On 2020-09-16 18:46, Rob Herring wrote:
On Wed, Sep 16, 2020 at 11:04 AM Alyssa Rosenzweig
wrote:
So I get a performance regression with the dma-coherent approach, even if it's
clearly the cleaner.
That's bizarre -- this should really be the faster of the two.
Coherency may not be free. C
> The DDK blob has the ability to mark only certain areas of memory as
> coherent for performance reasons. For simple things like kmscube I would
> expect that it's basically write-only from the CPU and almost all memory the
> GPU touches isn't touched by the CPU. I.e. coherency isn't helping and t
On 17/09/2020 11:51, Tomeu Vizoso wrote:
On 9/17/20 12:38 PM, Steven Price wrote:
On 16/09/2020 18:46, Rob Herring wrote:
On Wed, Sep 16, 2020 at 11:04 AM Alyssa Rosenzweig
wrote:
So I get a performance regression with the dma-coherent approach,
even if it's
clearly the cleaner.
That's b
On 9/17/20 12:38 PM, Steven Price wrote:
On 16/09/2020 18:46, Rob Herring wrote:
On Wed, Sep 16, 2020 at 11:04 AM Alyssa Rosenzweig
wrote:
So I get a performance regression with the dma-coherent approach,
even if it's
clearly the cleaner.
That's bizarre -- this should really be the faster
On 16/09/2020 18:46, Rob Herring wrote:
On Wed, Sep 16, 2020 at 11:04 AM Alyssa Rosenzweig
wrote:
So I get a performance regression with the dma-coherent approach, even if it's
clearly the cleaner.
That's bizarre -- this should really be the faster of the two.
Coherency may not be free. C
> So I get a performance regression with the dma-coherent approach, even if it's
> clearly the cleaner.
That's bizarre -- this should really be the faster of the two.
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On Wed, Sep 16, 2020 at 11:04 AM Alyssa Rosenzweig
wrote:
>
> > So I get a performance regression with the dma-coherent approach, even if
> > it's
> > clearly the cleaner.
>
> That's bizarre -- this should really be the faster of the two.
Coherency may not be free. CortexA9 had something like 4x
Hi Robin,
On 16/09/2020 01:51, Robin Murphy wrote:
> Hi all,
>
> I polished up my original proof-of-concept a little while back, but now
> that I've got my hands on my Juno again I've been able to actually test
> it to my satisfaction, so here are proper patches!
I tested on the Kkadas VIM3, and
Hi all,
I polished up my original proof-of-concept a little while back, but now
that I've got my hands on my Juno again I've been able to actually test
it to my satisfaction, so here are proper patches!
It probably makes sense for patches #1 and #2 to stay together and both
go via drm-misc, provi
