Messages in this thread | | | Date | Thu, 20 Jun 2013 16:40:17 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH 1/1] iommu: DMAR reporting table needs at least one DRHD |
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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@hp.com>
Tweaked the error message a bit and applied to x86/vt-d, thanks.
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