The patch is here:
https://lists.freedesktop.org/archives/intel-gfx/2017-November/148988.html
On Mon, Feb 10, 2020 at 11:34:07AM -0800, Dongwon Kim wrote:
> Acked-by: Dongwon Kim
>
> It makes lots of sense to make CPU cache operation done only when
> needed. Similar change was already landed in
(mistakenly put a wrong message id in "In-reply-To")
Acked-by: Dongwon Kim
It makes lots of sense to make CPU cache operation done only when
needed. Similar change was already landed in drm-prime and other
vendor specific drivers. We are actually seeing huge performance
boost in a specific cust
Acked-by: Dongwon Kim
It makes lots of sense to make CPU cache operation done only when
needed. Similar change was already landed in drm-prime and other
vendor specific drivers. We are actually seeing huge performance
boost in a specific customer case where dmabuf was used between
camera driver (
dma-bufs are device coherent, with explicit CPU synchronisation provided
via the begin/end cpu access ioctls. As the coherency of the dma-buf is
explicitly defined to be under user control, flushing any caches on
attach/detach of the dma-buf is additional work that doesn't aide the
user in the slig
