[Mesa-dev] [PATCH] r600g, radeonsi: add debug option which forces DMA for copy_region and blit

[Andy Furniss]

Marek Olšák wrote:
> From: Marek Olšák <marek.olsak at amd.com>
>
> ---
>
> Turn this on, run piglit, and pray for mercy.
> It might be interesting to see if it makes 3D apps any faster. Or piglit.

Well it's not piglit and I haven't benchmarked anything yet, but I get a 
couple of faults at the start of Unigine Valley.

[20635.429686] radeon 0000:01:00.0: GPU fault detected: 146 0x07bd3d14
[20635.429690] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR 
   0x0000683D
[20635.429691] radeon 0000:01:00.0: 
VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x1D03D014
[20635.429693] VM fault (0x04, vmid 14) at page 26685, write from DMA1 (61)
[20635.429708] radeon 0000:01:00.0: GPU fault detected: 146 0x07bd3d14
[20635.429709] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR 
   0x00000000
[20635.429710] radeon 0000:01:00.0: 
VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x1C03D00C
[20635.429711] VM fault (0x0c, vmid 14) at page 0, read from DMA1 (61)