On 08/15/17 at 06:18pm, Joerg Roedel wrote:
> On Wed, Aug 09, 2017 at 04:33:32PM +0800, Baoquan He wrote:
> > Baoquan He (12):
> > iommu/amd: Detect pre enabled translation
> > iommu/amd: add several helper functions
> > Revert "iommu/amd: Suppress IO_PAGE_FAULTs in kdump kernel"
> > iommu/
On Wed, Aug 09, 2017 at 04:33:32PM +0800, Baoquan He wrote:
> Baoquan He (12):
> iommu/amd: Detect pre enabled translation
> iommu/amd: add several helper functions
> Revert "iommu/amd: Suppress IO_PAGE_FAULTs in kdump kernel"
> iommu/amd: Define bit fields for DTE particularly
> iommu/am
When kernel panicked and jump into the kdump kernel, DMA started by the
1st kernel is not stopped, this is called on-flight DMA. In the current
code it will disable iommu and build new translation table and attach
device to it. This will cause:
1. IO_PAGE_FAULT warning message can be seen.
2. tr
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