[Intel-gfx] [PATCH] drm/i915/execlists: Lock the request while validating it during promotion

[Joonas Lahtinen]

Quoting Chris Wilson (2019-11-21 10:20:12)
> Since the request is already on the HW as we perform its validation, it
> and even its subsequent barrier may be concurrently retired before we
> process the assertions. If it is retired already and so off the HW, our
> assertions become void and we need to ignore them.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112363
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas