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Commit acea0018 authored by David Woodhouse's avatar David Woodhouse
Browse files

intel-iommu: Defer the iotlb flush and iova free for intel_unmap_sg() too. 



I see no reason why we did this _only_ in intel_unmap_page().

Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 3d39cecc

drivers/pci/intel-iommu.c

+12 −5
Original line number Diff line number Diff line
@@ -2815,11 +2815,18 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist, 
	/* free page tables */

	dma_pte_free_pagetable(domain, start_pfn, last_pfn);



	if (intel_iommu_strict) {

		iommu_flush_iotlb_psi(iommu, domain->id, start_pfn,

			      (last_pfn - start_pfn + 1));



				      last_pfn - start_pfn + 1);

		/* free iova */

		__free_iova(&domain->iovad, iova);

	} else {

		add_unmap(domain, iova);

		/*

		 * queue up the release of the unmap to save the 1/6th of the

		 * cpu used up by the iotlb flush operation...

		 */

	}

}



static int intel_nontranslate_map_sg(struct device *hddev,