In a 48b world, users can try to allocate buffers bigger than 4GB; in
these cases it is important that size is a 64b variable.
Also added a warning for illegal bind with size = 0.
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 5 +++--
drivers/gpu/drm/i915/i915_gem_gtt.c | 3 +++
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index a0bff41..ebfb789 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3718,7 +3718,8 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj,
{
struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 size, fence_size, fence_alignment, unfenced_alignment;
+ u32 fence_alignment, unfenced_alignment;
+ u64 size, fence_size;
u64 start =
flags & PIN_OFFSET_BIAS ? flags & PIN_OFFSET_MASK : 0;
u64 end =
@@ -3777,7 +3778,7 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj,
* attempt to find space.
*/
if (size > end) {
- DRM_DEBUG("Attempting to bind an object (view type=%u) larger than the aperture: size=%u > %s aperture=%llu\n",
+ DRM_DEBUG("Attempting to bind an object (view type=%u) larger than the aperture: size=%llu > %s aperture=%llu\n",
ggtt_view ? ggtt_view->type : 0,
size,
flags & PIN_MAPPABLE ? "mappable" : "total",
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 449a245..900bce6 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3312,6 +3312,9 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
if (WARN_ON(flags == 0))
return -EINVAL;
+ if (WARN_ON(vma->node.size == 0))
+ return -EINVAL;
+
bind_flags = 0;
if (flags & PIN_GLOBAL)
bind_flags |= GLOBAL_BIND;
--
2.4.5
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