commit: 27c1cbd06a7620b354cbb363834f3bb8df4f410d From: Chris Wilson <[email protected]> Date: Mon, 9 Apr 2012 13:59:46 +0100 Subject: drm/i915/ringbuffer: Exclude last 2 cachlines of ring on 845g
The 845g shares the errata with i830 whereby executing a command within 2 cachelines of the end of the ringbuffer may cause a GPU hang. Signed-off-by: Chris Wilson <[email protected]> Cc: [email protected] Signed-off-by: Daniel Vetter <[email protected]> --- drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index e25581a..f75806e 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1038,7 +1038,7 @@ int intel_init_ring_buffer(struct drm_device *dev, * of the buffer. */ ring->effective_size = ring->size; - if (IS_I830(ring->dev)) + if (IS_I830(ring->dev) || IS_845G(ring->dev)) ring->effective_size -= 128; return 0; -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
