Assume that unevictable nodes are not in the GTT and so we can ignore
page boundary concerns, and so allow regular nodes to abutt against
irregular unevictable nodes.

Signed-off-by: Chris Wilson <[email protected]>
---
 drivers/gpu/drm/i915/i915_drv.h       |  2 --
 drivers/gpu/drm/i915/i915_gem_evict.c |  6 ++++--
 drivers/gpu/drm/i915/i915_vma.h       | 10 +++++++++-
 drivers/gpu/drm/i915/i915_vma_types.h |  2 ++
 4 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 99cf861df92d..69c5a185ecff 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -357,8 +357,6 @@ enum i915_cache_level {
        I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
 };
 
-#define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
-
 struct intel_fbc {
        /* This is always the inner lock when overlapping with struct_mutex and
         * it's the outer lock when overlapping with stolen_lock. */
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c 
b/drivers/gpu/drm/i915/i915_gem_evict.c
index 4d2d59a9942b..aef88fdb9f66 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -313,11 +313,13 @@ int i915_gem_evict_for_node(struct i915_address_space *vm,
                 */
                if (i915_vm_has_cache_coloring(vm)) {
                        if (node->start + node->size == target->start) {
-                               if (node->color == target->color)
+                               if (i915_node_color_matches(node,
+                                                           target->color))
                                        continue;
                        }
                        if (node->start == target->start + target->size) {
-                               if (node->color == target->color)
+                               if (i915_node_color_matches(node,
+                                                           target->color))
                                        continue;
                        }
                }
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index a64adc8c883b..dac953815118 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -283,10 +283,18 @@ static inline bool i915_vma_is_bound(const struct 
i915_vma *vma,
        return atomic_read(&vma->flags) & where;
 }
 
+static inline bool i915_node_color_matches(const struct drm_mm_node *node,
+                                          unsigned long color)
+{
+       return (node->color | color) == I915_COLOR_UNEVICTABLE ||
+               node->color == color;
+}
+
 static inline bool i915_node_color_differs(const struct drm_mm_node *node,
                                           unsigned long color)
 {
-       return drm_mm_node_allocated(node) && node->color != color;
+       return drm_mm_node_allocated(node) &&
+               !i915_node_color_matches(node, color);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/i915_vma_types.h 
b/drivers/gpu/drm/i915/i915_vma_types.h
index f5cb848b7a7e..e72a07692a64 100644
--- a/drivers/gpu/drm/i915/i915_vma_types.h
+++ b/drivers/gpu/drm/i915/i915_vma_types.h
@@ -95,6 +95,8 @@ enum i915_cache_level;
  *
  */
 
+#define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
+
 struct intel_remapped_plane_info {
        /* in gtt pages */
        unsigned int width, height, stride, offset;
-- 
2.20.1

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