Op 28-03-18 om 12:21 schreef Jani Nikula: > On Wed, 28 Mar 2018, Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> wrote: >> Adding a i915_fifo_underrun_reset debugfs file will make it possible >> for IGT tests to clear FIFO underrun fallout at the start of each >> subtest, and make re-enable FBC so tests always have maximum exposure >> to features used by IGT. FIFO underruns and FBC bugs will no longer >> hide when an earlier subtests disables both. >> >> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> >> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105685 >> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105681 > FWIW, ack on the idea, didn't look at the implementation. Well I had a NV12 test that produced FIFO underruns, did some quick testing against the i915_fifo_underrun_reset file and manually writing it does reset FIFO underruns. Immediately after i915_fbc_status still reads "FBC disabled: underrun detected", but this is cleared by the next atomic commit. So I think it works, and can be used for igt in the way I wrote it. ~Maarten _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
