When hot plugging a descrete IOH or a physical processor with embedded IIO, we need to handle DMAR(or IOMMU) unit in the PCIe host bridge if DMAR is in use. This patch set tries to enhance current DMAR/IOMMU/IR drivers to support hotplug and is based on latest Linus master branch. All prerequisite patches to support DMAR device hotplug have been merged into the mainstream kernel, and this is the last patch set to enable DMAR device hotplug. You may access the patch set at: https://github.com/jiangliu/linux.git iommu/hotplug_v6 This patch set has been tested on Intel development machine. Appreciate any comments and tests. V5->V6: 1) Fix a race condition found during review 2) Refine dmar_walk_resources() to dmar_walk_remapping_entries() Patch 1-4 enhances DMAR framework to support hotplug Patch 5 enhances Intel interrupt remapping driver to support hotplug Patch 6 enhances error handling in Intel IR driver Patch 7 enhance Intel IOMMU to support hotplug Patch 8 enhance ACPI pci_root driver to handle DMAR units Jiang Liu (8): iommu/vt-d: Introduce helper function dmar_walk_resources() iommu/vt-d: Dynamically allocate and free seq_id for DMAR units iommu/vt-d: Implement DMAR unit hotplug framework iommu/vt-d: Search for ACPI _DSM method for DMAR hotplug iommu/vt-d: Enhance intel_irq_remapping driver to support DMAR unit hotplug iommu/vt-d: Enhance error recovery in function intel_enable_irq_remapping() iommu/vt-d: Enhance intel-iommu driver to support DMAR unit hotplug pci, ACPI, iommu: Enhance pci_root to support DMAR device hotplug drivers/acpi/pci_root.c | 16 +- drivers/iommu/dmar.c | 532 ++++++++++++++++++++++++++++------- drivers/iommu/intel-iommu.c | 297 ++++++++++++++----- drivers/iommu/intel_irq_remapping.c | 237 ++++++++++++---- include/linux/dmar.h | 50 +++- 5 files changed, 890 insertions(+), 242 deletions(-) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
