[PATCH 0/6] Radeon memory management improvements

[Michel Dänzer]

On Mon, 2014-02-24 at 16:20 +0100, Marek Olšák wrote:
> 
> 2) Add support for uncached GTT. I think it should improve performance
> for dGPUs under memory pressure, but some testing needs to be done to
> confirm that. Uncached GTT doesn't seem to work for me on Evergreen,
> but it's said to be working on some later chips.

FWIW, I think the issue is more likely with the code or your system than
with the GPU: fglrx has always been using unsnooped GPU mappings with
write-combined CPU mappings with PCIe as well. I'm not sure how they
choose that vs. snooped and cacheable mappings though.


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer