Quoting Chris Wilson (2018-06-10 22:43:13) > When we update the gen6 ppgtt page directories, we do so by writing the > new address into a reserved slot in the GGTT. It appears that when the > GPU reads that entry from the gsm, it uses its small cache and that we > need to invalidate that cache after writing. We don't see an issue > currently as we prefill the ppgtt page directories on creation; and only > create the single aliasing_ppgtt long before we start using the GGTT > (and so before the cache mayhave a conflicting entry). "may have" > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> > Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> Regards, Joonas _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
