In an address space there can be sprinkling of I915_COLOR_UNEVICTABLE
nodes, which lack a parent vma. For platforms with cache coloring we
might be very unlucky and abut with such a node thinking we can simply
unbind the vma.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_evict.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 4518b9b35c3d..9e462c6a4c6a 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -227,6 +227,10 @@ i915_gem_evict_something(struct i915_address_space *vm,
}
while (ret == 0 && (node = drm_mm_scan_color_evict(&scan))) {
+ /* If we find any non-objects (!vma), we cannot evict them */
+ if (node->color == I915_COLOR_UNEVICTABLE)
+ return -ENOSPC;
+
vma = container_of(node, struct i915_vma, node);
ret = __i915_vma_unbind(vma);
}
--
2.20.1
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