Re: [PATCH 1/1] iommu: DMAR reporting table needs at least one DRHD

[Joerg Roedel]

On Mon, May 20, 2013 at 03:57:32PM +0800, Li, Zhen-Hua wrote:
> In intel vt-d spec , chapter 8.1 , DMA Remapping Reporting Structure.
> In the end of the table, it says:
> 
> Remapping Structures[]
> -
> A list of structures. The list will contain one or
> more DMA Remapping Hardware Unit Definition
> (DRHD) structures, and zero or more Reserved
> Memory Region Reporting (RMRR) and Root Port
> ATS Capability Reporting (ATSR) structures.
> These structures are described below.
> 
> So, there should be at least one DRHD structure in DMA Remapping
> reporting table. If there is no DRHD found, a warning is necessary.
> 
> Signed-off-by: Li, Zhen-Hua <zhen-hual@xxxxxx>

Tweaked the error message a bit and applied to x86/vt-d, thanks.


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