Re: [PATCH 1/3] drm/radeon: stop poisoning the GART TLB

On 19.06.2014 19:20, Marek Olšák wrote:

Hi Michel,

3.15 doesn't contain Christian's fix yet, so it should be always broken for everybody. The fix is currently only in 3.16.

Alternatively, you can cherry-pick the fix to 3.15, but it doesn't apply cleanly.

That's a good point. Sorry, I should have mentioned I've been testing with the GART poisoning fix backported to 3.15.

There is a workaround in 3.15 which disables sDMA and uses CP DMA for copying buffers. It seems to help Christian's machine, but not mine.

I've been testing with CP DMA on Bonaire FWIW.