drm/i915/gem: Mark up sw-fence notify function
The sw-fence notify function requires to be at least 4-byte aligned so that we can use the low bits in the function pointer for internal fence flags. Make it so. References: https://gitlab.freedesktop.org/drm/intel/issues/1433 Fixes: 42fb60de ("drm/i915/gem: Don't leak non-persistent requests on changing engines") Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200311221739.30375-1-chris@chris-wilson.co.uk
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