Tom Murphy has almost done all the work. His latest patch series was posted here. https://lore.kernel.org/linux-iommu/20200903201839.7327-1-murphyt7@xxxxxx/ Thanks a lot! This series is a follow-up with below changes: 1. Add a quirk for the i915 driver issue described in Tom's cover letter. 2. Fix several bugs in patch "iommu: Allow the dma-iommu api to use bounce buffers" to make the bounce buffer work for untrusted devices. 3. Several cleanups in iommu/vt-d driver after the conversion. Please review and test. Best regards, baolu Lu Baolu (2): iommu: Add quirk for Intel graphic devices in map_sg iommu/vt-d: Cleanup after converting to dma-iommu ops Tom Murphy (4): iommu: Handle freelists when using deferred flushing in iommu drivers iommu: Add iommu_dma_free_cpu_cached_iovas() iommu: Allow the dma-iommu api to use bounce buffers iommu/vt-d: Convert intel iommu driver to the iommu ops .../admin-guide/kernel-parameters.txt | 5 - drivers/iommu/dma-iommu.c | 229 ++++- drivers/iommu/intel/Kconfig | 1 + drivers/iommu/intel/iommu.c | 885 +++--------------- include/linux/dma-iommu.h | 8 + include/linux/iommu.h | 1 + 6 files changed, 323 insertions(+), 806 deletions(-) -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx