[Intel-gfx] [PATCH 09/10] drm/i915: Reject < 8 byte batches on 830/845

Chris Wilson chris at chris-wilson.co.uk
Mon Dec 14 09:07:50 PST 2015

On Mon, Dec 14, 2015 at 06:23:48PM +0200, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> We use MI_BATCH_BUFFER on 830/845, which means we need to know
> the batch length. If the user passes a bad batch length (< 8)
> the results is most likely a GPU hang. Rejct such batches.
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

Though, do you then remove the discrepancy in the next MI_BB_START

Chris Wilson, Intel Open Source Technology Centre

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