On Wed, Nov 23, 2016 at 6:00 PM, Jay Cornwall <jay at jcornwall.me> wrote: > On Wed, Nov 23, 2016, at 14:27, Alex Deucher wrote: >> It's per queue not per pipe. > > Are you sure? I was under the impression that EOP queeus were per-pipe > on Gfx7 and per-queue on Gfx8 onwards (to support context save/restore). > It's also hinted at by the register name (HPD == Hardware Pipe > Descriptor, HQD == Hardware Queue Descriptor). No, I'm not sure. I have a patch set for amdgpu to leave the fb_location as programmed by the vbios rather than reprogramming which resulted in vram not being at 0 in the GPU's address space. I then got ring failures on the compute queues until I made the eops per queue. It could be something else, but this seemed to fix it. Alex
