On Sat, Dec 27, 2008 at 2:35 AM, Maarten Maathuis <[email protected]> wrote: > I'm doing some testing/coding on the ng branches and i've run into > some problems, namely that i get PROTECTION_ERRORS after some time. It > seems most common when two two dma's happen very close together on the > same piece of memory (no hard proof to back this up, just something i > noticed). I'm using the dma engine quite heavily and i've pretty much > narrowed it down to that. I'm wondering if anyone has ever had such > problems or knows of some special sync that is needed for m2mf. I'm > doing copy, map, unmap, copy back for pretty much everything. About 10 > secs of gtkperf is enough to trigger it. I've gone as far as placing > an NVSync after every dma transfer.
I should note (in hinsight) that a lot of closely spaced dma transfers occur on the same piece of memory. > > I'd appreciate any kind of hint. > > Maarten. > _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
