Refer to the GGTT VM consistently as "ggtt_vm" instead of just "ggtt",
"vm" or indirectly through other variables like "dev_priv->ggtt.base"
to avoid confusion with the i915_ggtt object itself and PPGTT VMs.

As a bonus gets rid of the long-standing i915_obj_to_ggtt vs.
i915_gem_obj_to_ggtt conflict, due to the other becoming
i915_obj_to_ggtt_vm!

Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c    |  16 ++--
 drivers/gpu/drm/i915/i915_drv.h        |   6 +-
 drivers/gpu/drm/i915/i915_gem.c        |  19 ++---
 drivers/gpu/drm/i915/i915_gem_gtt.c    | 131 +++++++++++++++++----------------
 drivers/gpu/drm/i915/i915_gem_stolen.c |  10 +--
 5 files changed, 94 insertions(+), 88 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index e0ba3e3..41a76b1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -203,7 +203,7 @@ static int i915_gem_object_list_info(struct seq_file *m, 
void *data)
        struct list_head *head;
        struct drm_device *dev = node->minor->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
-       struct i915_address_space *vm = &dev_priv->ggtt.base;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
        struct i915_vma *vma;
        u64 total_obj_size, total_gtt_size;
        int count, ret;
@@ -216,11 +216,11 @@ static int i915_gem_object_list_info(struct seq_file *m, 
void *data)
        switch (list) {
        case ACTIVE_LIST:
                seq_puts(m, "Active:\n");
-               head = &vm->active_list;
+               head = &ggtt_vm->active_list;
                break;
        case INACTIVE_LIST:
                seq_puts(m, "Inactive:\n");
-               head = &vm->inactive_list;
+               head = &ggtt_vm->inactive_list;
                break;
        default:
                mutex_unlock(&dev->struct_mutex);
@@ -430,10 +430,11 @@ static int i915_gem_object_info(struct seq_file *m, void* 
data)
        struct drm_info_node *node = m->private;
        struct drm_device *dev = node->minor->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_ggtt *ggtt = &dev_priv->ggtt;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
        u32 count, mappable_count, purgeable_count;
        u64 size, mappable_size, purgeable_size;
        struct drm_i915_gem_object *obj;
-       struct i915_address_space *vm = &dev_priv->ggtt.base;
        struct drm_file *file;
        struct i915_vma *vma;
        int ret;
@@ -452,12 +453,12 @@ static int i915_gem_object_info(struct seq_file *m, void* 
data)
                   count, mappable_count, size, mappable_size);
 
        size = count = mappable_size = mappable_count = 0;
-       count_vmas(&vm->active_list, vm_link);
+       count_vmas(&ggtt_vm->active_list, vm_link);
        seq_printf(m, "  %u [%u] active objects, %llu [%llu] bytes\n",
                   count, mappable_count, size, mappable_size);
 
        size = count = mappable_size = mappable_count = 0;
-       count_vmas(&vm->inactive_list, vm_link);
+       count_vmas(&ggtt_vm->inactive_list, vm_link);
        seq_printf(m, "  %u [%u] inactive objects, %llu [%llu] bytes\n",
                   count, mappable_count, size, mappable_size);
 
@@ -492,8 +493,7 @@ static int i915_gem_object_info(struct seq_file *m, void* 
data)
                   count, size);
 
        seq_printf(m, "%llu [%llu] gtt total\n",
-                  dev_priv->ggtt.base.total,
-                  (u64)dev_priv->ggtt.mappable_end - 
dev_priv->ggtt.base.start);
+                  ggtt_vm->total, ggtt->mappable_end - ggtt_vm->start);
 
        seq_putc(m, '\n');
        print_batch_pool_stats(m, dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 08b88c0..3df10fe 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3137,7 +3137,7 @@ i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj)
 bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj);
 
 /* Some GGTT VM helpers */
-#define i915_obj_to_ggtt(obj) \
+#define i915_obj_to_ggtt_vm(obj) \
        (&((struct drm_i915_private *)(obj)->base.dev->dev_private)->ggtt.base)
 
 static inline struct i915_hw_ppgtt *
@@ -3156,7 +3156,7 @@ static inline bool i915_gem_obj_ggtt_bound(struct 
drm_i915_gem_object *obj)
 static inline unsigned long
 i915_gem_obj_ggtt_size(struct drm_i915_gem_object *obj)
 {
-       return i915_gem_obj_size(obj, i915_obj_to_ggtt(obj));
+       return i915_gem_obj_size(obj, i915_obj_to_ggtt_vm(obj));
 }
 
 static inline int __must_check
@@ -3164,7 +3164,7 @@ i915_gem_obj_ggtt_pin(struct drm_i915_gem_object *obj,
                      uint32_t alignment,
                      unsigned flags)
 {
-       return i915_gem_object_pin(obj, i915_obj_to_ggtt(obj),
+       return i915_gem_object_pin(obj, i915_obj_to_ggtt_vm(obj),
                                   alignment, flags | PIN_GLOBAL);
 }
 
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 506a706..ae08283 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -133,6 +133,7 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void 
*data,
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct drm_i915_gem_get_aperture *args = data;
        struct i915_ggtt *ggtt = &dev_priv->ggtt;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
        struct i915_vma *vma;
        size_t pinned;
 
@@ -146,7 +147,7 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void 
*data,
                        pinned += vma->node.size;
        mutex_unlock(&dev->struct_mutex);
 
-       args->aper_size = dev_priv->ggtt.base.total;
+       args->aper_size = ggtt_vm->total;
        args->aper_available_size = args->aper_size - pinned;
 
        return 0;
@@ -3772,7 +3773,7 @@ i915_gem_object_set_to_gtt_domain(struct 
drm_i915_gem_object *obj, bool write)
        vma = i915_gem_obj_to_ggtt(obj);
        if (vma && drm_mm_node_allocated(&vma->node) && !obj->active)
                list_move_tail(&vma->vm_link,
-                              
&to_i915(obj->base.dev)->ggtt.base.inactive_list);
+                              &i915_obj_to_ggtt_vm(obj)->inactive_list);
 
        return 0;
 }
@@ -4309,7 +4310,7 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
        if (WARN_ONCE(!view, "no view specified"))
                return -EINVAL;
 
-       return i915_gem_object_do_pin(obj, i915_obj_to_ggtt(obj), view,
+       return i915_gem_object_do_pin(obj, i915_obj_to_ggtt_vm(obj), view,
                                      alignment, flags | PIN_GLOBAL);
 }
 
@@ -4621,14 +4622,14 @@ struct i915_vma *i915_gem_obj_to_vma(struct 
drm_i915_gem_object *obj,
 struct i915_vma *i915_gem_obj_to_ggtt_view(struct drm_i915_gem_object *obj,
                                           const struct i915_ggtt_view *view)
 {
-       struct i915_address_space *ggtt = i915_obj_to_ggtt(obj);
+       struct i915_address_space *ggtt_vm = i915_obj_to_ggtt_vm(obj);
        struct i915_vma *vma;
 
        if (WARN_ONCE(!view, "no view specified"))
                return ERR_PTR(-EINVAL);
 
        list_for_each_entry(vma, &obj->vma_list, obj_link)
-               if (vma->vm == ggtt &&
+               if (vma->vm == ggtt_vm &&
                    i915_ggtt_view_equal(&vma->ggtt_view, view))
                        return vma;
        return NULL;
@@ -5221,11 +5222,11 @@ u64 i915_gem_obj_offset(struct drm_i915_gem_object *o,
 u64 i915_gem_obj_ggtt_offset_view(struct drm_i915_gem_object *o,
                                  const struct i915_ggtt_view *view)
 {
-       struct i915_address_space *ggtt = i915_obj_to_ggtt(o);
+       struct i915_address_space *ggtt_vm = i915_obj_to_ggtt_vm(o);
        struct i915_vma *vma;
 
        list_for_each_entry(vma, &o->vma_list, obj_link)
-               if (vma->vm == ggtt &&
+               if (vma->vm == ggtt_vm &&
                    i915_ggtt_view_equal(&vma->ggtt_view, view))
                        return vma->node.start;
 
@@ -5252,11 +5253,11 @@ bool i915_gem_obj_bound(struct drm_i915_gem_object *o,
 bool i915_gem_obj_ggtt_bound_view(struct drm_i915_gem_object *o,
                                  const struct i915_ggtt_view *view)
 {
-       struct i915_address_space *ggtt = i915_obj_to_ggtt(o);
+       struct i915_address_space *ggtt_vm = i915_obj_to_ggtt_vm(o);
        struct i915_vma *vma;
 
        list_for_each_entry(vma, &o->vma_list, obj_link)
-               if (vma->vm == ggtt &&
+               if (vma->vm == ggtt_vm &&
                    i915_ggtt_view_equal(&vma->ggtt_view, view) &&
                    drm_mm_node_allocated(&vma->node))
                        return true;
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c 
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index c23513b..ec51b76 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1998,6 +1998,8 @@ static int gen6_ppgtt_allocate_page_directories(struct 
i915_hw_ppgtt *ppgtt)
        struct i915_address_space *vm = &ppgtt->base;
        struct drm_device *dev = ppgtt->base.dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_ggtt *ggtt = &dev_priv->ggtt;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
        bool retried = false;
        int ret;
 
@@ -2005,23 +2007,23 @@ static int gen6_ppgtt_allocate_page_directories(struct 
i915_hw_ppgtt *ppgtt)
         * allocator works in address space sizes, so it's multiplied by page
         * size. We allocate at the top of the GTT to avoid fragmentation.
         */
-       BUG_ON(!drm_mm_initialized(&dev_priv->ggtt.base.mm));
+       BUG_ON(!drm_mm_initialized(&ggtt_vm->mm));
 
        ret = gen6_init_scratch(vm);
        if (ret)
                return ret;
 
 alloc:
-       ret = drm_mm_insert_node_in_range_generic(&dev_priv->ggtt.base.mm,
+       ret = drm_mm_insert_node_in_range_generic(&ggtt_vm->mm,
                                                  &ppgtt->node, GEN6_PD_SIZE,
                                                  GEN6_PD_ALIGN, 0,
-                                                 0, dev_priv->ggtt.base.total,
+                                                 0, ggtt_vm->total,
                                                  DRM_MM_TOPDOWN);
        if (ret == -ENOSPC && !retried) {
-               ret = i915_gem_evict_something(dev, &dev_priv->ggtt.base,
+               ret = i915_gem_evict_something(dev, ggtt_vm,
                                               GEN6_PD_SIZE, GEN6_PD_ALIGN,
                                               I915_CACHE_NONE,
-                                              0, dev_priv->ggtt.base.total,
+                                              0, ggtt_vm->total,
                                               0);
                if (ret)
                        goto err_out;
@@ -2034,7 +2036,7 @@ alloc:
                goto err_out;
 
 
-       if (ppgtt->node.start < dev_priv->ggtt.mappable_end)
+       if (ppgtt->node.start < ggtt->mappable_end)
                DRM_DEBUG("Forced to use aperture for PDEs\n");
 
        return 0;
@@ -2063,9 +2065,10 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
 {
        struct drm_device *dev = ppgtt->base.dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
        int ret;
 
-       ppgtt->base.pte_encode = dev_priv->ggtt.base.pte_encode;
+       ppgtt->base.pte_encode = ggtt_vm->pte_encode;
        if (IS_GEN6(dev)) {
                ppgtt->switch_mm = gen6_mm_switch;
        } else if (IS_HASWELL(dev)) {
@@ -2325,6 +2328,7 @@ static void i915_ggtt_flush(struct drm_i915_private 
*dev_priv)
 void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
 
        /* Don't bother messing with faults pre GEN6 as we have little
         * documentation supporting that it's a good idea.
@@ -2334,10 +2338,8 @@ void i915_gem_suspend_gtt_mappings(struct drm_device 
*dev)
 
        i915_check_and_clear_faults(dev);
 
-       dev_priv->ggtt.base.clear_range(&dev_priv->ggtt.base,
-                                      dev_priv->ggtt.base.start,
-                                      dev_priv->ggtt.base.total,
-                                      true);
+       ggtt_vm->clear_range(ggtt_vm, ggtt_vm->start, ggtt_vm->total,
+                            true);
 
        i915_ggtt_flush(dev_priv);
 }
@@ -2801,8 +2803,8 @@ static int i915_gem_setup_global_gtt(struct drm_device 
*dev,
                                        true);
 
                dev_priv->mm.aliasing_ppgtt = ppgtt;
-               WARN_ON(dev_priv->ggtt.base.bind_vma != ggtt_bind_vma);
-               dev_priv->ggtt.base.bind_vma = aliasing_gtt_bind_vma;
+               WARN_ON(ggtt_vm->bind_vma != ggtt_bind_vma);
+               ggtt_vm->bind_vma = aliasing_gtt_bind_vma;
        }
 
        return 0;
@@ -2830,7 +2832,7 @@ void i915_gem_init_ggtt(struct drm_device *dev)
 void i915_cleanup_ggtt_hw(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
-       struct i915_address_space *vm = &dev_priv->ggtt.base;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
 
        if (dev_priv->mm.aliasing_ppgtt) {
                struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
@@ -2840,15 +2842,15 @@ void i915_cleanup_ggtt_hw(struct drm_device *dev)
 
        i915_gem_cleanup_stolen(dev);
 
-       if (drm_mm_initialized(&vm->mm)) {
+       if (drm_mm_initialized(&ggtt_vm->mm)) {
                if (intel_vgpu_active(dev))
                        intel_vgt_deballoon();
 
-               drm_mm_takedown(&vm->mm);
-               list_del(&vm->global_link);
+               drm_mm_takedown(&ggtt_vm->mm);
+               list_del(&ggtt_vm->global_link);
        }
 
-       vm->cleanup(vm);
+       ggtt_vm->cleanup(ggtt_vm);
 }
 
 static unsigned int gen6_get_total_gtt_size(u16 snb_gmch_ctl)
@@ -2933,6 +2935,7 @@ static int ggtt_probe_common(struct drm_device *dev,
                             size_t gtt_size)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
        struct i915_page_scratch *scratch_page;
        phys_addr_t gtt_phys_addr;
 
@@ -2964,7 +2967,7 @@ static int ggtt_probe_common(struct drm_device *dev,
                return PTR_ERR(scratch_page);
        }
 
-       dev_priv->ggtt.base.scratch_page = scratch_page;
+       ggtt_vm->scratch_page = scratch_page;
 
        return 0;
 }
@@ -3044,7 +3047,8 @@ static void chv_setup_private_ppat(struct 
drm_i915_private *dev_priv)
 
 static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 {
-       struct drm_device *dev = ggtt->base.dev;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
+       struct drm_device *dev = ggtt_vm->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        u16 snb_gmch_ctl;
        int ret;
@@ -3069,7 +3073,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
                ggtt->size = gen8_get_total_gtt_size(snb_gmch_ctl);
        }
 
-       ggtt->base.total = (ggtt->size / sizeof(gen8_pte_t)) << PAGE_SHIFT;
+       ggtt_vm->total = (ggtt->size / sizeof(gen8_pte_t)) << PAGE_SHIFT;
 
        if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev))
                chv_setup_private_ppat(dev_priv);
@@ -3078,21 +3082,21 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 
        ret = ggtt_probe_common(dev, ggtt->size);
 
-       ggtt->base.clear_range = gen8_ggtt_clear_range;
+       ggtt_vm->clear_range = gen8_ggtt_clear_range;
        if (IS_CHERRYVIEW(dev_priv))
-               ggtt->base.insert_entries = gen8_ggtt_insert_entries__BKL;
+               ggtt_vm->insert_entries = gen8_ggtt_insert_entries__BKL;
        else
-               ggtt->base.insert_entries = gen8_ggtt_insert_entries;
-       ggtt->base.bind_vma = ggtt_bind_vma;
-       ggtt->base.unbind_vma = ggtt_unbind_vma;
-
+               ggtt_vm->insert_entries = gen8_ggtt_insert_entries;
+       ggtt_vm->bind_vma = ggtt_bind_vma;
+       ggtt_vm->unbind_vma = ggtt_unbind_vma;
 
        return ret;
 }
 
 static int gen6_gmch_probe(struct i915_ggtt *ggtt)
 {
-       struct drm_device *dev = ggtt->base.dev;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
+       struct drm_device *dev = ggtt_vm->dev;
        u16 snb_gmch_ctl;
        int ret;
 
@@ -3113,14 +3117,14 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt)
 
        ggtt->stolen_size = gen6_get_stolen_size(snb_gmch_ctl);
        ggtt->size = gen6_get_total_gtt_size(snb_gmch_ctl);
-       ggtt->base.total = (ggtt->size / sizeof(gen6_pte_t)) << PAGE_SHIFT;
+       ggtt_vm->total = (ggtt->size / sizeof(gen6_pte_t)) << PAGE_SHIFT;
 
        ret = ggtt_probe_common(dev, ggtt->size);
 
-       ggtt->base.clear_range = gen6_ggtt_clear_range;
-       ggtt->base.insert_entries = gen6_ggtt_insert_entries;
-       ggtt->base.bind_vma = ggtt_bind_vma;
-       ggtt->base.unbind_vma = ggtt_unbind_vma;
+       ggtt_vm->clear_range = gen6_ggtt_clear_range;
+       ggtt_vm->insert_entries = gen6_ggtt_insert_entries;
+       ggtt_vm->bind_vma = ggtt_bind_vma;
+       ggtt_vm->unbind_vma = ggtt_unbind_vma;
 
        return ret;
 }
@@ -3135,7 +3139,8 @@ static void gen6_gmch_remove(struct i915_address_space 
*vm)
 
 static int i915_gmch_probe(struct i915_ggtt *ggtt)
 {
-       struct drm_device *dev = ggtt->base.dev;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
+       struct drm_device *dev = ggtt_vm->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        int ret;
 
@@ -3149,10 +3154,10 @@ static int i915_gmch_probe(struct i915_ggtt *ggtt)
                      &ggtt->mappable_base, &ggtt->mappable_end);
 
        ggtt->do_idle_maps = needs_idle_maps(dev_priv->dev);
-       ggtt->base.insert_entries = i915_ggtt_insert_entries;
-       ggtt->base.clear_range = i915_ggtt_clear_range;
-       ggtt->base.bind_vma = ggtt_bind_vma;
-       ggtt->base.unbind_vma = ggtt_unbind_vma;
+       ggtt_vm->insert_entries = i915_ggtt_insert_entries;
+       ggtt_vm->clear_range = i915_ggtt_clear_range;
+       ggtt_vm->bind_vma = ggtt_bind_vma;
+       ggtt_vm->unbind_vma = ggtt_unbind_vma;
 
        if (unlikely(ggtt->do_idle_maps))
                DRM_INFO("applying Ironlake quirks for intel_iommu\n");
@@ -3173,42 +3178,43 @@ int i915_init_ggtt_hw(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct i915_ggtt *ggtt = &dev_priv->ggtt;
+       struct i915_address_space *ggtt_vm = &ggtt->base;
        int ret;
 
        if (INTEL_INFO(dev)->gen <= 5) {
                ggtt->probe = i915_gmch_probe;
-               ggtt->base.cleanup = i915_gmch_remove;
+               ggtt_vm->cleanup = i915_gmch_remove;
        } else if (INTEL_INFO(dev)->gen < 8) {
                ggtt->probe = gen6_gmch_probe;
-               ggtt->base.cleanup = gen6_gmch_remove;
+               ggtt_vm->cleanup = gen6_gmch_remove;
                if (IS_HASWELL(dev) && dev_priv->ellc_size)
-                       ggtt->base.pte_encode = iris_pte_encode;
+                       ggtt_vm->pte_encode = iris_pte_encode;
                else if (IS_HASWELL(dev))
-                       ggtt->base.pte_encode = hsw_pte_encode;
+                       ggtt_vm->pte_encode = hsw_pte_encode;
                else if (IS_VALLEYVIEW(dev))
-                       ggtt->base.pte_encode = byt_pte_encode;
+                       ggtt_vm->pte_encode = byt_pte_encode;
                else if (INTEL_INFO(dev)->gen >= 7)
-                       ggtt->base.pte_encode = ivb_pte_encode;
+                       ggtt_vm->pte_encode = ivb_pte_encode;
                else
-                       ggtt->base.pte_encode = snb_pte_encode;
+                       ggtt_vm->pte_encode = snb_pte_encode;
        } else {
                ggtt->probe = gen8_gmch_probe;
-               ggtt->base.cleanup = gen6_gmch_remove;
+               ggtt_vm->cleanup = gen6_gmch_remove;
        }
 
-       ggtt->base.dev = dev;
-       ggtt->base.is_ggtt = true;
+       ggtt_vm->dev = dev;
+       ggtt_vm->is_ggtt = true;
 
        ret = ggtt->probe(ggtt);
        if (ret)
                return ret;
 
-       if ((ggtt->base.total - 1) >> 32) {
+       if ((ggtt_vm->total - 1) >> 32) {
                DRM_ERROR("We never expected a Global GTT with more than 32bits"
                          "of address space! Found %lldM!\n",
-                         ggtt->base.total >> 20);
-               ggtt->base.total = 1ULL << 32;
-               ggtt->mappable_end = min(ggtt->mappable_end, ggtt->base.total);
+                         ggtt_vm->total >> 20);
+               ggtt_vm->total = 1ULL << 32;
+               ggtt->mappable_end = min(ggtt->mappable_end, ggtt_vm->total);
        }
 
        /*
@@ -3221,7 +3227,7 @@ int i915_init_ggtt_hw(struct drm_device *dev)
 
        /* GMADR is the PCI mmio aperture into the global GTT. */
        DRM_INFO("Memory usable by graphics device = %lluM\n",
-                ggtt->base.total >> 20);
+                ggtt_vm->total >> 20);
        DRM_DEBUG_DRIVER("GMADR size = %lldM\n", ggtt->mappable_end >> 20);
        DRM_DEBUG_DRIVER("GTT stolen size = %zdM\n", ggtt->stolen_size >> 20);
 #ifdef CONFIG_INTEL_IOMMU
@@ -3240,7 +3246,7 @@ int i915_init_ggtt_hw(struct drm_device *dev)
        return 0;
 
 out_gtt_cleanup:
-       ggtt->base.cleanup(&dev_priv->ggtt.base);
+       ggtt_vm->cleanup(ggtt_vm);
 
        return ret;
 }
@@ -3248,25 +3254,22 @@ out_gtt_cleanup:
 void i915_gem_restore_gtt_mappings(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
        struct drm_i915_gem_object *obj;
-       struct i915_address_space *vm;
        struct i915_vma *vma;
        bool flush;
 
        i915_check_and_clear_faults(dev);
 
        /* First fill our portion of the GTT with scratch pages */
-       dev_priv->ggtt.base.clear_range(&dev_priv->ggtt.base,
-                                      dev_priv->ggtt.base.start,
-                                      dev_priv->ggtt.base.total,
-                                      true);
+       ggtt_vm->clear_range(ggtt_vm, ggtt_vm->start, ggtt_vm->total,
+                            true);
 
        /* Cache flush objects bound into GGTT and rebind them. */
-       vm = &dev_priv->ggtt.base;
        list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
                flush = false;
                list_for_each_entry(vma, &obj->vma_list, obj_link) {
-                       if (vma->vm != vm)
+                       if (vma->vm != ggtt_vm)
                                continue;
 
                        WARN_ON(i915_vma_bind(vma, obj->cache_level,
@@ -3289,6 +3292,8 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
        }
 
        if (USES_PPGTT(dev)) {
+               struct i915_address_space *vm;
+
                list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
                        /* TODO: Perhaps it shouldn't be gen6 specific */
 
@@ -3356,7 +3361,7 @@ struct i915_vma *
 i915_gem_obj_lookup_or_create_ggtt_vma(struct drm_i915_gem_object *obj,
                                       const struct i915_ggtt_view *view)
 {
-       struct i915_address_space *ggtt = i915_obj_to_ggtt(obj);
+       struct i915_address_space *ggtt_vm = i915_obj_to_ggtt_vm(obj);
        struct i915_vma *vma;
 
        if (WARN_ON(!view))
@@ -3368,7 +3373,7 @@ i915_gem_obj_lookup_or_create_ggtt_vma(struct 
drm_i915_gem_object *obj,
                return vma;
 
        if (!vma)
-               vma = __i915_gem_vma_create(obj, ggtt, view);
+               vma = __i915_gem_vma_create(obj, ggtt_vm, view);
 
        return vma;
 
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c 
b/drivers/gpu/drm/i915/i915_gem_stolen.c
index de891c9..f2b71a4 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -629,7 +629,7 @@ i915_gem_object_create_stolen_for_preallocated(struct 
drm_device *dev,
                                               u32 size)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
-       struct i915_address_space *ggtt = &dev_priv->ggtt.base;
+       struct i915_address_space *ggtt_vm = &dev_priv->ggtt.base;
        struct drm_i915_gem_object *obj;
        struct drm_mm_node *stolen;
        struct i915_vma *vma;
@@ -675,7 +675,7 @@ i915_gem_object_create_stolen_for_preallocated(struct 
drm_device *dev,
        if (gtt_offset == I915_GTT_OFFSET_NONE)
                return obj;
 
-       vma = i915_gem_obj_lookup_or_create_vma(obj, ggtt);
+       vma = i915_gem_obj_lookup_or_create_vma(obj, ggtt_vm);
        if (IS_ERR(vma)) {
                ret = PTR_ERR(vma);
                goto err;
@@ -688,8 +688,8 @@ i915_gem_object_create_stolen_for_preallocated(struct 
drm_device *dev,
         */
        vma->node.start = gtt_offset;
        vma->node.size = size;
-       if (drm_mm_initialized(&ggtt->mm)) {
-               ret = drm_mm_reserve_node(&ggtt->mm, &vma->node);
+       if (drm_mm_initialized(&ggtt_vm->mm)) {
+               ret = drm_mm_reserve_node(&ggtt_vm->mm, &vma->node);
                if (ret) {
                        DRM_DEBUG_KMS("failed to allocate stolen GTT space\n");
                        goto err;
@@ -697,7 +697,7 @@ i915_gem_object_create_stolen_for_preallocated(struct 
drm_device *dev,
 
                vma->bound |= GLOBAL_BIND;
                __i915_vma_set_map_and_fenceable(vma);
-               list_add_tail(&vma->vm_link, &ggtt->inactive_list);
+               list_add_tail(&vma->vm_link, &ggtt_vm->inactive_list);
        }
 
        list_add_tail(&obj->global_list, &dev_priv->mm.bound_list);
-- 
2.5.5

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