[Mesa-dev] [PATCH 00/14] RadeonSI: SDMA texture copy rewrite

Marek Olšák maraeo at gmail.com
Fri May 6 10:09:56 UTC 2016

On Fri, May 6, 2016 at 12:01 PM, Michel Dänzer <michel at daenzer.net> wrote:
> On 06.05.2016 02:01, Marek Olšák wrote:
>>> There is one more hardware limitation that can cause VM faults with T2L copies and needs a workaround. The exact workaround is still under discussion, but I think this is good enough for review already.
>> BTW, the T2L VM fault is completely harmless. It's caused by SDMA
>> reading more entries from the page directory than needed. The
>> workaround can be added in a follow-up patch.
> So you're proposing pushing these patches in a form which results in
> dmesg being flooded by GPUVM faults? If so, not sure that's a good idea,
> it'll probably result in bug reports.

Unlikely, I haven't been able to reproduce it even with piglit and
that crazy DMA test. It came from a discussion with hw guys that such
a bug exists. I can squash the fix with the right patch before


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