2013/11/21 Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>: > On Thu, Nov 21, 2013 at 01:47:26PM -0200, Paulo Zanoni wrote: >> From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> >> >> So we'll get a fault when someone tries to access the mmap, then we'll >> wake up from D3. > > Harsh. Very harsh. Is the GTT completely off-limits under pc8 Under D3, not PC8. > , or is it > only the GTT access to the display engine? i.e. could we get away with > only killing some of the mmaps? I don't have any documentation describing what should work and what shouldn't: all I know comes from our test suite, function gem_mmap_subtest: http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/tree/tests/pm_pc8.c#n927 . On that test, we don't use the buffers on the display engine. We just do gem_create(), then gem_mmap__gtt(), write values to the buff, put the device in D3, then try to read the buffer contents and see if it is what we wrote. So I imagine the answer to your question is probably "no". If you have more ideas of tests I could write that would help answering your questions, please tell me:) > -Chris > > -- > Chris Wilson, Intel Open Source Technology Centre -- Paulo Zanoni _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
