[PATCH 43/48] staging: etnaviv: map all buffers to the GPU

[Russell King - ARM Linux]

On Fri, Sep 25, 2015 at 01:57:55PM +0200, Lucas Stach wrote:
> This redefines how we do cache handling in the following way:
> 
> All buffer are pushed into the GPU domain initially, this will only
> be done when populating the buffers backing store, but for simplicity
> userspace can assume that the buffer is owned by the GPU as soon as it
> constructs a GEM handle. The memory is only implicitly pulled back into
> the CPU domain when destroying the handle.
> 
> Uncached and writecombined buffers can stay in the GPU domain for their
> entire lifetime, as any modification to them will be seen by the GPU
> either immediately or latest when the write buffers get flushed when
> linking a new submit into the GPUs command stream.
> 
> If any modifications needs to be done to a cached buffer they must be
> pulled into the CPU domain before and pushed to the GPU afterwards in
> an explicit manner.
> 
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>

Applied, thanks.

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