Re: [PATCH 4.19 17/32] iommu/vt-d: Dont queue_iova() if there is no flush queue

Hi! > --- a/drivers/iommu/intel-iommu.c > +++ b/drivers/iommu/intel-iommu.c > @@ -3721,7 +3721,7 @@ static void intel_unmap(struct device *d > > freelist = domain_unmap(domain, start_pfn, last_pfn); > > - if (intel_iommu_strict) { > + if (intel_iommu_strict || !has_iova_flush_que

[PATCH 4.19 17/32] iommu/vt-d: Dont queue_iova() if there is no flush queue

From: Dmitry Safonov commit effa467870c7612012885df4e246bdb8ffd8e44c upstream. Intel VT-d driver was reworked to use common deferred flushing implementation. Previously there was one global per-cpu flush queue, afterwards - one per domain. Before deferring a flush, the queue should be allocated