On Wed, Jun 15, 2022 at 12:13:48AM +0530, Ramalingam C wrote: > Do not use reserved requests for virtual engines as this is only > needed for kernel contexts. > > Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> > Suggested-by: Matthew Brost <matthew.brost@xxxxxxxxx> With the patch squashed into the previous patch: Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx> > --- > drivers/gpu/drm/i915/i915_request.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c > index c71905d8e154..f0392b053bca 100644 > --- a/drivers/gpu/drm/i915/i915_request.c > +++ b/drivers/gpu/drm/i915/i915_request.c > @@ -135,6 +135,8 @@ static void i915_fence_release(struct dma_fence *fence) > > /* > * Keep one request on each engine for reserved use under mempressure > + * do not use with virtual engines as this really is only needed for > + * kernel contexts. > * > * We do not hold a reference to the engine here and so have to be > * very careful in what rq->engine we poke. The virtual engine is > @@ -164,7 +166,8 @@ static void i915_fence_release(struct dma_fence *fence) > * know that if the rq->execution_mask is a single bit, rq->engine > * can be a physical engine with the exact corresponding mask. > */ > - if (is_power_of_2(rq->execution_mask) && > + if (!intel_engine_is_virtual(rq->engine) && > + is_power_of_2(rq->execution_mask) && > !cmpxchg(&rq->engine->request_pool, NULL, rq)) > return; > > -- > 2.20.1 >
