Querying a BO's cache level can help clients wishing to map the buffer.
For example, an Ironlake machine could query the buffer to determine it
should use GTT mappings, while a Sandybridge machine running the same
code would prefer to use regular CPU mapped buffers since the cache is
coherent.
Cc:
Querying a BO's cache level can help clients wishing to map the buffer.
For example, an Ironlake machine could query the buffer to determine it
should use GTT mappings, while a Sandybridge machine running the same
code would prefer to use regular CPU mapped buffers since the cache is
coherent.
Cc:
