Re: [PATCH v11 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

[Baoquan He]

On 05/11/15 at 05:52pm, Li, Zhen-Hua wrote:
> This patchset is an update of Bill Sumner's patchset, implements a fix for:
> If a kernel boots with intel_iommu=on on a system that supports intel vt-d, 
> when a panic happens, the kdump kernel will boot with these faults:

Test passed on my local workstation. Thanks, Zhenhua.

> 
>     dmar: DRHD: handling fault status reg 102
>     dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr fff80000
>     DMAR:[fault reason 01] Present bit in root entry is clear
> 
>     dmar: DRHD: handling fault status reg 2
>     dmar: INTR-REMAP: Request device [[61:00.0] fault index 42
>     INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
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