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: 42fb60de3129 ("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

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index cb6b6be..5201bb8 100644 (file)
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -519,8 +519,8 @@ static void kill_context(struct i915_gem_context *ctx)
        kill_stale_engines(ctx);
 }
 
-static int engines_notify(struct i915_sw_fence *fence,
-                         enum i915_sw_fence_notify state)
+static int __i915_sw_fence_call
+engines_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
 {
        struct i915_gem_engines *engines =
                container_of(fence, typeof(*engines), fence);