On Wed, Mar 02, 2016 at 04:48:29PM +0200, Mika Kuoppala wrote: > With full-ppgtt, it takes the GPU an eon to traverse the entire 256PiB > address space, causing a loop to be detected. Under the current scheme, > if ACTHD walks off the end of a batch buffer and into an empty > address space, we "never" detect the hang. If we always increment the > score as the ACTHD is progressing then we will eventually timeout (after > ~46.5s (31 * 1.5s) without advancing onto a new batch). To counter act > this, increase the amount we reduce the score for good batches, so that > only a series of almost-bad batches trigger a full reset. DoS detection > suffers slightly but series of long running shader tests will benefit. > > Based on a patch from Chris Wilson. > > Testcase: igt/drv_hangman/hangcheck-unterminated > Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
