Comment # 14
on bug 84662
from Andy Furniss
(In reply to Michel Dänzer from comment #12) > Created attachment 107391 [details] [review] [review] > Make Mesa behave as if the kernel was older > > (In reply to Andy Furniss from comment #3) > > gallium hud on bad showing different vram gtt usage > > That's very interesting indeed — on the 'good' screenshot, requested and > actual VRAM usage match up almost perfectly, but on the 'bad' one, there's a > large discrepancy. > > With a current kernel, does the bad behaviour start with the same Mesa > commit as the Unigine stutters? > > The attached patch makes Mesa behave the same with current kernels as it > does with older ones which don't have the bisected commit. Does that avoid > the problem? More testing - incomplete but will post initial findings as I don't know when I'll finish. I managed to get older mesa to build with new llvm by applying the build fixes. With mesa on the commit before r600g,radeonsi: Set RADEON_GEM_NO_CPU_ACCESS flag for tiled BOs (I don't know yet exactly what mesa commit changed things) I can with your patch or the stream revert get "good" behavior, this was with a kernel on the "bad" HPD kernel commit. Will test more over time.
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