>> The Tegra Next Generation SOC uses arm-smmu-v3, but it doesn't have support >> for BTM. >> Do you have plan to get your earlier patch to handle invalidate >> notifications into upstream sometime soon? >> Can the dependency on BTM be relaxed with the patch? >> >> PATCH v9 13/13] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops >> https://www.spinics.net/lists/arm-kernel/msg825099.html
>This patch (which should be in 5.11) only takes care of sending ATC >invalidations to PCIe endpoints. With this, BTM is still required to >invalidate SMMU TLBs. > However we could enable command-queue invalidation when ARM_SMMU_FEAT_BTM > isn't set. > Invalidations are still a relatively rare event so it may not be outrageously > slow. I can add a patch to my tree if you have hardware to test. Thanks! We can test the patch on emulation platform. -KR _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
