srf_node->res,
+			    ctx_node->ctx,
+			    srf,
 			    view_type,
 			    cmd->defined_id,
 			    header,
···
 				     struct vmw_sw_context *sw_context,
 				     SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_ctx_bindinfo_so binding;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *res;
 	struct {
 		SVGA3dCmdHeader header;
 		SVGA3dCmdDXSetSOTargets body;
···
 	for (i = 0; i < num; i++) {
 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
 					user_surface_converter,
-					&cmd->targets[i].sid, &res_node);
+					&cmd->targets[i].sid, &res);
 		if (unlikely(ret != 0))
 			return ret;
 
-		binding.bi.ctx = ctx_node->res;
-		binding.bi.res = ((res_node) ? res_node->res : NULL);
+		binding.bi.ctx = ctx_node->ctx;
+		binding.bi.res = res;
 		binding.bi.bt = vmw_ctx_binding_so,
 		binding.offset = cmd->targets[i].offset;
 		binding.size = cmd->targets[i].sizeInBytes;
 		binding.slot = i;
 
-		vmw_binding_add(ctx_node->staged_bindings, &binding.bi,
+		vmw_binding_add(ctx_node->staged, &binding.bi,
 				0, binding.slot);
 	}
 
···
 				struct vmw_sw_context *sw_context,
 				SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_resource *res;
 	/*
 	 * This is based on the fact that all affected define commands have
···
 	}
 
 	so_type = vmw_so_cmd_to_type(header->id);
-	res = vmw_context_cotable(ctx_node->res, vmw_so_cotables[so_type]);
+	res = vmw_context_cotable(ctx_node->ctx, vmw_so_cotables[so_type]);
 	cmd = container_of(header, typeof(*cmd), header);
 	ret = vmw_cotable_notify(res, cmd->defined_id);
-	vmw_resource_unreference(&res);
 
 	return ret;
 }
···
 				struct vmw_sw_context *sw_context,
 				SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 
 	if (unlikely(ctx_node == NULL)) {
 		DRM_ERROR("DX Context not set.\n");
···
 				  struct vmw_sw_context *sw_context,
 				  SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct {
 		SVGA3dCmdHeader header;
 		union vmw_view_destroy body;
···
 	 * relocation to conditionally make this command a NOP to avoid
 	 * device errors.
 	 */
-	return vmw_resource_relocation_add(&sw_context->res_relocations,
+	return vmw_resource_relocation_add(sw_context,
 					   view,
 					   vmw_ptr_diff(sw_context->buf_start,
 							&cmd->header.id),
···
 				    struct vmw_sw_context *sw_context,
 				    SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct vmw_resource *res;
 	struct {
 		SVGA3dCmdHeader header;
···
 		return -EINVAL;
 	}
 
-	res = vmw_context_cotable(ctx_node->res, SVGA_COTABLE_DXSHADER);
+	res = vmw_context_cotable(ctx_node->ctx, SVGA_COTABLE_DXSHADER);
 	ret = vmw_cotable_notify(res, cmd->body.shaderId);
-	vmw_resource_unreference(&res);
 	if (ret)
 		return ret;
 
-	return vmw_dx_shader_add(sw_context->man, ctx_node->res,
+	return vmw_dx_shader_add(sw_context->man, ctx_node->ctx,
 				 cmd->body.shaderId, cmd->body.type,
 				 &sw_context->staged_cmd_res);
 }
···
 				     struct vmw_sw_context *sw_context,
 				     SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node = sw_context->dx_ctx_node;
+	struct vmw_ctx_validation_info *ctx_node = sw_context->dx_ctx_node;
 	struct {
 		SVGA3dCmdHeader header;
 		SVGA3dCmdDXDestroyShader body;
···
 				  struct vmw_sw_context *sw_context,
 				  SVGA3dCmdHeader *header)
 {
-	struct vmw_resource_val_node *ctx_node;
-	struct vmw_resource_val_node *res_node;
+	struct vmw_resource *ctx;
 	struct vmw_resource *res;
 	struct {
 		SVGA3dCmdHeader header;
···
 	if (cmd->body.cid != SVGA3D_INVALID_ID) {
 		ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
 					user_context_converter,
-					&cmd->body.cid, &ctx_node);
+					&cmd->body.cid, &ctx);
 		if (ret)
 			return ret;
 	} else {
-		ctx_node = sw_context->dx_ctx_node;
-		if (!ctx_node) {
+		if (!sw_context->dx_ctx_node) {
 			DRM_ERROR("DX Context not set.\n");
 			return -EINVAL;
 		}
+		ctx = sw_context->dx_ctx_node->ctx;
 	}
 
-	res = vmw_shader_lookup(vmw_context_res_man(ctx_node->res),
+	res = vmw_shader_lookup(vmw_context_res_man(ctx),
 				cmd->body.shid, 0);
 	if (IS_ERR(res)) {
 		DRM_ERROR("Could not find shader to bind.\n");
 		return PTR_ERR(res);
 	}
 
-	ret = vmw_resource_val_add(sw_context, res, &res_node);
+	ret = vmw_execbuf_res_noctx_val_add(sw_context, res);
 	if (ret) {
 		DRM_ERROR("Error creating resource validation node.\n");
-		goto out_unref;
+		return ret;
 	}
 
-
-	ret = vmw_cmd_res_switch_backup(dev_priv, sw_context, res_node,
-					&cmd->body.mobid,
-					cmd->body.offsetInBytes);
-out_unref:
-	vmw_resource_unreference(&res);
-
-	return ret;
+	return vmw_cmd_res_switch_backup(dev_priv, sw_context, res,
+					 &cmd->body.mobid,
+					 cmd->body.offsetInBytes);
 }
 
 /**
···
 		SVGA3dCmdDXGenMips body;
 	} *cmd = container_of(header, typeof(*cmd), header);
 
-	return vmw_view_id_val_add(sw_context, vmw_view_sr,
-				   cmd->body.shaderResourceViewId);
+	return PTR_RET(vmw_view_id_val_add(sw_context, vmw_view_sr,
+					   cmd->body.shaderResourceViewId));
 }
 
 /**
···
 
 static void vmw_free_relocations(struct vmw_sw_context *sw_context)
 {
-	sw_context->cur_reloc = 0;
+	/* Memory is validation context memory, so no need to free it */
+
+	INIT_LIST_HEAD(&sw_context->bo_relocations);
 }
 
 static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
 {
-	uint32_t i;
 	struct vmw_relocation *reloc;
-	struct ttm_validate_buffer *validate;
 	struct ttm_buffer_object *bo;
 
-	for (i = 0; i < sw_context->cur_reloc; ++i) {
-		reloc = &sw_context->relocs[i];
-		validate = &sw_context->val_bufs[reloc->index].base;
-		bo = validate->bo;
+	list_for_each_entry(reloc, &sw_context->bo_relocations, head) {
+		bo = &reloc->vbo->base;
 		switch (bo->mem.mem_type) {
 		case TTM_PL_VRAM:
 			reloc->location->offset += bo->offset;
···
 		}
 	}
 	vmw_free_relocations(sw_context);
-}
-
-/**
- * vmw_resource_list_unrefererence - Free up a resource list and unreference
- * all resources referenced by it.
- *
- * @list: The resource list.
- */
-static void vmw_resource_list_unreference(struct vmw_sw_context *sw_context,
-					  struct list_head *list)
-{
-	struct vmw_resource_val_node *val, *val_next;
-
-	/*
-	 * Drop references to resources held during command submission.
-	 */
-
-	list_for_each_entry_safe(val, val_next, list, head) {
-		list_del_init(&val->head);
-		vmw_resource_unreference(&val->res);
-
-		if (val->staged_bindings) {
-			if (val->staged_bindings != sw_context->staged_bindings)
-				vmw_binding_state_free(val->staged_bindings);
-			else
-				sw_context->staged_bindings_inuse = false;
-			val->staged_bindings = NULL;
-		}
-
-		kfree(val);
-	}
-}
-
-static void vmw_clear_validations(struct vmw_sw_context *sw_context)
-{
-	struct vmw_validate_buffer *entry, *next;
-	struct vmw_resource_val_node *val;
-
-	/*
-	 * Drop references to DMA buffers held during command submission.
-	 */
-	list_for_each_entry_safe(entry, next, &sw_context->validate_nodes,
-				 base.head) {
-		list_del(&entry->base.head);
-		ttm_bo_unref(&entry->base.bo);
-		(void) drm_ht_remove_item(&sw_context->res_ht, &entry->hash);
-		sw_context->cur_val_buf--;
-	}
-	BUG_ON(sw_context->cur_val_buf != 0);
-
-	list_for_each_entry(val, &sw_context->resource_list, head)
-		(void) drm_ht_remove_item(&sw_context->res_ht, &val->hash);
-}
-
-int vmw_validate_single_buffer(struct vmw_private *dev_priv,
-			       struct ttm_buffer_object *bo,
-			       bool interruptible,
-			       bool validate_as_mob)
-{
-	struct vmw_buffer_object *vbo =
-		container_of(bo, struct vmw_buffer_object, base);
-	struct ttm_operation_ctx ctx = { interruptible, false };
-	int ret;
-
-	if (vbo->pin_count > 0)
-		return 0;
-
-	if (validate_as_mob)
-		return ttm_bo_validate(bo, &vmw_mob_placement, &ctx);
-
-	/**
-	 * Put BO in VRAM if there is space, otherwise as a GMR.
-	 * If there is no space in VRAM and GMR ids are all used up,
-	 * start evicting GMRs to make room. If the DMA buffer can't be
-	 * used as a GMR, this will return -ENOMEM.
-	 */
-
-	ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, &ctx);
-	if (likely(ret == 0 || ret == -ERESTARTSYS))
-		return ret;
-
-	/**
-	 * If that failed, try VRAM again, this time evicting
-	 * previous contents.
-	 */
-
-	ret = ttm_bo_validate(bo, &vmw_vram_placement, &ctx);
-	return ret;
-}
-
-static int vmw_validate_buffers(struct vmw_private *dev_priv,
-				struct vmw_sw_context *sw_context)
-{
-	struct vmw_validate_buffer *entry;
-	int ret;
-
-	list_for_each_entry(entry, &sw_context->validate_nodes, base.head) {
-		ret = vmw_validate_single_buffer(dev_priv, entry->base.bo,
-						 true,
-						 entry->validate_as_mob);
-		if (unlikely(ret != 0))
-			return ret;
-	}
-	return 0;
 }
 
 static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context,
···
 
 	if (sw_context->dx_ctx_node)
 		cmd = vmw_fifo_reserve_dx(dev_priv, command_size,
-					  sw_context->dx_ctx_node->res->id);
+					  sw_context->dx_ctx_node->ctx->id);
 	else
 		cmd = vmw_fifo_reserve(dev_priv, command_size);
 	if (!cmd) {
···
 				     u32 command_size,
 				     struct vmw_sw_context *sw_context)
 {
-	u32 id = ((sw_context->dx_ctx_node) ? sw_context->dx_ctx_node->res->id :
+	u32 id = ((sw_context->dx_ctx_node) ? sw_context->dx_ctx_node->ctx->id :
 		  SVGA3D_INVALID_ID);
 	void *cmd = vmw_cmdbuf_reserve(dev_priv->cman, command_size,
 				       id, false, header);
···
 				   struct vmw_sw_context *sw_context,
 				   uint32_t handle)
 {
-	struct vmw_resource_val_node *ctx_node;
 	struct vmw_resource *res;
 	int ret;
+	unsigned int size;
 
 	if (handle == SVGA3D_INVALID_ID)
 		return 0;
 
-	ret = vmw_user_resource_lookup_handle(dev_priv, sw_context->fp->tfile,
-					      handle, user_context_converter,
-					      &res);
-	if (unlikely(ret != 0)) {
+	size = vmw_execbuf_res_size(dev_priv, vmw_res_dx_context);
+	ret = vmw_validation_preload_res(sw_context->ctx, size);
+	if (ret)
+		return ret;
+
+	res = vmw_user_resource_noref_lookup_handle
+		(dev_priv, sw_context->fp->tfile, handle,
+		 user_context_converter);
+	if (unlikely(IS_ERR(res))) {
 		DRM_ERROR("Could not find or user DX context 0x%08x.\n",
 			  (unsigned) handle);
-		return ret;
+		return PTR_ERR(res);
 	}
 
-	ret = vmw_resource_val_add(sw_context, res, &ctx_node);
+	ret = vmw_execbuf_res_noref_val_add(sw_context, res);
 	if (unlikely(ret != 0))
-		goto out_err;
+		return ret;
 
-	sw_context->dx_ctx_node = ctx_node;
+	sw_context->dx_ctx_node = vmw_execbuf_info_from_res(sw_context, res);
 	sw_context->man = vmw_context_res_man(res);
-out_err:
-	vmw_resource_unreference(&res);
-	return ret;
+
+	return 0;
 }
 
 int vmw_execbuf_process(struct drm_file *file_priv,
···
 {
 	struct vmw_sw_context *sw_context = &dev_priv->ctx;
 	struct vmw_fence_obj *fence = NULL;
-	struct vmw_resource *error_resource;
-	struct list_head resource_list;
 	struct vmw_cmdbuf_header *header;
-	struct ww_acquire_ctx ticket;
 	uint32_t handle;
 	int ret;
 	int32_t out_fence_fd = -1;
 	struct sync_file *sync_file = NULL;
-
+	DECLARE_VAL_CONTEXT(val_ctx, &sw_context->res_ht, 1);
 
 	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
 		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
···
 		sw_context->kernel = true;
 
 	sw_context->fp = vmw_fpriv(file_priv);
-	sw_context->cur_reloc = 0;
-	sw_context->cur_val_buf = 0;
-	INIT_LIST_HEAD(&sw_context->resource_list);
-	INIT_LIST_HEAD(&sw_context->ctx_resource_list);
+	INIT_LIST_HEAD(&sw_context->ctx_list);
 	sw_context->cur_query_bo = dev_priv->pinned_bo;
 	sw_context->last_query_ctx = NULL;
 	sw_context->needs_post_query_barrier = false;
···
 	sw_context->dx_query_mob = NULL;
 	sw_context->dx_query_ctx = NULL;
 	memset(sw_context->res_cache, 0, sizeof(sw_context->res_cache));
-	INIT_LIST_HEAD(&sw_context->validate_nodes);
 	INIT_LIST_HEAD(&sw_context->res_relocations);
+	INIT_LIST_HEAD(&sw_context->bo_relocations);
 	if (sw_context->staged_bindings)
 		vmw_binding_state_reset(sw_context->staged_bindings);
 
···
 		sw_context->res_ht_initialized = true;
 	}
 	INIT_LIST_HEAD(&sw_context->staged_cmd_res);
-	INIT_LIST_HEAD(&resource_list);
+	sw_context->ctx = &val_ctx;
 	ret = vmw_execbuf_tie_context(dev_priv, sw_context, dx_context_handle);
-	if (unlikely(ret != 0)) {
-		list_splice_init(&sw_context->ctx_resource_list,
-				 &sw_context->resource_list);
+	if (unlikely(ret != 0))
 		goto out_err_nores;
-	}
 
 	ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
 				command_size);
-	/*
-	 * Merge the resource lists before checking the return status
-	 * from vmd_cmd_check_all so that all the open hashtabs will
-	 * be handled properly even if vmw_cmd_check_all fails.
-	 */
-	list_splice_init(&sw_context->ctx_resource_list,
-			 &sw_context->resource_list);
-
 	if (unlikely(ret != 0))
 		goto out_err_nores;
 
···
 	if (unlikely(ret != 0))
 		goto out_err_nores;
 
-	ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes,
-				     true, NULL);
+	ret = vmw_validation_bo_reserve(&val_ctx, true);
 	if (unlikely(ret != 0))
 		goto out_err_nores;
 
-	ret = vmw_validate_buffers(dev_priv, sw_context);
+	ret = vmw_validation_bo_validate(&val_ctx, true);
 	if (unlikely(ret != 0))
 		goto out_err;
 
-	ret = vmw_resources_validate(sw_context);
+	ret = vmw_validation_res_validate(&val_ctx, true);
 	if (unlikely(ret != 0))
 		goto out_err;
+	vmw_validation_drop_ht(&val_ctx);
 
 	ret = mutex_lock_interruptible(&dev_priv->binding_mutex);
 	if (unlikely(ret != 0)) {
···
 	if (ret != 0)
 		DRM_ERROR("Fence submission error. Syncing.\n");
 
-	vmw_resources_unreserve(sw_context, false);
+	vmw_execbuf_bindings_commit(sw_context, false);
+	vmw_bind_dx_query_mob(sw_context);
+	vmw_validation_res_unreserve(&val_ctx, false);
 
-	ttm_eu_fence_buffer_objects(&ticket, &sw_context->validate_nodes,
-				    (void *) fence);
+	vmw_validation_bo_fence(sw_context->ctx, fence);
 
 	if (unlikely(dev_priv->pinned_bo != NULL &&
 		     !dev_priv->query_cid_valid))
 		__vmw_execbuf_release_pinned_bo(dev_priv, fence);
-
-	vmw_clear_validations(sw_context);
 
 	/*
 	 * If anything fails here, give up trying to export the fence
···
 		vmw_fence_obj_unreference(&fence);
 	}
 
-	list_splice_init(&sw_context->resource_list, &resource_list);
 	vmw_cmdbuf_res_commit(&sw_context->staged_cmd_res);
 	mutex_unlock(&dev_priv->cmdbuf_mutex);
 
···
 	 * Unreference resources outside of the cmdbuf_mutex to
 	 * avoid deadlocks in resource destruction paths.
 	 */
-	vmw_resource_list_unreference(sw_context, &resource_list);
+	vmw_validation_unref_lists(&val_ctx);
 
 	return 0;
 
 out_unlock_binding:
 	mutex_unlock(&dev_priv->binding_mutex);
 out_err:
-	ttm_eu_backoff_reservation(&ticket, &sw_context->validate_nodes);
+	vmw_validation_bo_backoff(&val_ctx);
 out_err_nores:
-	vmw_resources_unreserve(sw_context, true);
+	vmw_execbuf_bindings_commit(sw_context, true);
+	vmw_validation_res_unreserve(&val_ctx, true);
 	vmw_resource_relocations_free(&sw_context->res_relocations);
 	vmw_free_relocations(sw_context);
-	vmw_clear_validations(sw_context);
 	if (unlikely(dev_priv->pinned_bo != NULL &&
 		     !dev_priv->query_cid_valid))
 		__vmw_execbuf_release_pinned_bo(dev_priv, NULL);
 out_unlock:
-	list_splice_init(&sw_context->resource_list, &resource_list);
-	error_resource = sw_context->error_resource;
-	sw_context->error_resource = NULL;
 	vmw_cmdbuf_res_revert(&sw_context->staged_cmd_res);
+	vmw_validation_drop_ht(&val_ctx);
+	WARN_ON(!list_empty(&sw_context->ctx_list));
 	mutex_unlock(&dev_priv->cmdbuf_mutex);
 
 	/*
 	 * Unreference resources outside of the cmdbuf_mutex to
 	 * avoid deadlocks in resource destruction paths.
 	 */
-	vmw_resource_list_unreference(sw_context, &resource_list);
-	if (unlikely(error_resource != NULL))
-		vmw_resource_unreference(&error_resource);
+	vmw_validation_unref_lists(&val_ctx);
 out_free_header:
 	if (header)
 		vmw_cmdbuf_header_free(header);
···
 				     struct vmw_fence_obj *fence)
 {
 	int ret = 0;
-	struct list_head validate_list;
-	struct ttm_validate_buffer pinned_val, query_val;
 	struct vmw_fence_obj *lfence = NULL;
-	struct ww_acquire_ctx ticket;
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 
 	if (dev_priv->pinned_bo == NULL)
 		goto out_unlock;
 
-	INIT_LIST_HEAD(&validate_list);
-
-	pinned_val.bo = ttm_bo_reference(&dev_priv->pinned_bo->base);
-	pinned_val.shared = false;
-	list_add_tail(&pinned_val.head, &validate_list);
-
-	query_val.bo = ttm_bo_reference(&dev_priv->dummy_query_bo->base);
-	query_val.shared = false;
-	list_add_tail(&query_val.head, &validate_list);
-
-	ret = ttm_eu_reserve_buffers(&ticket, &validate_list,
-				     false, NULL);
-	if (unlikely(ret != 0)) {
-		vmw_execbuf_unpin_panic(dev_priv);
+	ret = vmw_validation_add_bo(&val_ctx, dev_priv->pinned_bo, false,
+				    false);
+	if (ret)
 		goto out_no_reserve;
-	}
+
+	ret = vmw_validation_add_bo(&val_ctx, dev_priv->dummy_query_bo, false,
+				    false);
+	if (ret)
+		goto out_no_reserve;
+
+	ret = vmw_validation_bo_reserve(&val_ctx, false);
+	if (ret)
+		goto out_no_reserve;
 
 	if (dev_priv->query_cid_valid) {
 		BUG_ON(fence != NULL);
 		ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
-		if (unlikely(ret != 0)) {
-			vmw_execbuf_unpin_panic(dev_priv);
+		if (ret)
 			goto out_no_emit;
-		}
 		dev_priv->query_cid_valid = false;
 	}
 
···
 						  NULL);
 		fence = lfence;
 	}
-	ttm_eu_fence_buffer_objects(&ticket, &validate_list, (void *) fence);
+	vmw_validation_bo_fence(&val_ctx, fence);
 	if (lfence != NULL)
 		vmw_fence_obj_unreference(&lfence);
 
-	ttm_bo_unref(&query_val.bo);
-	ttm_bo_unref(&pinned_val.bo);
+	vmw_validation_unref_lists(&val_ctx);
 	vmw_bo_unreference(&dev_priv->pinned_bo);
 out_unlock:
 	return;
 
 out_no_emit:
-	ttm_eu_backoff_reservation(&ticket, &validate_list);
+	vmw_validation_bo_backoff(&val_ctx);
 out_no_reserve:
-	ttm_bo_unref(&query_val.bo);
-	ttm_bo_unref(&pinned_val.bo);
+	vmw_validation_unref_lists(&val_ctx);
+	vmw_execbuf_unpin_panic(dev_priv);
 	vmw_bo_unreference(&dev_priv->pinned_bo);
+
 }
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_fence.c

···
 	INIT_LIST_HEAD(&fman->cleanup_list);
 	INIT_WORK(&fman->work, &vmw_fence_work_func);
 	fman->fifo_down = true;
-	fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence));
+	fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence)) +
+		TTM_OBJ_EXTRA_SIZE;
 	fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj));
 	fman->event_fence_action_size =
 		ttm_round_pot(sizeof(struct vmw_event_fence_action));
···
 	}
 
 	*p_fence = &ufence->fence;
-	*p_handle = ufence->base.hash.key;
+	*p_handle = ufence->base.handle;
 
 	return 0;
 out_err:
···
 					  "object.\n");
 				goto out_no_ref_obj;
 			}
-			handle = base->hash.key;
+			handle = base->handle;
 		}
 		ttm_base_object_unref(&base);
 	}

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

···
 }
 
 /**
- * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
- * command submission.
- *
- * @dev_priv. Pointer to a device private structure.
- * @buf: The buffer object
- * @interruptible: Whether to perform waits as interruptible.
- * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
- * The buffer will be validated as a GMR. Already pinned buffers will not be
- * validated.
- *
- * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
- * interrupted by a signal.
+ * vmw_kms_helper_validation_finish - Helper for post KMS command submission
+ * cleanup and fencing
+ * @dev_priv: Pointer to the device-private struct
+ * @file_priv: Pointer identifying the client when user-space fencing is used
+ * @ctx: Pointer to the validation context
+ * @out_fence: If non-NULL, returned refcounted fence-pointer
+ * @user_fence_rep: If non-NULL, pointer to user-space address area
+ * in which to copy user-space fence info
  */
-int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
-				  struct vmw_buffer_object *buf,
-				  bool interruptible,
-				  bool validate_as_mob,
-				  bool for_cpu_blit)
+void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
+				      struct drm_file *file_priv,
+				      struct vmw_validation_context *ctx,
+				      struct vmw_fence_obj **out_fence,
+				      struct drm_vmw_fence_rep __user *
+				      user_fence_rep)
 {
-	struct ttm_operation_ctx ctx = {
-		.interruptible = interruptible,
-		.no_wait_gpu = false};
-	struct ttm_buffer_object *bo = &buf->base;
-	int ret;
-
-	ttm_bo_reserve(bo, false, false, NULL);
-	if (for_cpu_blit)
-		ret = ttm_bo_validate(bo, &vmw_nonfixed_placement, &ctx);
-	else
-		ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
-						 validate_as_mob);
-	if (ret)
-		ttm_bo_unreserve(bo);
-
-	return ret;
-}
-
-/**
- * vmw_kms_helper_buffer_revert - Undo the actions of
- * vmw_kms_helper_buffer_prepare.
- *
- * @res: Pointer to the buffer object.
- *
- * Helper to be used if an error forces the caller to undo the actions of
- * vmw_kms_helper_buffer_prepare.
- */
-void vmw_kms_helper_buffer_revert(struct vmw_buffer_object *buf)
-{
-	if (buf)
-		ttm_bo_unreserve(&buf->base);
-}
-
-/**
- * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
- * kms command submission.
- *
- * @dev_priv: Pointer to a device private structure.
- * @file_priv: Pointer to a struct drm_file representing the caller's
- * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
- * if non-NULL, @user_fence_rep must be non-NULL.
- * @buf: The buffer object.
- * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
- * ref-counted fence pointer is returned here.
- * @user_fence_rep: Optional pointer to a user-space provided struct
- * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
- * function copies fence data to user-space in a fail-safe manner.
- */
-void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
-				  struct drm_file *file_priv,
-				  struct vmw_buffer_object *buf,
-				  struct vmw_fence_obj **out_fence,
-				  struct drm_vmw_fence_rep __user *
-				  user_fence_rep)
-{
-	struct vmw_fence_obj *fence;
+	struct vmw_fence_obj *fence = NULL;
 	uint32_t handle;
 	int ret;
 
-	ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
-					 file_priv ? &handle : NULL);
-	if (buf)
-		vmw_bo_fence_single(&buf->base, fence);
+	if (file_priv || user_fence_rep || vmw_validation_has_bos(ctx) ||
+	    out_fence)
+		ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
+						 file_priv ? &handle : NULL);
+	vmw_validation_done(ctx, fence);
 	if (file_priv)
 		vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
 					    ret, user_fence_rep, fence,
···
 		*out_fence = fence;
 	else
 		vmw_fence_obj_unreference(&fence);
-
-	vmw_kms_helper_buffer_revert(buf);
-}
-
-
-/**
- * vmw_kms_helper_resource_revert - Undo the actions of
- * vmw_kms_helper_resource_prepare.
- *
- * @res: Pointer to the resource. Typically a surface.
- *
- * Helper to be used if an error forces the caller to undo the actions of
- * vmw_kms_helper_resource_prepare.
- */
-void vmw_kms_helper_resource_revert(struct vmw_validation_ctx *ctx)
-{
-	struct vmw_resource *res = ctx->res;
-
-	vmw_kms_helper_buffer_revert(ctx->buf);
-	vmw_bo_unreference(&ctx->buf);
-	vmw_resource_unreserve(res, false, NULL, 0);
-	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
-}
-
-/**
- * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
- * command submission.
- *
- * @res: Pointer to the resource. Typically a surface.
- * @interruptible: Whether to perform waits as interruptible.
- *
- * Reserves and validates also the backup buffer if a guest-backed resource.
- * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
- * interrupted by a signal.
- */
-int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
-				    bool interruptible,
-				    struct vmw_validation_ctx *ctx)
-{
-	int ret = 0;
-
-	ctx->buf = NULL;
-	ctx->res = res;
-
-	if (interruptible)
-		ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
-	else
-		mutex_lock(&res->dev_priv->cmdbuf_mutex);
-
-	if (unlikely(ret != 0))
-		return -ERESTARTSYS;
-
-	ret = vmw_resource_reserve(res, interruptible, false);
-	if (ret)
-		goto out_unlock;
-
-	if (res->backup) {
-		ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
-						    interruptible,
-						    res->dev_priv->has_mob,
-						    false);
-		if (ret)
-			goto out_unreserve;
-
-		ctx->buf = vmw_bo_reference(res->backup);
-	}
-	ret = vmw_resource_validate(res);
-	if (ret)
-		goto out_revert;
-	return 0;
-
-out_revert:
-	vmw_kms_helper_buffer_revert(ctx->buf);
-out_unreserve:
-	vmw_resource_unreserve(res, false, NULL, 0);
-out_unlock:
-	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
-	return ret;
-}
-
-/**
- * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
- * kms command submission.
- *
- * @res: Pointer to the resource. Typically a surface.
- * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
- * ref-counted fence pointer is returned here.
- */
-void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
-				    struct vmw_fence_obj **out_fence)
-{
-	struct vmw_resource *res = ctx->res;
-
-	if (ctx->buf || out_fence)
-		vmw_kms_helper_buffer_finish(res->dev_priv, NULL, ctx->buf,
-					     out_fence, NULL);
-
-	vmw_bo_unreference(&ctx->buf);
-	vmw_resource_unreserve(res, false, NULL, 0);
-	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 }
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_kms.h

···
 			 int increment,
 			 struct vmw_kms_dirty *dirty);
 
-int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
-				  struct vmw_buffer_object *buf,
-				  bool interruptible,
-				  bool validate_as_mob,
-				  bool for_cpu_blit);
-void vmw_kms_helper_buffer_revert(struct vmw_buffer_object *buf);
-void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
-				  struct drm_file *file_priv,
-				  struct vmw_buffer_object *buf,
-				  struct vmw_fence_obj **out_fence,
-				  struct drm_vmw_fence_rep __user *
-				  user_fence_rep);
-int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
-				    bool interruptible,
-				    struct vmw_validation_ctx *ctx);
-void vmw_kms_helper_resource_revert(struct vmw_validation_ctx *ctx);
-void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
-				    struct vmw_fence_obj **out_fence);
+void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
+				      struct drm_file *file_priv,
+				      struct vmw_validation_context *ctx,
+				      struct vmw_fence_obj **out_fence,
+				      struct drm_vmw_fence_rep __user *
+				      user_fence_rep);
 int vmw_kms_readback(struct vmw_private *dev_priv,
 		     struct drm_file *file_priv,
 		     struct vmw_framebuffer *vfb,

drivers/gpu/drm/vmwgfx/vmwgfx_prime.c

···
  */
 
 #include "vmwgfx_drv.h"
+#include "ttm_object.h"
 #include <linux/dma-buf.h>
-#include <drm/ttm/ttm_object.h>
 
 /*
  * DMA-BUF attach- and mapping methods. No need to implement

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

···
 	struct vmw_private *dev_priv = res->dev_priv;
 	struct idr *idr = &dev_priv->res_idr[res->func->res_type];
 
-	write_lock(&dev_priv->resource_lock);
+	spin_lock(&dev_priv->resource_lock);
 	if (res->id != -1)
 		idr_remove(idr, res->id);
 	res->id = -1;
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 }
 
 static void vmw_resource_release(struct kref *kref)
···
 	int id;
 	struct idr *idr = &dev_priv->res_idr[res->func->res_type];
 
-	write_lock(&dev_priv->resource_lock);
-	res->avail = false;
+	spin_lock(&dev_priv->resource_lock);
 	list_del_init(&res->lru_head);
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 	if (res->backup) {
 		struct ttm_buffer_object *bo = &res->backup->base;
 
···
 	else
 		kfree(res);
 
-	write_lock(&dev_priv->resource_lock);
+	spin_lock(&dev_priv->resource_lock);
 	if (id != -1)
 		idr_remove(idr, id);
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 }
 
 void vmw_resource_unreference(struct vmw_resource **p_res)
···
 	BUG_ON(res->id != -1);
 
 	idr_preload(GFP_KERNEL);
-	write_lock(&dev_priv->resource_lock);
+	spin_lock(&dev_priv->resource_lock);
 
 	ret = idr_alloc(idr, res, 1, 0, GFP_NOWAIT);
 	if (ret >= 0)
 		res->id = ret;
 
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 	idr_preload_end();
 	return ret < 0 ? ret : 0;
 }
···
 	kref_init(&res->kref);
 	res->hw_destroy = NULL;
 	res->res_free = res_free;
-	res->avail = false;
 	res->dev_priv = dev_priv;
 	res->func = func;
 	INIT_LIST_HEAD(&res->lru_head);
···
 		return vmw_resource_alloc_id(res);
 }
 
-/**
- * vmw_resource_activate
- *
- * @res:        Pointer to the newly created resource
- * @hw_destroy: Destroy function. NULL if none.
- *
- * Activate a resource after the hardware has been made aware of it.
- * Set tye destroy function to @destroy. Typically this frees the
- * resource and destroys the hardware resources associated with it.
- * Activate basically means that the function vmw_resource_lookup will
- * find it.
- */
-void vmw_resource_activate(struct vmw_resource *res,
-			   void (*hw_destroy) (struct vmw_resource *))
-{
-	struct vmw_private *dev_priv = res->dev_priv;
-
-	write_lock(&dev_priv->resource_lock);
-	res->avail = true;
-	res->hw_destroy = hw_destroy;
-	write_unlock(&dev_priv->resource_lock);
-}
 
 /**
  * vmw_user_resource_lookup_handle - lookup a struct resource from a
···
 		goto out_bad_resource;
 
 	res = converter->base_obj_to_res(base);
-
-	read_lock(&dev_priv->resource_lock);
-	if (!res->avail || res->res_free != converter->res_free) {
-		read_unlock(&dev_priv->resource_lock);
-		goto out_bad_resource;
-	}
-
 	kref_get(&res->kref);
-	read_unlock(&dev_priv->resource_lock);
 
 	*p_res = res;
 	ret = 0;
···
 	ttm_base_object_unref(&base);
 
 	return ret;
+}
+
+/**
+ * vmw_user_resource_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
+ * @p_res:        On successful return the location pointed to will contain
+ *                a pointer to a refcounted struct vmw_resource.
+ *
+ * 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);
 }
 
 /**
···
 	if (!res->func->may_evict || res->id == -1 || res->pin_count)
 		return;
 
-	write_lock(&dev_priv->resource_lock);
+	spin_lock(&dev_priv->resource_lock);
 	list_add_tail(&res->lru_head,
 		      &res->dev_priv->res_lru[res->func->res_type]);
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 }
 
 /**
···
 	struct vmw_private *dev_priv = res->dev_priv;
 	int ret;
 
-	write_lock(&dev_priv->resource_lock);
+	spin_lock(&dev_priv->resource_lock);
 	list_del_init(&res->lru_head);
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 
 	if (res->func->needs_backup && res->backup == NULL &&
 	    !no_backup) {
···
 /**
  * vmw_resource_validate - Make a resource up-to-date and visible
  *                         to the device.
- *
- * @res:            The resource to make visible to the device.
+ * @res: The resource to make visible to the device.
+ * @intr: Perform waits interruptible if possible.
  *
  * On succesful return, any backup DMA buffer pointed to by @res->backup will
  * be reserved and validated.
  * On hardware resource shortage, this function will repeatedly evict
  * resources of the same type until the validation succeeds.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted, negative error code
+ * on failure.
  */
-int vmw_resource_validate(struct vmw_resource *res)
+int vmw_resource_validate(struct vmw_resource *res, bool intr)
 {
 	int ret;
 	struct vmw_resource *evict_res;
···
 		if (likely(ret != -EBUSY))
 			break;
 
-		write_lock(&dev_priv->resource_lock);
+		spin_lock(&dev_priv->resource_lock);
 		if (list_empty(lru_list) || !res->func->may_evict) {
 			DRM_ERROR("Out of device device resources "
 				  "for %s.\n", res->func->type_name);
 			ret = -EBUSY;
-			write_unlock(&dev_priv->resource_lock);
+			spin_unlock(&dev_priv->resource_lock);
 			break;
 		}
 
···
 					  lru_head));
 		list_del_init(&evict_res->lru_head);
 
-		write_unlock(&dev_priv->resource_lock);
+		spin_unlock(&dev_priv->resource_lock);
 
 		/* Trylock backup buffers with a NULL ticket. */
-		ret = vmw_resource_do_evict(NULL, evict_res, true);
+		ret = vmw_resource_do_evict(NULL, evict_res, intr);
 		if (unlikely(ret != 0)) {
-			write_lock(&dev_priv->resource_lock);
+			spin_lock(&dev_priv->resource_lock);
 			list_add_tail(&evict_res->lru_head, lru_list);
-			write_unlock(&dev_priv->resource_lock);
+			spin_unlock(&dev_priv->resource_lock);
 			if (ret == -ERESTARTSYS ||
 			    ++err_count > VMW_RES_EVICT_ERR_COUNT) {
 				vmw_resource_unreference(&evict_res);
···
 	struct ww_acquire_ctx ticket;
 
 	do {
-		write_lock(&dev_priv->resource_lock);
+		spin_lock(&dev_priv->resource_lock);
 
 		if (list_empty(lru_list))
 			goto out_unlock;
···
 			list_first_entry(lru_list, struct vmw_resource,
 					 lru_head));
 		list_del_init(&evict_res->lru_head);
-		write_unlock(&dev_priv->resource_lock);
+		spin_unlock(&dev_priv->resource_lock);
 
 		/* Wait lock backup buffers with a ticket. */
 		ret = vmw_resource_do_evict(&ticket, evict_res, false);
 		if (unlikely(ret != 0)) {
-			write_lock(&dev_priv->resource_lock);
+			spin_lock(&dev_priv->resource_lock);
 			list_add_tail(&evict_res->lru_head, lru_list);
-			write_unlock(&dev_priv->resource_lock);
+			spin_unlock(&dev_priv->resource_lock);
 			if (++err_count > VMW_RES_EVICT_ERR_COUNT) {
 				vmw_resource_unreference(&evict_res);
 				return;
···
 	} while (1);
 
 out_unlock:
-	write_unlock(&dev_priv->resource_lock);
+	spin_unlock(&dev_priv->resource_lock);
 }
 
 /**
···
 			/* Do we really need to pin the MOB as well? */
 			vmw_bo_pin_reserved(vbo, true);
 		}
-		ret = vmw_resource_validate(res);
+		ret = vmw_resource_validate(res, interruptible);
 		if (vbo)
 			ttm_bo_unreserve(&vbo->base);
 		if (ret)

drivers/gpu/drm/vmwgfx/vmwgfx_resource_priv.h

···
 
 #include "vmwgfx_drv.h"
 
+/*
+ * Extra memory required by the resource id's ida storage, which is allocated
+ * separately from the base object itself. We estimate an on-average 128 bytes
+ * per ida.
+ */
 #define VMW_IDA_ACC_SIZE 128
 
 enum vmw_cmdbuf_res_state {
···
 		      bool delay_id,
 		      void (*res_free) (struct vmw_resource *res),
 		      const struct vmw_res_func *func);
-void vmw_resource_activate(struct vmw_resource *res,
-			   void (*hw_destroy) (struct vmw_resource *));
 int
 vmw_simple_resource_create_ioctl(struct drm_device *dev,
 				 void *data,

drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

···
 	struct vmw_framebuffer_surface *vfbs =
 		container_of(framebuffer, typeof(*vfbs), base);
 	struct vmw_kms_sou_surface_dirty sdirty;
-	struct vmw_validation_ctx ctx;
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 	int ret;
 
 	if (!srf)
 		srf = &vfbs->surface->res;
 
-	ret = vmw_kms_helper_resource_prepare(srf, true, &ctx);
+	ret = vmw_validation_add_resource(&val_ctx, srf, 0, NULL, NULL);
 	if (ret)
 		return ret;
+
+	ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
+	if (ret)
+		goto out_unref;
 
 	sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
 	sdirty.base.clip = vmw_sou_surface_clip;
···
 	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 				   dest_x, dest_y, num_clips, inc,
 				   &sdirty.base);
-	vmw_kms_helper_resource_finish(&ctx, out_fence);
+	vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
+					 NULL);
 
+	return ret;
+
+out_unref:
+	vmw_validation_unref_lists(&val_ctx);
 	return ret;
 }
 
···
 		container_of(framebuffer, struct vmw_framebuffer_bo,
 			     base)->buffer;
 	struct vmw_kms_dirty dirty;
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 	int ret;
 
-	ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
-					    false, false);
+	ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
 	if (ret)
 		return ret;
+
+	ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
+	if (ret)
+		goto out_unref;
 
 	ret = do_bo_define_gmrfb(dev_priv, framebuffer);
 	if (unlikely(ret != 0))
···
 		num_clips;
 	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 				   0, 0, num_clips, increment, &dirty);
-	vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL);
+	vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
+					 NULL);
 
 	return ret;
 
 out_revert:
-	vmw_kms_helper_buffer_revert(buf);
+	vmw_validation_revert(&val_ctx);
+out_unref:
+	vmw_validation_unref_lists(&val_ctx);
 
 	return ret;
 }
···
 	struct vmw_buffer_object *buf =
 		container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
 	struct vmw_kms_dirty dirty;
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 	int ret;
 
-	ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false,
-					    false);
+	ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
 	if (ret)
 		return ret;
+
+	ret = vmw_validation_prepare(&val_ctx, NULL, true);
+	if (ret)
+		goto out_unref;
 
 	ret = do_bo_define_gmrfb(dev_priv, vfb);
 	if (unlikely(ret != 0))
···
 		num_clips;
 	ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
 				   0, 0, num_clips, 1, &dirty);
-	vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
-				     user_fence_rep);
+	vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
+					 user_fence_rep);
 
 	return ret;
 
 out_revert:
-	vmw_kms_helper_buffer_revert(buf);
-
+	vmw_validation_revert(&val_ctx);
+out_unref:
+	vmw_validation_unref_lists(&val_ctx);
+	
 	return ret;
 }

drivers/gpu/drm/vmwgfx/vmwgfx_shader.c

···
 	shader->num_input_sig = num_input_sig;
 	shader->num_output_sig = num_output_sig;
 
-	vmw_resource_activate(res, vmw_hw_shader_destroy);
+	res->hw_destroy = vmw_hw_shader_destroy;
 	return 0;
 }
 
···
 {
 	struct vmw_dx_shader *entry, *next;
 
-	WARN_ON_ONCE(!mutex_is_locked(&dev_priv->binding_mutex));
+	lockdep_assert_held_once(&dev_priv->binding_mutex);
 
 	list_for_each_entry_safe(entry, next, list, cotable_head) {
 		WARN_ON(vmw_dx_shader_scrub(&entry->res));
···
 
 	res = &shader->res;
 	shader->ctx = ctx;
-	shader->cotable = vmw_context_cotable(ctx, SVGA_COTABLE_DXSHADER);
+	shader->cotable = vmw_resource_reference
+		(vmw_context_cotable(ctx, SVGA_COTABLE_DXSHADER));
 	shader->id = user_key;
 	shader->committed = false;
 	INIT_LIST_HEAD(&shader->cotable_head);
···
 		goto out_resource_init;
 
 	res->id = shader->id;
-	vmw_resource_activate(res, vmw_hw_shader_destroy);
+	res->hw_destroy = vmw_hw_shader_destroy;
 
 out_resource_init:
 	vmw_resource_unreference(&res);
···
 	};
 	int ret;
 
-	/*
-	 * Approximate idr memory usage with 128 bytes. It will be limited
-	 * by maximum number_of shaders anyway.
-	 */
 	if (unlikely(vmw_user_shader_size == 0))
 		vmw_user_shader_size =
-			ttm_round_pot(sizeof(struct vmw_user_shader)) + 128;
+			ttm_round_pot(sizeof(struct vmw_user_shader)) +
+			VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
 
 	ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
 				   vmw_user_shader_size,
···
 	}
 
 	if (handle)
-		*handle = ushader->base.hash.key;
+		*handle = ushader->base.handle;
 out_err:
 	vmw_resource_unreference(&res);
 out:
···
 	};
 	int ret;
 
-	/*
-	 * Approximate idr memory usage with 128 bytes. It will be limited
-	 * by maximum number_of shaders anyway.
-	 */
 	if (unlikely(vmw_shader_size == 0))
 		vmw_shader_size =
-			ttm_round_pot(sizeof(struct vmw_shader)) + 128;
+			ttm_round_pot(sizeof(struct vmw_shader)) +
+			VMW_IDA_ACC_SIZE;
 
 	ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
 				   vmw_shader_size,

drivers/gpu/drm/vmwgfx/vmwgfx_simple_resource.c

···
 		return ret;
 	}
 
-	vmw_resource_activate(&simple->res, simple->func->hw_destroy);
+	simple->res.hw_destroy = simple->func->hw_destroy;
 
 	return 0;
 }
···
 
 	alloc_size = offsetof(struct vmw_user_simple_resource, simple) +
 	  func->size;
-	account_size = ttm_round_pot(alloc_size) + VMW_IDA_ACC_SIZE;
+	account_size = ttm_round_pot(alloc_size) + VMW_IDA_ACC_SIZE +
+		TTM_OBJ_EXTRA_SIZE;
 
 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 	if (ret)
···
 		goto out_err;
 	}
 
-	func->set_arg_handle(data, usimple->base.hash.key);
+	func->set_arg_handle(data, usimple->base.handle);
 out_err:
 	vmw_resource_unreference(&res);
 out_ret:

drivers/gpu/drm/vmwgfx/vmwgfx_so.c

···
 		union vmw_view_destroy body;
 	} *cmd;
 
-	WARN_ON_ONCE(!mutex_is_locked(&dev_priv->binding_mutex));
+	lockdep_assert_held_once(&dev_priv->binding_mutex);
 	vmw_binding_res_list_scrub(&res->binding_head);
 
 	if (!view->committed || res->id == -1)
···
 	res = &view->res;
 	view->ctx = ctx;
 	view->srf = vmw_resource_reference(srf);
-	view->cotable = vmw_context_cotable(ctx, vmw_view_cotables[view_type]);
+	view->cotable = vmw_resource_reference
+		(vmw_context_cotable(ctx, vmw_view_cotables[view_type]));
 	view->view_type = view_type;
 	view->view_id = user_key;
 	view->cmd_size = cmd_size;
···
 		goto out_resource_init;
 
 	res->id = view->view_id;
-	vmw_resource_activate(res, vmw_hw_view_destroy);
+	res->hw_destroy = vmw_hw_view_destroy;
 
 out_resource_init:
 	vmw_resource_unreference(&res);
···
 {
 	struct vmw_view *entry, *next;
 
-	WARN_ON_ONCE(!mutex_is_locked(&dev_priv->binding_mutex));
+	lockdep_assert_held_once(&dev_priv->binding_mutex);
 
 	list_for_each_entry_safe(entry, next, list, cotable_head)
 		WARN_ON(vmw_view_destroy(&entry->res));
···
 {
 	struct vmw_view *entry, *next;
 
-	WARN_ON_ONCE(!mutex_is_locked(&dev_priv->binding_mutex));
+	lockdep_assert_held_once(&dev_priv->binding_mutex);
 
 	list_for_each_entry_safe(entry, next, list, srf_head)
 		WARN_ON(vmw_view_destroy(&entry->res));

drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

···
 	struct vmw_stdu_dirty ddirty;
 	int ret;
 	bool cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 
 	/*
 	 * VMs without 3D support don't have the surface DMA command and
 	 * we'll be using a CPU blit, and the framebuffer should be moved out
 	 * of VRAM.
 	 */
-	ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
-					    false, cpu_blit);
+	ret = vmw_validation_add_bo(&val_ctx, buf, false, cpu_blit);
 	if (ret)
 		return ret;
+
+	ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
+	if (ret)
+		goto out_unref;
 
 	ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 		SVGA3D_READ_HOST_VRAM;
···
 
 	ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 				   0, 0, num_clips, increment, &ddirty.base);
-	vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
-				     user_fence_rep);
 
+	vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
+					 user_fence_rep);
+	return ret;
+
+out_unref:
+	vmw_validation_unref_lists(&val_ctx);
 	return ret;
 }
 
···
 	struct vmw_framebuffer_surface *vfbs =
 		container_of(framebuffer, typeof(*vfbs), base);
 	struct vmw_stdu_dirty sdirty;
-	struct vmw_validation_ctx ctx;
+	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 	int ret;
 
 	if (!srf)
 		srf = &vfbs->surface->res;
 
-	ret = vmw_kms_helper_resource_prepare(srf, true, &ctx);
+	ret = vmw_validation_add_resource(&val_ctx, srf, 0, NULL, NULL);
 	if (ret)
 		return ret;
+
+	ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
+	if (ret)
+		goto out_unref;
 
 	if (vfbs->is_bo_proxy) {
 		ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
···
 				   dest_x, dest_y, num_clips, inc,
 				   &sdirty.base);
 out_finish:
-	vmw_kms_helper_resource_finish(&ctx, out_fence);
+	vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
+					 NULL);
 
+	return ret;
+
+out_unref:
+	vmw_validation_unref_lists(&val_ctx);
 	return ret;
 }
 

drivers/gpu/drm/vmwgfx/vmwgfx_surface.c

···
 	 */
 
 	INIT_LIST_HEAD(&srf->view_list);
-	vmw_resource_activate(res, vmw_hw_surface_destroy);
+	res->hw_destroy = vmw_hw_surface_destroy;
 	return ret;
 }
 
···
 
 	if (unlikely(vmw_user_surface_size == 0))
 		vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
-			128;
+			VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
 
 	num_sizes = 0;
 	for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
···
 	    num_sizes == 0)
 		return -EINVAL;
 
-	size = vmw_user_surface_size + 128 +
+	size = vmw_user_surface_size +
 		ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
 		ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
 
···
 		goto out_unlock;
 	}
 
-	rep->sid = user_srf->prime.base.hash.key;
+	rep->sid = user_srf->prime.base.handle;
 	vmw_resource_unreference(&res);
 
 	ttm_read_unlock(&dev_priv->reservation_sem);
···
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("copy_to_user failed %p %u\n",
 			  user_sizes, srf->num_sizes);
-		ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
+		ttm_ref_object_base_unref(tfile, base->handle, TTM_REF_USAGE);
 		ret = -EFAULT;
 	}
 
···
 
 	if (unlikely(vmw_user_surface_size == 0))
 		vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
-			128;
+			VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
 
-	size = vmw_user_surface_size + 128;
+	size = vmw_user_surface_size;
 
 	/* Define a surface based on the parameters. */
 	ret = vmw_surface_gb_priv_define(dev,
···
 		goto out_unlock;
 	}
 
-	rep->handle      = user_srf->prime.base.hash.key;
+	rep->handle      = user_srf->prime.base.handle;
 	rep->backup_size = res->backup_size;
 	if (res->backup) {
 		rep->buffer_map_handle =
···
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Could not add a reference to a GB surface "
 			  "backup buffer.\n");
-		(void) ttm_ref_object_base_unref(tfile, base->hash.key,
+		(void) ttm_ref_object_base_unref(tfile, base->handle,
 						 TTM_REF_USAGE);
 		goto out_bad_resource;
 	}
···
 	rep->creq.base.array_size = srf->array_size;
 	rep->creq.base.buffer_handle = backup_handle;
 	rep->creq.base.base_size = srf->base_size;
-	rep->crep.handle = user_srf->prime.base.hash.key;
+	rep->crep.handle = user_srf->prime.base.handle;
 	rep->crep.backup_size = srf->res.backup_size;
 	rep->crep.buffer_handle = backup_handle;
 	rep->crep.buffer_map_handle =

drivers/gpu/drm/vmwgfx/vmwgfx_validation.c

···
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/**************************************************************************
+ *
+ * Copyright © 2018 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+#include <linux/slab.h>
+#include "vmwgfx_validation.h"
+#include "vmwgfx_drv.h"
+
+/**
+ * struct vmw_validation_bo_node - Buffer object validation metadata.
+ * @base: Metadata used for TTM reservation- and validation.
+ * @hash: A hash entry used for the duplicate detection hash table.
+ * @as_mob: Validate as mob.
+ * @cpu_blit: Validate for cpu blit access.
+ *
+ * Bit fields are used since these structures are allocated and freed in
+ * large numbers and space conservation is desired.
+ */
+struct vmw_validation_bo_node {
+	struct ttm_validate_buffer base;
+	struct drm_hash_item hash;
+	u32 as_mob : 1;
+	u32 cpu_blit : 1;
+};
+
+/**
+ * struct vmw_validation_res_node - Resource validation metadata.
+ * @head: List head for the resource validation list.
+ * @hash: A hash entry used for the duplicate detection hash table.
+ * @res: Reference counted resource pointer.
+ * @new_backup: Non ref-counted pointer to new backup buffer to be assigned
+ * to a resource.
+ * @new_backup_offset: Offset into the new backup mob for resources that can
+ * share MOBs.
+ * @no_buffer_needed: Kernel does not need to allocate a MOB during validation,
+ * the command stream provides a mob bind operation.
+ * @switching_backup: The validation process is switching backup MOB.
+ * @first_usage: True iff the resource has been seen only once in the current
+ * validation batch.
+ * @reserved: Whether the resource is currently reserved by this process.
+ * @private: Optionally additional memory for caller-private data.
+ *
+ * Bit fields are used since these structures are allocated and freed in
+ * large numbers and space conservation is desired.
+ */
+struct vmw_validation_res_node {
+	struct list_head head;
+	struct drm_hash_item hash;
+	struct vmw_resource *res;
+	struct vmw_buffer_object *new_backup;
+	unsigned long new_backup_offset;
+	u32 no_buffer_needed : 1;
+	u32 switching_backup : 1;
+	u32 first_usage : 1;
+	u32 reserved : 1;
+	unsigned long private[0];
+};
+
+/**
+ * vmw_validation_mem_alloc - Allocate kernel memory from the validation
+ * context based allocator
+ * @ctx: The validation context
+ * @size: The number of bytes to allocated.
+ *
+ * The memory allocated may not exceed PAGE_SIZE, and the returned
+ * address is aligned to sizeof(long). All memory allocated this way is
+ * reclaimed after validation when calling any of the exported functions:
+ * vmw_validation_unref_lists()
+ * vmw_validation_revert()
+ * vmw_validation_done()
+ *
+ * Return: Pointer to the allocated memory on success. NULL on failure.
+ */
+void *vmw_validation_mem_alloc(struct vmw_validation_context *ctx,
+			       unsigned int size)
+{
+	void *addr;
+
+	size = vmw_validation_align(size);
+	if (size > PAGE_SIZE)
+		return NULL;
+
+	if (ctx->mem_size_left < size) {
+		struct page *page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+
+		if (!page)
+			return NULL;
+
+		list_add_tail(&page->lru, &ctx->page_list);
+		ctx->page_address = page_address(page);
+		ctx->mem_size_left = PAGE_SIZE;
+	}
+
+	addr = (void *) (ctx->page_address + (PAGE_SIZE - ctx->mem_size_left));
+	ctx->mem_size_left -= size;
+
+	return addr;
+}
+
+/**
+ * vmw_validation_mem_free - Free all memory allocated using
+ * vmw_validation_mem_alloc()
+ * @ctx: The validation context
+ *
+ * All memory previously allocated for this context using
+ * vmw_validation_mem_alloc() is freed.
+ */
+static void vmw_validation_mem_free(struct vmw_validation_context *ctx)
+{
+	struct page *entry, *next;
+
+	list_for_each_entry_safe(entry, next, &ctx->page_list, lru) {
+		list_del_init(&entry->lru);
+		__free_page(entry);
+	}
+
+	ctx->mem_size_left = 0;
+}
+
+/**
+ * vmw_validation_find_bo_dup - Find a duplicate buffer object entry in the
+ * validation context's lists.
+ * @ctx: The validation context to search.
+ * @vbo: The buffer object to search for.
+ *
+ * Return: Pointer to the struct vmw_validation_bo_node referencing the
+ * duplicate, or NULL if none found.
+ */
+static struct vmw_validation_bo_node *
+vmw_validation_find_bo_dup(struct vmw_validation_context *ctx,
+			   struct vmw_buffer_object *vbo)
+{
+	struct  vmw_validation_bo_node *bo_node = NULL;
+
+	if (!ctx->merge_dups)
+		return NULL;
+
+	if (ctx->ht) {
+		struct drm_hash_item *hash;
+
+		if (!drm_ht_find_item(ctx->ht, (unsigned long) vbo, &hash))
+			bo_node = container_of(hash, typeof(*bo_node), hash);
+	} else {
+		struct  vmw_validation_bo_node *entry;
+
+		list_for_each_entry(entry, &ctx->bo_list, base.head) {
+			if (entry->base.bo == &vbo->base) {
+				bo_node = entry;
+				break;
+			}
+		}
+	}
+
+	return bo_node;
+}
+
+/**
+ * vmw_validation_find_res_dup - Find a duplicate resource entry in the
+ * validation context's lists.
+ * @ctx: The validation context to search.
+ * @vbo: The buffer object to search for.
+ *
+ * Return: Pointer to the struct vmw_validation_bo_node referencing the
+ * duplicate, or NULL if none found.
+ */
+static struct vmw_validation_res_node *
+vmw_validation_find_res_dup(struct vmw_validation_context *ctx,
+			    struct vmw_resource *res)
+{
+	struct  vmw_validation_res_node *res_node = NULL;
+
+	if (!ctx->merge_dups)
+		return NULL;
+
+	if (ctx->ht) {
+		struct drm_hash_item *hash;
+
+		if (!drm_ht_find_item(ctx->ht, (unsigned long) res, &hash))
+			res_node = container_of(hash, typeof(*res_node), hash);
+	} else {
+		struct  vmw_validation_res_node *entry;
+
+		list_for_each_entry(entry, &ctx->resource_ctx_list, head) {
+			if (entry->res == res) {
+				res_node = entry;
+				goto out;
+			}
+		}
+
+		list_for_each_entry(entry, &ctx->resource_list, head) {
+			if (entry->res == res) {
+				res_node = entry;
+				break;
+			}
+		}
+
+	}
+out:
+	return res_node;
+}
+
+/**
+ * vmw_validation_add_bo - Add a buffer object to the validation context.
+ * @ctx: The validation context.
+ * @vbo: The buffer object.
+ * @as_mob: Validate as mob, otherwise suitable for GMR operations.
+ * @cpu_blit: Validate in a page-mappable location.
+ *
+ * Return: Zero on success, negative error code otherwise.
+ */
+int vmw_validation_add_bo(struct vmw_validation_context *ctx,
+			  struct vmw_buffer_object *vbo,
+			  bool as_mob,
+			  bool cpu_blit)
+{
+	struct vmw_validation_bo_node *bo_node;
+
+	bo_node = vmw_validation_find_bo_dup(ctx, vbo);
+	if (bo_node) {
+		if (bo_node->as_mob != as_mob ||
+		    bo_node->cpu_blit != cpu_blit) {
+			DRM_ERROR("Inconsistent buffer usage.\n");
+			return -EINVAL;
+		}
+	} else {
+		struct ttm_validate_buffer *val_buf;
+		int ret;
+
+		bo_node = vmw_validation_mem_alloc(ctx, sizeof(*bo_node));
+		if (!bo_node)
+			return -ENOMEM;
+
+		if (ctx->ht) {
+			bo_node->hash.key = (unsigned long) vbo;
+			ret = drm_ht_insert_item(ctx->ht, &bo_node->hash);
+			if (ret) {
+				DRM_ERROR("Failed to initialize a buffer "
+					  "validation entry.\n");
+				return ret;
+			}
+		}
+		val_buf = &bo_node->base;
+		val_buf->bo = ttm_bo_get_unless_zero(&vbo->base);
+		if (!val_buf->bo)
+			return -ESRCH;
+		val_buf->shared = false;
+		list_add_tail(&val_buf->head, &ctx->bo_list);
+		bo_node->as_mob = as_mob;
+		bo_node->cpu_blit = cpu_blit;
+	}
+
+	return 0;
+}
+
+/**
+ * vmw_validation_add_resource - Add a resource to the validation context.
+ * @ctx: The validation context.
+ * @res: The resource.
+ * @priv_size: Size of private, additional metadata.
+ * @p_node: Output pointer of additional metadata address.
+ * @first_usage: Whether this was the first time this resource was seen.
+ *
+ * Return: Zero on success, negative error code otherwise.
+ */
+int vmw_validation_add_resource(struct vmw_validation_context *ctx,
+				struct vmw_resource *res,
+				size_t priv_size,
+				void **p_node,
+				bool *first_usage)
+{
+	struct vmw_validation_res_node *node;
+	int ret;
+
+	node = vmw_validation_find_res_dup(ctx, res);
+	if (node) {
+		node->first_usage = 0;
+		goto out_fill;
+	}
+
+	node = vmw_validation_mem_alloc(ctx, sizeof(*node) + priv_size);
+	if (!node) {
+		DRM_ERROR("Failed to allocate a resource validation "
+			  "entry.\n");
+		return -ENOMEM;
+	}
+
+	if (ctx->ht) {
+		node->hash.key = (unsigned long) res;
+		ret = drm_ht_insert_item(ctx->ht, &node->hash);
+		if (ret) {
+			DRM_ERROR("Failed to initialize a resource validation "
+				  "entry.\n");
+			return ret;
+		}
+	}
+	node->res = vmw_resource_reference_unless_doomed(res);
+	if (!node->res)
+		return -ESRCH;
+
+	node->first_usage = 1;
+	if (!res->dev_priv->has_mob) {
+		list_add_tail(&node->head, &ctx->resource_list);
+	} else {
+		switch (vmw_res_type(res)) {
+		case vmw_res_context:
+		case vmw_res_dx_context:
+			list_add(&node->head, &ctx->resource_ctx_list);
+			break;
+		case vmw_res_cotable:
+			list_add_tail(&node->head, &ctx->resource_ctx_list);
+			break;
+		default:
+			list_add_tail(&node->head, &ctx->resource_list);
+			break;
+		}
+	}
+
+out_fill:
+	if (first_usage)
+		*first_usage = node->first_usage;
+	if (p_node)
+		*p_node = &node->private;
+
+	return 0;
+}
+
+/**
+ * vmw_validation_res_switch_backup - Register a backup MOB switch during
+ * validation.
+ * @ctx: The validation context.
+ * @val_private: The additional meta-data pointer returned when the
+ * resource was registered with the validation context. Used to identify
+ * the resource.
+ * @vbo: The new backup buffer object MOB. This buffer object needs to have
+ * already been registered with the validation context.
+ * @backup_offset: Offset into the new backup MOB.
+ */
+void vmw_validation_res_switch_backup(struct vmw_validation_context *ctx,
+				      void *val_private,
+				      struct vmw_buffer_object *vbo,
+				      unsigned long backup_offset)
+{
+	struct vmw_validation_res_node *val;
+
+	val = container_of(val_private, typeof(*val), private);
+
+	val->switching_backup = 1;
+	if (val->first_usage)
+		val->no_buffer_needed = 1;
+
+	val->new_backup = vbo;
+	val->new_backup_offset = backup_offset;
+}
+
+/**
+ * vmw_validation_res_reserve - Reserve all resources registered with this
+ * validation context.
+ * @ctx: The validation context.
+ * @intr: Use interruptible waits when possible.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted. Negative error
+ * code on failure.
+ */
+int vmw_validation_res_reserve(struct vmw_validation_context *ctx,
+			       bool intr)
+{
+	struct vmw_validation_res_node *val;
+	int ret = 0;
+
+	list_splice_init(&ctx->resource_ctx_list, &ctx->resource_list);
+
+	list_for_each_entry(val, &ctx->resource_list, head) {
+		struct vmw_resource *res = val->res;
+
+		ret = vmw_resource_reserve(res, intr, val->no_buffer_needed);
+		if (ret)
+			goto out_unreserve;
+
+		val->reserved = 1;
+		if (res->backup) {
+			struct vmw_buffer_object *vbo = res->backup;
+
+			ret = vmw_validation_add_bo
+				(ctx, vbo, vmw_resource_needs_backup(res),
+				 false);
+			if (ret)
+				goto out_unreserve;
+		}
+	}
+
+	return 0;
+
+out_unreserve:
+	vmw_validation_res_unreserve(ctx, true);
+	return ret;
+}
+
+/**
+ * vmw_validation_res_unreserve - Unreserve all reserved resources
+ * registered with this validation context.
+ * @ctx: The validation context.
+ * @backoff: Whether this is a backoff- of a commit-type operation. This
+ * is used to determine whether to switch backup MOBs or not.
+ */
+void vmw_validation_res_unreserve(struct vmw_validation_context *ctx,
+				 bool backoff)
+{
+	struct vmw_validation_res_node *val;
+
+	list_splice_init(&ctx->resource_ctx_list, &ctx->resource_list);
+
+	list_for_each_entry(val, &ctx->resource_list, head) {
+		if (val->reserved)
+			vmw_resource_unreserve(val->res,
+					       !backoff &&
+					       val->switching_backup,
+					       val->new_backup,
+					       val->new_backup_offset);
+	}
+}
+
+/**
+ * vmw_validation_bo_validate_single - Validate a single buffer object.
+ * @bo: The TTM buffer object base.
+ * @interruptible: Whether to perform waits interruptible if possible.
+ * @validate_as_mob: Whether to validate in MOB memory.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted. Negative error
+ * code on failure.
+ */
+int vmw_validation_bo_validate_single(struct ttm_buffer_object *bo,
+				      bool interruptible,
+				      bool validate_as_mob)
+{
+	struct vmw_buffer_object *vbo =
+		container_of(bo, struct vmw_buffer_object, base);
+	struct ttm_operation_ctx ctx = {
+		.interruptible = interruptible,
+		.no_wait_gpu = false
+	};
+	int ret;
+
+	if (vbo->pin_count > 0)
+		return 0;
+
+	if (validate_as_mob)
+		return ttm_bo_validate(bo, &vmw_mob_placement, &ctx);
+
+	/**
+	 * Put BO in VRAM if there is space, otherwise as a GMR.
+	 * If there is no space in VRAM and GMR ids are all used up,
+	 * start evicting GMRs to make room. If the DMA buffer can't be
+	 * used as a GMR, this will return -ENOMEM.
+	 */
+
+	ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, &ctx);
+	if (ret == 0 || ret == -ERESTARTSYS)
+		return ret;
+
+	/**
+	 * If that failed, try VRAM again, this time evicting
+	 * previous contents.
+	 */
+
+	ret = ttm_bo_validate(bo, &vmw_vram_placement, &ctx);
+	return ret;
+}
+
+/**
+ * vmw_validation_bo_validate - Validate all buffer objects registered with
+ * the validation context.
+ * @ctx: The validation context.
+ * @intr: Whether to perform waits interruptible if possible.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted,
+ * negative error code on failure.
+ */
+int vmw_validation_bo_validate(struct vmw_validation_context *ctx, bool intr)
+{
+	struct vmw_validation_bo_node *entry;
+	int ret;
+
+	list_for_each_entry(entry, &ctx->bo_list, base.head) {
+		if (entry->cpu_blit) {
+			struct ttm_operation_ctx ctx = {
+				.interruptible = intr,
+				.no_wait_gpu = false
+			};
+
+			ret = ttm_bo_validate(entry->base.bo,
+					      &vmw_nonfixed_placement, &ctx);
+		} else {
+			ret = vmw_validation_bo_validate_single
+			(entry->base.bo, intr, entry->as_mob);
+		}
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+/**
+ * vmw_validation_res_validate - Validate all resources registered with the
+ * validation context.
+ * @ctx: The validation context.
+ * @intr: Whether to perform waits interruptible if possible.
+ *
+ * Before this function is called, all resource backup buffers must have
+ * been validated.
+ *
+ * Return: Zero on success, -ERESTARTSYS if interrupted,
+ * negative error code on failure.
+ */
+int vmw_validation_res_validate(struct vmw_validation_context *ctx, bool intr)
+{
+	struct vmw_validation_res_node *val;
+	int ret;
+
+	list_for_each_entry(val, &ctx->resource_list, head) {
+		struct vmw_resource *res = val->res;
+		struct vmw_buffer_object *backup = res->backup;
+
+		ret = vmw_resource_validate(res, intr);
+		if (ret) {
+			if (ret != -ERESTARTSYS)
+				DRM_ERROR("Failed to validate resource.\n");
+			return ret;
+		}
+
+		/* Check if the resource switched backup buffer */
+		if (backup && res->backup && (backup != res->backup)) {
+			struct vmw_buffer_object *vbo = res->backup;
+
+			ret = vmw_validation_add_bo
+				(ctx, vbo, vmw_resource_needs_backup(res),
+				 false);
+			if (ret)
+				return ret;
+		}
+	}
+	return 0;
+}
+
+/**
+ * vmw_validation_drop_ht - Reset the hash table used for duplicate finding
+ * and unregister it from this validation context.
+ * @ctx: The validation context.
+ *
+ * The hash table used for duplicate finding is an expensive resource and
+ * may be protected by mutexes that may cause deadlocks during resource
+ * unreferencing if held. After resource- and buffer object registering,
+ * there is no longer any use for this hash table, so allow freeing it
+ * either to shorten any mutex locking time, or before resources- and
+ * buffer objects are freed during validation context cleanup.
+ */
+void vmw_validation_drop_ht(struct vmw_validation_context *ctx)
+{
+	struct vmw_validation_bo_node *entry;
+	struct vmw_validation_res_node *val;
+
+	if (!ctx->ht)
+		return;
+
+	list_for_each_entry(entry, &ctx->bo_list, base.head)
+		(void) drm_ht_remove_item(ctx->ht, &entry->hash);
+
+	list_for_each_entry(val, &ctx->resource_list, head)
+		(void) drm_ht_remove_item(ctx->ht, &val->hash);
+
+	list_for_each_entry(val, &ctx->resource_ctx_list, head)
+		(void) drm_ht_remove_item(ctx->ht, &val->hash);
+
+	ctx->ht = NULL;
+}
+
+/**
+ * vmw_validation_unref_lists - Unregister previously registered buffer
+ * object and resources.
+ * @ctx: The validation context.
+ *
+ * Note that this function may cause buffer object- and resource destructors
+ * to be invoked.
+ */
+void vmw_validation_unref_lists(struct vmw_validation_context *ctx)
+{
+	struct vmw_validation_bo_node *entry;
+	struct vmw_validation_res_node *val;
+
+	list_for_each_entry(entry, &ctx->bo_list, base.head)
+		ttm_bo_unref(&entry->base.bo);
+
+	list_splice_init(&ctx->resource_ctx_list, &ctx->resource_list);
+	list_for_each_entry(val, &ctx->resource_list, head)
+		vmw_resource_unreference(&val->res);
+
+	/*
+	 * No need to detach each list entry since they are all freed with
+	 * vmw_validation_free_mem. Just make the inaccessible.
+	 */
+	INIT_LIST_HEAD(&ctx->bo_list);
+	INIT_LIST_HEAD(&ctx->resource_list);
+
+	vmw_validation_mem_free(ctx);
+}
+
+/**
+ * vmw_validation_prepare - Prepare a validation context for command
+ * submission.
+ * @ctx: The validation context.
+ * @mutex: The mutex used to protect resource reservation.
+ * @intr: Whether to perform waits interruptible if possible.
+ *
+ * Note that the single reservation mutex @mutex is an unfortunate
+ * construct. Ideally resource reservation should be moved to per-resource
+ * ww_mutexes.
+ * If this functions doesn't return Zero to indicate success, all resources
+ * are left unreserved but still referenced.
+ * Return: Zero on success, -ERESTARTSYS if interrupted, negative error code
+ * on error.
+ */
+int vmw_validation_prepare(struct vmw_validation_context *ctx,
+			   struct mutex *mutex,
+			   bool intr)
+{
+	int ret = 0;
+
+	if (mutex) {
+		if (intr)
+			ret = mutex_lock_interruptible(mutex);
+		else
+			mutex_lock(mutex);
+		if (ret)
+			return -ERESTARTSYS;
+	}
+
+	ctx->res_mutex = mutex;
+	ret = vmw_validation_res_reserve(ctx, intr);
+	if (ret)
+		goto out_no_res_reserve;
+
+	ret = vmw_validation_bo_reserve(ctx, intr);
+	if (ret)
+		goto out_no_bo_reserve;
+
+	ret = vmw_validation_bo_validate(ctx, intr);
+	if (ret)
+		goto out_no_validate;
+
+	ret = vmw_validation_res_validate(ctx, intr);
+	if (ret)
+		goto out_no_validate;
+
+	return 0;
+
+out_no_validate:
+	vmw_validation_bo_backoff(ctx);
+out_no_bo_reserve:
+	vmw_validation_res_unreserve(ctx, true);
+out_no_res_reserve:
+	if (mutex)
+		mutex_unlock(mutex);
+
+	return ret;
+}
+
+/**
+ * vmw_validation_revert - Revert validation actions if command submission
+ * failed.
+ *
+ * @ctx: The validation context.
+ *
+ * The caller still needs to unref resources after a call to this function.
+ */
+void vmw_validation_revert(struct vmw_validation_context *ctx)
+{
+	vmw_validation_bo_backoff(ctx);
+	vmw_validation_res_unreserve(ctx, true);
+	if (ctx->res_mutex)
+		mutex_unlock(ctx->res_mutex);
+	vmw_validation_unref_lists(ctx);
+}
+
+/**
+ * vmw_validation_cone - Commit validation actions after command submission
+ * success.
+ * @ctx: The validation context.
+ * @fence: Fence with which to fence all buffer objects taking part in the
+ * command submission.
+ *
+ * The caller does NOT need to unref resources after a call to this function.
+ */
+void vmw_validation_done(struct vmw_validation_context *ctx,
+			 struct vmw_fence_obj *fence)
+{
+	vmw_validation_bo_fence(ctx, fence);
+	vmw_validation_res_unreserve(ctx, false);
+	if (ctx->res_mutex)
+		mutex_unlock(ctx->res_mutex);
+	vmw_validation_unref_lists(ctx);
+}
+
+/**
+ * vmw_validation_preload_bo - Preload the validation memory allocator for a
+ * call to vmw_validation_add_bo().
+ * @ctx: Pointer to the validation context.
+ *
+ * Iff this function returns successfully, the next call to
+ * vmw_validation_add_bo() is guaranteed not to sleep. An error is not fatal
+ * but voids the guarantee.
+ *
+ * Returns: Zero if successful, %-EINVAL otherwise.
+ */
+int vmw_validation_preload_bo(struct vmw_validation_context *ctx)
+{
+	unsigned int size = sizeof(struct vmw_validation_bo_node);
+
+	if (!vmw_validation_mem_alloc(ctx, size))
+		return -ENOMEM;
+
+	ctx->mem_size_left += size;
+	return 0;
+}
+
+/**
+ * vmw_validation_preload_res - Preload the validation memory allocator for a
+ * call to vmw_validation_add_res().
+ * @ctx: Pointer to the validation context.
+ * @size: Size of the validation node extra data. See below.
+ *
+ * Iff this function returns successfully, the next call to
+ * vmw_validation_add_res() with the same or smaller @size is guaranteed not to
+ * sleep. An error is not fatal but voids the guarantee.
+ *
+ * Returns: Zero if successful, %-EINVAL otherwise.
+ */
+int vmw_validation_preload_res(struct vmw_validation_context *ctx,
+			       unsigned int size)
+{
+	size = vmw_validation_align(sizeof(struct vmw_validation_res_node) +
+				    size) +
+		vmw_validation_align(sizeof(struct vmw_validation_bo_node));
+	if (!vmw_validation_mem_alloc(ctx, size))
+		return -ENOMEM;
+
+	ctx->mem_size_left += size;
+	return 0;
+}

drivers/gpu/drm/vmwgfx/vmwgfx_validation.h

···
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/**************************************************************************
+ *
+ * Copyright © 2018 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+#ifndef _VMWGFX_VALIDATION_H_
+#define _VMWGFX_VALIDATION_H_
+
+#include <drm/drm_hashtab.h>
+#include <linux/list.h>
+#include <linux/ww_mutex.h>
+#include <drm/ttm/ttm_execbuf_util.h>
+
+/**
+ * struct vmw_validation_context - Per command submission validation context
+ * @ht: Hash table used to find resource- or buffer object duplicates
+ * @resource_list: List head for resource validation metadata
+ * @resource_ctx_list: List head for resource validation metadata for
+ * resources that need to be validated before those in @resource_list
+ * @bo_list: List head for buffer objects
+ * @page_list: List of pages used by the memory allocator
+ * @ticket: Ticked used for ww mutex locking
+ * @res_mutex: Pointer to mutex used for resource reserving
+ * @merge_dups: Whether to merge metadata for duplicate resources or
+ * buffer objects
+ * @mem_size_left: Free memory left in the last page in @page_list
+ * @page_address: Kernel virtual address of the last page in @page_list
+ */
+struct vmw_validation_context {
+	struct drm_open_hash *ht;
+	struct list_head resource_list;
+	struct list_head resource_ctx_list;
+	struct list_head bo_list;
+	struct list_head page_list;
+	struct ww_acquire_ctx ticket;
+	struct mutex *res_mutex;
+	unsigned int merge_dups;
+	unsigned int mem_size_left;
+	u8 *page_address;
+};
+
+struct vmw_buffer_object;
+struct vmw_resource;
+struct vmw_fence_obj;
+
+#if 0
+/**
+ * DECLARE_VAL_CONTEXT - Declare a validation context with initialization
+ * @_name: The name of the variable
+ * @_ht: The hash table used to find dups or NULL if none
+ * @_merge_dups: Whether to merge duplicate buffer object- or resource
+ * entries. If set to true, ideally a hash table pointer should be supplied
+ * as well unless the number of resources and buffer objects per validation
+ * is known to be very small
+ */
+#endif
+#define DECLARE_VAL_CONTEXT(_name, _ht, _merge_dups)			\
+	struct vmw_validation_context _name =				\
+	{ .ht = _ht,							\
+	  .resource_list = LIST_HEAD_INIT((_name).resource_list),	\
+	  .resource_ctx_list = LIST_HEAD_INIT((_name).resource_ctx_list), \
+	  .bo_list = LIST_HEAD_INIT((_name).bo_list),			\
+	  .page_list = LIST_HEAD_INIT((_name).page_list),		\
+	  .res_mutex = NULL,						\
+	  .merge_dups = _merge_dups,					\
+	  .mem_size_left = 0,						\
+	}
+
+/**
+ * vmw_validation_has_bos - return whether the validation context has
+ * any buffer objects registered.
+ *
+ * @ctx: The validation context
+ * Returns: Whether any buffer objects are registered
+ */
+static inline bool
+vmw_validation_has_bos(struct vmw_validation_context *ctx)
+{
+	return !list_empty(&ctx->bo_list);
+}
+
+/**
+ * vmw_validation_set_ht - Register a hash table for duplicate finding
+ * @ctx: The validation context
+ * @ht: Pointer to a hash table to use for duplicate finding
+ * This function is intended to be used if the hash table wasn't
+ * available at validation context declaration time
+ */
+static inline void vmw_validation_set_ht(struct vmw_validation_context *ctx,
+					 struct drm_open_hash *ht)
+{
+	ctx->ht = ht;
+}
+
+/**
+ * vmw_validation_bo_reserve - Reserve buffer objects registered with a
+ * validation context
+ * @ctx: The validation context
+ * @intr: Perform waits interruptible
+ *
+ * Return: Zero on success, -ERESTARTSYS when interrupted, negative error
+ * code on failure
+ */
+static inline int
+vmw_validation_bo_reserve(struct vmw_validation_context *ctx,
+			  bool intr)
+{
+	return ttm_eu_reserve_buffers(&ctx->ticket, &ctx->bo_list, intr,
+				      NULL);
+}
+
+/**
+ * vmw_validation_bo_backoff - Unreserve buffer objects registered with a
+ * validation context
+ * @ctx: The validation context
+ *
+ * This function unreserves the buffer objects previously reserved using
+ * vmw_validation_bo_reserve. It's typically used as part of an error path
+ */
+static inline void
+vmw_validation_bo_backoff(struct vmw_validation_context *ctx)
+{
+	ttm_eu_backoff_reservation(&ctx->ticket, &ctx->bo_list);
+}
+
+/**
+ * vmw_validation_bo_fence - Unreserve and fence buffer objects registered
+ * with a validation context
+ * @ctx: The validation context
+ *
+ * This function unreserves the buffer objects previously reserved using
+ * vmw_validation_bo_reserve, and fences them with a fence object.
+ */
+static inline void
+vmw_validation_bo_fence(struct vmw_validation_context *ctx,
+			struct vmw_fence_obj *fence)
+{
+	ttm_eu_fence_buffer_objects(&ctx->ticket, &ctx->bo_list,
+				    (void *) fence);
+}
+
+/**
+ * vmw_validation_context_init - Initialize a validation context
+ * @ctx: Pointer to the validation context to initialize
+ *
+ * This function initializes a validation context with @merge_dups set
+ * to false
+ */
+static inline void
+vmw_validation_context_init(struct vmw_validation_context *ctx)
+{
+	memset(ctx, 0, sizeof(*ctx));
+	INIT_LIST_HEAD(&ctx->resource_list);
+	INIT_LIST_HEAD(&ctx->resource_ctx_list);
+	INIT_LIST_HEAD(&ctx->bo_list);
+}
+
+/**
+ * vmw_validation_align - Align a validation memory allocation
+ * @val: The size to be aligned
+ *
+ * Returns: @val aligned to the granularity used by the validation memory
+ * allocator.
+ */
+static inline unsigned int vmw_validation_align(unsigned int val)
+{
+	return ALIGN(val, sizeof(long));
+}
+
+int vmw_validation_add_bo(struct vmw_validation_context *ctx,
+			  struct vmw_buffer_object *vbo,
+			  bool as_mob, bool cpu_blit);
+int vmw_validation_bo_validate_single(struct ttm_buffer_object *bo,
+				      bool interruptible,
+				      bool validate_as_mob);
+int vmw_validation_bo_validate(struct vmw_validation_context *ctx, bool intr);
+void vmw_validation_unref_lists(struct vmw_validation_context *ctx);
+int vmw_validation_add_resource(struct vmw_validation_context *ctx,
+				struct vmw_resource *res,
+				size_t priv_size,
+				void **p_node,
+				bool *first_usage);
+void vmw_validation_drop_ht(struct vmw_validation_context *ctx);
+int vmw_validation_res_reserve(struct vmw_validation_context *ctx,
+			       bool intr);
+void vmw_validation_res_unreserve(struct vmw_validation_context *ctx,
+				  bool backoff);
+void vmw_validation_res_switch_backup(struct vmw_validation_context *ctx,
+				      void *val_private,
+				      struct vmw_buffer_object *vbo,
+				      unsigned long backup_offset);
+int vmw_validation_res_validate(struct vmw_validation_context *ctx, bool intr);
+
+int vmw_validation_prepare(struct vmw_validation_context *ctx,
+			   struct mutex *mutex, bool intr);
+void vmw_validation_revert(struct vmw_validation_context *ctx);
+void vmw_validation_done(struct vmw_validation_context *ctx,
+			 struct vmw_fence_obj *fence);
+
+void *vmw_validation_mem_alloc(struct vmw_validation_context *ctx,
+			       unsigned int size);
+int vmw_validation_preload_bo(struct vmw_validation_context *ctx);
+int vmw_validation_preload_res(struct vmw_validation_context *ctx,
+			       unsigned int size);
+#endif

include/drm/ttm/ttm_bo_api.h

···
 }
 
 /**
+ * ttm_bo_get_unless_zero - reference a struct ttm_buffer_object unless
+ * its refcount has already reached zero.
+ * @bo: The buffer object.
+ *
+ * Used to reference a TTM buffer object in lookups where the object is removed
+ * from the lookup structure during the destructor and for RCU lookups.
+ *
+ * Returns: @bo if the referencing was successful, NULL otherwise.
+ */
+static inline __must_check struct ttm_buffer_object *
+ttm_bo_get_unless_zero(struct ttm_buffer_object *bo)
+{
+	if (!kref_get_unless_zero(&bo->kref))
+		return NULL;
+	return bo;
+}
+
+/**
  * ttm_bo_wait - wait for buffer idle.
  *
  * @bo:  The buffer object.

include/drm/ttm/ttm_object.h drivers/gpu/drm/vmwgfx/ttm_object.h

···
 #include <linux/kref.h>
 #include <linux/rcupdate.h>
 #include <linux/dma-buf.h>
-
-#include "ttm_memory.h"
+#include <drm/ttm/ttm_memory.h>
 
 /**
  * enum ttm_ref_type
···
 
 struct ttm_base_object {
 	struct rcu_head rhead;
-	struct drm_hash_item hash;
-	enum ttm_object_type object_type;
-	bool shareable;
 	struct ttm_object_file *tfile;
 	struct kref refcount;
 	void (*refcount_release) (struct ttm_base_object **base);
 	void (*ref_obj_release) (struct ttm_base_object *base,
 				 enum ttm_ref_type ref_type);
+	u32 handle;
+	enum ttm_object_type object_type;
+	u32 shareable;
 };
 
 
···
 
 #define ttm_prime_object_kfree(__obj, __prime)		\
 	kfree_rcu(__obj, __prime.base.rhead)
+
+/*
+ * Extra memory required by the base object's idr storage, which is allocated
+ * separately from the base object itself. We estimate an on-average 128 bytes
+ * per idr.
+ */
+#define TTM_OBJ_EXTRA_SIZE 128
+
+struct ttm_base_object *
+ttm_base_object_noref_lookup(struct ttm_object_file *tfile, uint32_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