[Intel-gfx] [PATCH 2/6] drm/i915: Don't wait for page flips if there was GPU reset

Damien Lespiau damien.lespiau at intel.com
Wed Feb 13 11:23:28 CET 2013


On Tue, Jan 29, 2013 at 06:13:34PM +0200, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> If a GPU reset occurs while a page flip has been submitted to the ring,
> the flip will never complete once the ring has been reset.
> 
> The GPU reset can be detected by sampling the reset_counter before the
> flip is submitted, and then while waiting for the flip, the sampled
> counter is compared with the current reset_counter value.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Damien Lespiau <damien.lespiau at intel.com>

You might want to rename reset_counter to flip_reset_counter to indicate
this field is specific to the flipping code. Other parts of the code
might need something similar as well?

-- 
Damien



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