Somehow (i.e. purely experimental evidence from users out there in the wild) using CS flips seems to be implicated in hw context switch hangs. I have no idea why, but let's just try this out. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78960 References: https://bugs.freedesktop.org/show_bug.cgi?id=83677 References: https://bugs.freedesktop.org/show_bug.cgi?id=80660 References: https://bugs.freedesktop.org/show_bug.cgi?id=76314 Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_display.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a4106049e158..e5ece609e9fc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9462,6 +9462,8 @@ static bool use_mmio_flip(struct intel_engine_cs *ring, return true; else if (i915.enable_execlists) return true; + else if (INTEL_FINO(ring->dev)->gen >= 6) + return true; else return ring != obj->ring; } -- 2.1.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
