drm/i915/gt: Mark up virtual engine uabi_instance

Be sure to initialise the uabi_instance on the virtual engine to the
special invalid value, just in case we ever peek at it from the uAPI.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 750e76b4f9f6 ("drm/i915/gt: Move the [class][inst] lookup for engines onto the GT")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106123921.2543886-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 9813a977bb9d7b5b0387c0c3b2af59cbd3641fd7..f6174e597dd3e10e2618cd1d73346dbc47ecbfb7 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -4606,9 +4606,11 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
        ve->base.gt = siblings[0]->gt;
        ve->base.uncore = siblings[0]->uncore;
        ve->base.id = -1;
+
        ve->base.class = OTHER_CLASS;
        ve->base.uabi_class = I915_ENGINE_CLASS_INVALID;
        ve->base.instance = I915_ENGINE_CLASS_INVALID_VIRTUAL;
+       ve->base.uabi_instance = I915_ENGINE_CLASS_INVALID_VIRTUAL;
 
        /*
         * The decision on whether to submit a request using semaphores