[Bug 83500] si_dma_copy_tile causes GPU hangs

https://bugs.freedesktop.org/show_bug.cgi?id=83500

--- Comment #4 from Christian König deathsimple@vodafone.de --- (In reply to comment #3)

Anyway, in the command stream dump you provided before, it looked like the tiling parameters were totally bogus, mostly all 0. I suspect this needs more investigation.

Yeah, that's what I noticed immediately as well. Maybe attach a gdb to X, set a breakpoint to si_dma_copy_tile and check what those parameters usually look like.

If they aren't usually all zero (which is likely) we should figure out why they are zero in this special case.