[PATCH 1/3] drm/radeon: Disable dma rings for bo moves on r6xx

[Ilija Hadzic]

On Fri, 12 Jul 2013, Christian König wrote:

> Hi Ilija,
>
> well that's very interesting and no it's quite unlikely that this is cause by 
> the DMA ring because the radeon_sa_bo structure should be allocated on system 
> memory and the GPU can usually only access it if you map it through GART.
>

OK that's good information to know. I'll do some more investigation on my 
end.

> Is that easily reproducible for you? Is there already an open bugreport?
>

It typically happens out of the blue after several days of running, but 
it happens consistently (just like padding the radeon_sa_bo structure 
consistently suppresses the problem).

However, like I said, my kernel is full of my own patches that don't live 
in the upstream tree, so I am not excluding the possibility that one of my 
hacks introduced the problem (though, I find it unlikely).

I have not yet opened the bug report, because I first want to reproduce 
the problem with the upstream kernel that is free of my hacks. As soon as
I do that, I'll write the ticket.

-- Ilija