Messages in this thread Patch in this message | | | From | "Li, Zhen-Hua" <> | Subject | [PATCH 1/1] iommu: add a dma remap fault reason. | Date | Mon, 4 Mar 2013 09:10:49 +0800 |
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The number of dma fault reasons in intel's document are from 1 to 0xD, but in dmar.c I cannot find fault reason 0xD.
In this document: Intel Virtualization Technology for Directed I/O Architecture Specification http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
Chapter 4. Support For Device-IOTLBs
Table 6. Unsuccessful Translated Requests
There is fault reason for 0xD not listed in kernel: Present context-entry used to process translation request specifies blocking of Translation Requests (Translation Type (T) field value not equal to 01b).
So I think 0xD should be added.
Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com> --- drivers/iommu/dmar.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index dc7e478..e5cdaf8 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1083,6 +1083,7 @@ static const char *dma_remap_fault_reasons[] = "non-zero reserved fields in RTP", "non-zero reserved fields in CTP", "non-zero reserved fields in PTE", + "PCE for translation request specifies blocking", }; static const char *irq_remap_fault_reasons[] = -- 1.7.10.4
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