[Patch v4 7/9] iommu/amd: copy old trans table from old kernel

From: Baoquan HE Here several things need be done: 1) Initialize amd_iommu_dev_table because it was set several times since kdump kernel reboot. We don't need the set because we will copy the content from old kernel. 2) Re-enable event/cmd buffer 3) Install the DTE table to reg 4) Flush all

Re: [Patch v4 7/9] iommu/amd: copy old trans table from old kernel

Original Message From: Baoquan HE Here several things need be done: 1) Initialize amd_iommu_dev_table because it was set several times since kdump kernel reboot. We don't need the set because we will copy the content from old kernel. 2) Re-enable event/cmd buffer 3) In