On Fri, Mar 2, 2012 at 23:53, Rob Clark wrote:
> nitially the expectation was that userspace would not pass a buffer
> to multiple subsystems for writing (or that if it did, it would get
> the undefined results that one could expect).. so dealing w/
> synchronization was punted.
Imo synchronizat
On Fri, Mar 2, 2012 at 4:38 PM, Chris Wilson wrote:
> On Thu, 1 Mar 2012 16:36:00 +0100, Daniel Vetter
> wrote:
>> Big differences to other contenders in the field (like ion) is
>> that this also supports highmem, so we have to split up the cpu
>> access from the kernel side into a prepare and
On Thu, 1 Mar 2012 16:36:00 +0100, Daniel Vetter
wrote:
> Big differences to other contenders in the field (like ion) is
> that this also supports highmem, so we have to split up the cpu
> access from the kernel side into a prepare and a kmap step.
>
> Prepare is allowed to fail and should do e
