Commit 4ca0be7a authored Aug 18, 2020 by Prakash Gupta

iommu: skip iommu_tlb_sync in iommu_unmap()



Downstream arm-smmu impl, perform SYNC as part of unmap().
This is done under arm_smmu_tlb_inv_context_s1. This double the sync
operation. This impacts the unmap time, remove this duplicate sync
operation.

Change-Id: Ic98fc04a8102fe3a0b79e52b33daabf94732fcbf
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>

parent 0afd6cbe

drivers/iommu/iommu.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -2030,7 +2030,6 @@ size_t iommu_unmap(struct iommu_domain *domain,

		iommu_iotlb_gather_init(&iotlb_gather);
		ret = __iommu_unmap(domain, iova, size, &iotlb_gather);
		iommu_tlb_sync(domain, &iotlb_gather);

		return ret;
		}