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 mainstream kernel v3.16-rc2. Patch 1-13 are bugfixes and code improvement for current drivers. Patch 14-17 enhances DMAR framework to support hotplug Patch 18 enhances Intel interrupt remapping driver to support hotplug Patch 19 enhances error handling in Intel IR driver Patch 20 enhance Intel IOMMU to support hotplug Patch 21 enhance ACPI pci_root driver to handle DMAR units This patch set has been tested on Intel development machine. Appreciate any comments and tests. With this patch set and another IOAPIC hotplug patch set(http://www.mail-archive.com/linux-kernel @vger.kernel.org/msg671316.html) applied, we could support full functional socket hotplug on x86 platforms now. V2->V3: 1) rebase to latest v3.16-rc2 2) fix a bug in detecting super page support when hot-adding IOMMU V1->V2: 1) enhance the way to simplify intel_unmap_sg() 2) rename dmar_device_hotplug() to dmar_device_add/remove() 3) coding style improvment Best Regards! Jiang Liu (21): iommu/vt-d: match segment number when searching for dev_iotlb capable devices iommu/vt-d: use correct domain id to flush virtual machine domains iommu/vt-d: introduce helper functions to improve code readability iommu/vt-d: introduce helper functions to make code symmetric for readability iommu/vt-d: only dynamically allocate domain id for virtual domains iommu/vt-d: fix possible invalid memory access caused by free_dmar_iommu() iommu/vt-d: avoid freeing virtual machine domain in free_dmar_iommu() iommu/VT-d: simplify include/linux/dmar.h iommu/vt-d: change iommu_enable/disable_translation to return void iommu/vt-d: simplify intel_unmap_sg() and kill duplicated code iommu/vt-d: introduce helper domain_pfn_within_range() to simplify code iommu/vt-d: introduce helper function iova_size() to improve code readability iommu/vt-d: fix bug in computing domain's iommu_snooping flag 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 _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 | 531 ++++++++++++++++++++------ drivers/iommu/intel-iommu.c | 718 +++++++++++++++++++++-------------- drivers/iommu/intel_irq_remapping.c | 233 +++++++++--- include/linux/dmar.h | 86 +++-- include/linux/iova.h | 5 + 6 files changed, 1104 insertions(+), 485 deletions(-) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
