This is the second respin on top of Robin's series [1], addressing Alex' comments. Major changes are: - MSI-doorbell API now is moved to DMA IOMMU API following Alex suggestion to put all API pieces at the same place (so eventually in the IOMMU subsystem) - new iommu_domain_msi_resv struct and accessor through DOMAIN_ATTR_MSI_RESV domain with mirror VFIO capability - more robustness I think in the VFIO layer - added "iommu/iova: fix __alloc_and_insert_iova_range" since with the current code I failed allocating an IOVA page in a single page domain with upper part reserved IOVA range exclusion will be handled in a separate series The priority really is to discuss and freeze the API and especially the MSI doorbell's handling. Do we agree to put that in DMA IOMMU? Note: the size computation does not take into account possible page overlaps between doorbells but it would add quite a lot of complexity i think. Tested on AMD Overdrive (single GICv2m frame) with I350 VF assignment. dependency: the series depends on Robin's generic-v7 branch: [1] [PATCH v7 00/22] Generic DT bindings for PCI IOMMUs and ARM SMMU http://www.spinics.net/lists/arm-kernel/msg531110.html Best Regards Eric Git: complete series available at https://github.com/eauger/linux/tree/generic-v7-pcie-passthru-v14 the above branch includes a temporary patch to work around a ThunderX pci bus reset crash (which I think unrelated to this series): "vfio: pci: HACK! workaround thunderx pci_try_reset_bus crash" Do not take this one for other platforms. Eric Auger (15): iommu/iova: fix __alloc_and_insert_iova_range iommu: Introduce DOMAIN_ATTR_MSI_RESV iommu/dma: MSI doorbell alloc/free iommu/dma: Introduce iommu_calc_msi_resv iommu/arm-smmu: Implement domain_get_attr for DOMAIN_ATTR_MSI_RESV irqchip/gic-v2m: Register the MSI doorbell irqchip/gicv3-its: Register the MSI doorbell vfio: Introduce a vfio_dma type field vfio/type1: vfio_find_dma accepting a type argument vfio/type1: Implement recursive vfio_find_dma_from_node vfio/type1: Handle unmap/unpin and replay for VFIO_IOVA_RESERVED slots vfio: Allow reserved msi iova registration vfio/type1: Check doorbell safety iommu/arm-smmu: Do not advertise IOMMU_CAP_INTR_REMAP vfio/type1: Introduce MSI_RESV capability Robin Murphy (1): iommu/dma: Allow MSI-only cookies drivers/iommu/Kconfig | 4 +- drivers/iommu/arm-smmu-v3.c | 10 +- drivers/iommu/arm-smmu.c | 10 +- drivers/iommu/dma-iommu.c | 184 ++++++++++++++++++++++++++ drivers/iommu/iova.c | 2 +- drivers/irqchip/irq-gic-v2m.c | 10 +- drivers/irqchip/irq-gic-v3-its.c | 13 ++ drivers/vfio/vfio_iommu_type1.c | 279 +++++++++++++++++++++++++++++++++++++-- include/linux/dma-iommu.h | 59 +++++++++ include/linux/iommu.h | 8 ++ include/uapi/linux/vfio.h | 30 ++++- 11 files changed, 587 insertions(+), 22 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
