Hi everyone, this series is the next puzzle piece for recoverable page fault handling on Vega and Navi.
It adds a new direct scheduler entity for VM updates which is then used to update page tables during a fault. In other words previously an application doing an invalid memory access would just hang and/or repeat the invalid access over and over again. Now the handling is modified so that the invalid memory access is redirected to the dummy page. This needs the following prerequisites: a) The firmware must be new enough so allow re-routing of page faults. b) Fault retry must be enabled using the amdgpu.noretry=0 parameter. c) Enough free VRAM to allocate page tables to point to the dummy page. The re-routing of page faults current only works on Vega10, so Vega20 and Navi will still need some more time. Please review and/or comment, Christian. _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
