I built and boot this series in Huawei RH5885 (Intel(R) Xeon(R) CPU E7- 4807, two IOHs and two IOMMUs), It works fine, IRQ remap and DMA remap are both look good. But because my platform BIOS has no _DSM, so I didn't test the hotplug case yet. Thanks! Yijing. On 2014/9/12 10:10, Jiang Liu wrote: > 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_v5 > > This patch set has been tested on Intel development machine. > Appreciate any comments and tests. > > 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 | 233 +++++++++++---- > include/linux/dmar.h | 50 +++- > 5 files changed, 888 insertions(+), 240 deletions(-) > -- Thanks! Yijing -- 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
