On Mon, Feb 06, 2017 at 03:04:55PM +0800, Zhi Wang wrote: > Aliasing PPGTT mode is broken due to recent changes. Mostly boot the > system with i915.enable_ppgtt=1 will lead a kernel crash. > > This patch fixes this problem by: > > - PPGTT page table will not be shrinkable if working under aliasing > PPGTT mode. Not that keen on adding yet another special case into the code. In the patches I sent, the idea was to keep the PD structure from the aliasing_ppgtt preallocation by keeping the used_pte count positive (and so keeping the entire tree marked as in-use). > - Load the root pointers of the PPGTT page table during the context > initialization, as currently the "LRI PDPs updating" magic only works > under full PPGTT mode and also GVT-g doesn't support LRI PDP updating. That is incorrect, they are loaded into the context image before submission. If you want to make sure they are unchanging so that lite-restore under g-GVT works, that is another matter. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
