[Intel-gfx] [PATCH 13/15] drm/i915: Stop setting wraparound seqno on initialisation

[Dave Gordon]

On 29/11/15 08:48, Chris Wilson wrote:
> We have testcases to ensure that seqno wraparound works fine, so we can
> forgo forcing everyone to encounter seqno wraparound during early
> uptime. seqno wraparound incurs a full GPU stall so not forcing it
> will eliminate one jitter from the early system.
>
> Advancing the global next_seqno after a GPU reset is equally pointless.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

The real bug is that seqno wraparound forces GPU idle, can we fix that 
instead?

.Dave.