iommu, x86: Add DMA remap fault reason

The number of DMA fault reasons in intel's document are from 1
to 0xD, but in dmar.c fault reason 0xD is not printed out.

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).

This patch adds reason 0xD as well.

Signed-off-by: Li, Zhen-Hua <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Donald Dutile <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index dc7e478b7e5f88443e059a1afeca4b57b6e778a4..e5cdaf87822c3a5e53b07feedb47c33ffc5d2d09 100644 (file)
--- 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[] =