Quoting Daniele Ceraolo Spurio (2018-10-15 23:10:08) > The ENTER/EXIT_S_STATE actions queue the save/restore operation in GuC > FW and then return, so waiting on the H2H is not enough to guarantee > GuC is done. > When all the processing is done, GuC writes 0 to scratch register 14, > so we can poll on that. Note that GuC does not ensure that the value > in the register is different from 0 while the action is in progress > so we need to take care of that ourselves as well. > > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx> > Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx> Explains itself very well, Acked-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
