On Wed, Sep 04, 2019 at 05:02:21PM +0200, Christian König wrote: > 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. In my side, I found "notretry" parameter not workable for vmid 0 vm faults. If the same observation in your side, I'd like give a check. Thanks, Ray > 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 > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
