On 26/08/2019 15.48, Chris Wilson wrote:
> Quoting Abdiel Janulgue (2019-08-26 13:21:02)
>> +int
>> +i915_gem_mmap_dumb(struct drm_file *file,
>> + struct drm_device *dev,
>> + u32 handle,
>> + u64 *offset)
>> +{
>> + struct drm_i915_private *i915 = dev->dev_private;
>> + enum i915_mmap_type mmap_type = HAS_MAPPABLE_APERTURE(i915) ?
>> + I915_MMAP_TYPE_GTT : I915_MMAP_TYPE_OFFSET_WC;
>
> Is there any reason for using GTT if we support WC? The buffer is meant
> to be linear.
> -Chris
>
Actually there seems no reason at all. Yeah dumb BO mmaps should
probably be done via mmap_offset CPU WC mmaps.
-Abdiel
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