Quoting Lionel Landwerlin (2018-05-11 15:14:13) > My understanding of the virtual memory addressing from the GPU is limited... > But how can the GPU poke at the kernel's allocated data? > I thought we mapped into the GPU's address space only what is allocated > through gem. Correct. The HW should only be accessing the pages through the GTT and the GTT should only contain known pages (or a pointer to the scratch page). There is maybe a hole where we are freeing the memory before the HW has finished using it (still writing through stale TLB and whatnot even though the system has reallocated the pages), but other than that quite, quite scary. Hence this awooga. -Chris
